Patent EP0082528B1 successfully refreshed from Google Patents.
EP0082528B1
Expired / Lapsed
EP
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Silane containing isocyanate terminated polyurethane polymers
Assignee: Union Carbide Corp
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Filing: 1982-12-21
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Granted: 1986-04-30
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Expires: 2002-12-21
Abstract
Abstract Curable isocyanate prepolymers have been made in which all or a portion of the available isocyanate terminal groups have been reacted with a secondary amine-containing silane monomer having two trialkoxy silane groups.
Inventors
- 👤 Mitchell Harvey Berger
- 👤 Robert James Ward
- 👤 Walter Paul Mayer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:29
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1021; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G2190/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
171 words
A curable composition comprising the reaction product of an isocyanate terminated polyurethane prepolymer having at least 2 urethane linkages per polymer molecule and a bis-silane, said reaction product having a number average molecular weight of 750 to 20,000 and having 2 to 9 functional groups, per average molecular weight, selected from: wherein R is a lower alkyl having 1 to 6 carbons; R 1 is a lower alkyl having 1 to 4 carbons; each of R 2 and R 3 is an alkylene radical having 2 to 18 carbons or arylene radicals having 6 to 18 carbons, and a is an integer having values of 0 to 2 each of R 4 and R 5 is an alkylene radical having 1 to 4 carbons, and Q is a monovalent radical selected from hydrogen, alkyl having 1 to 4 carbons, phenyl, COOR' or-CN; with the proviso that at least 0.1 percent of the total of said functional groups (1), (2), (3) and (4) is at least one of (2), (3) or (4).
Claim 2
Dependent Claim
171 words
A curable composition comprising the reaction product of an isocyanate terminated polyurethane prepolymer having at least 2 urethane linkages per polymer molecule and a bis-silane, said reaction product having a number average molecular weight of 750 to 20,000 and having 2 to 9 functional groups, per average molecular weight, selected from: wherein R is a lower alkyl having 1 to 6 carbons; R 1 is a lower alkyl having 1 to 4 carbons; each of R 2 and R 3 is an alkylene radical having 2 to 18 carbons or arylene radicals having 6 to 18 carbons, and a is an integer having values of 0 to 2 each of R 4 and R 5 is an alkylene radical having 1 to 4 carbons, and Q is a monovalent radical selected from hydrogen, alkyl having 1 to 4 carbons, phenyl, COOR' or-CN; with the proviso that at least 0.1 percent of the total of said functional groups (1), (2), (3) and (4) is at least one of (2), (3) or (4).
Claim 3
Dependent Claim
18 words
Composition claimed in claim 1 containing 0.1 to 100 percent of functional groups (2) or (3) or (4).
Claim 4
Dependent Claim
11 words
Composition claimed in claim 2 wherein the functional group (2) is:
Claim 5
Dependent Claim
11 words
Composition claimed in claim 2 wherein the functional group (3) is:
Claim 6
Dependent Claim
11 words
Composition claimed in claim 2 wherein the functional group (4) is:
Claim 7
Dependent Claim
34 words
Composition claimed in claims 1-5 wherein the polyurethane is the reaction product of polyoxyalkylene polyol and an aromatic diisocyanate or the reaction product of a polyoxyalkylene diol, a polyoxyalkylene triol and an aromatic polyisocyanate.
Claim 8
Dependent Claim
20 words
Composition claimed in claim 6 wherein the polyoxyalkylene polyol is a polyoxyalkylene glycol and the aromatic diisocyanate is toluene diisocyanate.
Claim 9
Dependent Claim
27 words
Composition claimed in claim 6 wherein the polyoxyalkylene diol is a polyoxypropylene glycol, the polyoxyalkylene triol is a polyoxypropylene triol and the aromatic polyisocyanate is toluene diisocyanate.
Claim 10
Dependent Claim
11 words
The cured polymer of one of the claims 1 to 8.
Claim 11
Dependent Claim
13 words
A sealant composition comprising the curable composition claimed in claim 1 to 8.
Claim 12
Independent Claim
13 words
A method of formulating a sealant composition having enhanced wet adhesion which comprises:
Claim 13
Independent Claim
13 words
A method of formulating a sealant composition having enhanced wet adhesion which comprises:
Claim 14
Dependent Claim
19 words
(1) reacting a polyol with a stoichiometric excess of a polyisocyanate to provide an -NCO terminated polyurethane prepolymer; and
Claim 15
Dependent Claim
19 words
(1) reacting a polyol with a stoichiometric excess of a polyisocyanate to provide an -NCO terminated polyurethane prepolymer; and
Claim 16
Dependent Claim
32 words
(2) end-capping at least 0.1% of said -NCO terminal groups by contacting them with a bis-silane containing a reactive hydrogen atom selected from (2), (3) or (4) as defined in claim 1.
References Cited (Backward Citations)
No citation records indexed.
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