US3117945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising styrene homopolymer and styrene-ethylene copolymer and method therefor
Assignee: Union Carbide Corp
•
Filing: 1960-01-04
•
Granted: 1964-01-14
•
Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 William F Gorham
- 👤 Alford G Farnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:51
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L25/08; C08L23/00; C08L23/02; C08L23/04; C08L23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A READILY PROCESSABLE THERMOPLASTIC COMPOSITION COMPRISING PER 100 PARTS BY WEIGHT FROM 10 TO 60 PARTS BY WEIGHT OF SYTRENE HOMOPOLYMER WITH BA MOLECULAR WEIGHT OF FROM 40,000 TO 150,000 BLENDED WITH FROM 90 TO 40 PARTS BY WEIGHT OF A FRACTIONABLE STYRENE-ETHYLENE COPOLYMER HAVING A 10 P MELT FLOW AT 190*C. OF FROM 1 TO 10 DECIGRAMS PER MINUTE AND CONTAINING AT LEAST 20% COPOLYMERIZED STYRENE, ONE FRACTION OF SAID COPOLYMER BEING INSOLUBLE IN TOLUENE AND COMPRISING FROM 50 TO 75% BY WEIGHT OF SAID COPOLYMER.
Claim 2
Dependent Claim
87 words
A READILY PROCESSABLE THERMOPLASTIC COMPOSITION COMPRISING PER 100 PARTS BY WEIGHT FROM 10 TO 60 PARTS BY WEIGHT OF SYTRENE HOMOPOLYMER WITH BA MOLECULAR WEIGHT OF FROM 40,000 TO 150,000 BLENDED WITH FROM 90 TO 40 PARTS BY WEIGHT OF A FRACTIONABLE STYRENE-ETHYLENE COPOLYMER HAVING A 10 P MELT FLOW AT 190*C. OF FROM 1 TO 10 DECIGRAMS PER MINUTE AND CONTAINING AT LEAST 20% COPOLYMERIZED STYRENE, ONE FRACTION OF SAID COPOLYMER BEING INSOLUBLE IN TOLUENE AND COMPRISING FROM 50 TO 75% BY WEIGHT OF SAID COPOLYMER.
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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |