Patent ID: 9045632
Filing Date: 2015-06-02
Classification: B22F,B28B,C04B,C08K,C08L,Y10T

Abstract:
1. A method for producing a composition for injection molding which contains an inorganic powder composed of at least one of a metal material and a ceramic material and a binder containing a polyacetal-based resin and a glycidyl group-containing polymer, wherein the method comprises: cryogenically grinding a first resin containing the polyacetal-based resin as a main component; cryogenically grinding a second resin containing the glycidyl group-containing polymer as a main component; mixing a powder obtained by grinding the first resin, a powder obtained by grinding the second resin, and the inorganic powder, thereby obtaining a mixed powder; and kneading the mixed powder, wherein the powder obtained by grinding the first resin has an average particle size that is 3 to 20 times an average particle size of the inorganic powder; and the powder obtained by grinding the second resin has an average particle size that is 3 to 50 times the average particle size of the inorganic powder.