US4021468A
Expired / Lapsed
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Thiaalkyl phenols
Assignee: Novartis Corp
•
Filing: 1975-06-23
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Granted: 1977-05-03
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Expires: 1995-06-23
Abstract
Abstract New thiaalkylphenols are used as stabilizers for organic material. They are prepared by reacting corresponding alkenephenols with mercaptans.
Inventors
- 👤 Hanns Lind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/375; C07; C07C; C07C317/00; C07C317/16; C07C317/18; C07C317/44; C07C323/00; C07C323/10; C07C323/11; C07C323/16; C07C323/50; C07C323/51; C07C323/52
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
A compound of the formula ##STR43## Wherein R 1 and R 2 are tert-butyl, R 3 is hydrogen or methyl, X is alkylene with 3 to 18 carbon atoms, with the phenol radical and the sulphur atom being separated by 2 or 3 carbon atoms and Y is alkoxy carbonylalkyl with 3 to 21 carbon atoms or carboxyalkyl with 2 or 3 carbon atoms.
Claim 2
Dependent Claim
64 words
A compound of the formula ##STR43## Wherein R 1 and R 2 are tert-butyl, R 3 is hydrogen or methyl, X is alkylene with 3 to 18 carbon atoms, with the phenol radical and the sulphur atom being separated by 2 or 3 carbon atoms and Y is alkoxy carbonylalkyl with 3 to 21 carbon atoms or carboxyalkyl with 2 or 3 carbon atoms.
Claim 3
Dependent Claim
16 words
A compound according to claim 1, wherein X is alkylene with 3 to 5 carbon atoms.
Claim 4
Dependent Claim
18 words
A compound according to claim 1, wherein R 3 is hydrogen, X is a group selected from ##STR44##
Claim 5
Dependent Claim
10 words
The compound according to claim 1, of the formula ##STR45##
Claim 6
Dependent Claim
10 words
The compound according to claim 1, of the formula ##STR46##
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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |