Patent US3232902A successfully refreshed from Google Patents.
US3232902A
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Thermoplastic compositions on the basis of styrene, butadiene, acrylonitrile and dimethyl-itaconate copolymers
Assignee: L I R C LAB ITALIANI DI RICERC
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Filing: 1962-07-03
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Granted: 1966-02-01
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Expires: 1982-07-03
Abstract
No abstract record available.
Inventors
- 👤 Maroni Vito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:42
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08F; C08F236/00; C08F236/02; C08F236/04; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C08L33/00; C08L33/18; C08L33/20; C08L35/00; C08L35/06; C08L9/00; C08L9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A COMPOSITE THERMOPLASTIC COMPOSITION CONSISTING OF A LUBRICANT, AN ANTI-OXIDIZING AGENT AND A MAJOR PORTION OF A HOMOGENEOUS MIXTURE OF FIRST BUTADIENE-ACRYLONITRILE COPOLYMER INCLUDING 60% BY WEIGHT OF BUTADIENE, AND A SECOND TERNARY STYRENE-ACRYLONITRILE-DIMETHYLITACONATE COPOLYMER CONSISTING OF 65 TO 70% OF STYRENE, 20 TO 30% OF ACRYLONITRILE, AND ONLY 5 TO 10% OF DIMETHYL-ITACONATE, THE SAID MIXTURE CONSISTING OF 20% OF THE SAID FIRST COPOLYMER AND 80% OF THE SAID SECOND TENARY COPOLYMER, SAID LUBRICANT BEING A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ESTERS AND SALTS OF LONG CHAIN FATTY ACIDS IN AN AMOUNT NOT OVER 2.5% OF SAID MIXTURE, SAID ANTI-OXIDIZING COMPOUND CONSISTING OF A POLYSUBSTITUTED PHENOL IN AN AMOUNT NOT OVER 1.5% OF SAID FIRST COPOLYMER.
Claim 2
Dependent Claim
119 words
A COMPOSITE THERMOPLASTIC COMPOSITION CONSISTING OF A LUBRICANT, AN ANTI-OXIDIZING AGENT AND A MAJOR PORTION OF A HOMOGENEOUS MIXTURE OF FIRST BUTADIENE-ACRYLONITRILE COPOLYMER INCLUDING 60% BY WEIGHT OF BUTADIENE, AND A SECOND TERNARY STYRENE-ACRYLONITRILE-DIMETHYLITACONATE COPOLYMER CONSISTING OF 65 TO 70% OF STYRENE, 20 TO 30% OF ACRYLONITRILE, AND ONLY 5 TO 10% OF DIMETHYL-ITACONATE, THE SAID MIXTURE CONSISTING OF 20% OF THE SAID FIRST COPOLYMER AND 80% OF THE SAID SECOND TENARY COPOLYMER, SAID LUBRICANT BEING A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ESTERS AND SALTS OF LONG CHAIN FATTY ACIDS IN AN AMOUNT NOT OVER 2.5% OF SAID MIXTURE, SAID ANTI-OXIDIZING COMPOUND CONSISTING OF A POLYSUBSTITUTED PHENOL IN AN AMOUNT NOT OVER 1.5% OF SAID FIRST 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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |