EP0118171A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Production of polyurethane-forming components having free-isocyanate or hydroxy groups
Assignee: Lyondell Chemical Technology LP
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Filing: 1984-01-18
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Granted: —
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Expires: 2004-01-18
Abstract
Abstract Polymeric materials having free hydroxyl or isocyanate groups are produced by a) polymerizing an ethylenically-unsaturated monomer to form a liquid polymer, b) combining the liquid polymer with an active component having hydroxyl or isocyanate groups, and c) crosslinking the liquid polymer. The resulting polyol or isocyanate prepolymer polymer product can be used in a polyurethane-forming reaction. The process enables the microstructure of the polyol or isocyanate prepolymer polymer to be controlled whereby to provide better control of the properties of the polyurethane.
Inventors
- 👤 Michael Cuscurida
- 👤 George Phillip Speranza
- 👤 Richard Joseph Gilbert Dominguez
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 23:02
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08L75/08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08G18/698
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
A method of producing a polyurethane-forming composition containing a cross-linked polymer obtained from an ethylenically-unsaturated monomer, and an active component containing free hydroxyl or isocyanate groups characterised in that the active component is mixed with a liquid polymer obtained by polymerizing the ethylenically-unsaturated monomer in a medium differing from the active component, and the liquid polymer is cross-linked in the presence of said active component .
Claim 2
Independent Claim
66 words
A method of producing a polyurethane-forming composition containing a cross-linked polymer obtained from an ethylenically-unsaturated monomer, and an active component containing free hydroxyl or isocyanate groups characterised in that the active component is mixed with a liquid polymer obtained by polymerizing the ethylenically-unsaturated monomer in a medium differing from the active component, and the liquid polymer is cross-linked in the presence of said active component .
Claim 3
Dependent Claim
24 words
A method according to claim 1 characterised in that the molecular weight of the liquid polymer has a molecular weight from 1800 to 8000.
Claim 4
Dependent Claim
18 words
A method according to claim 1 or 2 characterised in that the liquid polymer is a butadiene polymer.
Claim 5
Dependent Claim
15 words
A method according claim 3 characterised in that the butadiene polymer is a butadiene homopolymer.
Claim 6
Dependent Claim
17 words
A method according to claim 3 characterised in that the butadiene polymer is a hydroxyl-terminated butadiene-ethylene copolymer.
Claim 7
Independent Claim
36 words
A method according to any one of claims 1. to 5 characterised in that the active component is a polyether polyol having a functionality from 2 to 6 and a molecular weight from 2000 to 10,000.
Claim 8
Independent Claim
25 words
A method according to any one of claims 1 to 5 characterised in that the active component is a polyol modified with an epoxy resin.
Claim 9
Independent Claim
32 words
A method according to any one of claims 1 to 4 characterised in that the active component is an isocyanate-terminated prepolymer formed by reacting an excess of polyisocyanate with a polyether polyol.
Claim 10
Dependent Claim
28 words
A method according to claim 8 characterised in that the isocyanate-terminated prepolymer is formed by reacting an excess of polyisocyanate with a polyol modified with an epoxy resin.
Claim 11
Dependent Claim
25 words
The use of polyurethane-forming composition according to any of claims 1 to 9 in the formation of polyurethanesby reaction with a polyisocyanate or a polyol.
References Cited (Backward Citations)
No citation records indexed.
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