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    • 47. 发明授权
    • Thermoplastic resin composition
    • 热塑性树脂组合物
    • US08247478B2
    • 2012-08-21
    • US12224037
    • 2007-02-07
    • Toru Terada
    • Toru Terada
    • C08L5/04
    • C08L51/003C08F265/04C08F265/06C08L1/08C08L5/00C08L27/06C08L101/00C08L2205/03C08L2666/02C08L2666/24C08L2666/04
    • A thermoplastic resin composition of the present invention has high impact resistance, not lowering the weather resistance thereof, even though the amount of an impact resistance improver added thereto is small. The thermoplastic resin composition contains 100 parts by weight of (A) a thermoplastic resin and from 0.5 to 20 parts by weight of (B) a graft copolymer, wherein the graft copolymer (B) contains from 70% to 99% by weight of a crosslinked core (b2) prepared through polymerization of a monomer for the core (b2), containing 70% by weight or more of an acrylate, in the presence of from 0.5% to 20% by weight of a non-crosslinked seed (b1) having a weight-average molecular weight of 40,000 or less, and from 0.5% to 10% by weight of a shell (b3) prepared through polymerization of a monomer for the shell (b3) containing 50% by weight or more of a methacrylate, and the thermoplastic composition further contains from 0.01 to 3.0 parts by weight of (C) a water-soluble polymer compound having the property of forming a physical gel, relative to 100 parts by weight of the graft copolymer (B).
    • 本发明的热塑性树脂组合物即使添加有抗冲击性改进剂的量少,也具有高抗冲击性,不降低耐候性。 热塑性树脂组合物含有100重量份的(A)热塑性树脂和0.5-20重量份的(B)接枝共聚物,其中接枝共聚物(B)含有70-99重量%的 交联核心(b2),其通过在0.5重量%至20重量%的非交联种子(b1)的存在下,通过聚合含有70重量%或更多的丙烯酸酯的芯(b2)的单体制备, 重均分子量为40,000以下,以及0.5〜10重量%的通过聚合含有50重量%以上的甲基丙烯酸酯的壳(b3)的单体制备的壳(b3) 相对于100重量份的接枝共聚物(B),热塑性组合物还含有0.01〜3.0重量份的(C)具有形成物理凝胶性质的水溶性高分子化合物。