GB1510424A - Conversion of isocyanate groups to carbodiimide groups - Google Patents

Conversion of isocyanate groups to carbodiimide groups

Info

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
Application number
GB1663176A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1663176A priority Critical patent/GB1510424A/en
Publication of GB1510424A publication Critical patent/GB1510424A/en
Expired legal-status Critical Current

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

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.
GB1663176A 1977-03-24 1977-03-24 Conversion of isocyanate groups to carbodiimide groups Expired GB1510424A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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