US3073798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymers and polymer blends containing same
Assignee: Monsanto Chemicals Ltd
•
Filing: 1959-11-09
•
Granted: 1963-01-15
•
Expires: 1979-11-09
Abstract
No abstract record available.
Inventors
- 👤 Baer Massimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:42
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08F; C08F16/00; C08F16/12; C08F16/14; C08F16/24; C08F279/00; C08F279/02; C08F279/04; C08L51/00; C08L51/04; C08L55/00; C08L55/02; Y; Y10; Y10S; Y10S525/00; Y10S525/942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A COMPOSITION COMPRISING AS ITS SOLE POLYMERIC COMPONENTS AN INTIMATE PHYSICAL ADMIXTURE OF (1) A STYRENEACRYLONITRILE SUPERSTRATE/DIENE RUBBER SUBSTRATE GRAFT COPOLYMER AND (2) A SEPARATELY-PREPARED COPOLYMER OF 6090% BY WEIGHT OF STYRENE AND CORRESPONDINGLY, 40-10% BY WEIGHT OF ACRYLONITRILE IN SUCH PROPORTION THAT THE DIENE RUBBER SUBSTRATE OF THE GRAFT COPOLYMER CONSTITUTES 5-40% BY WEIGHT OF THE ADMIXTURE; SAID GRAFT COPOLYMER BEING THE PRODUCT OBTAINED BY POLYMERIZING 10-900 PARTS BY WEIGHT OF A MIXTURE CONSISTING OF 60-90% BY WEIGHT OF STYRENE AND 40-10% BY WEIGHT OF ACRYLONITRILE IN AN AQUEOUS DISPERSION CONTAINING 100 PARTS BY WEIGHT OF A RUBBERY INTERPOLYMER CONSISTING OF 38.5-75% BY WEIGHT OF COMBINED BUTADIENE, 25-60% BY WEIGHT OF COMBINED STYRENE, AND UP TO 1.5% BY WEIGHT OF A COMBINED CROSSLINKING MONOMER CONTAINING A PLURALITY OF NON-CONJUGATED, NON-CUMULATIVE TERMINAL ETHYLENIC GROUPS; SAID RUBBERY INTERPOLYMER HAVING A SWELLING INXEX NOT GREATER THAN ABOUT 25 IN BENZENE.
Claim 2
Dependent Claim
148 words
A COMPOSITION COMPRISING AS ITS SOLE POLYMERIC COMPONENTS AN INTIMATE PHYSICAL ADMIXTURE OF (1) A STYRENEACRYLONITRILE SUPERSTRATE/DIENE RUBBER SUBSTRATE GRAFT COPOLYMER AND (2) A SEPARATELY-PREPARED COPOLYMER OF 6090% BY WEIGHT OF STYRENE AND CORRESPONDINGLY, 40-10% BY WEIGHT OF ACRYLONITRILE IN SUCH PROPORTION THAT THE DIENE RUBBER SUBSTRATE OF THE GRAFT COPOLYMER CONSTITUTES 5-40% BY WEIGHT OF THE ADMIXTURE; SAID GRAFT COPOLYMER BEING THE PRODUCT OBTAINED BY POLYMERIZING 10-900 PARTS BY WEIGHT OF A MIXTURE CONSISTING OF 60-90% BY WEIGHT OF STYRENE AND 40-10% BY WEIGHT OF ACRYLONITRILE IN AN AQUEOUS DISPERSION CONTAINING 100 PARTS BY WEIGHT OF A RUBBERY INTERPOLYMER CONSISTING OF 38.5-75% BY WEIGHT OF COMBINED BUTADIENE, 25-60% BY WEIGHT OF COMBINED STYRENE, AND UP TO 1.5% BY WEIGHT OF A COMBINED CROSSLINKING MONOMER CONTAINING A PLURALITY OF NON-CONJUGATED, NON-CUMULATIVE TERMINAL ETHYLENIC GROUPS; SAID RUBBERY INTERPOLYMER HAVING A SWELLING INXEX NOT GREATER THAN ABOUT 25 IN BENZENE.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |