US3634543A
Expired / Lapsed
US
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Nucleated graft polymers of polycaprolactam on carboxy containing copolymeric backbone
Assignee: Honeywell International Inc
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Filing: 1968-08-12
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Granted: 1972-01-11
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Expires: 1988-08-12
Abstract
Abstract NUCLEATED COMPOSITIONS OF POLUCAPROLACTAM HAVING IMPROVED ULTIMATE ELONGATION MAY BE PREPARED BY POLYMERIZING CAPROLACTAM IN THE PRESENCE OF ABOUT 0.1 TO 1.5% BY WEIGHT OF A COPOLYMER OF AN OLEFIN AND AN UNSATURATED CARBOXYLIC ACID, AND ADDING THERETO A NUCLEATING AGENT. THE RESULTING COMPOSITION IS A GRAFT POLYMER WHEREIN THE COPOLYMER FORMS THE BACKBONE CHAIN AND POLYCARPROLACTAM FORMS THE SIDE CHAINS. EXCEPT FOR ULTIMATE ELONGATION, THE PHYSICAL PROPERTIES OF THE NUCLEATED COMPOSITION ARE SIMILAR TO THOSE OF NUCLEATED POLYCAPROLACTAM HOMOPOLYMER. THE ULTIMATE ELONGATION OF THE COMPOSITION IS MUCH GREATER THAN THAT OF NUCLEATED POLYCAPROLACTAM HOMOPOLYMER.
Inventors
- 👤 Norman Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:40
CPC Classifications
C; C08; C08G; C08G69/00; C08F; C08F8/00; C08F8/30; C08F2800/00; C08F2800/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |