US3213158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stable compositions comprising polyoxymethylene and partially cured epoxy resin
Assignee: Teijin Ltd
•
Filing: 1961-03-28
•
Granted: 1965-10-19
•
Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 Sakakibara Seizaburo
- 👤 Aoki Hiroshi
- 👤 Kuwabara Michichika
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:31
CPC Classifications
C; C08; C08L; C08L59/00; C08L59/02; C08G; C08G59/00; C08G59/02; C08G59/10; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A POLYMER BLEND WHICH COMPRISES AT LEAST ONE HIGH MOLECULAR WEIGHT SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF POLYOXYMETHYLENE, ETHERIFIED POLYOXYMETHYLENE AND ESTERIFIED POLYOXYMETHYLENE AND AN EPOXY RESIN OBTAINED FROM REACTING AN EPIHALOHYDRIN WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BIS-(4-HYDROXYPHENYL)-DIMETHYLMETHANE, DIHYDROXY DIPHENYL, BIS-(HYDROXYPHENY)-METHANE, BIS-(HYDROXPHENYL)-ETHANE AND P-BIS-(HYDROXYPHENYL)-BENZENE IN AN AMOUNT OF 0.5-20% BY WEIGHT BASED ON THE HIGH MOLECULAR WEIGHT SUBSTANCE, SAID EPOXY RESIN HAVING BEEN PARTIALLY CURED WITH AN AMINO GROUP COMPOUND WHICH CONTAINS AT LEAST TWO ACTIVE AMINO HYDROGEN ATOMS IN AN AMOUNT SUFFICIENT TO REACT WITH 280% OF THE EPOXY GROUPS CONTAINED IN THE UNCURED EPOXY RESIN.
Claim 2
Dependent Claim
102 words
A POLYMER BLEND WHICH COMPRISES AT LEAST ONE HIGH MOLECULAR WEIGHT SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF POLYOXYMETHYLENE, ETHERIFIED POLYOXYMETHYLENE AND ESTERIFIED POLYOXYMETHYLENE AND AN EPOXY RESIN OBTAINED FROM REACTING AN EPIHALOHYDRIN WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BIS-(4-HYDROXYPHENYL)-DIMETHYLMETHANE, DIHYDROXY DIPHENYL, BIS-(HYDROXYPHENY)-METHANE, BIS-(HYDROXPHENYL)-ETHANE AND P-BIS-(HYDROXYPHENYL)-BENZENE IN AN AMOUNT OF 0.5-20% BY WEIGHT BASED ON THE HIGH MOLECULAR WEIGHT SUBSTANCE, SAID EPOXY RESIN HAVING BEEN PARTIALLY CURED WITH AN AMINO GROUP COMPOUND WHICH CONTAINS AT LEAST TWO ACTIVE AMINO HYDROGEN ATOMS IN AN AMOUNT SUFFICIENT TO REACT WITH 280% OF THE EPOXY GROUPS CONTAINED IN THE UNCURED EPOXY RESIN.
References Cited (Backward Citations)
US2830038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |