EP0055086A2
Expired / Lapsed
EP
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Polyvinyl chloride resin blends
Assignee: Lyondell Chemical Technology LP
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Filing: 1981-12-17
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Granted: —
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Expires: 2001-12-17
Abstract
Abstract A polyvinyl chloride resin blend having a high heat distortion temperature, comprising a blend of 60-80 percent by weight of a polyvinyl chloride resin and 20-40 percent by weight of a copolymer of a vinyl aromatic monomer, such as styrene, and either 14-27 percent by weight of maleic anhydride or 10-18 percent by weight of an imide derivative of maleic anhydride.
Inventors
- 👤 Kenneth Worley Doak
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 09:17
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L35/00; C08L35/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
88 words
A polyvinyl chloride resin blend comprising a blend of: (a) from 60-80 percent by weight of a polyvinyl chloride resin, and (b) from 20-40 percent by weight of a copolymer selected from the group consisting of: (1) a copolymer of a vinyl aromatic monomer and 14-27 percent by weight of maleic anhydride, and (2) a copolymer of a vinyl aromatic monomer and 10-18 percent by weight of an imide derivative of maleic anhydride, and having a heat distortion temperature 15-35")F higher than that of the polyvinyl chloride resin.
Claim 2
Dependent Claim
88 words
A polyvinyl chloride resin blend comprising a blend of: (a) from 60-80 percent by weight of a polyvinyl chloride resin, and (b) from 20-40 percent by weight of a copolymer selected from the group consisting of: (1) a copolymer of a vinyl aromatic monomer and 14-27 percent by weight of maleic anhydride, and (2) a copolymer of a vinyl aromatic monomer and 10-18 percent by weight of an imide derivative of maleic anhydride, and having a heat distortion temperature 15-35")F higher than that of the polyvinyl chloride resin.
Claim 3
Dependent Claim
26 words
A polyvinyl chloride resin blend as defined in Claim 1 wherein said vinyl aromatic monomer is selected from the group consisting of styrene, vinyltoluene and chlorostyrene.
Claim 4
Dependent Claim
29 words
A polyvinyl chloride resin blend as defined in Claim 2 wherein said copolymer is selected from the group consisting of a styrene-maleic anhydride copolymer and a vinyltoluene-maleic anhydride copolymer.
Claim 5
Dependent Claim
24 words
A polyvinyl chloride resin blend as defined in Claim 2 or Claim 3 wherein said copolymer contains 18-25 percent by weight of maleic anhydride.
Claim 6
Dependent Claim
23 words
A polyvinyl chloride resin blend as defined in Claim 3 or Claim 4 having a heat distortion . temperature of at least 190°F.
Claim 7
Dependent Claim
46 words
A polyvinyl chloride resin blend as defined in any one of Claims 3 to 5 wherein said copolymer contains 5 - 30 percent by weight of at least one rubber selected from the group consisting of block copolymer rubbers of styrene and butadiene, and epichlorohydrin rubbers.
Claim 8
Dependent Claim
27 words
A polyvinyl chloride resin blend as defined in Claim 2 wherein said copolymer is selected from the group consisting of a styrene-maleimide copolymer and a vinyltoluene-maleimide copolymer.
Claim 9
Dependent Claim
20 words
A polyvinyl chloride resin blend as defined in Claim 7 wherein said copolymer contains 12-18 percent by weight of maleimide.
Claim 10
Dependent Claim
41 words
A polyvinyl chloride resin blend as defined in Claim 7 or Claim 8 wherein said copolymer contains 5-30% by weight of at least one rubber selected from the group consisting of block copolymer rubbers of styrene and butadiene, and. epichlorohydrin rubbers.
Claim 11
Dependent Claim
82 words
A polyvinyl chloride resin blend comprising a blend of: (a) from 60-80 percent by weight of a polyvinyl chloride resin, and (b) from 20-40 percent by weight of a copolymer selected from the group consisting of: (1) a copolymer of styrene and 18-25 percent by weight of maleic anhydride, and (2) a copolymer of styrene and 12-18 percent by weight of an imide derivative of maleic anhydride, and having a heat distortion temperature 15-35°F higher than that of the polyvinyl chloride resin.
Claim 12
Dependent Claim
82 words
A polyvinyl chloride resin blend comprising a blend of: (a) from 60-80 percent by weight of a polyvinyl chloride resin, and (b) from 20-40 percent by weight of a copolymer selected from the group consisting of: (1) a copolymer of styrene and 18-25 percent by weight of maleic anhydride, and (2) a copolymer of styrene and 12-18 percent by weight of an imide derivative of maleic anhydride, and having a heat distortion temperature 15-35°F higher than that of the polyvinyl chloride resin.
References Cited (Backward Citations)
No citation records indexed.
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