C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 67/04 (2006.01) C09B 67/22 (2006.01) C09B 67/50 (2006.01) G03F 7/00 (2006.01)
Patent
CA 2673741
The invention pertains to pigment compositions comprising from 70 to 93%, preferably from 81 to 93%, of .epsilon. copper phthalocyanine, from 5 to 18% of an aminomethyl-substituted phthalocyanine, from 2 to 15% of an ammonium sulfonato phthalocyanine and less than 2% of other phthalocyanine compounds, preferably made by wet-milling a mixture of .alpha. copper phthalocyanine and .epsilon. copper phthalocyanine together with the aminomethyl-substituted phthalocyanine and a milling aid in an organic liquid and adding the ammonium sulfonato phthalocyanine before the milling aid and the organic liquid are separated from the wet-milled mixture.
L'invention porte sur des compositions de pigment comprenant de 70 à 93%, mais de préférence de 81 à 93%, d'une phtalocyanine de cuivre .epsilon.; de 18% d'une phtalocyanine substituée par aminométhyle; de 2 à 15% d'une ammonium sulfonato phtalocyanine; et moins de 2% d'autres composés de phtalocyanine, de préférence obtenues par broyage par voie humide d'un mélange d'une phtalocyanine de cuivre .alpha. et d'une phthalocyanine de cuivre .epsilon. conjointement avec la phtalocyanine substituée par aminométhyle et un auxiliaire de broyage dans un liquide organique, puis addition de l'ammonium sulfonato phtalocyanine avant la séparation de l'auxiliaire de broyage et du liquide organique du mélange broyé par voie humide.
Deno Takashi
Jung Jangwon
Lee Hyeonkook
Ohwa Masaki
Ciba Holding Inc.
Fetherstonhaugh & Co.
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