申请人:——
公开号:US20040054078A1
公开(公告)日:2004-03-18
Thermoplastic molding compositions essentially comprise
(A) from 20 to 99% by weight of at least one graft copolymer,
(B) from 1 to 80% by weight of a copolymer obtainable from at least one alpha-olefin and from at least one polar comonomer, with the proviso that the monomers used are not vinyl acetate or any vinylaromatic monomer, and
(C) from 0 to 80% by weight of a thermoplastic polymer, obtainable by polymerizing a monomer mixture, essentially consisting of
(c1) from 50 to 100% by weight of at least one vinylaromatic monomer and/or of a C
1
-C
8
-alkyl (meth)acrylate, and
(c2) from 0 to 50% by weight of at least one monofunctional comonomer, and
(D) from 0.1 to 15% by weight of a three-block polymer made from
(d1) from 5 to 90% by weight of polyethylene oxide and
(d2) from 95 to 10% by weight of polypropylene oxide
and having a central polypropylene oxide block with a molar mass of from 800 to 5 000 g/mol and terminal blocks made from polyethylene oxide,
where components A to D give 100% by weight in total.
A process for preparing the thermoplastic molding compositions is also described, as is their use.
热塑性模塑组合物主要包括
(A) 至少一种接枝共聚物,重量百分比为 20%至 99%、
(B) 1%至 80%(按重量计)由至少一种α-烯烃和至少一种极性共聚单体组成 的共聚物,但所使用的单体不得是醋酸乙烯酯或任何乙烯芳香族单体, 以及
(C) 0 至 80%(按重量计)的热塑性聚合物,可通过聚合单体混合物获得,该混 合物主要包括
(c1) 至少一种乙烯基芳香族单体和/或一种 C
1
-C
8
-烷基(甲基)丙烯酸酯,以及
(c2) 至少一种单官能团单体,重量百分比为 0 至 50%,以及
(D) 0.1 至 15%(按重量计)的三嵌段聚合物,由以下物质制成
(d1) 5%至 90%(按重量计)的聚环氧乙烷和
(d2) 95-10%(按重量计)的聚环氧丙烷
并具有摩尔质量为 800 至 5 000 克/摩尔的聚环氧丙烷中心嵌段和由聚环氧乙烷制成的终端嵌段、
其中 A 至 D 组份的总重量为 100%。
此外,还介绍了制备热塑性模塑组合物的工艺及其用途。