Patent US4447579A successfully refreshed from Google Patents.
US4447579A
Expired / Lapsed
US
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Epoxy resin adhesive compositions
Assignee: Tohto Kasei Co Ltd
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Filing: 1982-04-20
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Granted: 1984-05-08
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Expires: 2002-04-20
Abstract
Abstract The present invention relates to a room temperature curable epoxy resin adhesive composition having excellent T-peel strength, comprising an epoxy resin containing more than one epoxy group in a molecule on an average, and a hardener in the form of a polyamide-amine, which is obtained from reaction of polyamine with diene rubber having carboxyl terminal groups and other compound having carboxyl groups.
Inventors
- 👤 Yasuo Takagi
- 👤 Michiharu Horibe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:21
CPC Classifications
C; C08; C08G; C08G69/00; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/54; C08L; C08L77/00; C09; C09J; C09J163/00; Y; Y10; Y10S; Y10S525/00; Y10S525/911
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
73 words
A room temperature curable epoxy resin adhesive composition having excellent T-peel strength, comprising an epoxy resin containing an average of more than one epoxy group per molecule and a polyamide-amine hardener which is obtained by the reaction of a diene rubber having terminal carboxyl groups and the reaction product of an aliphatic polyamine and one or two compounds containing carboxyl groups selected from the group consisting of tall acid and polymerized fatty acid.
Claim 2
Dependent Claim
73 words
A room temperature curable epoxy resin adhesive composition having excellent T-peel strength, comprising an epoxy resin containing an average of more than one epoxy group per molecule and a polyamide-amine hardener which is obtained by the reaction of a diene rubber having terminal carboxyl groups and the reaction product of an aliphatic polyamine and one or two compounds containing carboxyl groups selected from the group consisting of tall acid and polymerized fatty acid.
Claim 3
Dependent Claim
27 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein said diene rubber component is a copolymer formed from acrylonitrile and butadiene.
Claim 4
Dependent Claim
22 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein said diene rubber component is a polybutadiene.
Claim 5
Dependent Claim
22 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein said diene rubber component is a polychloroprene.
Claim 6
Dependent Claim
22 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein said diene rubber component is a polyisoprene.
Claim 7
Dependent Claim
25 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein said compound containing carboxyl groups is a polymerized fatty acid.
Claim 8
Dependent Claim
59 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein said diene rubber component is in a ratio of 3-60 wt.% of total components of said polyamide-amine and said polyamine is in a ratio of 1.0-3.0 equivalents against 1.0 equivalent of total of said diene rubber component and said compound containing carboxyl groups component.
Claim 9
Dependent Claim
37 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein the mixing ratio of said hardener in the form of a polyamide-amine to said epoxy resin is 0.4:1 to 2.0:1 by equivalent.
Claim 10
Dependent Claim
30 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein said epoxy resin is a glycidyl ether epoxy resin or a glycidyl ester epoxy resin.
Claim 11
Dependent Claim
23 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 1, wherein said compound containing carboxyl groups is tall acid.
Claim 12
Dependent Claim
37 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 7, wherein the mixing ratio of said hardener in the form of a polyamide-amine to said epoxy resin is 0.4:1 to 2.0: by equivalent.
Claim 13
Dependent Claim
30 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 11, wherein said epoxy resin is a glycidyl ether epoxy resin or a glycidyl ester epoxy resin.
Claim 14
Dependent Claim
27 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 12, wherein said compound containing carboxyl groups is tall oil or polymerized fatty acid.
Claim 15
Dependent Claim
27 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 13, wherein said diene rubber component is a copolymer formed from acrylonitrile and butadiene.
Claim 16
Dependent Claim
22 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 13, wherein said diene rubber component is a polybutadiene.
Claim 17
Dependent Claim
22 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 13, wherein said diene rubber component is a polychloroprene.
Claim 18
Dependent Claim
22 words
The room temperature curable epoxy resin adhesive composition as set forth in claim 13, wherein said diene rubber component is a polyisoprene.
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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) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |