公开(公告)号：US10202496B2

公开(公告)日：2019-02-12

申请号：US15039270

申请日：2014-11-07

Applicant: TORAY INDUSTRIES, INC.

Inventor： Toshiya Takahashi ,  Kei Makita ,  Naoki Matsuda ,  Koya Ito ,  Yoshinori Kondo ,  Yuji Echigo

IPC: C08J3/14 ,  H01M6/18 ,  C08J3/12

Abstract: A production method of polyvinylidene fluoride resin particles comprising: (Process a1) a process to precipitate the polyvinylidene fluoride resin particles by adding a 100 mass % solution in total consisting of 75 to 99 mass % organic solvent, 1 to 25 mass % water and 0.5 to 15 mass % polyvinylidene fluoride resin to a poor solvent of the polyvinylidene fluoride resin; or (Process a2) a process to precipitate polyvinylidene fluoride resin particles by performing a flash-crystallization of the solution. With such a configuration, PVDF resin particles can be industrially produced by simple operations without using surfactant agent.

公开(公告)号：US20200062892A1

公开(公告)日：2020-02-27

申请号：US16344126

申请日：2017-11-13

Applicant: Toray Industries, Inc.

Inventor： Chizuru Asahara ,  Koya Ito ,  Toshiya Takahashi ,  Kei Makita ,  Hisashi Miyama

IPC: C08G63/183 ,  C08J3/11 ,  C08J3/14

Abstract: A method produces polybutylene terephthalate resin particles, which includes (a) a step of heating a polybutylene terephthalate resin in an organic solvent to obtain a solution of a polybutylene terephthalate resin (dissolution step), and (b) a step of flash-cooling the solution to precipitate polybutylene terephthalate resin particles (precipitation step). The method produces PBT resin particles by a simple operation that can be performed industrially.