GB1510424A - Conversion of isocyanate groups to carbodiimide groups - Google Patents
Conversion of isocyanate groups to carbodiimide groupsInfo
- Publication number
- GB1510424A GB1510424A GB1663176A GB1663176A GB1510424A GB 1510424 A GB1510424 A GB 1510424A GB 1663176 A GB1663176 A GB 1663176A GB 1663176 A GB1663176 A GB 1663176A GB 1510424 A GB1510424 A GB 1510424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- groups
- isocyanate groups
- conversion
- carbodiimide
- mixture
- 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.)
- Expired
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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
-
- 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
- C08G18/02—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
- C08G18/025—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only the polymeric products containing carbodiimide groups
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1510424 Process for converting isocyanate groups to carbodiimide groups IMPERIAL CHEMICAL INDUSTRIES Ltd 24 March 1977 [23 April 1976] 16631/76 Heading C2C The conversion of from 3-50% of isocyanate groups in a mixture of methylene-bridged polyphenyl polyisocyanates into carbodiimide groups in a continuous manner is obtained by heating the mixture with a phosphorous-containing catalyst until the isocyanate groups have been reduced to the required amount followed by rapid cooling of the reaction mixture.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1663176A GB1510424A (en) | 1977-03-24 | 1977-03-24 | Conversion of isocyanate groups to carbodiimide groups |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1663176A GB1510424A (en) | 1977-03-24 | 1977-03-24 | Conversion of isocyanate groups to carbodiimide groups |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1510424A true GB1510424A (en) | 1978-05-10 |
Family
ID=10080811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1663176A Expired GB1510424A (en) | 1977-03-24 | 1977-03-24 | Conversion of isocyanate groups to carbodiimide groups |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1510424A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0057862A1 (en) * | 1981-02-05 | 1982-08-18 | Mobay Chemical Corporation | Partially carbodiimidised methylene bis (phenylisocyanate) having low temperature storage stability, a process for its preparation and its application as a starting material for the diisocyanate-polyaddition reaction |
US4397966A (en) | 1981-12-01 | 1983-08-09 | Basf Wyandotte Corporation | Alkylene oxide adducts of vicinal toluenediamine |
EP0189156A2 (en) * | 1985-01-25 | 1986-07-30 | BASF Corporation | Low temperature stable polymethylene polyphenylene polyisocyanates |
-
1977
- 1977-03-24 GB GB1663176A patent/GB1510424A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0057862A1 (en) * | 1981-02-05 | 1982-08-18 | Mobay Chemical Corporation | Partially carbodiimidised methylene bis (phenylisocyanate) having low temperature storage stability, a process for its preparation and its application as a starting material for the diisocyanate-polyaddition reaction |
US4397966A (en) | 1981-12-01 | 1983-08-09 | Basf Wyandotte Corporation | Alkylene oxide adducts of vicinal toluenediamine |
EP0189156A2 (en) * | 1985-01-25 | 1986-07-30 | BASF Corporation | Low temperature stable polymethylene polyphenylene polyisocyanates |
EP0189156A3 (en) * | 1985-01-25 | 1988-02-10 | BASF Corporation | Low temperature stable polymethylene polyphenylene polyisocyanates |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |