Patent US4467061A successfully refreshed from Google Patents.
US4467061A
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Weather resistant polyolefin composition
Assignee: Tonen Chemical Corp
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Filing: 1982-12-27
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Granted: 1984-08-21
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Expires: 2002-12-27
Abstract
Abstract This invention relates to a polyolefin composition with an improved weather resistance, which comprises a polyolefin blended with (1) a benzotriazole compound, (2) a heterocyclic hindered amine compound and (3) a phenyl benzoate compound or nickel complex compound.
Inventors
- 👤 Noboru Yamamoto
- 👤 Masakichi Shimada
- 👤 Shigeo Yamazaki
- 👤 Tsuyoshi Kanai
- 👤 Kazuo Sei
- 👤 Yoshiro Umemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:34
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435; C08K5/0091; C08K5/04; C08K5/10; C08K5/101; C08K5/105; C08K5/3467; C08K5/3472; C08K5/3475
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
A polyolefin composition comprising a polyolefin containing 20-79 wt% of crystalline polyolefin, 20 to 50 wt% of ethylene-α-olefin copolymer rubber and 1 to 30 wt% of inorganic filler blended with (1) at least one benzotriazole compound, (2) at least one heterocyclic hindered amine compound and (3) at least one of phenyl benzoate compound or nickel complex compound.
Claim 2
Dependent Claim
57 words
A polyolefin composition comprising a polyolefin containing 20-79 wt% of crystalline polyolefin, 20 to 50 wt% of ethylene-α-olefin copolymer rubber and 1 to 30 wt% of inorganic filler blended with (1) at least one benzotriazole compound, (2) at least one heterocyclic hindered amine compound and (3) at least one of phenyl benzoate compound or nickel complex compound.
Claim 3
Dependent Claim
12 words
The polyolefin composition of claim 1, wherein the polyolefin is crystalline polypropylene.
Claim 4
Dependent Claim
25 words
The polyolefin composition of claim 1, wherein the ethylene-α-olefin copolymer rubber is selected from the group consisting of ethylene-propylene copolymers, ethylene-butene-1 copolymers and ethylene-hexene-1 copolymers.
Claim 5
Dependent Claim
55 words
The polyolefin composition of claim 1, wherein 100 parts by weight of a polyolefin is blended with 0.01 to 1 part by weight of a benzotriazole compound, 0.01 to 1 part by weight of a heterocyclic hindered amine compound and 0.01 to 1 part by weight of a phenyl benzoate compound or nickel complex compound.
Claim 6
Dependent Claim
62 words
The polyolefin composition of claim 1, wherein the inorganic filler is selected from the group consisting of talc, mica, wollastonite, calcium carbonate, barium sulfate, magnesium carbonate, clay, alumina, silica, calcium sulfate, carbon fibers, glass fibers, metal fibers, quartz sand, silicastone, carbon black, titanium oxide, magnesium hydroxide, asbestos, zeolite, molybdenum, diatomaceous earth, sericite, shirasu, calcium hydroxide, calcium sulfite, sodium sulfate, bentonite and graphite.
Claim 7
Dependent Claim
23 words
The polyolefin composition of claim 1, wherein the benzotriazole compounds are 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-5'-t-butylphenyl)benzotriazole, 2-(2'-hydroxy-5'-amylphenyl)benzotriazole, 2-(2'-hydroxy-4'-octoxyphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-di-t-butylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-diisoamylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-dimethylphenyl)benzotriazole, 2-(2'-hydroxy-3'-t-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2-(2'-hydroxy-3',5'-di-t-butylphenyl)-5-chlorobenzotraizole, 2-(2'-hydroxy-3',5'-dimethylphenyl)-5-chlorobenzotriazole and 2-(2'-hydroxy-3',5'-dichlorophenyl)benzotriazole.
Claim 8
Dependent Claim
32 words
The polyolefin composition of claim 1, wherein the heterocyclic hindered amine compounds are di-(2,2,6,6-tetramethyl-4-piperidyl)sebacate, 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, a condensate of succinic acid and N-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine, 1,2,3,4-tetra-(2,2,6,6-tetramethyl-4-piperidyl)-butanetetracarboxylate, 1,4-di-(2,2,6,6-tetramethyl-4-piperidyl)-2,3-butanedione, tris-(2,2,6,6-tetramethyl-4-piperidyl)-trimellitate, 1,2,2,6-pentamethyl-4-piperidylstearate, 1,2,2,6,6-pentamethyl-4-piperidyl-n-octoate, bis-(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, tris-(2,2,6,6-tetramethyl-4-piperidyl)nitrileacetate, 4-hydroxy-2,2,6,6-tetramethylpiperidine and 4-hydroxy-1,2,2,6,6-pentamethylpiperidine.
Claim 9
Dependent Claim
23 words
The polyolefin composition of Claim 1, wherein the phenyl benzoate compounds are phenyl salicylate, p-octylphenyl salicylate, p-butylphenyl salicylate, resorcinol monobenzoate, 2,4-di-t-butylphenyl-3,5-di-t-butyl-4-hydroxybenzoate and 4-octylphenyl-3,5-di-t-butyl-4-hydroxybenzoate.
Claim 10
Dependent Claim
20 words
The polyolefin composition of claim 1, wherein the nickel complex compounds are [2,2'-thiobis(4-t-octylphenolate)-n-butylamine nickel] (II) and nickel salt of bis-(3,5-di-t-butyl-4-hydroxybenzylphosphonate).
Claim 11
Dependent Claim
22 words
The polyolefin composition of claim 1, wherein the polyolefin further contains at least one member from hindered phenol antioxidants and thioester antioxidants.
Claim 12
Dependent Claim
21 words
The polyolefin composition of claim 1, wherein the polyolefin further contains at least one member from inorganic pigments and organic pigments.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |