Two-step milling process for preparing pigmentary copper phthalo

Details Two-step milling process for preparing pigmentary copper phthalo Two-step milling process for preparing pigmentary copper phthalo

1980-03-24

1981-03-24

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

106288Q, 106309, C09B 4704

Patent

active

042579511

ABSTRACT:
Converting crude copper phthalocyanine (CPC) to pigmentary copper phthalocyanine (CPC) by two-stage milling with 5-400% by weight of alum and 0.6-3.7 cc of organic liquid per 100 grams of CPC in the first stage and 1.2-9.8 cc of organic liquid per 100 grams of CPC in the second stage with the total organic liquid being 4-13 cc per 100 grams CPC.

REFERENCES:
patent: 2556728 (1951-06-01), Graham
patent: 2556730 (1951-06-01), Graham
patent: 3017414 (1962-01-01), Minnich et al.
patent: 3030370 (1962-04-01), Jackson
patent: 3598625 (1971-08-01), Buckwalter
patent: 4088506 (1978-05-01), Wetzel
Moser et al., Phthalocyanine Compounds, pp. 157-162, Reinhold Pub. Corp., NY, (1963).

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