US3673273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic of polyamide and epoxy resin
Assignee: Scholven Chemie AG
•
Filing: 1968-07-03
•
Granted: 1972-06-27
•
Expires: 1988-07-03
Abstract
Abstract Process of producing plastics by reacting polyamides with epoxy resins, characterized by the fact that the diamine used to form the polyamide employed consists of 20 - 100 percent of 1-amino-3aminomethyl-3,5,5-trimethyl cyclohexane and said polyamide constitutes 10 - 99.8 percent of the mixture. The products can be shaped articles.
Inventors
- 👤 Karl Schmitt
- 👤 Fritz Gude
- 👤 Siegfried Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:25
CPC Classifications
C; C09; C09D; C09D177/00; C09D177/02; C08; C08L; C08L63/00; C08L77/00; C08L77/02; C08L77/06; C09D177/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
31 words
Plastic according to claim 1, the polyamide having an average molecular weight of less than 3,000, and at least 70 percent of the terminal groups of the polyamide being amino groups.
Claim 2
Dependent Claim
25 words
Plastic according to claim 1, the polyamide containing diol residues, the diol residues being up to 15 percent of the diamine residues of the polyamide.
Claim 3
Dependent Claim
25 words
Plastic according to claim 2, the polyamide containing diol residues, the diol residues being up to 15 percent of the diamine residues of the polyamide.
Claim 4
Dependent Claim
12 words
PLastic according to claim 1, the epoxy compound being an epoxy resin.
Claim 5
Dependent Claim
8 words
Shaped article of plastic according to claim 1.
Claim 6
Dependent Claim
28 words
Plastic according to claim 1, the moleculer weight of the polyamide being 1,500-10,000, and at least 70 percent of the terminal groups of the polyamide being amino groups.
Claim 7
Dependent Claim
13 words
Plastic according to claim 1, the molecular weight of the polyamide being 1,500-10,000.
Claim 8
Dependent Claim
14 words
Plastic according to claim 7, the polyamide being a polyamide of a dicarboxylic acid.
References Cited (Backward Citations)
GB986190A
Cited
US3352913A
Cited
US3294759A
Cited
US3458481A
Cited
US3475367A
Cited
US3616963A
Cited
US3554944A
Cited
US3462337A
Cited
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 |