US4128608A
Expired / Lapsed
US
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2,2,6,6-Tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymers
Assignee: Adeka Corp
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Filing: 1977-12-08
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Granted: 1978-12-05
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Expires: 1997-12-08
Abstract
Abstract 2,2,6,6-TETRAMETHYL-4-PIPERIDYL SPIRO ALIPHATIC ETHERS ARE PROVIDED, USEFUL AS STABILIZERS FOR ORGANIC POLYMERIC MATERIALS, AND HAVING THE GENERAL FORMULA: <IMAGE> wherein:
Inventors
- 👤 Motonobu Minagawa
- 👤 Naohiro Kubota
- 👤 Toshihiro Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:39
CPC Classifications
C; C07; C07D; C07D491/00; C07D491/02; C07D491/10; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
52 words
A 2,2,6,6-tetramethyl-4-piperidyl spiro aliphatic ether having the general formula: ##STR64## wherein: R 1 is selected from the group consisting of hydrogen, lower alkyl and lower hydroxyalkyl having one or two carbon atoms; ##STR65## R 3 is selected from the group consisting of hydrogen and O.sup.. ; and n is 0 or 1.
Claim 2
Dependent Claim
52 words
A 2,2,6,6-tetramethyl-4-piperidyl spiro aliphatic ether having the general formula: ##STR64## wherein: R 1 is selected from the group consisting of hydrogen, lower alkyl and lower hydroxyalkyl having one or two carbon atoms; ##STR65## R 3 is selected from the group consisting of hydrogen and O.sup.. ; and n is 0 or 1.
Claim 3
Dependent Claim
11 words
A compound according to claim 1 in which n is one.
Claim 4
Dependent Claim
11 words
A compound according to claim 1 in which n is zero.
Claim 5
Dependent Claim
12 words
A compound according to claim 1 in which R 1 is hydrogen.
Claim 6
Dependent Claim
19 words
A compound according to claim 1 in which R 1 is lower alkyl having one or two carbon atoms.
Claim 7
Dependent Claim
19 words
A compound according to claim 1 in which R 1 is lower hydroxyalkyl having one or two carbon atoms.
Claim 8
Dependent Claim
12 words
A compound according to claim 1 in which R 3 is hydrogen.
Claim 9
Dependent Claim
12 words
A compound according to claim 1 in which R 3 is O.sup...
Claim 10
Dependent Claim
10 words
A compound according to claim 1 having the formula: ##STR66##
Claim 11
Dependent Claim
10 words
A compound according to claim 1 having the formula: ##STR67##
Claim 12
Dependent Claim
10 words
A compound according to claim 1 having the formula: ##STR68##
Claim 13
Dependent Claim
10 words
A compound according to claim 1 having the formula: ##STR69##
Claim 14
Dependent Claim
10 words
A compound according to claim 1 having the formula: ##STR70##
Claim 15
Dependent Claim
66 words
A polyvinyl chloride resin composition having improved resistance to deterioration when heated at 350° F., comprising a polyvinyl chloride resin formed at least in part of the recurring group: ##STR71## and having a chlorine content in excess of 49%, where X is either hydrogen or chlorine, and an amount sufficient to improve resistance to deterioration of the resin of a compound in accordance with claim 1.
Claim 16
Dependent Claim
20 words
A polyvinyl chloride resin composition in accordance with claim 14 in which the polyvinyl chloride resin is polyvinyl chloride homopolymer.
Claim 17
Dependent Claim
25 words
A polyvinyl chloride resin composition in accordance with claim 14 in which the polyvinyl chloride resin is a copolymer of vinyl chloride and vinyl acetate.
Claim 18
Dependent Claim
51 words
An olefin polymer composition having improved resistance to deterioration comprising an olefin polymer selected from the group consisting of polymers of alpha-olefins having from two to six carbon atoms and polystyrene, and an amount sufficient to improve resistance to deterioration of the resin of a compound in accordance with claim 1.
Claim 19
Dependent Claim
14 words
An olefin polymer composition in accordance with claim 17 wherein the polyolefin is polypropylene.
Claim 20
Dependent Claim
14 words
An olefin polymer composition in accordance with claim 17 wherein the polyolefin is polyethylene.
Claim 21
Dependent Claim
37 words
An acrylonitrile-butadiene-styrene polymer having improved resistance to deterioration when heated at 300° F. comprising an acrylonitrilebutadiene-styrene polymer and an amount sufficient to improve resistance to deterioration of the resin of a compound in accordance with claim 1.
Claim 22
Dependent Claim
33 words
A polyester resin composition having improved resistance to deterioration comprising a polyester resin and an amount sufficient to improve resistance to deterioration of the resin of a compound in accordance with claim 1.
Claim 23
Dependent Claim
33 words
A polyamide resin composition having improved resistance to deterioration comprising a polyamide resin and an amount sufficient to improve resistance to deterioration of the resin of a compound in accordance with claim 1.
Claim 24
Dependent Claim
35 words
An ethylene-vinyl acetate copolymer composition having improved resistance to deterioration comprising an ethylene-vinyl acetate copolymer and an amount sufficient to improve resistance to deterioration of the resin of a compound in accordance with claim 1.
Claim 25
Dependent Claim
33 words
A polyurethane resin composition having improved resistance to deterioration comprising a polyurethane resin and an amount sufficient to improve resistance to deterioration of the resin of a compound in accordance with claim 1.
References Cited (Backward Citations)
US3839273A
Cited
US4016168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |