POLYAMIDE PARTICLE AND PROCESS FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To produce a spherical polyamide particle suitable for use in the cosmetic field, electrostatic coating, powder coating, the field of optical equipment, and the like that has an average particle size of not less than 10 μm to not more than 100 μm and has a narrow particle size...

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Bibliographic Details
Main Author MINAMI TOSHIKAZU
Format Patent
LanguageEnglish
Published 04.11.2005
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:PROBLEM TO BE SOLVED: To produce a spherical polyamide particle suitable for use in the cosmetic field, electrostatic coating, powder coating, the field of optical equipment, and the like that has an average particle size of not less than 10 μm to not more than 100 μm and has a narrow particle size distribution width. SOLUTION: The spherical polyamide particle having the average particle size of not less than 10 μm to not more than 100 μm is produced by reacting either one kind or two or more kinds of laurolactam and/or 6-8C cyclic lactams in an inert solvent and using a fine polyamide particle as a seed. It is preferable that a ratio of an average particle size of the target fine polyamide particle to the fine polyamide particle used as the seed is 1.5 times or more. COPYRIGHT: (C)2006,JPO&NCIPI
Bibliography:Application Number: JP20040129118