Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-01-29
1993-11-23
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 88, 525 98, 525 99, 525240, C08L 5302, C08L 2302, C08L 2310, C08L 2316
Patent
active
052644880
ABSTRACT:
A medical device produced by molding a composition comprising (I) 10 to 50% by weight of a polyolefin resin (II) 1 to 89% by weight of a hydrogenated diene polymer obtained by hydrogenating not less than 90 mol % of a butadiene moiety of a linear or branched copolymer consisting of a polybutadiene block segment (C) having a 1,2-vinyl bond content of not more than 20 mol % and a block segment (D) of either polybutadiene or a vinyl aromatic compound-butadiene copolymer whose butadiene moiety has a 1,2-vinyl bond content in the range of from 25 to 95 mol % and having a block structure represented by C-(D-C).sub.n or (C-D).sub.m, wherein n stands for an integer of at least 1 and m for an integer of at least 2, and (III) 1 to 89% by weight of at least one member selected from the group consisting of (i) a block copolymer composed of a polymer block having a vinyl aromatic compound as a main component thereof and a polymer block having a conjugate diene compound as a main component thereof, (ii) a hydrogenated random copolymer of a vinyl aromatic compound and a conjugated diene compound, and (iii) a hydrogenated block copolymer composed of a polymer block having a vinyl aromatic compound as a main component thereof and a polymer block having a conjugate diene compound as a main component thereof, wherein the sum of (1)+(R)+(III) is 100% by weight.
REFERENCES:
patent: 4491648 (1988-01-01), Durben et al.
Kora Shinichi
Miyachi Takumi
Takeuchi Motokazu
Toyama Yasuo
Yamashita Shuzo
Clark W. R. H.
Seidleck James J.
Terumo Kabushiki Kaisha
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