MX2008006844A

MX2008006844A - Odour reduction for agents containing hypochlorite

Info

Publication number: MX2008006844A
Application number: MXMX/A/2008/006844A
Authority: MX
Inventors: Malet Carlos; Osset Miguel; Mendoza Cruz Mercedes; Ibanez Pilar
Original assignee: Henkel Kommanditgesellschaft Auf Aktien; Ibanez Pilar; Malet Carlos; Mendoza Cruz Mercedes; Osset Miguel
Priority date: 2005-12-22
Filing date: 2008-05-28
Publication date: 2008-09-02

Abstract

The aim of the invention is to reduce the often unpleasant odour that remains on human skin, which has come into contact with agents containing chlorine bleach, in particular on the hands after using said agents. This is achieved by the use of perfumes, selected from the group containing diphenylmethane, diphenyl oxide, 2-methyl-naphthyl-ether and mixtures thereof.

Description

ODOR REDUCTION FOR AGENTS CONTAINING HYPOCLORITE The present invention relates to the use of odorants in bleaching agents containing hypochlorite in order to avoid an unpleasant odor of said agents in human skin, in particular in the hands, which has come into contact with the agent. Effective cleaning is one of the requirements that influences consumer acceptance of said agents. This requires agents that have ample stain removal potential to be available, whose agents can, for example, remove oily and greasy stains from textiles or from hard surfaces such as floor tiles or wall tiles. To meet this requirement, agents containing (among others) hypochlorite bleach have been developed, in which agents the hypochlorite contributes, as a strong oxidizing agent, to the chemical separation, destruction and removal of the stains. An additional advantage of the use of hypochlorite is that it acts as an effective disinfecting agent. However, a perceived disadvantage is that, after contact with human skin, whose contact necessarily occurs when said agents are used with the hands and that can not always be avoided in another way, for example when gloves are used, it happens that an odor adheres to the skin and can not always be removed completely even after several washes with water.

To remedy this, it has been proposed, for example in European Patent Application EP 439 878, to use a volatile perfume composition. European Patent Application EP 0606707 discloses agents which contain a polymer component together with a hypochlorite compound, and which leads to a decrease in the unpleasant odors of the agent itself and of the surfaces cleaned therewith. This could also be attributed to the high viscosity of said agents, so that the compounds that are responsible for the unfavorable odor are possibly encased in vesicles. Therefore, in the existing prior art, greater emphasis was given to avoiding disadvantageous odors of the real agent and of the surfaces cleaned therewith and less attention was given to the problem of odor formation on the surfaces of the skin that have entered the skin. contact with the agent. European Patent Application EP 0 812 909 A1 describes the use of polycarboxylate polymer in bleaching agents containing hypochlorite to avoid unpleasant odors resulting from the contact of said agents with the skin surfaces. European Patent Application EP 0622 451 also addresses the issue of odor formation during and after the use of chlorine-containing agents and proposes the use of a perfume. The difficulty found here is that, on the one hand, only a few fragrances are stable in the presence of the strong oxidizing ability of bleaching agents containing chlorine and, On the other hand, the smell of chlorine is very strong and difficult to mask using a perfume. EP 0 622 451 proposes the use, in said agents, of 0.000002% by weight up to 2% by weight of bleach-stable fragrances, selected from the classes of acetals, aldehydes, esters, alcohols, ketones, ethers, nitriles and terpenes. Surprisingly, it has now been found that a combination of specific odorants is particularly suitable for reducing the odor associated with chlorine bleach in human skin that has come in contact with agents containing chlorine bleach. The subject matter of the present invention is the use of odorants to decrease the odor of chlorine bleach on human skin that has come into contact with said chlorine bleach, the odorant being selected from the group comprising diphenylmethane, of diphenyl, 2-methyl naphthyl ether and mixtures thereof. In a preferred aspect of use, the skin is of the human hand. Preferably, the odorant comprises a combination of diphenylmethane and diphenyl oxide in a weight ratio from 1: 1 to 1:50, in particular from 1:10 to 1:15. further preferably comprises a combination of diphenylmethane and 2-methyl naphthyl ether in a weight ratio from 50: 1 to 1:10 in particular from 5: 1 to 1: 1. It is also preferred if the odorant comprises a combination of diphenyl oxide and 2-methyl ether naphthyl in a weight ratio from 250: 1 to 1: 1, in particular from 50: 1 to 5: 1. The aforementioned odorant can be applied as such or in the form of a preparation containing them, after the use of the chlorine-containing agent, on the areas of the skin which have come in contact with said agent. However, it is preferred that the odorant be part of the composition containing the chlorine bleach. The composition is preferably an aqueous liquid which is applied, undiluted or if applicable after mixing with water, on a textile surface or hard surface and containing 0.5% by weight up to 10% by weight, in particular 1% by weight up to 6% by weight, of alkali metal hypochlorite. In particular sodium hypochlorite. A further subject of the invention is a liquid bleaching agent containing water and comprising alkali metal hypochlorite and odorant, the odorant being selected from the group comprising diphenylmethane, diphenyl oxide, 2-methyl naphthyl ether and mixtures thereof. the same. A further subject of the invention is a method for bleaching stains on textiles and / or on hard surfaces, in which method a composition according to the present invention is used. An agent according to the present invention preferably contains 0.0005% by weight up to 0.005% by weight of diphenylmethane, 0.005% by weight up to 0.025% by weight of diphenyl oxide and / or 0.0001% by weight up to 0.005% by weight of ether from 2- methyl naphthyl. A composition according to the present invention which is also used in the context of the use according to the present invention preferably contains 0.1% by weight up to 2% by weight of alkali metal hydroxide and up to 5% by weight of stable surfactant to bleaching, in particular betaine and / or alkyl ether sulphate. Particularly preferred betaines are those of the general formula (I).

R2 R1-N + - (CH2) MCOO- (l) i ». wherein R1 is an alkyl or alkenyl group having from 6 to 22 carbon atoms or a group R4CO-NH- (CH2) n, R2 is hydrogen or an alkyl group having from 1 to 4 carbon atoms, R3 is hydrogen or an alkyl group having 1 to 4 carbon atoms, R 4 is an alkyl or alkenyl group having from 6 to 22 carbon atoms, m is a number from 1 to 6, and n is a number from 1 to 3. Examples of particularly suitable representatives of this class of surfactants include C12-18-alkyl dimethyl betaine, which can be obtained commercially as coconut betaine and C? 0 -6-alkyl dimethyl betaine, which can be obtained commercially as lauryl Betaine An additional class of agents Particularly preferred surfactants are the alkyl ether sulfates, which can be obtained by the reaction of alcohols (preferably having 6 to 22 carbon atoms) with alkylene oxides, in particular ethylene oxide and the subsequent sulfation and neutralization, in particular a C12-14 alkoxylated fatty alcohol sulfate ether with 2 equivalents of ethylene oxide. Preferably, the corresponding cation in the ether sulphates is sodium. Surfactants, if present, are preferably contained in amounts of up to 5% by weight, in particular from 0.01% by weight to 3% by weight, in stabilized agents according to the present invention. The preparations may additionally contain sequestering agents, preferably alkyl phosphonic acids and, among these latter, especially those having at least one amine oxide substituent in the alkyl group (referred to herein as amine oxide phosphonic acids), acids polyacrylics and / or polyacrylic acids comprising phosphono groups, whose acids may also be present in the form of their alkyl salts. The incorporation of said complexing agents surprisingly results in a particularly suitable gloss retention on the hard surfaces treated. This was not observed when other complexing agents were employed, for example methylglycliciacetic acid or nitriloacetic acid. The amine oxide phosphonic acids are usually made by acid oxidation aminoalkyl phosphonic Preferably they belong to the group of compounds according to the general formula (II) O CH3 H II 'HO-P- (CH2) x (CH) v-N- > 0 (ll) I I ORb H wherein R5 is hydrogen, a group - (CH2) «(CHCH3) v-NH2- > 0, or an alkali metal, x is a number from 1 to 4, and y is 0 or 1. Among the particularly preferred amine oxide phosphonic acids is aminotrimethylene phosphonic acid based on amine oxide. Preferably, said sequestering agents are present from 0.01% by weight to 2% by weight. The agents preferably contain from 0.5% by weight to 2% by weight of silicate, in particular alkali metal silicate, and / or 0.1% by weight to 2% by weight of carbonate, in particular alkali metal carbonate. The agents according to the present invention can be easily processed by mixing the aforementioned ingredients in the amounts indicated.

Claims

1. Use of odorants in order to decrease the odor of chlorine bleach in human skin that has come into contact with said chlorine bleach, wherein the odorant is selected from the group comprising diphenylmethane, diphenyl oxide, ether 2- methyl naphthyl and mixtures thereof.

2. The use according to claim 1, characterized in that the skin is in a human hand.

3. The use according to claim 1 or 2, characterized in that the odorant is part of the composition containing the chlorine bleach. The use according to one of claims 1 to 3, characterized in that the odorant contains diphenylmethane and diphenyl oxide in a weight ratio from 1: 1 to 1:50, in particular from 1:10 to 1: 5. The use according to one of claims 1 to 4, characterized in that the odorant contains diphenylmethane and 2-methyl naphthyl ether in a weight ratio from 50: 1 to 1:10, in particular from 5: 1 to 1. :1. The use according to one of claims 1 to 5, characterized in that the odorant contains diphenyl oxide and 2-methyl-naphthyl-ter in a weight ratio from 250: 1 to 1: 1, in particular from 50: 1 to 5: 1. The use according to one of claims 3 to 6, characterized in that the composition is an aqueous liquid that is applied, undiluted or if applicable after mixing with water, on a textile surface or hard surface and containing 0.5% by weight up to 10% by weight, in particular 1% by weight. weight up to 6% by weight, of alkali metal hypochlorite, in particular sodium hypochlorite. The use according to one of claims 3 to 7, characterized in that the composition contains 0.1% by weight up to 2% by weight of alkali metal hydroxide and up to 5% by weight of bleach-stable surfactant, in particular betaine and / or alkyl ether sulfate. The use according to one of claims 3 to 8, characterized in that the composition contains 0.5% by weight up to 2% by weight of silicate, in particular alkali metal silicate, 0.01% by weight up to 2% by weight of acid organophosphonate and / or phosphonate, in particular amine oxide phosphonic acid, polyacrylic acid containing phosphono groups and / or an alkali metal salt of one or both acids and / or 0.1% by weight up to 2% by weight of carbonate, Particular alkali metal carbonate. 10. The use according to one of claims 3 to 9, characterized in that the composition contains 0.00005% by weight up to 0.005% by weight of diphenylmethane, 0.0005% by weight up to 0.025% by weight of diphenyl oxide and / or 0.0001% by weight up to 0.005% by weight of 2-methyl ether naphthyl. 11. The use according to one of claims 3 to 10, characterized in that the composition before being used is mixed with water in amounts from 1 part by volume to 100 parts by volume, in particular 2 parts by volume up to 10 parts by volume, per 1 part by volume of the particular liquid composition. 12. an aqueous liquid bleaching agent containing alkali metal hypochlorite and odorant, wherein the odorant is selected from the group comprising diphenylmethane, diphenyl oxide, 2-methyl naphthyl ether and mixtures thereof. The agent according to claim 12, characterized in that it contains 0.5% by weight up to 10% by weight, in particular 1% by weight, up to 6% by weight of alkali metal hypochlorite, in particular sodium hypochlorite. The agent according to claim 12 or 13, characterized in that it contains 0.1% by weight up to 2% by weight of alkali metal hydroxide and up to 5% by weight of bleach-stable surfactant, in particular betaine and / or alkyl ether sulfate. The agent according to one of claims 12 to 14, characterized in that it contains 0.5% by weight up to 2% by weight of silicate, in particular alkali metal silicate, 0.01% by weight up to 2% by weight of phosphonic acid and or phosphonate, in particular ammonium oxide phosphonic acid, polyacrylic acid containing phosphono groups and / or alkali metal salt of one or both acids, and / or 0.1% by weight up to 2% by weight of carbonate, in particular alkali metal carbonate 16 The agent according to one of claims 12 to 15, characterized in that it contains diphenylmethane and diphenyl oxide in a weight ratio from 1 to 1 50, in particular 1 to 1 to 17. according to one of claims 12 to 16, characterized in that it contains diphenylmethane and 2-methyl naphthyl ether in a weight ratio from 50 1 to 1 10, in particular from 5 1 to 1 1 18 The agent according to one of the claims 12 to 17, characterized in that it contains diphenyl oxide and 2-methyl naphthyl ether in a weight ratio from 250 1 to 1 1, in particular from 50 1 to 5 1 19 The agent according to one of claims 12 to 18 , characterized in that it contains 00005% by weight up to 0 005% by weight of diphenylmethane, 0005% by weight up to 0025% by weight of diphenyl oxide and / or 00001% by weight up to 0005% by weight of 2-methyl? Naphthyl ether 20 A method for bleaching textile stains and / or hard surfaces, characterized in that the composition according to claims 12 to 19 is used.