Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-06-06
1998-09-22
Warzel, Mark L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 73, 525 86, 524494, 524504, C08L 5104
Patent
active
058114912
ABSTRACT:
A glass fiber-reinforced thermoplastic resin excellent in providing a balance between processability, tapping strength and heat resistance. The composition comprising (A) 10 to 60% by weight of a terpolymer which comprises N-phenylmaleimide, styrene and acrylonitrile, (B) 5 to 20% by weight of a graft polymer which comprises at least one rubber selected from the group consisting of a conjugated diene rubber, an ethylene-propylene rubber and an ethylene-butylene rubber comprising ethylene and butylene, to which rubber styrene and acrylonitrile are graft polymerized, (C) 10 to 80% by weight of a copolymer which comprises styrene and acrylonitrile, and (D) 5 to 35% by weight of glass fiber, wherein
(a) the terpolymer has an intrinsic viscosity of 0.20 dl/g to 0.70 dl/g, (b) the copolymer has an intrinsic viscosity of 0.40 dl/g to 1.00 dl/g, (c) the intrinsic viscosity of terpolymer is equal to or smaller than that of the copolymer, and (d) a styrene content in the copolymer minus a styrene content in the terpolymer is from +20 to -5% by weight.
REFERENCES:
patent: 4567233 (1986-01-01), Tomono et al.
patent: 4877833 (1989-10-01), Kondo et al.
patent: 4879343 (1989-11-01), Aoki et al.
patent: 5039719 (1991-08-01), Watanabe et al.
Hirai Mikio
Jagawa Yasutoshi
Nishio Takeyoshi
Ogura Kiyoshi
Sumitomo Dow Limited
Toyota Jidosha & Kabushiki Kaisha
Warzel Mark L.
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