Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1983-10-07
1984-12-25
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 84, 525 86, 525148, 525316, C08L 5104, C08L 5502, C08L 6900
Patent
active
044905068
ABSTRACT:
A thermoplastic resin composition excellent in impact resistance and moldability and improved in falling ball impact strength at a weld part which comprises (A) a polycarbonate resin having a reduced viscosity at 25.degree. C. in chloroform of 0.40 to 0.55 and (B) a diene-rubber modified resin comprising 10 to 100% by weight of a graft polymer of a diene rubber chosen from polybutadiene, styrene/butadiene copolymer and butadiene-acrylonitrile copolymer, with an aromatic vinyl compound and at least one of a vinyl cyanide and an alkyl unsaturated carboxylate grafted thereon and 90 to 0% by weight of a copolymer of an aromatic vinyl compound with at least one of a vinyl cyanide and an alkyl unsaturated carboxylate. The diene-rubber modified resin has apparent melt viscosities at 250.degree. C. of 5.times.10.sup.3 to 1.times.10.sup.5 poise at a shear rate of 10.sup.2 sec.sup.-1 and of 1.5.times.10.sup.3 to 1.times.10.sup.4 poise at a shear rate of 10.sup.3 sec.sup.-1, the weight proportion of the components (A) and (B) being from 20:80 to 80:20.
REFERENCES:
patent: 3813358 (1974-05-01), O'Connell
patent: 3947524 (1976-03-01), Hozumi et al.
patent: 4205140 (1980-05-01), Liebig et al.
patent: 4243764 (1981-01-01), Rudd
Honda Yasuhiro
Ito Akitoshi
Sakano Hajime
Yano Motoichi
Lieberman Allan M.
Sumitomo Naugatuck Co. Ltd.
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