US3959291A
Expired / Lapsed
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Piperidine derivatives
Assignee: Novartis Corp
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Filing: 1974-02-01
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Granted: 1976-05-25
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Expires: 1994-02-01
Abstract
Abstract A composition comprising an organic material and, as stabiliser, a compound having the formula ##SPC1## And salts thereof, wherein R 1 and R 2 are the same or different and each is an alkyl residue having from 1 to 12 carbon atoms or R 1 and R 2 , together with the carbon atom to which they are bound, form a cycloalkyl residue having from 5 to 12 carbon atoms in the ring, Y is O, hydrogen, a straight or branched alkyl residue having from 1 to 20 carbon atoms, an alkenyl or alkynyl residue having from 3 to 12 carbon atoms, an aralkyl residue having from 7 to 12 carbon atoms or a group having the formula ##EQU1## wherein R is hydrogen, or a methyl or phenyl residue and R 3 is hydrogen or a straight- or branched chain alkyl residue having from 1 to 12 carbon atoms.
Inventors
- 👤 Barry Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:07
CPC Classifications
C; C07; C07D; C07D221/00; C07D221/02; C07D221/20; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/20; C07D211/22; C07D211/92; C07D211/94; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
135 words
A compound having the formula ##SPC12## wherein R 1 ' and R 2 ' are the same or different and each is an alkyl residue having from 1 to 12 carbon atoms, or R 1 ', and R 2 ' together with the carbon atoms to which they are bound, form a cycloalkyl residue having from 5 to 12 carbon atoms in the ring, Y 1 is a straight- or branched alkyl residue having from 1 to 20 carbon atoms, or alkenyl or alkynyl residue having from 3 to 12 carbon atoms, or an aralkyl residue having from 7 to 12 carbon atoms and being selected from benzyl, β-methylbenzyl, p-methylbenzyl or a, p-dimethylbenzyl, ##EQU12## and R 3 ' is hydrogen or a straight- or branched chain alkyl residue having from 1 to 12 carbon atoms.
Claim 2
Dependent Claim
135 words
A compound having the formula ##SPC12## wherein R 1 ' and R 2 ' are the same or different and each is an alkyl residue having from 1 to 12 carbon atoms, or R 1 ', and R 2 ' together with the carbon atoms to which they are bound, form a cycloalkyl residue having from 5 to 12 carbon atoms in the ring, Y 1 is a straight- or branched alkyl residue having from 1 to 20 carbon atoms, or alkenyl or alkynyl residue having from 3 to 12 carbon atoms, or an aralkyl residue having from 7 to 12 carbon atoms and being selected from benzyl, β-methylbenzyl, p-methylbenzyl or a, p-dimethylbenzyl, ##EQU12## and R 3 ' is hydrogen or a straight- or branched chain alkyl residue having from 1 to 12 carbon atoms.
Claim 3
Dependent Claim
33 words
A compound as claimed in claim 1 wherein R 1 ' and R 2 ' are each a methyl residue, Y' is a methyl residue or 0 and R 3 ' is hydrogen.
Claim 4
Dependent Claim
88 words
A compound having the formula ##SPC13## wherein R 1 ' and R 2 ' are the same or different and each is an alkyl residue having from 1 to 12 carbon atoms, or R 1 ', and R 2 ' together with the carbon atom to which they are bound, form a cycloalkyl residue having from 5 to 12 carbon atoms in the ring, Y' is 0 and R 3 ' is hydrogen or a straight- or branched chain alkyl residue having from 1 to 12 carbon atoms.
Claim 5
Dependent Claim
88 words
A compound having the formula ##SPC13## wherein R 1 ' and R 2 ' are the same or different and each is an alkyl residue having from 1 to 12 carbon atoms, or R 1 ', and R 2 ' together with the carbon atom to which they are bound, form a cycloalkyl residue having from 5 to 12 carbon atoms in the ring, Y' is 0 and R 3 ' is hydrogen or a straight- or branched chain alkyl residue having from 1 to 12 carbon atoms.
Claim 6
Dependent Claim
103 words
A compound having the formula ##SPC14## wherein R 1 ' and R 2 ' are the same or different and each is an alkyl residue having from 1 to 12 carbon atoms, or R 1 ', and R 2 ' together with the carbon atom to which they are bound, form a cycloalkyl residue having from 5 to 12 carbon atoms in the ring, Y' is a group having the formula ##EQU13## wherein R' is hydrogen or a methyl or phenyl residue and R 3 ' is hydrogen or a straight- or branched chain alkyl residue having from 1 to 12 carbon atoms.
Claim 7
Dependent Claim
103 words
A compound having the formula ##SPC14## wherein R 1 ' and R 2 ' are the same or different and each is an alkyl residue having from 1 to 12 carbon atoms, or R 1 ', and R 2 ' together with the carbon atom to which they are bound, form a cycloalkyl residue having from 5 to 12 carbon atoms in the ring, Y' is a group having the formula ##EQU13## wherein R' is hydrogen or a methyl or phenyl residue and R 3 ' is hydrogen or a straight- or branched chain alkyl residue having from 1 to 12 carbon atoms.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |