发明名称 |
POLYCARBONATE RESIN COMPOSITION FOR GAS ASSIST INJECTION MOLDING, PROCESS FOR PRODUCING BLOW-MOLDED ARTICLE, AND BLOW-MOLDED ARTICLE |
摘要 |
A process by which a molded article, especially a ribbed one, consisting mainly of a polycarbonate resin and having a relatively high percentage of hollowness can be obtained so as to have excellent evenness in wall thickness and in which rib formation is easy; and a polycarbonate resin composition for use in the process. The polycarbonate resin composition for gas assist injection molding is a composition which comprises (A) 30 to 100 wt.% polycarbonate resin and (B) 70 to 0 wt.% styrene resin, and in which the ratio of the melt viscosity eta H (Pa.sec) as measured at a proper molding temperature and a shear rate of 10 sec<-1> to the melt viscosity eta L (Pa.sec) as measured at that temperature and a shear rate or 1,000 sec<-1>, eta H/ eta L, is 5 or higher. The process comprises using the polycarbonate resin composition to produce a blow molding by gas assist injection molding in which the volume of the mold cavity is increased by gas injection under pressure. A molded article produced from the polycarbonate resin composition by the gas assist injection molding process is provided.
|
申请公布号 |
WO0032692(A1) |
申请公布日期 |
2000.06.08 |
申请号 |
WO1999JP06536 |
申请日期 |
1999.11.24 |
申请人 |
IDEMITSU PETROCHEMICAL CO., LTD.;NODERA, AKIO;MITSUTA, NAOKI;HARA, KOUICHI |
发明人 |
NODERA, AKIO;MITSUTA, NAOKI;HARA, KOUICHI |
分类号 |
C08J5/00;B29C45/00;B29C45/17;B29K69/00;C08L25/00;C08L25/04;C08L33/20;C08L51/04;C08L55/02;C08L69/00;(IPC1-7):C08L69/00;C08K7/04 |
主分类号 |
C08J5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|