US4042548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly weather-resistant, thermoformable sheeting
Assignee: JSR Corp
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Filing: 1975-10-15
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Granted: 1977-08-16
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Expires: 1995-10-15
Abstract
Abstract A highly weather-resistant, thermoformable sheeting prepared by mixing from 45 to 70 parts by weight of a rigid thermoplastic resin selected from the group consisting of polyvinyl chlorides and copolymers each of which is composed mostly of a vinyl chloride and a small amount of a monoolefinic monomer copolymerizable with the vinyl chloride, from 20 to 50 parts by weight of a thermoplastic resin obtained by a graft polymerization of from 20 to 40 parts by weight of an ethylene-propylene copolymer rubber or ethylene-propylene-diene terpolymer with from 60 to 80 parts by weight of a vinyl monomer mixture consisting of from 40 to 90 percent by weight of an alkenyl aromatic compound and from 10 to 60 percent by weight of at least one monomer copolymerizable with the alkenyl aromatic compound, and from 5 to 35 parts by weight of an acrylonitrile-butadiene rubber, with from 5 to 50 parts by weight of a plasticizer or plasticizers added to the 100 parts by weight of the resinous mixture.
Inventors
- 👤 Mitsuo Abe
- 👤 Masaki Nagata
- 👤 Masafumi Kikuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; C08L51/00; C08L51/04; C08L51/06; C08L9/00; C08L9/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
171 words
A highly weather-resistant, thermoformable sheeting prepared by mixing (a) from 45 to 70 parts by weight of a rigid thermoplastic resin selected from the group consisting of polyvinyl chlorides and copolymers each of which is composed mostly of vinyl chloride and a small amount of a monoolefinic monomer copolymerizable with the vinyl chloride, from 20 to 50 parts by weight of a thermoplastic resin obtained by a graft polymerization of from 20 to 40 parts by weight of an ethylene-propylene copolymer rubber or ethylene-propylene-diene terpolymer with from 60 to 80 parts by weight of a vinyl monomer mixture consisting of from 40 to 90 percent by weight of an alkenyl aromatic compound and from 10 to 60 percent by weight of at least one monomer copolymerizable with the alkenyl aromatic compound, and from 5 to 35 parts by weight of an acrylonitrile-butadiene rubber, with (b) from 5 to 50 parts by weight of a plasticizer or plasticizers for polyvinyl chloride added to 100 parts by weight of the resinous mixture (a).
Claim 2
Dependent Claim
171 words
A highly weather-resistant, thermoformable sheeting prepared by mixing (a) from 45 to 70 parts by weight of a rigid thermoplastic resin selected from the group consisting of polyvinyl chlorides and copolymers each of which is composed mostly of vinyl chloride and a small amount of a monoolefinic monomer copolymerizable with the vinyl chloride, from 20 to 50 parts by weight of a thermoplastic resin obtained by a graft polymerization of from 20 to 40 parts by weight of an ethylene-propylene copolymer rubber or ethylene-propylene-diene terpolymer with from 60 to 80 parts by weight of a vinyl monomer mixture consisting of from 40 to 90 percent by weight of an alkenyl aromatic compound and from 10 to 60 percent by weight of at least one monomer copolymerizable with the alkenyl aromatic compound, and from 5 to 35 parts by weight of an acrylonitrile-butadiene rubber, with (b) from 5 to 50 parts by weight of a plasticizer or plasticizers for polyvinyl chloride added to 100 parts by weight of the resinous mixture (a).
Claim 3
Dependent Claim
14 words
A sheeting according to claim 1, wherein the polyvinyl chloride is granular polyvinyl chloride.
Claim 4
Dependent Claim
26 words
A sheeting according to claim 1, wherein the alkenyl aromatic compound is at least one compound selected from the group consisting of styrene, α-methylstyrene, and p-methylstyrene.
Claim 5
Dependent Claim
37 words
A sheeting according to claim 1, wherein the monomer copolymerizable with the alkenyl aromatic compound is at least one compound selected from the group consisting of vinylcyanic compounds, esters of acrylic acid and esters of methacrylic acid.
Claim 6
Dependent Claim
20 words
A sheeting according to claim 4, wherein said copolymerizable monomer is selected from the group consisting of acrylonitrile and methacrylonitrile.
Claim 7
Dependent Claim
24 words
A sheeting according to claim 4, wherein said copolymerizable monomer is selected from the group consisting of methyl acrylate, ethyl acrylate and octyl acrylate.
Claim 8
Dependent Claim
22 words
A sheeting according to claim 4, wherein said copolymerizable monomer is selected from the group consisting of butyl methacrylate and methyl methacrylate.
Claim 9
Dependent Claim
30 words
A sheeting according to claim 1, wherein the polyvinyl chloride plasticizer is selected from the group consisting of esters of phthalic acid, esters of trimellitic acid and epoxy-fatty acid esters.
Claim 10
Dependent Claim
23 words
A sheeting according to claim 8, wherein said plasticizer is selected from the group consisting of dioctyl phthalate, diisodecyl phthalate and trioctyl trimellitate.
Claim 11
Dependent Claim
85 words
A sheeting according to claim 4, wherein the alkenyl aromatic compound is at least one compound selected from the group consisting of styrene, α-methylstyrene and p-methylstyrene; the monomer copolymerizable with the alkenyl aromatic compound is at least one compound selected from the group consisting of vinylcyanic compounds, esters of acrylic acid and esters of methacrylic acid; the polyvinyl chloride is granular polyvinyl chloride; and the plasticizer is selected from the group consisting of esters of phthalic acid, esters of trimellitic acid and epoxy-fatty acid esters.
References Cited (Backward Citations)
US3808293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |