Patent US4049647A successfully refreshed from Google Patents.
US4049647A
Expired / Lapsed
US
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Bis piperidyl carboxylates
Assignee: Novartis Corp
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Filing: 1975-05-14
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Granted: 1977-09-20
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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-positon a residue.
Inventors
- 👤 Brian Holt
- 👤 Donald Richard Randell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:39
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
148 words
A compound having the formula: ##STR155## wherein R I and R II are the same or different and each is a straight or branched alkyl group, having from 1 to 4 carbon atoms, or R I or R II , together with the carbon atom to which they are attached form a cycloalkyl group having from 5 to 12 carbon atoms; Y is an alkyl group, having from 5 to 20 carbon atoms, alkenyl having from 7 to 9 carbon atoms, n is 2, R is cycloalkylene having from 1 to 20 carbon atoms, cycloalkylene having from 5 to 12 carbon atoms, arylene, having from 6 to 20 carbon atoms, vinylene propenylene, p-xylylene, the group -CH 2 CH 2 SCH 2 CH 2 - or R is absent; and a salt thereof selected from phosphate, carbonate, sulfate, chloride, acetate, stearate, maleate, citrate, tertrate, oxalate, benzoate and substituted carbamate.
Claim 2
Dependent Claim
148 words
A compound having the formula: ##STR155## wherein R I and R II are the same or different and each is a straight or branched alkyl group, having from 1 to 4 carbon atoms, or R I or R II , together with the carbon atom to which they are attached form a cycloalkyl group having from 5 to 12 carbon atoms; Y is an alkyl group, having from 5 to 20 carbon atoms, alkenyl having from 7 to 9 carbon atoms, n is 2, R is cycloalkylene having from 1 to 20 carbon atoms, cycloalkylene having from 5 to 12 carbon atoms, arylene, having from 6 to 20 carbon atoms, vinylene propenylene, p-xylylene, the group -CH 2 CH 2 SCH 2 CH 2 - or R is absent; and a salt thereof selected from phosphate, carbonate, sulfate, chloride, acetate, stearate, maleate, citrate, tertrate, oxalate, benzoate and substituted carbamate.
Claim 3
Dependent Claim
58 words
A compound as claimed in claim 1 wherein n is 2 and R is a methylene, 1,2-ethylene, 1,4-butylene, 1,8n-octylene, 2,2,4-trimethyl-1, 4-butylene, 1,10-n-decylene, 1,2-eicosylene, vinylene, propenylene, 1,2-, 1,3- or 1,4-cyclohexylene, cyclohexyl-3-ene, 1,2-, 1,3- or 1,4-phenylene, p-xylylene, 1,4- or 1,5-naphthylene, diphenylene or diphenylmethylene residue or the group --CH 2 CH 2 SCH 2 CH 2 - or R is absent.
Claim 4
Dependent Claim
13 words
A compound of claim 2 wherein R I and R II are methyl.
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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |