US4021432A
Expired / Lapsed
US
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Piperidine derivatives
Assignee: Novartis Corp
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Filing: 1975-05-14
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Granted: 1977-05-03
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Expires: 1995-05-14
Abstract
Abstract New 1- and 4-substituted piperidines are stabilizers for organic material. They are produced by reacting corresponding 1-substituted piperidinols with acid chlorides or corresponding 4-substituted piperidines with a compound introducing into the 1-position a residue.
Inventors
- 👤 Brian Holt
- 👤 Donald Richard Randell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
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
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A compound having the formula: ##STR156## wherein R III and R IV are the same or different and each is a straight or branched alkyl group having from 1 to 12 carbon atoms or R III and R IV together with the carbon atom to which they are each attached from a cycloalkyl group having from 5 to 12 carbon atoms, Y is a straight- or branched alkyl group having from 1 to 12 carbon atoms, an alkenyl group having from 3 to 12 carbon atoms or an aralkyl group having from 7 to 12 carbon atoms and R 12 is hydrogen or a saturated or unsaturated hydrocarbyl group containing up to 20 carbon atoms optionally substituted, Y halogen or alkoxy having from 1 to 4 carbon atoms and q is 2; and a salt thereof selected from a phosphate, carbonate, sulfate, chloride, acetate, stearate, maleate, citrate, tertrate, oxolate, benzoate and substituted carbamate.
Claim 2
Dependent Claim
153 words
A compound having the formula: ##STR156## wherein R III and R IV are the same or different and each is a straight or branched alkyl group having from 1 to 12 carbon atoms or R III and R IV together with the carbon atom to which they are each attached from a cycloalkyl group having from 5 to 12 carbon atoms, Y is a straight- or branched alkyl group having from 1 to 12 carbon atoms, an alkenyl group having from 3 to 12 carbon atoms or an aralkyl group having from 7 to 12 carbon atoms and R 12 is hydrogen or a saturated or unsaturated hydrocarbyl group containing up to 20 carbon atoms optionally substituted, Y halogen or alkoxy having from 1 to 4 carbon atoms and q is 2; and a salt thereof selected from a phosphate, carbonate, sulfate, chloride, acetate, stearate, maleate, citrate, tertrate, oxolate, benzoate and substituted carbamate.
Claim 3
Dependent Claim
42 words
A compound as claimed in claim 1 wherein R 12 is an aliphatic group having from 1 to 20 carbon atoms, an alicyclic group having from 5 to 15 carbon atoms or an aromatic group having from 6 to 15 carbon atoms.
Claim 4
Dependent Claim
23 words
A compound as claimed in claim 2 wherein R 12 is a 1,2-ethylene, 1,6-hexylene, 2,4,4-trimethyl-1,6-hexylene, 1,3- or 1,4-phenylene, 2,4-tolylene, 1,5-naphthylene or 4,4'-diphenylmethylene group.
Claim 5
Dependent Claim
12 words
A compound as claimed in claim 1 wherein Y 1 is methyl.
Claim 6
Dependent Claim
19 words
A compound as claimed in claim 1 in the form of its salt of an inorganic or organic acid.
Claim 7
Dependent Claim
18 words
A compound of formula IV as defined in claim 1 wherein R III and R IV are methyl.
Claim 8
Dependent Claim
10 words
A compound according to claim 1 which is 1,6-bis-(4'-carbamoyloxy-1', 2',6',6'-pentamethylpiperidine)-hexane.
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 |