US3686359A
Expired / Lapsed
US
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Curable polyepoxide compositions
Assignee: Union Carbide Corp
•
Filing: 1969-12-19
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Granted: 1972-08-22
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Expires: 1989-12-19
Abstract
Abstract This application relates to curable compositions, based on cycloaliphatic epoxides in admixture with epoxy hardeners and polymers of butadiene, which can be cast into articles of desired configuration or used as binders in the preparation of laminates, and cured at elevated temperatures to form articles characterized by excellent physical properties such as tensile strength, toughness, resistivity to development and propagation of internal cracks, heat distortion temperatures and also characterized by excellent electrical properties.
Inventors
- 👤 Anthony C Soldatos
- 👤 Allison S Burhans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
C; C08; C08L; C08L13/00; C08C; C08C19/00; C08C19/30; C08L19/00; C08L19/006; C08L63/00; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/092; Y; Y10; Y10S; Y10S525/00; Y10S525/911
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
16 words
A curable composition as defined in claim 1 wherein the cycloaliphatic epoxide is a cyclohexane diepoxide.
Claim 2
Dependent Claim
15 words
A curable composition as defined in claim 1 wherein the cycloaliphatic epoxide has the formula:
Claim 3
Dependent Claim
18 words
A curable composition as defined in claim 3 wherein R1 through R9 are hydrogen and R is (CH2)4.
Claim 4
Dependent Claim
15 words
A curable composition as defined in claim 1 wherein the cycloaliphatic epoxide has the formula:
Claim 5
Dependent Claim
14 words
A curable composition as defined in claim 5 wherein R1 through R9 are hydrogen.
Claim 6
Dependent Claim
25 words
A curable composition as defined in claim 1 wherein the hardener is a phenolic epoxy hardener having at least two phenolic hydroxyl groups per molecule.
Claim 7
Dependent Claim
24 words
A curable composition as defined in claim 1 wherein the hardener is a polybasic acid having at least two carboxylic acid groups per molecule.
Claim 8
Dependent Claim
18 words
A curable composition as defined in claim 1 wherein the hardener is an anhydride of a polybasic acid.
Claim 9
Dependent Claim
15 words
A curable composition as defined in claim 9 wherein the anhydride is hexahydrophthalic acid anhydride.
Claim 10
Dependent Claim
17 words
A curable composition as defined in claim 1 wherein the butadiene polymer is a homopolymer of butadiene.
Claim 11
Dependent Claim
19 words
A curable composition as defined in claim 1 wherein the butadiene polymer is a copolymer of acrylonitrile and butadiene.
Claim 12
Dependent Claim
22 words
A curable composition as defined in claim 1 wherein the butadiene polymer has a molecular weight of about 500 to about 15,000.
Claim 13
Dependent Claim
22 words
A curable composition as defined in claim 1 wherein the butadiene polymer has a molecular weight of about 1,000 to about 10,000.
Claim 14
Dependent Claim
10 words
The cured product of the composition defined in claim 1.
Claim 15
Dependent Claim
19 words
A composition as defined in claim 1 comprising 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexane carboxylate, a homopolymer of butadiene and hexahydrophthalic acid anhydride.
Claim 16
Dependent Claim
21 words
A composition as defined in claim 1 comprising 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexane carboxylate, a copolymer of butadiene and acrylonitrile and hexahydrophthalic acid anhydride.
Claim 17
Dependent Claim
17 words
A curable composition as defined in claim 7 wherein the phenolic hardener is a phenol-formaldehyde novolac resin.
Claim 18
Dependent Claim
15 words
A curable composition as defined in claim 8 wherein the polybasic acid is phthalic acid.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |