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Title:
METHOD FOR PRODUCING POLYAMIDE FINE PARTICLES, AND POLYAMIDE FINE PARTICLES
Document Type and Number:
WIPO Patent Application WO/2018/207728
Kind Code:
A9
Abstract:
A method for producing polyamide fine particles by polymerizing monomers (A) for a polyamide in the presence of a polymer (B) at a temperature not lower than the crystallization temperature of a polyamide to be obtained, wherein the monomers (A) for a polyamide and the polymer (B) are uniformly dissolved when the polymerization starts and polyamide fine particles are precipitated after the polymerization. Polyamide fine particles which have a number average particle diameter of 0.1-100 μm, a sphericity of 90 or more, a particle diameter distribution index of 3.0 or less, a linseed oil absorption of 100 mL/100 g or less and a crystallization temperature of 150°C or higher. Especially, the present invention is able to provide a polyamide having a high crystallization temperature in the form of fine particles which have smooth surfaces, a narrow particle size distribution and a high sphericity.

Inventors:
ASANO, Itaru (Toray Industries Inc., 9-1, Oe-cho, Minato-ku, Nagoya-sh, Aichi 02, 〒4558502, JP)
Application Number:
JP2018/017616
Publication Date:
March 21, 2019
Filing Date:
May 07, 2018
Export Citation:
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Assignee:
TORAY INDUSTRIES, INC. (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku Tokyo, 66, 〒1038666, JP)
International Classes:
C08G69/16
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