Toray Industries, Inc.

Kei Makita

Toshiya Takahashi

Kei Watanabe

Hiroshi Takezaki

Yuji Echigo

Kazusada Takeda

Yosuke Nishimura

Takae Ono

Yoshinori Kondo

Hiroaki Akasaka

Naoki Matsuda

Tomohiro Sakane

Koya Ito

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.

Polyvinylidene fluoride resin particles and method for producing same

A polyarylene sulfide resin powder/grain composition in which 100 weight parts of polyarylene sulfide resin powder/grain material whose average particle diameter exceeds 1 &#x3bc;m and is less than or equal to 100 &#x3bc;m and whose uniformity degree is less than or equal to 4 has been blended with 0.1 to 5 weight parts of an inorganic fine particle having an average particle diameter greater than or equal to 20 nm and less than or equal to 500 nm.

Polyarylene sulfide resin powder/grain composition and method of producing same

This invention provides a process for producing fine PPS resin particles and dispersion thereof by industrially applicable simple operation. This invention further provides very fine PPS resin particles, and furthermore provides fine PPS resin particles uniform in particle size. This invention is a process for producing fine polyphenylene sulfide resin particles comprising the following steps (a) and (b); (a) a step of heating a polyphenylene sulfide resin in an organic solvent, for obtaining a solution with the polyphenylene sulfide resin dissolved therein (dissolution step) (b) a step of flushing-cooling the aforementioned solution, for precipitating the fine particles of the polyphenylene sulfide resin (precipitation step).

Process for producing fine polyphenylene sulfide resin particles, fine polyphenylene sulfide resin particles, and dispersion thereof

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Nagoya, Japan

Kei Makita