| 摘要 |
<p>1,252,241. Thermoplastic polycarbonate compositions. FARBENFABRIKEN BAYER A.G. 8 Jan., 1970 [8 Jan., 1969], No. 973/70. Heading C3R. Thermoplastic polycarbonate moulding compositions comprise 90.5-99.5 parts by weight of a polycarbonate derived from a dihydric phenol and 0À5-9À5 parts by weight of a graft copolymer containing (a) 50-90% by weight of polybutadione, (b) 5-40% of acrylonitrile, and (c) 5-45% by weight of an aromatic vinyl hydrocarbon. In the examples, pigmented compositions are obtained by melt mixing: (1) TiO 2 , bisphenol A polycarbonate and polybutadiene/styrene/acrylonitrile graft copolymer, and (2) as in (1) but with Cadmopure Red BN in place of TiO 2 .</p> |
