Patent ID: 6815137
Filing Date: 2004-11-09
Classification: B41C,C08J,G03F

Abstract:
A process for producing polymer fine particles comprising: dispersing a solution obtained by dissolving a hydrophobic polymer in a solvent immiscible with water in an aqueous phase comprising fine particles of an oxide or hydroxide of at least one element selected from the group consisting of elements belonging to 2 to 15 groups in the periodic table using a surfactant so as to provide oil droplets containing the solvent immiscible with water and the hydrophobic polymer, and then removing the solvent from the oil droplets to form polymer fine particles dispersed in water; wherein the hydrophobic polymer has the structural unit represented by the following formula (I): wherein R1, R2 and R3 each represents a hydrogen atom or a hydrocarbon group having 8 or less carbon atoms. R4 represents an alkoxy group or acyloxy group having 1 to 40 carbon atoms. k represents an integer of 0 to 2, m represents an integer of 0 to 3, the sum of k and m is 3 or less, X represents a monovalent metal or a hydrogen atom, Z represents a group selected from the group consisting of the following groups: wherein R5 represents a hydrogen atom or a hydrocarbon group having 8 or less carbon atoms, R6 represents an alkylene group having 5 or less carbon atoms or a divalent organic residue formed by linking plural chain carbon atomic groups each other through a carbon atom or a nitrogen atom, n represents an integer of 0 to 4.