Process for manufacturing thermosetting resin particles

Details Process for manufacturing thermosetting resin particles Process for manufacturing thermosetting resin particles

C - Chemistry, Metallurgy

08

J

C08J 3/12 (2006.01) C08F 6/18 (2006.01) C08J 3/14 (2006.01) C09D 5/03 (2006.01)

Patent

CA 2165878

Thermosetting resin particles having a narrow particle size distribution useful for powder coating application are produced by the steps of (a) providing a first water-soluble polymer having a cloud point within the range between 30°C and 90°C and a second water-soluble polymer not having any cloud point; (b) preparing an aqueous suspension in which an organic solvent-containing, liquid thermosetting resin composition is suspended as primary particles of oil droplets in an aqueous suspension medium containing the first and second water-soluble polymers, (c) heating the suspension to a temperature higher than the cloudy point to allow the oil droplets to agglomerate into secondary particles of larger particle sizes, (d) removing the organic solvent contained in the particles during or after step (c) and optionally (e) recovering the particles.

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