Disclosed herein is a thermoplastic resin composition which comprises:
(a) a polyphenylene ether resin or a polyphenylene ether-containing resin composition,
(b) a polypropylene grafted with a styrene-based monomer and/or a propylene copolymer grafted with a styrene-based monomer,
(c) an ethylene-α-olefin copolymer grafted with a styrene-based monomer, said ethylene-α-olefin copolymer having a density of 0.85-0.91 g/cm³ and a maximum melting peak temperature of 100°C and above measured with a differential scanning calorimeter (DSC), and
(d) an optional rubbery substance.
Also disclosed herein is a process a process for producing a thermoplastic resin composition which comprises incorporating a preblend composed of:
(a′) a polyphenylene ether resin or a polyphenylene ether-containing resin composition,
(b′) a polypropylene and/or a propylene copolymer,
(c′) an ethylene-α-olefin copolymer having a density of 0.85-0.91 g/cm³ and a maximum melting peak temperature of 100°C and above measured with a differential scanning calorimeter (DSC), and
(d′) an optional rubbery substance
with a styrene-based monomer and an organic peroxide, followed by kneading with heating.
The thermoplastic resin composition has good moldability and yields molded articles having well-balanced physical properties.
此处公开的热塑性
树脂组合物包括
(a) 聚苯醚
树脂或含聚苯醚的
树脂组合物、
(b) 与
苯乙烯基单体接枝的聚
丙烯和/或与
苯乙烯基单体接枝的
丙烯共聚物、
(c) 与
苯乙烯基单体接枝的
乙烯-α-烯烃共聚物,所述
乙烯-α-烯烃共聚物的密度为 0.85-0.91 g/cm³,用差示扫描量热仪(
DSC)测量的最大熔融峰温度为 100°C 及以上,以及
(d) 可选的橡胶物质。
本文还公开了一种生产热塑性
树脂组合物的工艺,该工艺包括加入由以下物质组成的预混料: 1:
(a′) 聚苯醚
树脂或含聚苯醚的
树脂组合物、
(b′) 聚
丙烯和/或
丙烯共聚物、
(c′)
乙烯-α-烯烃共聚物,其密度为 0.85-0.91 克/立方厘米,用差示扫描量热计(
DSC)测得的最大熔峰温度为 100℃及以上,和
(d′) 可选的橡胶物质
用
苯乙烯基单体和有机过氧化物混合,然后加热捏合。
这种热塑性
树脂组合物具有良好的可模塑性,可制成具有均衡物理性能的模塑制品。