Patent US1295573A successfully refreshed from Google Patents.
Patent US4861832A successfully refreshed from Google Patents.
US4861832A
Expired / Lapsed
US
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Flexible epoxy film from an epoxy resin reacted with a ketimine/amine terminated butadiene/acrylonitrile copolymer blend
Assignee: Lord Corp
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Filing: 1988-04-04
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Granted: 1989-08-29
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Expires: 2008-04-04
Abstract
Abstract A two-component epoxy resin composition of improved cure rate is provided through the mixture of: A. an epoxy resin component, and B. a hardener component of curing Component A comprising a mixture of a ketimine and an amine-terminated butadiene/acrylonitrile copolymer rubber in a weight ratio of ketimine to said copolymer rubber of 47.1 to 12.5:52.9 to 87.5.
Inventors
- 👤 Michael L. Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:09
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08L; C08L63/00; Y; Y10; Y10S; Y10S525/00; Y10S525/939
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
51 words
A two-component epoxy resin composition comprising a mixture of: A. an epoxy resin component, and B. a hardener component for curing Component A comprising a mixture of a ketimine and an amine-terminated butadiene/acrylonitrile copolymer rubber in a weight ratio of ketimine to said copolymer rubber of 47.1 to 12.5:52.9 to 87.5.
Claim 2
Dependent Claim
51 words
A two-component epoxy resin composition comprising a mixture of: A. an epoxy resin component, and B. a hardener component for curing Component A comprising a mixture of a ketimine and an amine-terminated butadiene/acrylonitrile copolymer rubber in a weight ratio of ketimine to said copolymer rubber of 47.1 to 12.5:52.9 to 87.5.
Claim 3
Dependent Claim
28 words
An epoxy resin composition according to claim 1, wherein the epoxy resin component comprises a glycidyl polyether or polyester having an epoxide equivalent of about 100 to 2000.
Claim 4
Dependent Claim
18 words
An epoxy resin composition according to claim 1, wherein the epoxy resin component comprises glycidyl ether of bis(4-hydroxyphenyl)-2,2-propane.
Claim 5
Dependent Claim
19 words
An epoxy resin composition according to claim 1, wherein the ketimine is a ketimine of diethylene triamine and methylisobutylketone.
Claim 6
Dependent Claim
20 words
An epoxy resin composition according to claim 4, wherein the ketimine has an amine value of about 350 to 750.
Claim 7
Dependent Claim
20 words
An epoxy resin composition according to claim 1, wherein the amine-terminated butadiene/acrylonitrile copolymer rubber is a piperazine-terminated butadiene/acrylonitrile copolymer rubber.
Claim 8
Dependent Claim
41 words
An epoxy resin composition according to claim 6 wherein the amine-termined butadiene/acrylonitrile copolymer rubber comprises an acrylonitrile content of about 5 to 20% by weight and a butadiene content of about 95 to 80% by weight, based on the butadiene/acrylonitrile copolymer.
Claim 9
Dependent Claim
23 words
An epoxy resin composition according to claim 1, wherein the weight ratio of ketimine to copolymer rubber is 47.1 to 12.5:52.9 to 87.5.
Claim 10
Dependent Claim
28 words
An epoxy resin composition according to claim 1, wherein the ketimine is a ketimine of diethylene triamine and methylisobutylketone and the copolymer rubber is piperazine-terminated butadiene/acrylonitrile copolymer rubber.
Claim 11
Dependent Claim
23 words
An epoxy resin composition according to claim 9, wherein the weight ratio of ketimine to copolymer rubber is 47.1 to 12.5:52.9 to 87.5.
Claim 12
Dependent Claim
18 words
An epoxy resin composition according to claim 10, wherein the epoxy resin component comprises glycidyl ether of bis(4-hydroxyphenyl)-2,2-propane.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |