Resinous particles for coating composition and its production

Details Resinous particles for coating composition and its production Resinous particles for coating composition and its production

C - Chemistry, Metallurgy

08

J

402/1, 400/5106

C08J 3/16 (2006.01) C08J 3/12 (2006.01) C09D 5/02 (2006.01) C09D 5/03 (2006.01)

Patent

CA 1105183

ABSTRACT OF THE DISCLOSURE The specification discloses a process for preparing resinous particles for a coating composition including the following steps. Firstly, a resin containing an ionic group, or a mixture of another type of resin and a dispersing agent containing an ionic group, is dissolved or ispersed in water by treatment with a neutralizing agent for the ionic group. Secondly, the resin is removed from solution or dispersion by the use of a powdering agent and the resin thus deposited is pulverized in the aqueous medium. Thirdly the powder thus formed is removed from the aqueous medium. The resulting powder can then be used to preparing coating compositions or can be used directly for spray coating. The advantage of this type of powdered material is that it is produced entirely without the use of organic solvents and their attendant pollution, health and fire hazards etc.

273814

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