| 摘要 |
A method for producing coagulated particles from an emulsion polymerization latex, characterized in that it comprises (A) adjusting the temperature of the emulsion polymerization latex to the range of TmŒ15‹C, wherein Tm represents a softening temperature of the polymer in the latex, (B) adding polyethylene oxide to the latex, (C) adding a coagulating agent so as to form a state wherein the phases of a polymer component and water are separated, (D) further adding a coagulating agent to thereby form a water suspension of coagulated polymer particles having a volume average particle diameter of 50 to 500 mum, and thereafter, (E) adjusting the temperature of the suspension to be higher than Tm. The above method provides coagulated particles being reduced in the amount of a fine powder and having a low water content, and allows the operation for forming particles to be carried out at a temperature being near to a softening temperature of the polymer. ® KIPO & WIPO 2007
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