US4337324A
Expired / Lapsed
US
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Vinyl chloride resin composition
Assignee: Deutsches Zentrum für Luft- und Raumfahrt eV
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Filing: 1981-01-19
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Granted: 1982-06-29
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Expires: 2001-01-19
Abstract
Abstract A monomer mixture comprising alpha -methylstyrene or 2-isopropenylnaphthalene, methyl methacrylate, and acrylonitrile is polymerized in the presence of a crosslinked polymer obtained by copolymerizing a monofunctional monomer such as alpha -methylstyrene with a small quantity of a polyfunctional monomer such as divinylbenzene to obtain a copolymer (C). A vinyl chloride resin composition formulated by blending the copolymer (C) thus obtained with a vinyl chloride resin and an impact strength modifier resin in a specific proportion possesses improved thermal deformation resistance and impact strength while retaining processability comparable to that of the vinyl chloride resin mixed with the impact strength modifier resin.
Inventors
- 👤 Haruhiko Yusa
- 👤 Yo Iizuka
- 👤 Humio Akutsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:11
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L51/00; C08L51/003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
219 words
A vinyl chloride resin composition with improved thermal deformation resistance, impact strength, and processability which comprises: (A) a vinyl chloride resin; (B) an impact strength modifier resin; and (C) a copolymer, and in which the vinyl chloride resin (A) constitutes 20 to 80% of the composition, the total of the impact strength modifier resin (B) and the copolymer (C) constitutes 80 to 20% of the composition, and the copolymer (C) constitutes 90 to 20% of the total of the impact strength modifier resin (B) and the copolymer (C), said copolymer (C) having been obtained by polymerizing 90 to 30 parts of a monomer mixture comprising 20 to 80% of a monomer selected from the group consisting of α-methylstyrene and 2-isopropenylnaphthalene, 1 to 70% of methyl methacrylate, 5 to 30% of acrylonitrile, and 0 to 30% of a monomer copolymerizable with the preceding monomers in the presence of a crosslinked polymer obtained by copolymerizing 10 to 70 parts of a monofunctional monomer selected from the group consisting of methyl methacrylate, acrylonitrile, methacrylonitrile, styrene, α-methylstyrene, 2-isopropenylnaphthalene, and mixtures thereof with 0.01 to 7 parts of a polyfunctional monomer having a plurality of non-conjugated ethylenic unsaturations, the sum of the quantities of said monofunctional monomer and said monomer mixture being 100 parts, all quantities expressed in percent and parts being by weight.
Claim 2
Dependent Claim
219 words
A vinyl chloride resin composition with improved thermal deformation resistance, impact strength, and processability which comprises: (A) a vinyl chloride resin; (B) an impact strength modifier resin; and (C) a copolymer, and in which the vinyl chloride resin (A) constitutes 20 to 80% of the composition, the total of the impact strength modifier resin (B) and the copolymer (C) constitutes 80 to 20% of the composition, and the copolymer (C) constitutes 90 to 20% of the total of the impact strength modifier resin (B) and the copolymer (C), said copolymer (C) having been obtained by polymerizing 90 to 30 parts of a monomer mixture comprising 20 to 80% of a monomer selected from the group consisting of α-methylstyrene and 2-isopropenylnaphthalene, 1 to 70% of methyl methacrylate, 5 to 30% of acrylonitrile, and 0 to 30% of a monomer copolymerizable with the preceding monomers in the presence of a crosslinked polymer obtained by copolymerizing 10 to 70 parts of a monofunctional monomer selected from the group consisting of methyl methacrylate, acrylonitrile, methacrylonitrile, styrene, α-methylstyrene, 2-isopropenylnaphthalene, and mixtures thereof with 0.01 to 7 parts of a polyfunctional monomer having a plurality of non-conjugated ethylenic unsaturations, the sum of the quantities of said monofunctional monomer and said monomer mixture being 100 parts, all quantities expressed in percent and parts being by weight.
Claim 3
Dependent Claim
74 words
A vinyl chloride resin composition as claimed in claim 1, wherein the impact strength modifier resin (B) is selected from the group consisting of (I) copolymers of (a) an elasticity-imparting monomer selected from the group consisting of diolefins and alkyl acrylates and (b) a rigidity-imparting monomer selected from the group consisting of alkyl methacrylates, styrene, α-methylstyrene, acrylonitrile, and methacrylonitrile, and (II) substituted polyethylenes selected from the group consisting of chlorinated polyethylenes and chlorosulfonated polyethylenes.
Claim 4
Dependent Claim
36 words
A vinyl chloride resin composition as claimed in claim 1, wherein the polyfunctional monomer is selected from the group consisting of divinylbenzene, trivinylbenzene, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, 1,3-butanediol dimethacrylate, allyl acrylate, and allyl methacrylate.
Claim 5
Dependent Claim
16 words
A vinyl chloride resin composition as claimed in claim 1, wherein the monofunctional monomer comprises α-methylstyrene.
Claim 6
Dependent Claim
16 words
A vinyl chloride resin composition as claimed in claim 1, wherein the monofunctional monomer comprises 2-isopropenylnaphthalene.
Claim 7
Dependent Claim
56 words
A vinyl chloride resin composition as claimed in claim 1, wherein the monomer is copolymer (c) which is copolymerizable with α-methylstyrene or 2-isopropenylnaphthalene, methyl methacrylate and acrylonitrile is selected from the group consisting of styrene, vinyl toluene, methacrylonitrile, vinyl acetate, methacrylic acid, acrylic acid, maleic acid, fumaric acid, and itaconic acid, and esters of the acids.
Claim 8
Dependent Claim
69 words
A vinyl chloride resin composition as claimed in claim 1, wherein the vinyl chloride resin (A) is selected from the group consisting of (I) polyvinyl chloride, (II) copolymers of 80% or more vinyl chloride and a monomer copolymerizable therewith selected from vinylidene chloride, vinyl acetate, vinyl stearate, acrylic esters, methacrylic esters, styrene, acrylonitrile, ethylene, and propylene, (III) a post-chlorinated product of the homopolymer or copolymer and (IV) mixtures thereof.
References Cited (Backward Citations)
US4220734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |