Patent ID: 8148357
Filing Date: 2012-04-03
Classification: A61K,A61Q,C08J

Abstract:
1. A method for the production of resin particles, comprising the steps of: adding a liquid material having a boiling point of 100° C. or higher to an aqueous dispersion consisting of water-insoluble thermoplastic resin particles and water to yield a mixture, recovering a wet cake from the mixture by filtration, and drying the wet cake to thereby yield resin particles; wherein the aqueous dispersion contains 100 parts by weight of the resin particles, “A” parts by weight of water, and “B” parts by weight of the liquid material, wherein the wet cake obtained as a result of filtration of the aqueous dispersion contains “C” percent by weight of water, and wherein the parameters “A”, “B”, and “C” satisfy the following condition: wherein each individual resin particle is coated with the liquid material to form an independent coated resin particle; wherein the amount of the liquid material in the dispersion is from 0.2 to 30 parts by weight to 100 parts by weight of the resin; and wherein the liquid material is at least one selected from the group consisting of a monohydric alcohol, dihydric alcohol, trihydric alcohol, polyhydric alcohol, polyalkylene glycol, glycol ether and glycol ether acetate.