Borox dispersion milling of quinacridones

Details Borox dispersion milling of quinacridones Borox dispersion milling of quinacridones

C - Chemistry, Metallurgy

09

B

241/136

C09B 67/04 (2006.01) C09B 48/00 (2006.01)

Patent

CA 1215346

TITLE Borax Dispersion Milling of Quinacridones ABSTRACT OF THE DISCLOSURE A process of reducing the particle size of oversize crude quinacridones to pigmentary grade material by ball or rod milling the crude quinacri- done with 3-10 parts per part by weight pigment of borax pentahydrate and 5-40% by weight, based on pig- ment, of a monohydric alcohol containing 4-8 carbon atoms or a polyethylene glycol having a molecular weight of 150-600.

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