Molding resin composition

Details Molding resin composition Molding resin composition

1988-01-21

1989-06-27

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 95, 525 99, 525 89, C08L 2316, C08L 5302

Patent

active

048431257

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 ethylene-.alpha.-olefin random copolymer; a propylene-ethylene block copolymer 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.
patent: 4705823 (1987-11-01), Choi et al.
patent: 4737536 (1988-04-01), Kawase et al.

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