US4069203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid curing polyepoxide 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, (2) a liquid organic dibasic acid and (3) an imidazole compound.
Inventors
- 👤 James E. Carey
- 👤 Lawrence C. Reilly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:15
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/686; C08G59/40; C08G59/42; C08G59/4215
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A rapid heat-curable composition comprising (1) 100 parts by weight of a polyepoxide having more than 1,2-epoxide group, and (2) from 30 to 70 parts by weight of a composition comprising (a) 100 parts by weight of a liquid organic dicarboxylic acid of the general formula: ##STR5## wherein R 1 is an alkyl group of up of about 10 carbon atoms and R 2 is an alkylene group of up to 12 carbon atoms, and (b) about at least 1.75 parts by weight of an imidazole compound of the general formula: ##STR6## wherein R is selected from the group consisting of hydrogen atoms, halogen atoms and hydrocarbon radicals containing no more than 15 carbon atoms.
Claim 2
Dependent Claim
115 words
A rapid heat-curable composition comprising (1) 100 parts by weight of a polyepoxide having more than 1,2-epoxide group, and (2) from 30 to 70 parts by weight of a composition comprising (a) 100 parts by weight of a liquid organic dicarboxylic acid of the general formula: ##STR5## wherein R 1 is an alkyl group of up of about 10 carbon atoms and R 2 is an alkylene group of up to 12 carbon atoms, and (b) about at least 1.75 parts by weight of an imidazole compound of the general formula: ##STR6## wherein R is selected from the group consisting of hydrogen atoms, halogen atoms and hydrocarbon radicals containing no more than 15 carbon atoms.
Claim 3
Dependent Claim
14 words
A composition of claim 1 wherein the polyepoxide is a glycidyl polyester of 2,2-bis(4-hydroxyphenyl)propane.
Claim 4
Dependent Claim
22 words
A composition as in claim 1 wherein the organic dicarboxylic acid is a C 21 organic acid of the general structure: ##STR7##
Claim 5
Dependent Claim
12 words
A composition as in claim 1 wherein the imidazole compound is imidazole.
Claim 6
Dependent Claim
53 words
A composition as in claim 1 comprising (1) 100 parts by weight of the polyepoxide and (2) from 30 to 70 parts by weight of a catalyzed composition comprising (a) 100 parts by weight of the liquid organic dicarboxylic acid and (b) from 2 to 10 parts by weight of the imidazole compound.
Claim 7
Dependent Claim
20 words
A composition as in claim 5 wherein from 40 to 60 parts by weight of the catalyzed composition is employed.
Claim 8
Dependent Claim
19 words
A composition as in claim 5 wherein from 2 to 10 parts by weight of imidazole compound is employed.
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) | 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 |