US3929804A
Expired / Lapsed
US
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4-Piperidine acetamide compounds
Assignee: Novartis Corp
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Filing: 1973-07-17
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Granted: 1975-12-30
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Expires: 1993-07-17
Abstract
Abstract New piperidine derivatives and in particular esters and amides of substituted (piperidinyl-4) acetic acid are used as stabilisers for polymers, especially for polyolefines.
Inventors
- 👤 Barry Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:52
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/34; C08; C08K; C08K5/00; C08K5/0008; C08K5/005; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435; C09; C09K; C09K15/00; C09K15/04; C09K15/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULAA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULAA
Claim 3
Dependent Claim
13 words
A compound according to claim 1 wherein R1 and R2 are each methyl.
Claim 4
Dependent Claim
13 words
A compound according to claim 1 wherein R3 and R5 are each hydrogen.
Claim 5
Dependent Claim
61 words
A compound according to claim 1 wherein R4 is a divalent straight- or branched aliphatic residue either saturated or unsaturated having from 2 to 20 carbon atoms, a divalent alicyclic residue having from 5 to 20 carbon atoms, a divalent aralkyl residue having from 8 to 20 carbon atoms or a divalent aryl residue having from 6 to 20 carbon atoms.
Claim 6
Dependent Claim
12 words
A compound according to claim 1 which is N,N''-bis-((2'',2'' ,6'' ,6'' -tetramethyl-piperidinyl-4)-acetyl)-hexane-1,6-diamine.
Claim 7
Dependent Claim
10 words
A compound according to claim 1 which is N,N''-bis-((2'',2'',6'', 6''-tetramethyl-piperidinyl-4'')-acetyl)-ethane-1,2-diamine.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |