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 (JP)
Application Number:
PCT/JP2018/017616
Publication Date:
March 21, 2019
Filing Date:
May 07, 2018
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08G69/16
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