US3624032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy compositions cured with carboxylic acid anhydrides and metallic salt of acetylacetone
Assignee: Morton International LLC
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Filing: 1969-04-24
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Granted: 1971-11-30
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Expires: 1989-04-24
Abstract
Abstract A curable epoxy composition comprising an epoxy resin, a polycarboxylic acid anhydride curing agent, and, as a cure catalyst, a polyvalent metal complex of acetylacetone said composition, having improved storage stability, and thermoset properties, and a process for the preparation thereof.
Inventors
- 👤 James J Miyashiro
- 👤 Alfred W Seiling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:03
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/68; C08G59/70; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and zinc acetylacetonate.
Claim 2
Dependent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and iron acetylacetonate.
Claim 3
Dependent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and aluminum acetylacetonate.
Claim 4
Dependent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and copper acetylacetonate.
Claim 5
Dependent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and cobalt acetylacetonate.
Claim 6
Dependent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and tin acetylacetonate.
Claim 7
Dependent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and magnesium acetylacetonate.
Claim 8
Dependent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and nickel acetylacetonate.
Claim 9
Dependent Claim
24 words
An epoxy molding composition consisting essentially of an epoxy resin having a plurality of 1,2-epoxy groups, a cyclic carboxylic acid anhydride and zirconium acetylacetonate.
Claim 10
Dependent Claim
44 words
A composition according to claim 1 wherein the polycarboxylic acid anhydride is selected from a group consisting of phthalic anhydride, tetrachlorophthalic anhydride, benzophenonetetracarboxylic dianhydride (BTDA), pyromellitic dianhydride (PMDA), the dianhydride of 1,2,3,4-cyclopentanetetracarboxylic acid (CPDA), trimellitic anhydride, endomethylene tetrahydrophthalic anhydride, chlorendic anhydride, and hexahydrophthalic anhydride.
Claim 11
Dependent Claim
25 words
A composition according to claim 1 wherein the ratio on an equivalent weight basis of anhydride to epoxy is from about 0.3:1 to about 1:1.
Claim 12
Dependent Claim
31 words
A composition according to claim 1 wherein the metal complex of acetylacetone is present in a concentration of from about 0.1 to about 10 parts by weight per 100 parts resin.
Claim 13
Dependent Claim
66 words
An epoxy molding composition consisting essentially of an epoxy resin, having a plurality of 1,2-epoxy groups, a cyclic polycarboxylic acid anhydride and zinc acetylacetonate wherein the ratio on an equivalent weight basis of anhydride to epoxy is from about 0.5:1 to about 0.7:1 and the zinc acetylacetonate is present in an amount ranging from about 1 to about 5 parts by weight per 100 parts resin.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |