| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing polymer particles, which can give a polymer slurry excellent in withdrawability and filterability. SOLUTION: This method produces the polymer particles having the highest crystalline melting peak temperature of 30 to 70°C as determined with a differential scanning calorimeter and comprises mixing a solution of the polymer with a poor solvent for the polymer under the following conditions (a) to (c): (a) the polymer concentration of the polymer solution is 5 to 40 wt.% based on the polymer solution, (b) the ratio of the poor solvent to the polymer solution is 0.5 or higher by volume, and (c) the temperature of a mixed solution comprising the polymer solution and the poor solvent is lower than the highest crystalline melting temperature of the polymer by at least 40°C. COPYRIGHT: (C)2005,JPO&NCIPI |
