US4038327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3,5-disubstituted-4-hydroxybenzyl derivative
Assignee: Qo Chemicals Inc
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Filing: 1972-05-26
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Granted: 1977-07-26
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Expires: 1992-05-26
Abstract
Abstract A new series of compounds having the following formula is disclosed: ##STR1## wherein R 1 and R 2 are independently aralkyl or alkyl with the proviso that the aralkyl group contains no branching on the carbon alpha to the phenylene group and the alkyl group contains no branching on the carbon alpha to the phenylene group but has at least one branch on the carbon beta to the phenylene group; R 3 is hydroxy, --OR 4 or ##STR2## R 4 , R 5 , and R 6 are alkyl, cycloalkyl, aralkyl, aryl, or alkaryl and R 6 may additionally be hydrogen; said compounds are useful as antioxidants for polyolefins.
Inventors
- 👤 Gordon D. Brindell
- 👤 Rudy F. Macander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:49
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/20; C07C39/00; C07C39/12; C08; C08K; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
The composition which is 3,5-dibenzyl-4-hydroxybenzyl alcohol.
Claim 2
Dependent Claim
6 words
The composition which is 3,5-dibenzyl-4-hydroxybenzyl alcohol.
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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |