Patent US4366281A successfully refreshed from Google Patents.
US4366281A
Expired / Lapsed
US
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Molding resin composition
Assignee: JSR Corp
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Filing: 1980-10-29
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Granted: 1982-12-28
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Expires: 2000-10-29
Abstract
Abstract A molding resin composition comprising [A] 100 parts by weight of a vinyl chloride resin, [B] 30-110 parts by weight of a graft copolymer wherein 90-50 parts by weight of a monomer mixture consisting of 10-40% by weight of an alkenyl aromatic compound, 20-50% by weight of an alkenyl cyanide compound and 20-50% by weight of a methacrylate is graft-copolymerized on 10-50 parts by weight of polybutadiene or a rubbery copolymer of 60% by weight or more of butadiene and a vinyl monomer copolymerizable therewith (the amount of toluene-insoluble fraction is preferably 50% by weight or less), the degree of grafting being 30-110% and the acetone-soluble fraction of the graft copolymer having an intrinsic viscosity of 0.4-1.5 dl/g as measured in methyl ethyl ketone at 30° C., [C] 3-50 parts by weight of a rubbery acrylonitrile-butadiene copolymer and [D] 15-100 parts by weight of a plasticizer for vinyl chloride resins. Said composition is suitable for producing soft or semi-rigid leather-like sheets by vacuum forming. Said sheets are excellent in heat-resistance, light-resistance and cold-resistance.
Inventors
- 👤 Mitsuo Abe
- 👤 Akira Kamiya
- 👤 Junya Itoh
- 👤 Masaaki Mawatari
- 👤 Fumio Kurihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L51/00; C08L51/04; C08L9/00; C08L9/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
149 words
A molding resin composition comprising [A] 100 parts by weight of a vinyl chloride resin, [B] 30-110 parts by weight of a graft copolymer wherein 90-50 parts by weight of a monomer mixture comprising 10-40% by weight of an alkenyl aromatic compound, 20-50% by weight of an alkenyl cyanide compound and 20-50% by weight of a methacrylate, is graft copolymerized on 10-50 parts by weight of polybutadiene or a rubbery copolymer of at least 60% by weight of butadiene with an alkenyl aromatic compound or an alkenyl cyanide compound, the degree of grafting of the graft copolymer being 30-110% and an acetone soluble fraction having an intrinsic viscosity as measured in methyl ethyl ketone at 30° C. of 0.4-1.5 dl/g, [C] 3-50 parts by weight of a rubbery acrylonitrile-butadiene copolymer having from 20-40% by weight acrylontrile and [D] 15-100 parts by weight of a plasticizer for vinyl chloride resins.
Claim 2
Dependent Claim
149 words
A molding resin composition comprising [A] 100 parts by weight of a vinyl chloride resin, [B] 30-110 parts by weight of a graft copolymer wherein 90-50 parts by weight of a monomer mixture comprising 10-40% by weight of an alkenyl aromatic compound, 20-50% by weight of an alkenyl cyanide compound and 20-50% by weight of a methacrylate, is graft copolymerized on 10-50 parts by weight of polybutadiene or a rubbery copolymer of at least 60% by weight of butadiene with an alkenyl aromatic compound or an alkenyl cyanide compound, the degree of grafting of the graft copolymer being 30-110% and an acetone soluble fraction having an intrinsic viscosity as measured in methyl ethyl ketone at 30° C. of 0.4-1.5 dl/g, [C] 3-50 parts by weight of a rubbery acrylonitrile-butadiene copolymer having from 20-40% by weight acrylontrile and [D] 15-100 parts by weight of a plasticizer for vinyl chloride resins.
Claim 3
Dependent Claim
34 words
The molding resin composition according to claim 1, wherein the amount of toluene-insoluble fraction in the polybutadiene or butadiene copolymer constituting the backbone of the graft copolymer [B] is 50% by weight or less.
Claim 4
Dependent Claim
37 words
The molding resin composition according to claim 1 or 2, wherein said butadiene copolymer is a copolymer of a major amount of butadiene and a minor amount of an alkenyl aromatic compound or an alkenyl cyanide compound.
Claim 5
Dependent Claim
21 words
The molding resin composition according to claim 3, wherein said butadiene copolymer is a copolymer of butadiene and styrene or acrylonitrile.
Claim 6
Dependent Claim
57 words
The molding resin composition according to claim 1, wherein the monomer mixture for forming said graft copolymer [B] comprises acrylonitrile or methacrylonitrile; at least one alkenyl aromatic compound selected from the group consisting of styrene, α-methylstyrene, vinyltoluene, m-chlorostyrene and p-chlorostyrene; and at least one methacrylate selected from the group consisting of methyl, ethyl, propyl and n-butyl methacrylates.
Claim 7
Dependent Claim
20 words
The molding resin composition according to claim 1, wherein the graft copolymer [B] has a degree of grafting of 50-110%.
Claim 8
Dependent Claim
28 words
The molding resin composition according to claim 1 or 6, wherein the acetone-soluble fraction of the graft copolymer [B] has an intrinsic viscosity of [η] of 0.5-1.3 dl/g.
Claim 9
Dependent Claim
27 words
The molding resin composition according to claim 1, 2 or 5, wherein said plasticizer [D] for vinyl chloride resins is dibutyl phthalate, dioctyl phthalate or diisodecyl phthalate.
Claim 10
Dependent Claim
26 words
The molding resin composition according to claim 1 which additionally contains a small amount of a stabilizer for vinyl chloride resins, a lubricant and a filler.
References Cited (Backward Citations)
US3670052A
Cited
US4042548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |