Process for making alpha-phase phthalocyanine blue pigment compr

Details Process for making alpha-phase phthalocyanine blue pigment compr Process for making alpha-phase phthalocyanine blue pigment compr

1988-01-19

1989-08-22

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540140, 540141, C09B 4704

Patent

active

048597708

ABSTRACT:
Alpha-phase phthalocyanine pigment crystals are produced as substantially 100 percent isometric crystals by first activating a phthalocyanine pigment crude, followed by combining the activated crude with water and a surfactant, whereby a mixture is formed. The mixture is then milled so that a pigment slurry is formed.

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patent: 4224222 (1980-09-01), Spietschka et al.
patent: 4257951 (1981-03-01), Matrick
patent: 4289698 (1981-09-01), Stepp

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