Patent US2822546A successfully refreshed from Google Patents.
EP0155847A2
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EP
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A stabilizer for synthetic resins and resins stabilized thereby
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1985-03-19
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Granted: —
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Expires: 2005-03-19
Abstract
Abstract A stabilizer for synthetic resins containing as an effective component a mixture comprising at least one phenol type compound selected from those of formula (I), wherein R 1 represents a C 1 -C 3 alkyl group, and at lest one sulfur type compound (II) selected from those of formula (11-1), wherein R 2 represents a C 4 -C 20 alkyl group, and those of formula (II-2), wherein R 3 represents a C 3 -C 18 alkyl group, and R 4 and R s are selected independently from a hydrogen atom and C 1 -C 6 alkyl groups.
Inventors
- 👤 Tamaki Ishii
- 👤 Shinichi Yachigo
- 👤 Manji Sasaki
- 👤 Masahisa Shionoya
- 👤 Haruki Okamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08K5/04; C08K5/15; C08K5/156; C08K5/1575; C08K5/378
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
(1) A stabilizer for synthetic resins containing as an effective component a mixture comprising at least one phenol type compound selected from those of formula (I), wherein R 1 represents a C 1 -C 3 alkyl group, and at least one sulfur type compound (II) selected from those of formula (II-1), wherein R 2 represents a C 4 -C 20 alkyl group, and those of formula (II-2). wherein R 3 represents a C 3 -C 18 alkyl group, and R 4 and R 5 are selected independently from a hydrogen atom and C 1 -C 6 alkyl groups.
Claim 2
Dependent Claim
14 words
(2) A stabilizer according to claim 1 containing the phenol type compound (I) 3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5·5]undecane.
Claim 3
Dependent Claim
17 words
(3) A stabilizer according to claim 1 or Z containing the sulfur type compound (II-1) tetrakis(3-dodecyl- thiopropionyloxymethyl)methane.
Claim 4
Dependent Claim
19 words
( 4 ) A stabilizer according to claim 1,2 or 3 containing the sulfur type compound (II-2) 3,9-bis(2-dodecyl- thioethyl)-2,4,8,10-tetraoxaspiro[5·5]undecane.
Claim 5
Dependent Claim
16 words
(5) A stabilizer according to any preceding claim containing the sulfur type compound (II-2) 3,9-bis(2-octadecyl- thiopropyl)-2,4,8,10-tetraoxaspiro[5·5]undecane.
Claim 6
Dependent Claim
31 words
(6) A stabilizer according to any preceding claim wherein the weight ratio of compound(s) I to compound(s) II is 1 to 0.5-15, preferably 1 to 1-10, most preferably 1 to 2-6.
Claim 7
Dependent Claim
12 words
(7) A synthetic resin incorporating a stabilizer according to any preceding claim.
Claim 8
Dependent Claim
15 words
(8) A polyolefin resin incorporating a stabilizer according to any of claims 1 to 5.
Claim 9
Dependent Claim
15 words
(9) A polypropylene resin incorporating a stabilizer according to any of claims 1 to 5.
Claim 10
Dependent Claim
28 words
(10) A resin according to any of claims 7 to 9 incorporating 0.01 to 5 parts by weight of stabilizer based on 100 parts by weight of resin.
References Cited (Backward Citations)
No citation records indexed.
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