METHOD AND APPARATUS FOR SERIALLY PRODUCING PORUS SPHERICAL POLYAMIDE PARTICLE

• Main Authors: FUKUNAGA TOSHIFUMI, NAKAYAMA KIMIO, ARITOMI TADATOSHI, ASANO YUKIHIKO, NAKANO MAKOTO, SHOJI TATSUYA, YAO SHIGERU
• Format: Patent
• Language: English
• Published: 08.06.2006
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a method for producing porus spherical polyamide particles having a uniform particle size in a large scale, able to stably supply the porus particles having the particle size in a specific range, a relative particle size distribution, a small pore size and a specific surface area with high crystallinity in relation to the method and the apparatus for serially producing the porus polyamide particles. SOLUTION: The method for serially producing the porus spherical polyamide particles is to prepare a temporary solution by mixing a solution (A) comprising an aliphatic polyamide and its solvent with an organic nonsolvent (B) of the polyamide and water (C), to precipitate the polymer and obtain the dispersed porus spherical particles, and comprises a specific serial process. COPYRIGHT: (C)2006,JPO&NCIPI