US4069202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable polyepoxide casting compositions
Assignee: Shell USA Inc
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Filing: 1975-10-17
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Granted: 1978-01-17
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Expires: 1995-10-17
Abstract
Abstract Rapid curing polyepoxide compositions comprise (1) a polyepoxide, and (2) a curing composition comprising (a) a liquid organic dibasic acid and (b) a tertiary amine such as benzyldimethylamine.
Inventors
- 👤 James E. Carey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:23
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4215; C08G59/68; C08G59/686
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A heat-curable composition comprising (1) 100 parts by weight of a polyepoxide processing more than one 1,2-epoxide group and (2) from 20 to 60 parts by weight of a curing composition comprising (a) 100 parts by weight of a liquid organic dicarboxylic acid of the general formula ##STR4## wherein R 1 is an alkyl group of up to about 10 carbon atoms and R 2 is an alkylene group of up to 12 carbon atoms and (b) from about 2 to 10 parts by weight of a tertiary amine selected from the group consisting of benzyldimethylamine, tridimethyl amino methyl phenols, and salts thereof.
Claim 2
Dependent Claim
103 words
A heat-curable composition comprising (1) 100 parts by weight of a polyepoxide processing more than one 1,2-epoxide group and (2) from 20 to 60 parts by weight of a curing composition comprising (a) 100 parts by weight of a liquid organic dicarboxylic acid of the general formula ##STR4## wherein R 1 is an alkyl group of up to about 10 carbon atoms and R 2 is an alkylene group of up to 12 carbon atoms and (b) from about 2 to 10 parts by weight of a tertiary amine selected from the group consisting of benzyldimethylamine, tridimethyl amino methyl phenols, and salts thereof.
Claim 3
Dependent Claim
14 words
A composition of claim 1 wherein the polyepoxide is a glycidyl polyether of 2,2-bis(4-hydroxyphenyl)propane.
Claim 4
Dependent Claim
21 words
A composition of claim 1 wherein the organic dicarboxylic acid is a C 21 organic acid of the general structure: ##STR5##
Claim 5
Dependent Claim
12 words
A composition as in claim 1 wherein the tertiary amine is benzyldimethylamine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |