US4059563A
Expired / Lapsed
US
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Novel phenol antioxidants
Assignee: Zeon Corp
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Filing: 1976-09-13
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Granted: 1977-11-22
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Expires: 1996-09-13
Abstract
Abstract A phenol derivative of the general formula ##STR1## wherein R is a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, and X and Y, which may be identical or different, each represent a cyclopentyl or cyclohexyl group.
Inventors
- 👤 Kuniaki Goto
- 👤 Harumi Asai
- 👤 Tadao Natsuume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:51
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/06; C09K15/08; C07; C07C; C07C39/00; C07C39/12; C07C39/17; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C07C2601/00; C07C2601/06; C07C2601/08; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
In a process for inhibiting the deterioration of degradable polymeric and oily substances by adding an antidegradation agent to said degradable substance the improvement which comprises adding to said degradable substance from 0.01 to 5 parts by weight per 100 parts by weight of the degradable substance of at least one p-cresol compound of the formula: ##STR4## wherein X and Y each represent a cyclopentyl group.
Claim 2
Dependent Claim
66 words
In a process for inhibiting the deterioration of degradable polymeric and oily substances by adding an antidegradation agent to said degradable substance the improvement which comprises adding to said degradable substance from 0.01 to 5 parts by weight per 100 parts by weight of the degradable substance of at least one p-cresol compound of the formula: ##STR4## wherein X and Y each represent a cyclopentyl group.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein said compound is 2,6-dicyclopentyl-p-cresol.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein said compound is 2,5-dicyclopentyl-p-cresol.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein said compound is 3,5-diclyclopentyl-p-cresol.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein said degradable substance is natural or synthetic rubber.
Claim 7
Dependent Claim
20 words
The process of claim 5 wherein said degradable substance is a synthetic rubber which comprises styrene-butadiene rubber or acrylonitrile-butadiene rubber.
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) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |