Process for preparing organic pigments of high tinctorial...

Details Process for preparing organic pigments of high tinctorial... Process for preparing organic pigments of high tinctorial...

C - Chemistry, Metallurgy

09

B

6/217

C09B 69/00 (2006.01) C09B 67/10 (2006.01)

Patent

CA 1039457

PROCESS FOR PREPARING ORGANIC PIGMENTS OF HIGH TINCTORIAL STRENGTH AND GRAIN SOFTNESS Abstract of the disclosure: An improved process for preparing an organic pigment having a high tinctorial strength by heating a crude organic pigment as an aqueous suspension having a consistency suitable for being pumped, to a temperature of from 80 to 300°C and for a period of from 10 seconds to 20 minutes in a continuously operating flow apparatus which is shaped as a heat exchanger provided with moving internal elements.

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