US3218371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of (1) epsilon caprolactam, (2) rubbery butadiene-acrylonitrile copolymers, and (3) resinous styrene-acrylonitrile copolymers
Assignee: GE Chemicals Inc
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Filing: 1961-07-31
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Granted: 1965-11-16
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Grabowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:42
CPC Classifications
C; C08; C08L; C08L9/00; C08L9/02; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L77/00; C08L77/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A COMPOSITION COMPRISING A BLEND OF (A) FROM ABOUT 50 TO 20 PARTS BY WEIGHT OF POLYMERIZED EPISILON CAPROLACTAM AND (B) CORRSPONDINGLY FROM ABOUT 50 TO 80 PARTS BY WEIGHT OF A MIXTURE OF (1) A RUBBERY BUTADIENEACRYLONITRILE COPOLYMER AND (2) A RESINOUS STYRENE-ACRYLONITRILE COPOLYMER, SAID BLEND CHARACTERIZED IN THAT IT IS PREPARED BY BLENDING AT A TEMPERATURE EXCEEDING THE MELTING POINT OF SAID CAPROLACTAM.
Claim 2
Dependent Claim
65 words
A COMPOSITION COMPRISING A BLEND OF (A) FROM ABOUT 50 TO 20 PARTS BY WEIGHT OF POLYMERIZED EPISILON CAPROLACTAM AND (B) CORRSPONDINGLY FROM ABOUT 50 TO 80 PARTS BY WEIGHT OF A MIXTURE OF (1) A RUBBERY BUTADIENEACRYLONITRILE COPOLYMER AND (2) A RESINOUS STYRENE-ACRYLONITRILE COPOLYMER, SAID BLEND CHARACTERIZED IN THAT IT IS PREPARED BY BLENDING AT A TEMPERATURE EXCEEDING THE MELTING POINT OF SAID CAPROLACTAM.
References Cited (Backward Citations)
US2573273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |