US4007158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel piperidine derivatives for the stabilization of synthetic polymers
Assignee: Sankyo Co Ltd
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Filing: 1974-07-03
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Granted: 1977-02-08
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Expires: 1994-07-03
Abstract
Abstract Novel piperidine derivatives of formula: ##STR1## (wherein 2 or 3 of R 1 , R 2 , R 3 , R 4 and R 5 represent alkyl groups having from 1 to 4 carbon atoms and the remainder of R 1 , R 2 , R 3 , R 4 and R 5 are hydrogen atoms, and R 6 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a substituted alkyl group, an aliphatic acyl group, an alkoxycarbonyl group or an aralkoxycarbonyl group) are useful as stabilizers for synthetic polymers.
Inventors
- 👤 Keisuke Murayama
- 👤 Syoji Morimura
- 👤 Takao Yoshioka
- 👤 Toshimasa Toda
- 👤 Eiko Mori
- 👤 Hideo Horiuchi
- 👤 Susumu Higashida
- 👤 Katsuaki Matsui
- 👤 Tomoyuki Kurumada
- 👤 Noriyuki Ohta
- 👤 Hisayou Osawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:13
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; C08K5/35
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
An improved polymer composition of the type comprising a synthetic polymer and a stabilizer therefor, the improvement comprising using as stabilizer at least one compound of formula: ##STR4## wherein: 2or 3 of R 1 , R 2 , R 3 , R 4 and R 5 represent alkyl groups having from 1 to 4 carbon atoms, and the remainder of R 1 , R 2 , R 3 , R 4 and R 5 represent hydrogen atoms; and R 6 is selected from the group consisting of: a hydrogen atom, alkyl groups, alkenyl groups, alkynyl groups, aralkyl groups, hydroxyalkyl groups, alkoxyalkyl groups, aliphatic and aromatic acyloxyalkyl groups, cyanoalkyl groups, haloalkyl groups, epoxyalkyl groups, alkoxycarbonylalkyl groups, aliphatic acyl groups, alkoxycarbonyl groups and aralkoxycarbonyl groups.
Claim 2
Dependent Claim
123 words
An improved polymer composition of the type comprising a synthetic polymer and a stabilizer therefor, the improvement comprising using as stabilizer at least one compound of formula: ##STR4## wherein: 2or 3 of R 1 , R 2 , R 3 , R 4 and R 5 represent alkyl groups having from 1 to 4 carbon atoms, and the remainder of R 1 , R 2 , R 3 , R 4 and R 5 represent hydrogen atoms; and R 6 is selected from the group consisting of: a hydrogen atom, alkyl groups, alkenyl groups, alkynyl groups, aralkyl groups, hydroxyalkyl groups, alkoxyalkyl groups, aliphatic and aromatic acyloxyalkyl groups, cyanoalkyl groups, haloalkyl groups, epoxyalkyl groups, alkoxycarbonylalkyl groups, aliphatic acyl groups, alkoxycarbonyl groups and aralkoxycarbonyl groups.
Claim 3
Dependent Claim
22 words
A composition as claimed in claim 1, wherein there is used from about 0.01 to about 5% by weight of said stabilizer
Claim 4
Dependent Claim
23 words
A composition as claimed in claim 1, wherein the synthetic polymer is selected from the group consisting of olefin, diene and styrene polymers.
Claim 5
Dependent Claim
24 words
A composition as claimed in claim 2, wherein the synthetic polymer is selected from the group consisting of monoolefin, conjugated diene and styrene polymers.
Claim 6
Dependent Claim
24 words
A composition as claimed in claim 1, wherein the synthetic polymer is selected from the group consisting of vinyl chloride and vinylidene chloride polymers.
Claim 7
Dependent Claim
27 words
A composition as claimed in claim 1, wherein the synthetic polymer is selected from the group consisting of polyacetals, polyesters, polyester ethers, polyamides, polyurethanes and epoxy resins.
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) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |