POLYCARBONATE RESIN COMPOSITION, ITS PREPARATION METHOD AND POLYCARBONATE RESIN MOLDED PRODUCT

摘要

PROBLEM TO BE SOLVED: To increase mechanical strength and suppress mold shrinkage in a polycarbonate resin without deteriorating its transparency. SOLUTION: A polycarbonate resin composition contains 0.1-100 pts.wt. silica against 100 pts.wt. polycarbonate resin. The silica has (a) a pore volume of >1.6 ml/g and≤10 ml/g, (b) a metal impurity content of≤1,000 ppm, (c) primary particles which are three-dimensionally connected to each other to form secondary particles, (d) a primary particle size of 0.5-50 nm and (e) a secondary particle size of 1-500 nm. COPYRIGHT: (C)2005,JPO&NCIPI