Patent EP0060524A2 successfully refreshed from Google Patents.
EP0060524A2
Expired / Lapsed
EP
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Thermoplastic rubber consisting of a mixture of polypropylene, high-impact polystyrene and a styrene/diene block copolymer
Assignee: Montefina SA
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Filing: 1982-03-11
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Granted: —
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Expires: 2002-03-11
Abstract
Abstract Synthetic thermoplastic rubber consisting of a mixture containing from 10% to 45% by weight of polypropylene, from 10% to 45% by weight of high-impact polystyrene and from 30% to 80% by weight of elastomeric copolymer of the linear type, of styrene/diene blocks whose diene is either butadiene or isoprene, having at least three polymeric sequences and a content in styrene lower than 50% by weight.
Inventors
- 👤 Jean Castelein
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:06
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L51/00; C08L51/04; C08L53/00; C08L53/02; C08L2205/00; C08L2205/03; C08L25/00; C08L25/02; C08L25/04; C08L25/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
98 words
1) Thermoplastic synthetic rubbers consisting of a mixture containing from 10 to 45% by weight of crystal line polypropylene, from 10% to 45% by weight of high-impact polystyrene and from 30% to 80% by weight of a styrene/diene block copolymer, of the linear type, in which the dienic monomer is either butadiene or isoprene, said block copolymer having a structure of'three or more sequences, and is represented by the formula S-(D-S) n wherein n is an integer, preferably 1, and wherein S = styrene, D = butadiene or isoprene, with a content in styrene below 50% by weight.
Claim 2
Dependent Claim
98 words
1) Thermoplastic synthetic rubbers consisting of a mixture containing from 10 to 45% by weight of crystal line polypropylene, from 10% to 45% by weight of high-impact polystyrene and from 30% to 80% by weight of a styrene/diene block copolymer, of the linear type, in which the dienic monomer is either butadiene or isoprene, said block copolymer having a structure of'three or more sequences, and is represented by the formula S-(D-S) n wherein n is an integer, preferably 1, and wherein S = styrene, D = butadiene or isoprene, with a content in styrene below 50% by weight.
Claim 3
Dependent Claim
40 words
2) Thermoplastic synthetic rubbers according to claim 1, characterized in that they contain from 12% to 30% by weight of polypropylene, from 12% to 30% b.w. of high--impact polystyrene and from 50% to 75% b.w. of a styrene/diene block copolymer.
References Cited (Backward Citations)
No citation records indexed.
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