US4014887A
Expired / Lapsed
US
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Substituted piperidin-4-ols
Assignee: Novartis Corp
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Filing: 1973-10-19
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Granted: 1977-03-29
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Expires: 1993-10-19
Abstract
Abstract Disclosed are stabilized compositions comprising a polymer, especially polyolefines, and a minor proportion of a 1,2,2,6,6-pentasubstituted piperidin-4-ol. The new compositions possess good light stability.
Inventors
- 👤 Donald Richard Randell
- 👤 Brian Holt
- 👤 Alan Geoffrey Virgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:36
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435; C09; C09K; C09K15/00; C09K15/04; C09K15/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A compound of the formula ##SPC14## wherein R 1 and R 2 are the same or different and each is a straight- or branched alkyl residue having from 1 to 12 carbon atoms, or R 1 and R 2 , together with the carbon atom to which they are attached, form a cycloalkyl residue having from 5 to 12 carbon atoms, or the group: ##SPC15## wherein R 1 and R 2 are as defined above and Y' is a straight- or branched alkyl having from 5 to 20 carbon atoms, an alkenyl or alkynyl having from 3 to 20 carbon atoms, an aralkyl selected from benzyl, α-methylbenzyl, p-methyl- α-methylbenzyl and α-naphthylmethyl or the group --CH 2 X' wherein X' is the group ##EQU14## wherein R 3 ' is hydrogen or a methyl residue, or X is the group ##EQU15## wherein R 4 is alkyl residue having from 1 to 20 carbon atoms.
Claim 2
Dependent Claim
152 words
A compound of the formula ##SPC14## wherein R 1 and R 2 are the same or different and each is a straight- or branched alkyl residue having from 1 to 12 carbon atoms, or R 1 and R 2 , together with the carbon atom to which they are attached, form a cycloalkyl residue having from 5 to 12 carbon atoms, or the group: ##SPC15## wherein R 1 and R 2 are as defined above and Y' is a straight- or branched alkyl having from 5 to 20 carbon atoms, an alkenyl or alkynyl having from 3 to 20 carbon atoms, an aralkyl selected from benzyl, α-methylbenzyl, p-methyl- α-methylbenzyl and α-naphthylmethyl or the group --CH 2 X' wherein X' is the group ##EQU14## wherein R 3 ' is hydrogen or a methyl residue, or X is the group ##EQU15## wherein R 4 is alkyl residue having from 1 to 20 carbon atoms.
Claim 3
Dependent Claim
15 words
A compound according to claim 1 wherein R 1 and R 2 are each methyl.
Claim 4
Dependent Claim
49 words
A compound according to claim 1 wherein Y' is an alkyl having from 5 to 20 carbon atoms, an alkenyl or alkynyl having 3 or 4 carbon atoms, an aralkyl having from 7 to 11 carbon atoms selected from benzyl, α-methylbenzyl, p-methyl- α-methylbenzyl and α-naphthylmethyl, a hydroxyethyl or 2-hydroxypropyl.
Claim 5
Dependent Claim
9 words
A compound according to claim 1 which is 1-n-dodecyl-2,2,6,6-tetramethylpiperidin-4-ol.
Claim 6
Dependent Claim
9 words
A compound according to claim 1 which is 1-benzyl-2,2,6,6-tetramethylpiperidin-4-ol.
Claim 7
Dependent Claim
9 words
A compound according to claim 1 which is 1-allyl-2,2,6,6-tetramethylpiperidin-4-ol.
Claim 8
Dependent Claim
9 words
A compound according to claim 1 which is 1-(2-hydroxypropyl)-2,2,6,6-tetramethylpiperidin-4-ol.
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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |