Patent EP0005903A2 successfully refreshed from Google Patents.
EP0005903A2
Expired / Lapsed
EP
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Process for the manufacture of polyurea foams
Assignee: Imperial Chemical Industries Ltd
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Filing: 1979-04-25
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Granted: —
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Expires: 1999-04-25
Abstract
Abstract A process for the manufature of polyurea foams which comprises reacting an organic polyisocyanate with at least a chemically equivalent amount of water in the presence of a catalyst for the reaction and a triaryl phosphate and/or an aromatic halogen compound. The foams are more resistant to the effects of prolonged exposure to heat or humidity than similar foams containing tris(halogenoalkyl)phosphates.
Inventors
- 👤 Alan Metcalf Wooler
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 12:56
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/14; C08J9/0014; C08J9/0023; C08J9/0038; C08K; C08K5/00; C08K5/04; C08K5/06; C08K5/10; C08K5/49; C08K5/51; C08K5/53; C08L; C08L61/00; C08L61/04; C08L61/06; C08L61/20; C08L75/00; C08L75/02; C08J2375/00; C08J2375/02; C08J2461/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
A process for the manufacture of polyurea foams which comprises reacting an organic polyisocyanate with at least a chemically equivalent amount of water in the presence of a catalyst for the reaction and a triaryl phosphate and/or an aromatic halogen compound.
Claim 2
Dependent Claim
41 words
A process for the manufacture of polyurea foams which comprises reacting an organic polyisocyanate with at least a chemically equivalent amount of water in the presence of a catalyst for the reaction and a triaryl phosphate and/or an aromatic halogen compound.
Claim 3
Dependent Claim
34 words
A process as claimed in claim 1 wherein the triaryl phosphate and/or aromatic halogen compound is used in an amount of from 10 to 200% by weight based on the weight of the polyisocyanate.
Claim 4
Dependent Claim
33 words
A process as claimed in claim 2 wherein the triaryl phosphate and/or aromatic halogen compound is used in an amount of from 25 to 75% by weight based on the weight of polyisocyanate.
Claim 5
Dependent Claim
23 words
A process as claimed in any one of the preceding claims wherein the foam-forming reaction mixture also contains an amino or phenolic resin.
References Cited (Backward Citations)
No citation records indexed.
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