Patent US3369579A successfully refreshed from Google Patents.
Patent EP0032627A2 successfully refreshed from Google Patents.
EP0032627A2
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Thermally stable polyolefin composition and process for its preparation
Assignee: Tonen General Sekiyu KK
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Filing: 1980-12-19
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Granted: —
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Expires: 2000-12-19
Abstract
Abstract A polyolefin composition comprising a polyolefin and an inorganic filler is given improved thermal stability by that addition of stabilizing amounts of each of a hindered phenol type antioxidant, a sulfur type antioxidant and a fatty acid ester of a neopentyl type polyhydric alcohol.
Inventors
- 👤 Toshio Hoshino
- 👤 Kazuharu Hirano
- 👤 Toru Matsumura
- 👤 Keiichi Morikubo
- 👤 Masami Yabune
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 22:50
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
41 words
A thermally stable polyolefin composition comprising a polyolefin and an inorganic filler characterized by stabilizing amounts of each of (A) a hindered phenol type antioxidant, (B) a sulfur type antioxidant and (C) a fatty acid ester of neopentyl type polyhydric alcohol.
Claim 2
Dependent Claim
41 words
A thermally stable polyolefin composition comprising a polyolefin and an inorganic filler characterized by stabilizing amounts of each of (A) a hindered phenol type antioxidant, (B) a sulfur type antioxidant and (C) a fatty acid ester of neopentyl type polyhydric alcohol.
Claim 3
Dependent Claim
61 words
A thermally stable polyolefin composition according to claim 1 characterized in the (A), (B) and (C) are present in amounts of: from 0.01 to 5 parts by weight of (A), from 0.02 to 10 parts by weight of (B) and from 0.5 to 5 parts by weight of (C), respectively per 100 parts by weight of the polyolefin and inorganic filler.
Claim 4
Dependent Claim
33 words
A thermally stable polyolefin composition according to claim 1 or 2 characterized in that the polyolefin is a homopolymer or copolymer of one or more alphaolefins having from 2 to 6 carbon atoms.
Claim 5
Dependent Claim
17 words
A thermally stable polyolefin composition according to claim 3 characterized in that said polyolefin is a copolymer.
Claim 6
Dependent Claim
17 words
A thermally stable polyolefin composition according to claim 3 characterized in that the polyolefin is crystalline polypropylene.
Claim 7
Dependent Claim
32 words
A thermally stable composition according to any of claims 1 to 5 characterized in that the fatty acid ester of a neopentyl type polyhydric alcohol is a stearic acid ester of pentaerythritol.
Claim 8
Dependent Claim
23 words
A stabilized polyolefin composition of any of claims 1 to 6 characterized in that the hindered phenol type antioxidant is (1,2,5-tris(3,4-di-tert-butyl-4-hydro- xylbenzyl) isocyanurate).
Claim 9
Dependent Claim
22 words
A stabilized polyolefin composition according to any of claims 1 to 7 characterized in that the sulfur type antioxidant is dimyrystyl thiodipropionate.
Claim 10
Dependent Claim
26 words
A thermally stable composition according to any of claims 1 to 6 and 8 characterized in the hindered phenol type antioxidant is tetrakis (methylene 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)proprionate) methane.
Claim 11
Dependent Claim
50 words
A process for thermally stabilizing a polyolefin composition comprising a polyolefin and at least one organic filler, characterized by incorporating into the composition stabilizing amounts of each of a hindered phenol type antioxidant (b) a sulfur type antioxidant and (c) a fatty acid ester of a neopentyl type polyhydric alcohol.
Claim 12
Dependent Claim
50 words
A process for thermally stabilizing a polyolefin composition comprising a polyolefin and at least one organic filler, characterized by incorporating into the composition stabilizing amounts of each of a hindered phenol type antioxidant (b) a sulfur type antioxidant and (c) a fatty acid ester of a neopentyl type polyhydric alcohol.
Claim 13
Dependent Claim
58 words
A process according to claim 10 characterized in that (A), (B) and (C) are incorporated in amounts of: from 0.01 to 5 parts by weight of (A), from 0.02 to 10 parts by weight of (B) and from 0.5 to 5 parts by weight of (C), respectively per 100 parts by weight of the polyolefin and inorganic filler.
References Cited (Backward Citations)
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