EP1322906A1

EP1322906A1 - Optical data storage device containing a co-phthalocyanin complex in the optically writable information layer

Info

Publication number: EP1322906A1
Application number: EP01965272A
Authority: EP
Inventors: Josef-Walter Stawitz; Horst Berneth; Thomas Bieringer; Friedrich-Karl Bruder; Rainer Hagen; Karin HASSENRÜCK; Serguei Kostromine; Rafael Oser
Original assignee: Bayer AG
Current assignee: Lanxess Deutschland GmbH
Priority date: 2000-09-21
Filing date: 2001-09-10
Publication date: 2003-07-02
Also published as: CN1462358A; PL360939A1; WO2002025205A1; US20020127366A1; AU2001285943A1; JP2004509377A; US6713146B2; TW556186B; CN1283975C; CZ2003832A3

Abstract

The invention relates to an optical data support which can be written once, to the use of co-phthalocyanin complexes as light-absorbing compounds in the optically writable information layer of optical data supports, especially for CD-Rs, and to the application of the aforementioned compounds to a polymer substrate, especially a polymer carbonate, by spin coating.

Description

Optical data storage media containing a co-phthalocyanine complex in the information layer which can be written on with light

The present invention relates to the use of co-phthalocyanine complexes as a light-absorbing compound in the light-writable information layer of write-once optical data carriers, optical data carriers and a method for their production.

The once writable compact disk (CD-R) has been experiencing an enormous leap lately

Volume growth. The light-absorbing connection of the information layer represents an essential component of the optical data carrier, to which correspondingly high and diverse demands are made. It is not uncommon for the production of such compounds to be correspondingly complex (cf. WO-A-00/09522).

The object of the invention is accordingly to provide an easy-to-synthesize phthalocyanine dye which meets the high requirements (such as light stability, favorable signal-to-noise ratio, high writing sensitivity, damage-free application to the substrate material, etc.) for use as a light-absorbing material

Connection in the information layer of a write-once optical data carrier (primarily CD-R) fulfilled.

Surprisingly, it was found that co-phthalocyanine complexes are well suited for the stated purpose.

The invention relates to an optical data carrier containing a transparent substrate, on the surface of which at least one writable information layer, optionally a reflection layer, optionally intermediate layers and / or optionally a protective layer are applied, characterized in that the information layer which can be written on with light contains at least one co-phthalocyanine complex of the formula I as the light-absorbing compound

L ¹

Co ^Θ Pc [R ³ ] [R ⁴ ] [R ⁵ ] [R ⁶ ] Ar (I), wxyz

embedded image in which

CoPc stands for cobalt (III) phthalocyanine, where

L ¹ and L ^{2 are} axial, coordinatively bound ligands of the central cobalt atom and the radicals R to R correspond to substituents on the phthalocyanine, in which

L ¹ and L ² independently of one another for an amine of the formula R ^ R ² or for a

Q_ © isonitrile of the formula IC - =: N— R stands,

wherein

R °, R ¹ and R ² independently of one another for hydrogen, alkyl, cycloalkyl, alkenyl,

Aryl or hetaryl or two of the radicals R 0 to R 9 together with the N atom to which they are attached form a hydrogenated, partially hydrogenated, quasi-aromatic or aromatic ring, preferably form a 5- to 7-membered ring which optionally contains further heteroatoms, in particular from the group N, O and / or S,

R represents alkyl, cycloalkyl, alkenyl, aryl or hetaryl,

R ³ , R ⁴ , R ⁵ and R ⁶ independently of one another for halogen, cyano, alkyl, aryl, alkylamino, dialkylamino, alkoxy, alkylthio, aryloxy, arylthio, SO ₃ H, SO ₂ NR ⁷ R ⁸ , CO ₂ R ¹² , CO R7R8, NH-COR ¹² or a radical - (B) _m -D,

B is a bridge member from the group direct bond, CH ₂ , CO, CH (alkyl), C (alkyl) ₂ , NH, S, O or -CH = CH-, where (B) _{m is} a chemically sensible sequence of bridge members B means with m = 1 to 10, preferably m = 1, 2, 3 or 4,

D for the monovalent residue of a redox system of the formula

χ ¹ - ^ CH = CH ^ Y (Red)

or

or represents a metallocenyl radical or metallocenylcarbonyl radical, titanium, manganese, iron, ruthenium or osmium being suitable as the metal center,

X ¹ and X ² independently of one another represent NR'R ", OR" or SR ",

Y ^{1 represents} NR ', O or S, Y ^{2 represents} NR',

n stands for 1 to 10 and

R 'and R "independently of one another are hydrogen, alkyl, cycloalkyl, aryl or

Hetaryl, or a direct bond or bridge to one of the C-

Form atoms of the ^~~ ( ^{CH: = CH "} / _n ^" or = CH CH- = chain,

w, x, y and z are independently 0 to 12 and w + x + y + z <12, 7 o and R independently of one another for Al lamino, hydroxyalkylamino, dialkylammo, bishydroxyalkylamino, arylamino or R and R together with the N atom to which they are bonded form a heterocyclic 5-, 6- or 7- membered ring, optionally with the participation of further heteroatoms, in particular from the group O, N and S, where NR R, in particular pyrrolidino, piperidino or morpholino,

R ^{12 represents} alkyl, aryl, hetaryl or hydrogen,

^" Stands for an anion, in particular for halide, Ci to C ₂ Q alkylCOO ^" , formate, oxalate, lactate, glycolate, citrate, CH ₃ OSO ₃ ^" , NH ₂ SO ₃ ^" , CH ₃ SO ₃ ^" , V. SO ₄ ^{2 "} or 1/3 PO ₄ ^3" stands.

The co-phthalocyanine complex of the formula I can also be in the form of the formula Ia

11

R

Co Pc [R ³ ] [R ⁴ ] [R ⁵ ] [R ⁶ ] (la)

■ w x y z

, '2

wherein

CoPc, L, the radicals R -R and the indices w, x, y and z have the same meaning as in formula (I) and

R ^{1 x is} a covalently bound radical of the central cobalt atom and is different from primary or secondary amines or from isonitrile

L ¹ derives, ie for -NR'R ² , where R ¹ and R ^{2 have} the meaning given above or stands for - C≡ΞN - R An®.

Θ For the sake of simplicity, however, the following explanations all relate to the compounds of the formula (I). But of course they also apply in the same way to the formula (la).

Preferred heterocyclic amine ligands are L ¹ and L ²

Morpholine, piperidine, piperazine, pyridine, 2,2-bipyridm, 4,4-bipyridine, pyridazine, pyrimidine, pyrazine, imidazole, benzimidazole, isoxazole, benzisoxazole, oxazole, benzoxazole, thiazole, benzothiazole, quinoline, pyrrole, fridol, 3, 3-dimethylindole, each of which is coordinated with the cobalt atom on the nitrogen atom.

The alkyl, alkoxy, aryl and heterocyclic radicals can optionally further radicals such as alkyl, halogen, hydroxy, hydroxyalkyl, amino, alkylamino, dialkylamino, nitro, cyano, CO-NH ₂ , alkoxy, alkoxycarbonyl, morpholino, piperidino, Wear pyrrolidino, pyrrolidono, trialkylsilyl, trialkylsiloxy or phenyl. The alkyl and alkoxy radicals can be saturated, unsaturated, straight-chain or branched, the alkyl radicals can be partially or perhalogenated, the alkyl and alkoxy radicals can be ethoxylated or propoxylated or silylated. Adjacent alkyl and / or alkoxy radicals on aryl or heterocyclic radicals can together form a three- or four-membered bridge.

Preferred compounds of the formula (I) are those in which for the radicals R ° to R ⁸ and R, R ', R "and R ¹² and for the ligands L ¹ and L ² :

Substituents with the designation "alkyl" are preferably C 1 -C ₆ alkyl, in particular CrC ₆ alkyl, which are optionally substituted by halogen, such as chlorine, bromine,

Fluorine, hydroxy, cyano and / or dC ₆ alkoxy are substituted;

Substituents with the designation "alkoxy" are preferably d-C_6-alkoxy, in particular dC ₆ -alkoxy, which are optionally substituted by halogen, such as chlorine, bromine, fluorine, hydroxy, cyano and / or dC ₆ -alkyl; Substituents with the designation "cycloalkyl" are preferably C ₈ -C ₈ cycloalkyl, in particular C ₅ to C ₆ cycloalkyl, which are optionally substituted by halogen, such as chlorine, bromine or fluorine, hydroxy, cyano and / or d-Cö-alkyl ,

Substituents with the designation "alkenyl" preferably denote C ₆ -C ₈ alkenyl, which are optionally substituted by halogen, such as chlorine, bromine or fluorine, hydroxy, cyano and / or dC ₆ alkyl, in particular alkenyl means allyl,

Substituents with the meaning "hetaryl" are preferably heterocyclic radicals having 5- to 7-membered rings, which are preferably heteroatoms from the group

Contain N, S and / or O and optionally fused with aromatic rings or optionally carry further substituents, for example halogen, hydroxy, cyano and / or alkyl, with particular preference being given to: pyridyl, furyl, thienyl, oxazolyl, thiazolyl, imidazolyl, quinolyl, Benzoxazolyl, benzthiazolyl and benzimidazolyl,

The substituents with the name “aryl” preferably denote C ₆ -C ₁₀ aryl, in particular phenyl or naphthyl, which may be replaced by halogen, such as F, Cl, hydroxy, dC ₆ alkyl, dC ₆ alkoxy, NO ₂ and or CN are substituted.

Co-phthalocyanine complexes of the formula (I) are preferred in which

L ¹ and L ² independently of one another for ammonia, methylamine, ethylamine, ethanolamine, propylamine, isopropylamine, butylamine, isobutylamine, tert. Butylamine, pentylamine, tert. Amylamine, benzylamine, methylphenylhexylamine, amino-propylamine, aminoethylamine, 3-dimethylaminopropylamine, 3-diethylamino-propylamine, diethylaminoethylamine, dibutylamine-propylamine, morpholino-propylamine, piperidinopropylamine, pyrrolidinopropylamine, pyrrolidonethylamino-methylamino-methylamino-methyl-aminoxypropylamine, ethylamine, methoxypropylamine, ethoxypropylamine, methoxyethoxypropylamine, 3 - (2-ethylhexyloxy) propylamine, isopropyloxyisopropylamine, Dimethylamine, diethylamine, diethanolamine, dipropylamine, diisopropylamine, dibutylamine, diisobutylamine, di-tert. butylamine, dipentylamine, di-tert. amylamine, bis (2-ethylhexyl) amine, bis (aminoethyl) amine, bis (aminopropyl) amine, bis (dimethylaminopropyl) amine, bis (diethylaminopropyl) amine, bis (diethylaminoethyl) amine, bis (dibutylaminopropyl) amine, di ( morpholino-ρropyl) amine, di (piperidinopropyl) amine, di (pyrrolidinopropyl) amine, di (pyrrolidonopropyl) amine, bis (3- (methyl-hydroxyethylamino) propyl) amine, dimethoxyethylamine, diethoxyethylamine, dimethoxypropylamine, diethoxypropylamine, di ( methoxyethoxyethyl) amine, di (methoxyethoxypropyl) amine, bis (3- (2-ethylhexyloxy) propyl) amine, di (isopropyloxyisopropyl) amine, tri-propylamine, tri (methoxyethoxyethyl) amine, tri (methoxyethoxypropyl) amine, diethylaminoethylpiperazine, dipropylaminoethylpiperazine , Pipidine, piperazine, pyridylamine, 2-thiazolylamine, 2-benzothiazolylamine, 2-benzoxazolylamine, 3-iminoisoindoleninylamine, pyridine, propylpyridine, butylpyridine, 2,2-bipyridine, 4,4-bipyridine, pyridazine, pyrimidine , Pyrazine, hnidazole,

Benzimidazole, isoxazole, benzisoxazole, oxazole, benzoxazole, thiazole, benzthiazole, quinoline, pyrrole, indole, 3,3-dimethylindole, aminopyridine, aniline, p-toluidine, p-tert. Butylaniline, p-anisidine, isopropylaniline, butoxyaniline or naphthylamine,

or

L ¹ and L ² independently of one another for methylisonitrile, ethylisonitrile, ethanol-isonitrile, propylisonitrile, isopropylisonitrile, butylisonitrile, isobutylisonitrile, tert. Butylisonitrile, pentylisonitrile, tert-amylisonitrile, benzylisonitrile, methylphenylhexylisonitrile, aminopropylisonitrile, aminoethylisonitrile, 3-dimethylaminopropylisonitrile, 3 -diethylaminopropylisonitrile, diethylaminoethylisopropylnitrile, dibutylaminepropylisonitriditrile, ethylamino) propylisonitrile, methoxy ethylisonitrile, ethoxy ethylisonitrile, methoxypropylisonitrile, ethoxypropylisonitrile, methoxyethoxypropyl isonitrile, 3 - (2-ethylhexyloxy) propylisonitrile, isopropyloxyisopropylisonitrile, dimethylisomitrile, diethylisonitrile, diethanolisonitrile, dipropylisonitrile, diisopropylisonitrile, dibutylisonitrile, diisobutylisonitrile, di-tert.-butylisonitryl, diphenylitrile, diphenylitritryl, ) isonitrile, bis (aminoethyl) isonitrile, bis (aminopropyl) isonitrile, bis (dimethylamino-propyl) isonitrile, bis (diethylamino-propyl) isonitrile, bis (diethylamino-ethyl) isonitrile, bis (dibutylamine propyl) isonitrile, di (morpholinopropyl) , Di (piperidinopropyl) isonitrile, di (pyrrolidinopropyl) isonitrile, di (pyrrolidonopropyl) isonitrile, bis (3- (methyl-hydroxyethylamino) propyl) isonitrile, dimethoxyethylisonitrile, diethoxyethylisonitrile, dimethoxypropylisonitrile,

Diethoxypropylisonitrile, di (methoxyethoxyethyl) isonitrile, di (methoxyethoxypropyl) isonitrile, bis (3- (2-ethylhexyloxy) propyl) isonitrile, di (isopropyloxyisopropyl) isonitrile, tripropylisonitrile, tri (methoxyethoxyethyl) isonitrile, tri (methoxyethoxyethyl) isonitrile, , Pyridylisonitrile, 2-thiazolylisonitrile, 2-benzothiazolylisonitrile, 2-benzoxazolylisonitrile, 3-iminoisoindoleninylisonitrile, phenylisonitrile, p-tert-butylphenylisonitrile, p-methoxyphenylisonitrile, isopropylphenylisonitrile, butoxyphenylisonitrile or butoxyphenylisonitrile

R ³ , R ⁴ , R ⁵ and R ⁶ independently of one another for chlorine, fluorine, bromine, iodine, cyano, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert. Butyl, pentyl, tert.

Amyl, hydroxyethyl, 3-dimethylaminopropyl, 3-diethylaminopropyl,

Phenyl, p-tert-butylphenyl, p-methoxyphenyl, isopropylphenyl, trifluoromethylphenyl, naphthyl, methylamino, ethylamino, propylamino,

Isopropylamino, butylamino, isobutylamino, tert. Butylamino, pentylamino, tert. Amylamino, benzylamino, methylphenylhexylamino, hydroxyethylamino, aminopropylamino, aminoethylamino, 3-dimethylamino-propylamino, 3-diethylaminopropylamino, diethylaminoethylamino,

Dibutylamine propylamino, mo holinopropylamino, piperidinopropylamino,

Pyrrolidinopropylamino, pyrrolidonopropylamino, 3- (methyl-hydroxyethylamino) propylamino, methoxyethylamino, ethoxyethylamino, methoxypropylamino, ethoxypropyla ino, methoxyethoxypropylamino, 3- (2-ethyl- hexyloxy) propylamino, isopropyloxypropylamino, dimethylamino, diethylamino, diethanolamino, dipropyla ino, diisopropylamino, dibutylamino, diisobutylamino, di-tert. butylamino, dipentylamino, di-tert. amylamino, bis (2-ethylhexyl) amino, bis (aminopropyl) amino, bis (aminoethyl) amino, bis (3-dimethylaminopropyl) amino, bis (3-diethylaminopropyl) amino, bis

(piethylaminoemyl) amino, bis (dibutylamine propyl) amino, di (morpholino-ρropyl) amino, di (piperidinopropyl) amino, di (pyrrolidinopropyl) amino, di- (pyrrolidonopropyl) a ino, bis (3- (methyl-hydroxyethylannno) propyl) amino, dimethoxyethylamino, diethoxyethylamino, dimethoxypropylamino, diethoxypropylamino, di (methoxyethoxyethyl) amino, di (methoxyethoxypropyl) amino, bis (3- (2-ethylhexyloxy) propyl) amino, di (isopropyloxyisopropyl) amino, methoxy, ethoxy , Propyloxy, isopropyloxy, butyloxy, isobutyloxy, tert. Butyloxy, pentyloxy, tert. Amyloxy, methoxyethoxy, ethoxyethoxy, methoxypropyloxy, ethoxypropyloxy, methoxyethoxypropyloxy, 3- (2-ethylhexyloxy) propyloxy, methylthio, ethylthio, propylthio,

Isopropylthio, butylthio, isobutylthio, tert-butylthio, pentylthio, tert.-amylthio, phenyl, methoxyphenyl, trifluoromethylphenyl, naphthyl, CO ₂ R ¹² , CONR ⁷ R ⁸ , NH-COR ¹² , SO ₃ H, SO ₂ NR ⁷ R ⁸ , or for a residue of the formula

embedded image in which

_ _C _0 -, -Cl-LO-, * -C ₂ H ₄ -0-, ^* -CH (CH ₃ ) 0-

II O

(B) _m for

- C— OCH— or - yy— OC ₂ H ₄ OO where the asterisk (*) indicates the connection with the 5-ring,

M represents an Mn or Fe cation,

w, x, y and z are independently 0 to 8 and w + x + y + z <12,

An ^" for chloride, bromide, fluoride, d- to C ₀ alkylCOO ^" , formate, oxalate, lactate, glycolate, citrate, CH ₃ OSO ₃ ^" , NH ₂ SO ₃ ^" , CH ₃ SO ₃ ^" ,% SO ₄ ^{2 "} or 1/3 PO ₄ ^3" ,

NR ⁷ R ⁸ for amino, methylamino, ethylamino, propylamino, isopropylamino, butylamino, isobutylamino, tert. Butylamino, pentylamino, tert. Amylamino, benzylamino, methylphenylhexylamino, 2-ethyl-l-hexylamino, hydroxyethylamino, aminopropylamino, aminoethylamino, 3-dimethylaminopropylamino, 3-diethylaminopropylamino, morpholinopropylamino, piperidino-propylamino, pyrrolidinopropylamino, pyrrolidinopropylamino, (3) ) propylamino, methoxyethylamino, ethoxyethylamino, methoxypropylamino, ethoxypropylamino, methoxyethoxypropylamino, 3- (2-ethylhexyloxy) propylamino, isopropyloxyisopropylamino, dimethylamino, diethylamino, dipropylamino, diisopropylamino, dibutylamino

Diisobutylamino, di-tert. butylamino, dipentylamino, di-tert. Amylamino, bis (2-ethylhexyl) amino, dihydroxyethylamino, bis (aminopropyl) amino, bis (aminoethyl) amino, bis (3-dimethylaminoρropyl) amino, bis (3-diethylamino propyl) amino, di (morpholinoρropyl) amino, di ( piρeridinoproρyl) amino, di (pyrrolidinoproρyl) amino, di (pyrrolidonopropyl) amino, bis (3- (methyl-hydroxyethylamino) propyl) amino, dimethoxyethylamino, diethoxyethylamino, dimethoxypropylamino, diethoxypropylamino, di (methoxyethoxyprop , Bis (3- (2-ethylhexyloxy) propyl) amino, di (isopropyloxyisopropyl) amino, anilino, p-toluidino, p-tert. Butylanilino, p-anisidino, isopropylanilino or naphthylamino or NR ⁷ R ^{8 represent} pyrrolidino, pipidino, piperazino or morpholino, R ¹² for hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, ter. -Butyl, pentyl, tert-amyl, phenyl, p-tert-butylphenyl, p-methoxyphenyl, isopropylphenyl, p-trifluoromethylphenyl, cyanophenyl, naphthyl, 4-pyridinyl, 2-pyridinyl, 2-quinolinyl, 2-pyrrolyl or 2-indolyl,

in which

the alkyl, alkoxy, aryl and heterocyclic radicals, optionally further radicals such as alkyl, halogen, hydroxy, hydroxyalkyl, amino, alkylamino, dialkylamino,

Nitro, cyano, CO-NH ₂ , alkoxy, alkoxycarbonyl, Moφholino, piperidino, pyrrolidino, pyrrolidono, trialkylsilyl, trialkylsiloxy or phenyl, which alkyl and / or alkoxy radicals can be saturated, unsaturated, straight-chain or branched, the alkyl radicals may be partially or perhalogenated, the alkyl and or alkoxy radicals may be ethoxylated or propoxylated or silylated, adjacent alkyl and / or

Alkoxy residues on aryl or heterocyclic residues can jointly form a three- or four-membered bridge.

Redox systems in the context of this application include in particular those described in Angew. Chem. 1978, p. 927 and in Topics of Current Chemistry, Vol. 92, p. 1

(1980), described redox systems.

Preferred are p-phenylenediamines, phenothiazines, dihydrophenazines, bipyridinium salts (Viologene), quinodimethanes.

Those co-complexes of the formula I which correspond to the formula (Ib) are particularly preferred

H ₂ NO

Co®Pc (SO ₀ NR ⁷ R ⁸ ) (halogen) ₀ . ₁₀ (alkoxy) ₀ . _{4 A} n °

! ² o-4 (Ib),

H ₂ NO wherein

Halogen represents chlorine, bromine or fluorine,

Alkoxy stands for dC ₆ - alkoxy,

R ⁷ and R ⁸ independently of one another have the meanings given above,

An ^© , CoPc and R ² also have the meaning given above.

The invention also relates to the compound of formula Ic

H £ -N I R '

Oo ^Φ Pc (SO ₂ NR ⁷ R ⁸ ) (halogen) ₀ . ₁₀ (alkoxy) ^ _A n ©

! 1-4

H ₂ NR "(Ic) woπn

Halogen represents chlorine, bromine or fluorine,

Alkoxy represents dC ₆ -alkoxy which is optionally substituted,

R and R independently of one another have the above meaning,

and the other substituents have the meaning given above.

The invention also relates to a process for the preparation of compounds of the formula (Ic), which is characterized in that one with sulfonamide groups of the formula SO ₂ NR. ⁷ R ⁸ , where R ⁷ and R ^{8 have} the meaning given above, and optionally oxidized halogen and / or alkoxy-substituted co-phthalocyanine and reacted with amines L ¹ and L ² . The preparation is preferably carried out starting from a optionally substituted with halogen and / or alkoxy Co-phthalocyanine by sulfochlorination with chlorosulfonic acid and thionyl chloride at 50-130 ° C and reaction with the corresponding amine to the amide in water at pH 8-12 at room temperature to 100 ° C. The subsequent introduction of the axial amine substituents is preferably carried out in a known manner under oxidative conditions, for example chlorine or air, preferably air, in the case of air in the presence of excess amine (see Example 13). In the case of chlorine, the oxidation takes place first, then the amine is added.

Particularly preferably, the information layer which can be written on with light contains, in addition to a compound of the formula I, at least one other optionally substituted phthalocyanine with or without a central atom as light-absorbing compounds.

The central atom is, for example, one from the group Si, Zn, Al, Cu, Pd, Pt,

Au and Ag, especially Cu and Pd in question.

For example, the sulfonamide-substituted Cu-phthalocyanines known from DE-A 19 925 712 are particularly preferred. Those of the formula II are particularly preferred

wherein

CuPc stands for a copper phthalocyanine residue,

A for an optionally substituted straight-chain or branched

C ₂ -C ₆ alkylene such as ethylene, propylene, butylene, pentylene, hexylene, R ⁹ and R ¹⁰ independently of one another for hydrogen or in each case optionally substituted straight-chain or branched d-Cβ-alkyl such as, for example

Are methyl, ethyl, propyl, butyl, pentyl, hexyl, in particular for substituted d-Ce-hydroxyalkyl and for unsubstituted d-Ce-alkyl,

or R and R together with the N atom to which they are attached form a heterocyclic 5- or 6-ring which optionally contains another heteroatom, e.g. Contains S, N or O,

x stands for 2.0 to 4.0,

y represents 0 to 1.5 and

the sum of x and y is 2.0 to 4.0, preferably 2.5 to 4.0.

Particularly preferred mixture components are those of the formula (II) which correspond to the formula (Ila)

CuPc - [SO ₂ NH-CH ₂ CH ₂ CH ₂ N (CH ₂ ) ₃ ] (Ila), wherein

CuPc means copper phthalocyanine.

Other preferred additional light-absorbing compounds are the sulfonamide- or amido-substituted phthalocyanines as are known, for example, from EP-A-519 395.

In the case of mixtures, different is preferably light-absorbing

Compounds the proportion of the compounds of formula (I) thereof 10 to 90 wt .-%. A mixture of the formulas (T) and (ET) in a weight ratio of 10:90 to 90:10, preferably 20:80 to 80:20, particularly preferably 40:60 to 60:40 is particularly preferred.

In addition to the light-absorbing compound, the information layer can also contain binders, wetting agents, stabilizers, thinners and sensitizers and other constituents.

The substrates can be made of optically transparent plastics which, if necessary, have undergone a surface treatment. Preferred plastics are polycarbonates and polyacrylates, as well as polycycloolefins or polyolefins.

The reflection layer can be made of any metal or metal alloy that is usually used for recordable optical data carriers.

Suitable metals or metal alloys can be vapor-deposited and sputtered and contain e.g. Gold, silver, copper, aluminum and their alloys with each other or with other metals.

The possible protective layer over the reflective layer can be made of UV-curing

Acrylates exist.

A possible intermediate layer, which protects the reflection layer from oxidation, for example, may also be present.

The invention further relates to a method for producing the optical data carriers according to the invention, which is characterized in that the information layer which can be written on by light is coated on a transparent substrate by coating with at least one co-phthalocyanine complex of the formula I, if appropriate in combination with suitable binders , Additives and solvents brings and further optionally provided with a reflection layer, optionally further intermediate layers and optionally a protective layer.

The coating of the substrate with the light-absorbing compound of the formula I, if appropriate in combination with other dyes, binders and or

Solvents are preferably spin coated.

For the coating, the light-absorbing compound of the formula I is preferably dissolved with or without additives in a suitable solvent or solvent mixture, so that the compound of the formula 1 is 100 or less, for example

10 to 20 parts by weight to 100 parts by weight of solvent. The recordable information layer is then preferably metallized at reduced pressure by sputtering or vapor deposition (reflective layer) and possibly subsequently provided with a protective lacquer (protective layer) or another substrate or a covering layer. Multi-layer arrangements with a partially transparent reflection layer are also possible.

Solvents or solvent mixtures for coating the light-absorbing compounds of the formula I or their mixtures with additives and / or binders and other light-absorbing compounds are determined on the one hand by their solvency for the light-absorbing compound of the formula I and the other additives and on the other hand by a minimal influence on the Substrate selected. Suitable solvents which have little influence on the substrate are, for example, alcohols, ethers, hydrocarbons, halogenated hydrocarbons, alkoxy alcohols, ketones. Examples of such solvents are methanol, ethanol, propanol, 2,2,3,3-tetrafluoropropanol, butanol, diacetone alcohol, benzyl alcohol, tetrachloroethane, dichloromethane, diethyl ether, dipropyl ether, dibutyl ether, methyl tert-butyl ether, methoxyethanol, ethoxyethanol , 1-methyl-2-propanol, methyl ethyl ketone, 4-hydroxy-4-methyl-2-pentanone, hexane, cyclohexane, ethylcyclohexane, octane, benzene, toluene, xylene. Preferred solution Chemicals are hydrocarbons and alcohols because they have the least influence on the substrate.

Suitable additives for the recordable information layer are stabilizers, wetting agents, binders, thinners and sensitizers.

Examples:

The following preparative examples show the preparation of the dyes to be used according to the invention.

example 1

115 g of Co-phthalocyanine were introduced into 1 l of dry chlorobenzene at room temperature. 16 g of chlorine were introduced and stirring was continued for 30 minutes. After removing the excess chlorine by blowing with nitrogen, 90 g of 3-

(Methyl-hydroxyethyl) propylamine added dropwise. The mixture was stirred at 90 ° C. for 30 min and, after cooling to room temperature, suction filtered. It was washed with 1 1 chlorobenzene and 1 1 water and the dye obtained was dried in vacuo.

156 g of dye of the formula were obtained

NH ₂ (CH ₂ ) ₃ N (CH ₃ ) CH ₂ CH ₂ OH öo®Pc CI °

I

ÜH ₂ (CH ₂ ) ₃ N (CH ₃ ) CH ₂ CH ₂ OH λ _max 670nm (NMP).

The following compounds were prepared analogously by replacing the 3- (methylhydroxyethyl) propylamine with another amine or isonitrile in the same molar amount.

Example 11

80 g of nonabromochloro-co-phthalocyanine were introduced into 1 l of dry chlorobenzene at room temperature. 5 g of chlorine were introduced and stirring was continued for 30 minutes. After the excess chlorine had been removed by blowing with nitrogen, 28 g of 3- (methyl-hydroxyethyl) propylamine were added dropwise. The mixture was stirred at 90 ° C. for 30 min and, after cooling to room temperature, suction filtered. It was washed with 1 1 chlorobenzene and 1 1 water and the dye was dried in vacuo.

88 g of dye of the formula were obtained H ₂ N (CH ₂ ) ₃ N (CH ₃ ) CH ₂ CH ₂ OH ό to® Pc (Br) ₉ (CI) _C P

1 I

H ₂ N (CH ₂ ) ₃ N (CH ₃ ) CH ₂ CH ₂ OH

λ _m ax 684nm (NMP).

The following compounds were prepared analogously by using the molar amount of another amine.

Example 14

sulfochlorination:

131 g of cobalt phthalocyanine 98.8% is in within 30 min

394 ml of chlorosulfonic acid 98% entered. The approach is within

Heated to 119 ° C. for 25 min, stirred at 119 ° C. for 4 hours, cooled to 85 ° C. and 120 ml of thionyl chloride (at least 98%) were added dropwise at 85-88 ° C. in the course of 2 hours; after that, within

Heated to 90-92 ° C for 20 min, stirred at 90-92 ° C for 4 h, then stirred to RT.

Yield: 802 g melt amide formation:

381 g of melt were on

1700 g of ice discharged. Temperature = -5 ° C. The precipitated sulfochloride was immediately suctioned off with

1000 ml ice water washed neutral and vacuumed well dry. The damp

Sulfochloride was immediately processed further.

750 g ice cream and

Ice water was presented. The sulfochloride was quickly introduced into this mixture with stirring. After that was

39 g of 3-dimethylaminopropylamine were added. The mixture was then heated to 80 ° C. within 60 min. The pH value was kept at 10.00 with 10% NaOH solution and the test was stirred for 45 minutes at 80 ° C. and pH 10.0. After cooling to room temperature, the product was filtered off with suction, washed in portions with 1000 ml of water. The product was dried in a vacuum drying cabinet. Yield: 126.00 g

Introduction of the axial ligands

354 g of 3-dimethylaminopropylamine and 14 g of NH ₄ C1 were heated at 90 ° C. for 1 hour. After cooling to room temperature, 247 g of Co-phthalocyanine-tetrasulfo-3-dimethylaminopropylamide and 1 g of CoCl _{2 were} added. Air was then introduced for 10 hours. The mixture was added to 5 l of water and filtered off. The dye was dried in vacuo. 275 g of dye of the formula were obtained

NH ₂ (CH ₂ ) ₃ N (CH ₃ ) ₂ iio® Pc (SO ₂ NH (CH ₂ ) ₃ N (CH ₃ ) ₂ ) ₄ Cl ° ii

1

NH ₂ (CH ₂ ) ₃ N (CH ₃ ) ₂

Example 15

sulfochlorination:

131 g of cobalt phthalocyanine 98.8% is in within 30 min

394 ml of chlorosulfonic acid 98% entered. The approach is within

Heated to 119 ° C for 25 min, stirred at 119 ° C for 4 h, cooled to 85 ° C and at 85-88 ° C within 2 h

120 ml of thionyl chloride (at least 98%) were added dropwise; after that, within

Heated to 90-92 ° C for 20 min and stirred at 90-92 ° C for 4h, then stirred at RT. Yield: 802 g melt

amide formation:

381 g of melt were questioned on 1700 g of ice. Temperature = -5 ° C. The precipitated sulfochloride was immediately filtered off with suction, washed neutral with 1000 ml of ice water and sucked well. The damp

Sulfochloride was immediately processed further. 750 g ice cream and

750 ml of ice water are presented. The sulfochloride is rapidly introduced into this mixture with stirring. 54 g of methoxyethoxypropylamine are then added. The mixture is then heated to 80 ° C. within 60 min. The pH was kept at 10.00 with 10% NaOH solution and

Stirred for 45 minutes at 80 ° C and pH 10.0.

After cooling to room temperature, the product is filtered off with

Washed 1000 ml of water in portions.

The product was dried in vacuo.

Yield: 112 g

Introduction of axial ligands

A mixture of 199 g Co-phthalocyanine-tefrasulfo-methoxyethoxypropylamide

280 g of imidadzole was made up to about 1000 ml with DMF and stirred in an open beaker for 24 h.

1500 ml of water were added dropwise to this mixture. The product was filtered off and then washed with 1000 ml of water. The dye was dried in vacuo.

197 g of dye of the formula were obtained λ _max 670 nm (NMP)

Example 16

sulfochlorination:

131 g of cobalt phthalocyanine 98.8% was in within 30 min

288 ml of chlorosulfonic acid 98% entered. The mixture was heated to 75 ° C and stirred at 75 ° C for 4 h. After heating to 80 ° C., 120 ml of thionyl chloride (at least 98%) were added dropwise within 2 h. The mixture was stirred at 80 ° C. after 4 h and then stirred at RT.

Yield: 712 g of melt

amide formation:

402 g of melt were on

1700 g of ice discharged. The precipitated sulfochloride was immediately suctioned off with

1000 ml ice water washed neutral and vacuumed well dry. The damp

Sulfochloride was immediately processed further.

750 g ice cream and

750 ml of ice water were presented. The sulfochloride was quickly introduced into this mixture with stirring. After that was

20 g of diisobutylamine added. The mixture was then heated to 80 ° C. within 60 min. The pH was kept at 10.00 with 10% NaOH solution and then stirred for 45 minutes at 80 ° C. and pH 10.0. After cooling to room temperature, the product was filtered off with suction and washed with portions of demineralized water. The product was dried in vacuo. Yield: 95 g

Introduction of axial ligands

354 g of 3-dimethylaminopropylamine and 14 g of NH C1 were heated at 90 ° C. for 1 hour. After cooling to room temperature, 219 g of Co-phthalocyanine-trisulfodiisobutylamide and 1 g of CoCl _{2 were} added. Air was then introduced for 10 hours. The mixture was added to 5 l of water and filtered off. The dye was dried in vacuo. 240 g of dye of the formula were obtained

NH ₂ (CH ₂ ) ₃ N (CH ₃ )

Co ^Φ Pc (SO ₂ N (CH ₂ ) ₃ CH (CH ₃ ) ₂ ) ₂ Cl Q

NH ₂ (CH ₂ ) ₃ N (CH ₃ ) ₂

λ _max 670 nm (NMP)

The following compounds were prepared analogously by using the corresponding molar amount of another amine L ¹ or L ² :

Example 20

32 g of 3- (methoxyethoxyethoxy) phthalonitrile and 385 ml of 1-butanol are heated to boiling and mixed with 21 g of lithium. This mixture is heated at 120 ° C for 1 h. After cooling, 500 ml of water are added and suction filtered. Yield 15 g of dye. Introduction of the metal:

15 g of the green dye are added to 200 ml of DMF and 2 g of CoCl _{2 are} added. The mixture is heated to reflux for 2 hours. After cooling, 200 ml of water are added and suction filtered. Yield 12 g of dye.

Introduction of axial ligands:

A mixture of 12 g of dye and 24 g of imidazole is stirred with 200 ml of DMF in an open beaker for 24 h. 250 ml of water are added and suction filtered.

The dye was dried in vacuo. 11 g of dye of the formula were obtained

λ _max 715 nm (NMP)

The following connection was established analogously: Example 21

λ _max 718 nm (NMP)

Example 22

A 2% solution of a dye mixture was prepared at room temperature from equal parts by weight of the CoPc complex from Example 5 and the compound of the formula Ila in 2,2,3,3-tetrafluoropropanol. This solution was created using

Spin coating applied to a pregrooved polycarbonate substrate. The pre-grooved polycarbonate was produced as a disk using injection molding. The dimensions of the disc and the groove structure corresponded to those that are usually used for CD-R. The disk with the dye layer as the information carrier was sputtered with 100 nm Ag. A UV-curable acrylic lacquer was then applied by spin coating and cured using a UV lamp. A commercial test writer for CD-R (Pulstec ^® OMT 2000 x 4) was used, for example, at 12 mW writing power and simple writing speed (1.4 m / s) when reading the information a modulation level of 38% (30% to 70% is CD-R specification) for the 3T signal and 62% (> 60% is CD-R specification) for received the 1 IT signal.

Example 23

A 2% solution of a dye mixture was prepared at room temperature from equal parts by weight of the CoPc complex from Example 4 and the compound of the formula Ila in 2,2,3,3-tefrafluoropropanol. This solution was applied by means of spin coating. With a commercial test writer for CD-R (Pulstec ^®

OMT 2000 x 4) was e.g. at 14 mW writing performance and twice the writing speed (2.8 m / s) when reading the information, a modulation height of 32% (30% to 70% is CD-R specification) for the 3T signal and 68% (> 60% is CD- R specification) received for the 11T signal.

Example 24

A 32% solution of a dye mixture was prepared from equal parts by weight of phthalogen blue of the Co-Pc complex from Example 4 and the compound of the formula Ila in 10% acetic acid at room temperature. This stock solution was diluted with diacetone alcohol to 8% dye. This solution was applied to the substrate by means of spin coating analogously to example 22 and the substrate was provided with a reflection and protective layer analogously to example 20. In contrast to Example 20, however, only 50 nm of Ag were applied as the reflection layer. With a commercial test writer for CD-R (Pulstec OMT 2000 x 4), for example at 8 mW writing power and simple writing speed (1.4 m / s), a readout of the information resulted in a modulation height of 32% (30% to 70% is CD- R specification) for the 3T signal and 67% (> 60% is CD-R specification) for the 11T signal. Example 25

A 2% solution of the co-phthalocyanine complex from Example 1 in 2,2,3,3-tefrafluoropropanol was prepared at room temperature. This solution was applied to the substrate by means of spin coating analogously to Example 22 and the substrate was provided with a reflection and protective layer analogously to Example 20. In contrast to Example 20, however, only 50 nm of Ag were applied as the reflection layer. With a commercial test writer for CD-R (Pulstec OMT 2000 x 4) e.g. at 12 mW writing power and simple writing speed (1.4 m / s) when reading the information a modulation level of 34% (30% to 70%)

CD-R specification) for the 3T signal and 62% (> 60% is CD-R specification) for the 11T signal.

Claims

Patentansprttche

1. Optical data carrier containing a transparent substrate on the surface of which a light-writable information layer and optionally a reflection layer, optionally intermediate layers and / or optionally a protective layer is applied, characterized in that the light-writable information layer layer has at least one co-phthalocyanine dye of the general formula I contains

L ¹

Co® PcJR ³ ] [R ⁴ ] [R ⁵ ] [R ^D ] An O w / z 0),

wherein

CoPc stands for cobalt (III) phthalocyanine, where L ¹ and L ^{2 are} axial, coordinatively bound ligands of the central cobalt atom and the radicals R to R correspond to substituents on the phthalocyanine, in which

L ¹ and L ^{2 are} each independently an amine of the formula

NR R ² or stand for an isonitrile of the formula IC- = N — R, where

R °, R ¹ and R ² independently of one another for hydrogen, alkyl, cycloalkyl,

Alkenyl, aryl or hetaryl or two of the radicals R ° bis

R ² together with the N atom to which they are attached form a hydrogenated, partially hydrogenated, quasi-aromatic or aromatic ring, preferably a 5- to 7-membered ring

Form a ring which optionally contains further heteroatoms, in particular from the group N, O and / or S, R represents alkyl, cycloalkyl, alkenyl, aryl or hetaryl,

R ³ , R ⁴ , R ⁵ and R ⁶ independently of one another for halogen, cyano, alkyl, aryl,

Alkylamino, dialkylamino, alkoxy, aryloxy, arylthio, alkylthio, SO ₃ H, SO ₂ NR ⁷ R ⁸ CO ₂ R * ² , CONR ⁷ R ⁸ , NH-COR ¹² or a radical

- (B) _m -D stand,

B is a bridge member from the group direct bond, CH ₂ , CO,

CH (alkyl), C (alkyl) ₂ , NH, S, O or -CH = CH-, where (B) _{m is} a chemically meaningful combination of bridge members B and m is 1 to 10, preferably m = 1 .

D for the monovalent residue of a redox system of the formula

or

or represents a metallocenyl radical or metallocenylcarbonyl radical, titanium, manganese, iron, ruthenium or

Osmium comes into question

X ¹ and X ² independently of one another represent NR'R ", OR" or SR ",

Y ^{1 represents} NR ', O or S,

Y ^{2 stands} for NR ',

n stands for 1 to 10 and R 'and R "independently of one another represent hydrogen, alkyl, cycloalkyl, aryl or hetaryl or a direct bond or a bridge

one of the C atoms of the

Forming a chain,

w, x, y and z are independently 0 to 12 and w + x + y + z <12,

7 o

R and R independently of one another for alkylamino, hydroxyalkylamine, dialkylamino, bishydroxyalkylamino, arylamino or R ⁷ and R ⁸ together with the N atom to which they are attached form a heterocyclic 5-, 6- or 7-membered ring, optionally under Participation of further heteroatoms, in particular from the group O, N and S, where NR ⁷ R ⁸ in particular stands for pyrrolidino, piperidino or morpholino, and

R ^{12 represents} alkyl, aryl, hetaryl or hydrogen,

An ^"stands for an anion.

Optical data carrier according to Claim 1, characterized in that at least one co-phthalocyanine complex of the formula I is contained in the information layer which can be written on with light, wherein for the radicals R ° to R ⁸ , R, R ', R ", R ¹² and for the ligands L ¹ and L ² :

Are substituents with the designation "alkyl" dC ₁₆ -alkyl, in particular d-C ₆ -alkyl, which are optionally substituted by halogen, such as chlorine, bromine, fluorine, hydroxy, cyano and / or dC ₆ -alkoxy, are the substituents with the designation “alkoxy” dC ₁₆ -alkoxy, in particular dC ₆ -alkoxy, which are optionally substituted by halogen, such as chlorine, bromine, fluorine, hydroxy, cyano and / or dC ₆ -alkyl,

Substituents with the designation "cycloalkyl" are preferably C ₄ -C ₈ cycloalkyl, in particular C ₅ to C ₆ cycloalkyl, which may be replaced by halogen, such as chlorine, bromine or fluorine, hydroxy, cyano and / or Ci-Cβ- Are alkyl substituted,

Substituents with the designation "alkenyl" preferably denote C ₆ -C ₈ alkenyl, which are optionally substituted by halogen, such as chlorine, bromine or fluorine, hydroxy, cyano and / or d-C0-alkyl, in particular alkenyl means allyl,

Substituents with the meaning "hetaryl" preferably for heterocyclic

Residues with 5- to 7-membered rings, which preferably contain heteroatoms from the group N, S and / or O and are optionally fused with aromatic rings or optionally carry further substituents, for example halogen, hydroxy, cyano and / or alkyl, with particular preference are: pyridyl, furyl, thienyl, oxazolyl, thiazolyl, imidazolyl,

Quinolyl, benzoxazolyl, benzthiazolyl and benzimidazolyl,

the substituents with the designation "aryl" mean C ₆ -C ₁₀ aryl, preferably phenyl or naphthyl, which may be replaced by halogen, such as F, Cl, hydroxy, dC ₆ alkyl, d-Cβ-alkoxy, NO ₂ and / or CN are substituted.

3. Optical data carrier according to claim 1, characterized in that the CoPc complex of the formula I corresponds to that of the formula Ib

wherein the substituents have the meaning according to claim 1.

4. Optical data carrier according to claim 1, characterized in that at least one co-phthalocyanine complex of the formula I is contained in the light-writable information layer, wherein

L and L independently of one another for Ammomak, methylamine, ethylamine, ethanolamine, propylamine, isopropylamine, butylamine, isobutylamine, tert-butylamine, pentylamine, tert-amylamine, benzylamine, methylphenylhexylamine, aminopropylamine, aminoethylamine, 3-dimethylaminopropylamine, 3-diethylaminopropylamine, diethylaminoethylamine, dibutylaminepropylamine, mopholinopropylamine, piperidinopropylamine, pyrrolidinopropylamine, pyrrolidonopropylamine, 3- (methyl-hydroxyethylamino) propylamine, methoxyethylamine, ethoxyoxyamine, methoxypropylamine, methoxyethyloxoxy (ethoxy) ethyloxy (3) propylamine, isopropyloxy-isopropylamine, dimethylamine, diethylamine, dipropylamine, diisopropylamine, diisobutylamine, di-tert. Butylamine, dipentylamine, di-tert. Amylamine, bis (2-ethylhexyl) amine, bis (aminopropyl) amine, bis (aminoethyl) amine, bis (3-dimethylaminopropyl) amine, bis (3-diethylamino propyl) amine, bis (diethylaminoethyl) amine, bis ( dibutylamine propyl) amine, di (morpholinopropyl) amine, di (piperidinopropyl) amine, di (pyrrolidinopropyl) amine, di (pyrrolidonopropyl) amine, bis (3- (methyl-hydroxyethylamino) propyl) amine, dimethoxyethylamine, diethoxy- ethylamine, dimethoxypropylamine, diethoxypropylamine, di (methoxyethoxyethyl) amine, di (methoxyethoxypropyl) amine, bis (3- (2-ethylhexyloxy) propyl) amine, di (isopropyloxyisopropyl) amine, tripropylamine, tri (methoxyethoxyethyl) amine , Tri (methoxyethoxypropyl) amine, diethylaminoethylpiperazine, dipropylaminoethylpiperazine, morpholine, piperidine, piperazine, pyridylamine, 2-thiazolylamine, 2-benzthiazolylamine, 2-benzoxazolylamine, 3-iminoisoindoleninylamine, pyridine, propylpyridine, 2,2-pyrylpyridine, 2,2-pyrid , 4,4-bipyridine, pyridazine, pyrimidine, pyrazine, imidazole, benzimidazole, isoxazole, benzisoxazole, oxazole, benzoxazole, thiazole, benzothiazole, quinoline, pyrrole, indole,

3,3-dimethylindole, aminopyridino, anilino, p-toluidine, p-tert. Butyl anilino, p-anisidine, isopropylanilino, butoxyanilino or naphthylamino, or

L ² independently of one another for methylisonitrile, ethylisonitrile,

Ethanolisonitrile, propylisonitrile, isopropylisonitrile, butylisonitrile, isobutylisonitrile, tert. Butylisonitrile, pentylisonitrile, tert-amylisonitrile, benzylisonitrile, methylphenylhexylisonitrile, aminopropylisonitrile, aminoethylisonitrile, 3-dimethylaminopropylisonitrile, 3-diethylaminopropylisonitrile, pyridylitrile, dibutylamine propyl isopropyl nitrilitrile, moribonitrile ) propylisonitrile, methoxyethylisonitrile, ethoxyethylisonitrile, methoxypropylisonitrile, ethoxypropylisonitrile, methoxyethoxypropylisonitrile, 3- (2-ethylhexyloxy) propylisonitrile, isopropyloxyisopropylisonitrile, dimethylisonitrile, di-ethylisonitrile, diethanolisonitrile, dipropylisitrile -butylisonitrile, dipentylisonitrile, di-tert-amylisonitrile, bis (2-ethylhexyl) isonitrile, bis (aminoethyl) isonitrile, bis (aminopropyl) isonitrile, bis (dimethylaminopropyl) isonitrile, bis (diethylaminopro-ρyl) isonitrile, bis ( diethylaminoet hyl) isonitrile, bis (dibutylamine pro- pyl) isonitrile, di (morpholinopropyl) isomtril, di (piperidinopropyl) isonitrile, di (pyrrolidinopropyl) isonitrile, di (pyrrolidonopropyl) isonitrile, bis (3- (methyl-hydroxyethylamino) propyl) isonifril, dimethoxyethylisonitrile, diethoxyethyloxilitrile, diethoxyethyloxysiloxilyl , Di (methoxyethoxyethyl) isonitrile, di (methoxyethoxypropyl) isonitrile, bis (3- (2-ethylhexyloxy) propyl) isonitrile, di (isopropyloxyisopropyl) isonitrile, tripropylisonitrile, tri (methoxyethoxyethyl) isonitrile, tri (methoxyethoxypropyl) isonitrile, pyridylisonitrile, 2-thiazolylisonitrile, 2-benzthiazolylisonitrile, 2-benzoxazolylisonitrile, 3-iminoisoindoleninylisonitrile, phenylisonitrile, p-tert.-butylphenylisonitrile, p-methoxyphenylisonitrile, isopropylphenylisononitrile, butoxypitrile, butoxypitrile

R ³ , R ⁴ , R ⁵ and R ⁶ independently of one another for chlorine, fluorine, bromine, iodine, cyano, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert. butyl,

Pentyl, tert. Amyl, hydroxyethyl, 3-dimethylaminopropyl, 3-diethylaminopropyl, phenyl, p-tert-butylphenyl, p-methoxyphenyl, isopropylphenyl, trifluoromethylphenyl, naphthyl, methylamino, ethylamino, propylamino, isopropylamino, butylamino, tert-butyl , Butylamino, pentylamino, tert. Amylamino, benzylamino,

Methylphenylhexylamino, Aminopropylamino, Aminoethylamino, 3-Diethylamino-propylamino, Diethylaminoethylpinoamino, Morpholinopropylamino, Piperidinopropylamino, Pyrrolidine , Ethoxypropylamino, methoxyethoxypropylamino, 3- (2-ethylhexyloxy) propylamino, isopropyloxypropylamino, dimethylamino, diethylamino, diethanolamino, dipropylamino, diisopropylamino, dibutylamino, diisobutylamino, di-tert. butylamino, dipentylamino,

Di-tert. amylamino, bis (2-ethylhexyl) amino, bis (aminopropyl) amino, Bis (aminoethyl) amino, bis (3-dimethylaminopropyl) amino, bis (3-diethylaminopropyl) amino, bis (diethylaminoethyl) amino, bis (dibutylamino propyl) amino, di (morpholinopropyl) amino, di (piperidinopropyl) amino, Di (pyrrolidinopropyl) amino, di (pyrrolidonopropyl) amino, bis (3- (methyl-hydroxyethylamino) propyl) amino, dimethoxyethylamino, diethoxyethylamino, dimethoxypropylamino, diethoxypropylamino, di (methoxyethoxyethyl) amino, di (methoxyethoxypropyl) amino, Bis (3- (2-ethylhexyloxy) propyl) amino, di (isopropyloxyisopropyl) amino, methoxy, ethoxy, propyloxy, isopropyloxy, butyloxy, isobutyloxy, tert-butyloxy, pentyloxy, tert. Amyloxy, methoxyethoxy, ethoxyethoxy, methoxypropyloxy, ethoxypropyloxy, methoxyethoxypropyloxy, 3- (2-ethylhexyloxy) propyloxy, phenyl, methylthio, ethylthio, propylthio, isopropylthio, butylthio, isobutylthio, tert.-butylthio, pentylthio , Methoxyphenyl, trifluoromethylphenyl, naphthyl, CO ₂ R ¹² , CONR ⁷ R ⁸ , NH-CORl ² ,

SO ₃ H, SO ₂ NR ⁷ R ⁸ or for a radical of the formula

wherein

for - CO—. -CH ₂ -0-, -C ₂ H ₄ -0-, -CH (CH ₃ ) 0- O

where the asterisk (*) indicates the connection with the 5-ring, w, x, y and z are independently 0 to 8 and w + x + y + z <12,

An ^" for chloride, bromide, fluoride, d- to C ₂₀ alkylCOO ^" , formate, oxalate, lactate, glycolate, citrate, CH ₃ OSO ₃ ^" , NH ₂ SO ₃ ^" , CH ₃ SO ₃ ^" ,

Vi SO ₄ ^{2 "} or 1/3 PO ₄ ^3" stands,

NR ⁷ R ⁸ for amino, methylamino, ethylamino, propylamino, isopropylamino, butylamino, isobutylamino, tert. Butylamino, pentylamino, tert. Amylamino, benzylamino, methylphenylhexylamino, 2-ethyl-1-hexylamino, hydroxyethylamino, aminopropylamino, aminoethylamino, 3-dimethylaminopropylamino, 3-diethylaminopropylamino, morpholinopropylamino, piperidinopropylamino, pyrrolidinopropylamino, hydroxylamino, pyrrolidonamino (hydroxylamino), pyrrolidamino , Methoxyethylamino, ethoxyethylamino, methoxypropylamino, ethoxypropylamino, methoxyethoxypropylamino, 3- (2-ethylhexyloxy) propylamino, isopropyloxyisopropylamino, dimethylamino, diethylamino, dipropylamino, diisopropylamino, dibutylamino, diisobutylamino. butylamino, dipentylamino, di-tert. amylamino, bis (2-ethylhexyl) amino, dihydroxyethylamino, bis (aminopropyl) amino, bis (aminoethyl) amino, bis (3-dimethylaminopropyl) amino, bis (3-diethylaminopropyl) amino, di (morpholinopropyl) amino , Di (piperidinopropyl) amino, di pyrrolidinopropyl) amino, di- (pyrrolidonopropyl) amino, bis (3- (methyl-hydroxyethylamino) propyl) amino, dimethoxyethylamino, diethoxyethylamino, dimethoxypropylamino, diethoxypropylamino, di (methoxyethoxypropyl) amino, Bis (3- (2-ethylhexyloxy) propyl) amino, di (isopropyloxyisopropyl) amino, anilino, p-toluidino, p-tert. Butylanilino, p-anisidino, isopropylanilino, naphthylamino or NR ⁷ R ⁸ , in particular pyrrolidino, piperidino, piperazino or morpholino, R ¹² for hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, tert-amyl, phenyl, p-tert-butylphenyl, p-methoxyphenyl, isopropylphenyl, p-trifluoromethylphenyl, cyano- phenyl, naphthyl, 4-pyridinyl, 2-pyridinyl, 2-quinolinyl, 2-pyrrolyl or 2-indolyl,

in which

the alkyl, alkoxy, aryl and heterocyclic radicals optionally further

Radicals such as alkyl, halogen, hydroxy, hydroxyalkyl, amino, alkylamino, dialkylamino, nitro, cyano, CO-NH ₂ , alkoxy, alkoxycarbonyl, morpholino, piperidino, pyrrolidino, pyrrohdono, trialkylsilyl, trialkylsiloxy or phenyl, which can carry alkyl and / or alkoxy residues can be saturated, unsaturated, straight-chain or branched, the alkyl residues can be partially or perhalogenated, the alkyl and / or alkoxy residues can be ethoxylated or propoxylated or silylated, neighboring alkyl and or alkoxy residues on aryl or heterocyclic residues together can form a three or four-unit bridge.

5. Optical data carrier according spoke 1, characterized in that the information layer which can be written on with light additionally contains a metal-containing or metal-free phthalocyanine different from (I), the central atom being selected from the groups: Si, Zn, Al, Cu, Pd, Pt , AU and Ag, especially Cu or Pd.

6. Optical data carrier with a described information layer, obtainable in that the optical data carrier according to claim 1 has been written with light having a wavelength of 700 to 830 nm.

7. The method for producing the optical data carrier according to claim 1, characterized in that on a transparent substrate the light-writable information layer by coating with the co-phthalocyanine complex of the formula I, optionally in combination with suitable binders, additives and suitable solvents , applies and optionally further provided with a reflection layer, optionally further intermediate layers and optionally a protective layer.

8. Use of co-phthalocyanine complexes of the formula (I) as light-absorbing compounds in the light-writable information layer of optical data memories.

9. Compounds of formula Ic

H ₂ NR ²

Co ^Θ Pc (SO ₂ NR ⁷ R ⁸ ) (halogen) ₀ . ₁₀ (alkoxy) ₀ . _{4 To} ι 1-4

H ₂ NR '(Ic)

embedded image in which

Halogen represents chlorine, bromine or fluorine,

• η 7 R

R and R independently of one another have the meaning according to R and R in claim 1,

Alkoxy stands for dC _ö -alkoxy, which is optionally substituted and Co ^® Pc, An ^θ , L ^! and L ^{2 have} the meaning given in claim 1.

10. A method for producing the compound according to claim 9, characterized

7 R characterized that one with sulfonamide groups of the formula SO NR R 7 R substituted, where R and R have the meaning given above, and optionally halogen and or alkoxy-substituted Co-phthalocyanine

1 oxidized and reacted with amines L and L.