US3337648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymer comprising the reaction product of a carboxy-terminated conjugated diene polymer with a vinyl aromatic hydrocarbon and a lactam
Assignee: Foster Grant Co Inc
•
Filing: 1966-01-27
•
Granted: 1967-08-22
•
Expires: 1986-01-27
Abstract
No abstract record available.
Inventors
- 👤 Aelion Rene
- 👤 Frederick R Eirich
- 👤 Williard M Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:06
CPC Classifications
C; C08; C08G; C08G69/00; C08F; C08F279/00; C08F279/02; C08F283/00; C08F283/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A GRAFT COPOLYMER COMPRISING A CARBOXY TERMINATED POLYMER HAVING REPEATING UNITS RESULTING FROM THE POLYMERIZATION OF A C4 TO C6 CONJUGATED DIENE HAVING GRAFTED THEREON A PLURALITY OF POLYMER CHAINS OF A MONOVINYL AROMATIC HYDROCARBON AND AT LEAST ONE POLYMER CHAIN OF A LACTAM HAVING AT LEAT SIX ATOMS IN THE RING, WHEREIN THE CARBOXY TERMINATED POLYMER HAS A MOLECULAR WEIGHT OF 500 TO 50,000, THE MOLAR RATIO OF MONOVINYL AROMATIC HYDROCARBON TO CARBOXY TERMINATED POLYMER FALLS IN THE RANGE OF 500:11 TO 10,000:1, AND THE GRAFT COPOLYMER CONTAINS 5 TO 50 PERCENT BY WEIGHT OF MONOVINYL AROMATIC HYDROCARBON BASED ON THE TOTAL WEIGHT OF LACTAM INCORPORATED IN THE GRAFT COPOLYMER.
Claim 2
Dependent Claim
111 words
A GRAFT COPOLYMER COMPRISING A CARBOXY TERMINATED POLYMER HAVING REPEATING UNITS RESULTING FROM THE POLYMERIZATION OF A C4 TO C6 CONJUGATED DIENE HAVING GRAFTED THEREON A PLURALITY OF POLYMER CHAINS OF A MONOVINYL AROMATIC HYDROCARBON AND AT LEAST ONE POLYMER CHAIN OF A LACTAM HAVING AT LEAT SIX ATOMS IN THE RING, WHEREIN THE CARBOXY TERMINATED POLYMER HAS A MOLECULAR WEIGHT OF 500 TO 50,000, THE MOLAR RATIO OF MONOVINYL AROMATIC HYDROCARBON TO CARBOXY TERMINATED POLYMER FALLS IN THE RANGE OF 500:11 TO 10,000:1, AND THE GRAFT COPOLYMER CONTAINS 5 TO 50 PERCENT BY WEIGHT OF MONOVINYL AROMATIC HYDROCARBON BASED ON THE TOTAL WEIGHT OF LACTAM INCORPORATED IN THE GRAFT COPOLYMER.
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |