公开(公告)号：EP1624025A1

公开(公告)日：2006-02-08

申请号：EP05254891.4

申请日：2005-08-05

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Ebeling, Thomas ,  Marugan, Monica Martinez ,  Qu, Zhaohui ,  Siripurapu, Srinivas

IPC: C08L69/00 ,  C08K5/523

CPC classification number: C08K5/523 ,  C08L55/02 ,  C08L69/00 ,  C08L83/10 ,  C08L2201/00 ,  C08L2201/02 ,  C08L83/00 ,  C08L2666/02

Abstract: A flame retardant thermoplastic composition having excellent physical properties comprises about 20 to about 90 wt.% of a polycarbonate resin; up to about 35 wt.% of an impact modifier; about 0.5 to about 30 wt.% of a polysiloxane-polycarbonate copolymer comprising about 8 to about 30 wt.% polydimethylsiloxane units or the equivalent molar amount of other diorganosiloxane units; and about 0.5 to about 20 wt.% of a phosphorus-containing flame retardant, each based on the total combined weight of the thermoplastic composition, exclusive of any filler. In one embodiment a sample of the thermoplastic composition having a thickness of 2.5 mm (± 10%) achieves a UL94 5VA rating Thinner samples may also achieve this rating. The compositions are useful in forming flame retardant thin-walled articles.

Abstract translation: 具有优异物理性能的阻燃热塑性组合物包含约20至约90重量％的聚碳酸酯树脂; 至多约35重量％的抗冲改性剂; 约0.5至约30重量％的聚硅氧烷 - 聚碳酸酯共聚物，其包含约8至约30重量％的聚二甲基硅氧烷单元或等摩尔量的其它二有机硅氧烷单元; 和约0.5至约20重量％的含磷阻燃剂，各自基于热塑性组合物的总组合重量，不包括任何填料。 在一个实施方案中，厚度为2.5mm（±10％）的热塑性组合物的样品达到UL94 5VA等级稀释剂样品也可以达到该等级。 该组合物可用于形成阻燃薄壁制品。