Patent US3673277A successfully refreshed from Google Patents.
US3673277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting resin of polyamide and copolymer of polycarboxylic acid and an olefin
Assignee: Scholven Chemie AG
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Filing: 1969-06-03
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Granted: 1972-06-27
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Expires: 1989-06-03
Abstract
Abstract Thermosetting resin composition comprising: A. AS A FIRST COMPONENT, POLYAMIDE WHICH IS SUBSTANTIALLY NONCRYSTALLINE AND HAS AN AVERAGE MOLECULAR WEIGHT OF LESS THAN 5,000, B. AS A SECOND COMPONENT, A COPOLYMER OF ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID, ANHYDRIDE, PARTIAL ESTER, OR PARTIAL AMIDE THEREOF, MIXTURE OF TWO OR MORE OF THE FREE ACID, ANHYDRIDE, PARTIAL ESTER AND PARTIAL AMIDE, AND AN OLEFIN OR ETHYLENICALLY UNSATURATED ETHER OR ESTER, OR A MIXTURE OF TWO OR MORE OF SAID OLEFIN, ETHER, OR ESTER, THE CARBOXYL GROUP CONTENT OF COPOLYMER BEING 25-70 MOLE PERCENT, THE AVERAGE MOLECULAR WEIGHT OF THE COPOLYMER BEING LESS THAN ABOUT 5,000, C. THE WEIGHT PERCENT OF POLYAMIDE BEING 10-99 PERCENT BASED ON THE POLYAMIDE PLUS COPOLYMER. Thermoset articles produced from the resin can be transparent. The thermosetting resin, thermoset articles, the thermoset resin and the process of producing the thermoset resin are claimed.
Inventors
- 👤 Karl Schmitt
- 👤 Fritz Guda
- 👤 Siegfried Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:18
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/06; C09; C09D; C09D135/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
14 words
Thermosetting resin composition according to claim 1, said polyamide being soluble in alcoholic solvent.
Claim 2
Dependent Claim
51 words
Thermosetting resin composition according to claim 1, the average molecular weight of said polyamide being less than about 3,000, the average molecular weight of the copolymer being less than about 3,000, said mole percent of carboxyl groups being about 33-70 percent, and said weight percent of polyamide being about 20-95 percent.
Claim 3
Dependent Claim
12 words
Thermosetting resin composition according to claim 2, said polyamide having branch substituents.
Claim 4
Dependent Claim
25 words
Thermosetting resin composition according to claim 2, said polyamide containing diamine residues, 10 to 100 percent of the diamine residues being residues of 2,4,4-and/or 2,2,4-trimethylhexamethylenediamine.
Claim 5
Dependent Claim
16 words
Thermosetting resin composition according to claim 2, said polyamide containing cyclic residues in the polymer chain.
Claim 6
Dependent Claim
21 words
Thermosetting resin composition according to claim 2, said polyamide containing diamine residues, said diamine residues being 10-100 percent residues of 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane.
Claim 7
Dependent Claim
47 words
Thermosetting resin composition according to claim 2, said copolymer being a copolymer of maleic acid, maleic anhydride, a partial ester of maleic acid and an alcohol of up to four carbon atoms, or a partial amide of maleic acid, or a mixture of two or more thereof.
Claim 8
Dependent Claim
14 words
Thermosetting resin composition according to claim 8, said copolymer being a copolymer of styrene.
Claim 9
Dependent Claim
15 words
Thermosetting resin composition according to claim 1, the polyamide terminal groups being mostly NH2 groups.
Claim 10
Dependent Claim
23 words
Thermosetting resin composition according to claim 10, the average molecular weight of said polyamide and said copolymer being each less than about 2,000.
Claim 11
Dependent Claim
16 words
Thermosetting resin composition according to claim 1, said polyamide and said copolymer being partially condensed together.
Claim 12
Dependent Claim
17 words
Thermosetting resin composition according to claim 1, said resin being an aqueous ammonia or aqueous amine medium.
Claim 13
Dependent Claim
12 words
Shaped articlE formed of a cured, thermoset resin according to claim 1.
Claim 14
Dependent Claim
13 words
Thermoset resin which is the condensation product of the resin of claim 1.
Claim 15
Dependent Claim
15 words
Method of producing a thermoset resin which comprises condensing a resin according to claim 1.
Claim 16
Dependent Claim
33 words
Thermosetting resin composition according to claim 1, said copolymer being a copolymer of one or more of the group maleic acid, fumaric acid, anhydride and partial esters of maleic acid and fumaric acid.
Claim 17
Dependent Claim
22 words
Thermosetting resin composition according to claim 16, said copolymer being a copolymer of one or more of the group isobutylene and styrene.
Claim 18
Dependent Claim
49 words
Thermosetting resin according to claim 1, said polyamide being of a polyamide of the salt of adipic acid and hexamethylene diamine, adipic acid and 2,2,4-trimethylhexamethylenediamine, decanedicarboxylic acid and 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane and 2,2,4-trimethylhexamethylenediamine, decanedicarboxylic acid and 1-amino-3-aminomethyl-3,5,5-trimethyl cyclohexane, azelaic acid and 2,2,4-trimethylhexamethylenediamine, decanedicarboxylic acid and 2,4,4-trimethylhexamethylenediamine, or 2,2,4-trimethyladipic acid and 2,4,4-trimethylhexamethylenediamine.
Claim 19
Dependent Claim
22 words
Thermosetting resin according to claim 1, said polyamide being of a dicarboxylic acid and at least one of 2,4,4- and 2,2, 4-trimethylhexamethylenediamine.
Claim 20
Dependent Claim
15 words
Thermosetting resin according to claim 20, said dicarboxylic acid having six to 12 carbon atoms.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |