FR2119906A1 - Stable polyurethane solns - by controlled reaction of urethane prepolymer with a chain lengthening agent - Google Patents
Stable polyurethane solns - by controlled reaction of urethane prepolymer with a chain lengthening agentInfo
- Publication number
- FR2119906A1 FR2119906A1 FR7126621A FR7126621A FR2119906A1 FR 2119906 A1 FR2119906 A1 FR 2119906A1 FR 7126621 A FR7126621 A FR 7126621A FR 7126621 A FR7126621 A FR 7126621A FR 2119906 A1 FR2119906 A1 FR 2119906A1
- Authority
- FR
- France
- Prior art keywords
- solns
- addn
- chain lengthening
- urethane prepolymer
- lengthening agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0838—Manufacture of polymers in the presence of non-reactive compounds
- C08G18/0842—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents
- C08G18/0847—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of solvents for the polymers
- C08G18/0852—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of solvents for the polymers the solvents being organic
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Polyurethanes Or Polyureas (AREA)
- Artificial Filaments (AREA)
Abstract
Polyurethane solns. are prepd. by reaction in solvent of a bifunctional urethane prepolymer (I) with terminal NCO gps. with the reactive H-atoms of a bifunctional chain lengthening agent (II) where x, the ratio of addn. of (I) being the % molar proportion of (I) added at a given moment to the total amt. of (II) added and y, the ratio of addn. of (II) being the % molar proportion of (II) to be added in the time interval between start of the addn. of (II) and 90% addn. satisfy x + 35 >=y >=100X/95 The control of the chain lengthening reaction gives solns. with improved shelf life suitable for moulded products, filaments, films and coatings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP45064273A JPS4911476B1 (en) | 1970-07-24 | 1970-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2119906A1 true FR2119906A1 (en) | 1972-08-11 |
| FR2119906B1 FR2119906B1 (en) | 1976-02-13 |
Family
ID=13253425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7126621A Granted FR2119906A1 (en) | 1970-07-24 | 1971-07-21 | Stable polyurethane solns - by controlled reaction of urethane prepolymer with a chain lengthening agent |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS4911476B1 (en) |
| BE (1) | BE770025A (en) |
| CH (1) | CH544132A (en) |
| DE (1) | DE2136695A1 (en) |
| ES (1) | ES393507A1 (en) |
| FR (1) | FR2119906A1 (en) |
| NL (1) | NL7110116A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2409789C3 (en) * | 1974-03-01 | 1981-08-20 | Akzo Gmbh, 5600 Wuppertal | Process for the production of polyurethane solutions and their application |
| JPS54153371U (en) * | 1978-04-18 | 1979-10-25 |
-
1970
- 1970-07-24 JP JP45064273A patent/JPS4911476B1/ja active Pending
-
1971
- 1971-07-15 BE BE770025A patent/BE770025A/en unknown
- 1971-07-19 CH CH1057171A patent/CH544132A/en not_active IP Right Cessation
- 1971-07-21 FR FR7126621A patent/FR2119906A1/en active Granted
- 1971-07-22 NL NL7110116A patent/NL7110116A/xx unknown
- 1971-07-22 ES ES393507A patent/ES393507A1/en not_active Expired
- 1971-07-22 DE DE19712136695 patent/DE2136695A1/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| NEANT * |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7110116A (en) | 1972-01-26 |
| FR2119906B1 (en) | 1976-02-13 |
| JPS4911476B1 (en) | 1974-03-16 |
| BE770025A (en) | 1971-11-16 |
| CH544132A (en) | 1973-11-15 |
| DE2136695A1 (en) | 1972-02-10 |
| ES393507A1 (en) | 1974-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |