PURPOSE: To obtain a molded article containing uniformly dispersed additive, by mixing a granular polycarbonate resin having a specific particle diameter distribution with a granular additive having a specific particle diameter, and using the granular mixture as the molding raw material.
CONSTITUTION: (A) A granular polycarbonate resin having a particle diameter distribution characterized by the distribution formula R=100e×p(-bDpn) [R is plus-sieve weight %; Dp is particle diameter; b is a constant; n is 3W8], the particle diameter of 0.2W2mm corresponding to the 50wt% accumulative plus- sieve, and a bulk density of 0.4W0.75g/ml and prepared by separating from a solution of a polycarbonate resin at a temperature lower than the melting point of the polycarbonate resin is mixed with (B) 0.0001W50wt%, preferably 0.005W30wt% granular additive other than the component A and having an average particle diameter of 0.005μW2mm (e.g. mold-release agent, lubricant, etc.), and the mixture is molded.
MATSUNO AKIRA
MARUYAMA SEIICHIRO
NAGAYAMA TAKAHIRO
| JPS52845A | 1977-01-06 | |||
| JPS59133228A | 1984-07-31 |