Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1987-03-12
1988-10-11
Lieberman, Allan M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524505, 525 89, 525 95, 525 98, 525193, C08L 2316, C08L 5302, C08K 536
Patent
active
047772034
ABSTRACT:
A molding thermoplastic, elastomeric resin composition having superior flexibility, impact resistance, mechanical strengths and moldability is provided, which composition comprises (1) a block copolymer expressed by the formula B-A-B' (wherein A is a conjugated diene polymer block and B and B' each are an aromatic vinyl compound polymer block of a specified molecular weight and are the same or different and contained in the copolymer in a specified proportion); a non-crystalline ehtylene-.alpha.-olefin random copolymer; a propylene-ethylene block coplymer and/or a crystalline propylene-ethylene random copolymer; and a specified phenolic antioxidant, or (2) a specified proportion of a hydrogenated derivative of a block copolymer expressed by the formula B-A-B' wherein A, B and B' are as defined above, and having a specified solution viscosity and a specified proportion of a crystalline propylene-ethylene random copolymer having a specified flexural modulus.
REFERENCES:
patent: 4363885 (1982-12-01), Fukui et al.
patent: 4371662 (1983-02-01), Tone et al.
patent: 4386125 (1983-05-01), Shiraki et al.
patent: 4412016 (1983-10-01), Fukui et al.
patent: 4657970 (1987-04-01), Shiraki et al.
Chiku Shinji
Kawamura Takanobu
Oohashi Tamihiro
Chisso Corporation
Lieberman Allan M.
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