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Patent US3230277A successfully refreshed from Google Patents.
US3230277A
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Cis-polybutadiene modified copolymers of alpha-methylstyrene and methyl methacrylate
Assignee: Individual
•
Filing: 1960-06-14
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Granted: 1966-01-18
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Expires: 1980-06-14
Abstract
No abstract record available.
Inventors
- 👤 Charles H Schramm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:17
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F279/00; C08F279/02; C08F279/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A COMPOSITION OF MATTER COMPRISING A GRAFT INTERPOLYMER OF METHYL METHACRYLATE, ALPHA-METHYLSTYRENE AND AN ELASTOMER, SAID GRAFT INTERPOLYMER BEING THE POLYMERIZATION PRODUCT OF 10 TO 55 PARTS BY WEIGHT OF ALPHA-METHYLSTYRENE, 90 TO 45 PARTS BY WEIGHT OF METHYL METHACRYLATE AND 1 TO 20 PARTS BY WEIGHT OF A CIS-POLYBUTADIENE ELASTOMER IN WHICH AT LEAST 75 PERCENT OF THE DOUBLE BONDS ARE IN THE CIS CONFIGURATION.
Claim 2
Dependent Claim
66 words
A COMPOSITION OF MATTER COMPRISING A GRAFT INTERPOLYMER OF METHYL METHACRYLATE, ALPHA-METHYLSTYRENE AND AN ELASTOMER, SAID GRAFT INTERPOLYMER BEING THE POLYMERIZATION PRODUCT OF 10 TO 55 PARTS BY WEIGHT OF ALPHA-METHYLSTYRENE, 90 TO 45 PARTS BY WEIGHT OF METHYL METHACRYLATE AND 1 TO 20 PARTS BY WEIGHT OF A CIS-POLYBUTADIENE ELASTOMER IN WHICH AT LEAST 75 PERCENT OF THE DOUBLE BONDS ARE IN THE CIS CONFIGURATION.
References Cited (Backward Citations)
BE564366A
Cited
US2762790A
Cited
US2802808A
Cited
FR1205234A
Cited
US2979488A
Cited
US3029222A
Cited
US2989420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |