Method for the production of phthalocyanine pigment...

Details Method for the production of phthalocyanine pigment... Method for the production of phthalocyanine pigment...

2003-11-27

2008-12-02

Green, Anthony J (Department: 1793)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S410000, C106S411000, C106S413000, C540S122000, C540S130000, C540S131000, C540S132000, C540S133000, C540S135000, C540S136000, C540S140000, C540S141000

Reexamination Certificate

active

07459016

ABSTRACT:
A method for the production of a phthalocyanine pigment preparation includes finely distributing a crude phthalocyanine pigment by dry milling, wet milling, salt kneading, acid pasting or acid swelling to give a pre-pigment, the pre-pigment is subjected to a finishing treatment in a mixture of water and an organic solvent at alkaline pH, increased temperature and in the presence of at least one pigment dispersant from the group of phthalocyanine sulphonic acids, phthalocyanine carboxylic acids, phthalocyanine sulphonate salts, phthalocyanine carboxylate salts and phthalocyanine suiphonamides.

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