Patent US3864307A successfully refreshed from Google Patents.
US3864307A
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Natural and synthetic diene polymers stabilized with cresol derivative antioxidants
Assignee: Bayer AG
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Filing: 1973-07-10
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Granted: 1975-02-04
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Expires: 1993-07-10
Abstract
Abstract The invention disclosed herein relates to the stabilization of natural and synthetic diene polymers with cresol derivatives such a 2-tert. butyl-4-methyl-6-cyclopentyl-phenol, and 2-ter. butyl4-methyl-6-indanyl phenol.
Inventors
- 👤 Roland Nast
- 👤 Wolfgang Redetzky
- 👤 Gustav Sinn
- 👤 Theo Kempermann
- 👤 Joseph Witte
- 👤 Gunter Marwede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C07; C07C; C07C37/00; C07C37/11; C07C37/14; C07C37/16; C07C37/18; C07C2601/00; C07C2601/06; C07C2601/08; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08; C07C2602/36; C07C2602/42; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
28 words
A METHOD FOR PROTECTING NATURAL AND SYNTHETIC DIENE POLYMERS AGAINST DEGRADATION THROUGH OXIDATION WHICH COMPRISES INCORPORATING 0.01 TO 5 PARTS BY WEIGHT OF A COMPOUND OF THE FORMULA
Claim 2
Independent Claim
28 words
A METHOD FOR PROTECTING NATURAL AND SYNTHETIC DIENE POLYMERS AGAINST DEGRADATION THROUGH OXIDATION WHICH COMPRISES INCORPORATING 0.01 TO 5 PARTS BY WEIGHT OF A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
8 words
The process of claim 1 wherein R is
Claim 4
Dependent Claim
8 words
The process of claim 1 wherein R is
Claim 5
Dependent Claim
33 words
A composition comprising a natural or synthetic diene polymer having incorporated therein for each 100 parts by weight of said polymer 0.01 to 5 parts by weight of a compound of the formula
Claim 6
Dependent Claim
33 words
A composition comprising a natural or synthetic diene polymer having incorporated therein for each 100 parts by weight of said polymer 0.01 to 5 parts by weight of a compound of the formula
Claim 7
Dependent Claim
8 words
The composition of claim 4 wherein R is
Claim 8
Dependent Claim
8 words
The composition of claim 4 wherein R is
References Cited (Backward Citations)
US2537636A
Cited
US2839493A
Cited
US2953542A
Cited
US2952662A
Cited
US3036138A
Cited
US3180850A
Cited
US3357948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |