Rigmentary salt of a triphenylmethane compound and process for m

Details Rigmentary salt of a triphenylmethane compound and process for m Rigmentary salt of a triphenylmethane compound and process for m

1987-12-28

1990-07-31

Clingman, A. Lionel

Compositions: coating or plastic

Materials or ingredients

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

106500, C08K 500

Patent

active

049448064

ABSTRACT:
Pigmentary Opal Sulfate is made by combining triphenylpararosaniline (Opal Blue) with a dilute acid. The pigmentary Opal Sulfate is a substitute for Alkali Blue. The most preferred process for producing the pigmentary Opal Sulfate involves drowning a solution of Opal Blue in a highly agitated solution of dilute sulfuric acid.

REFERENCES:
patent: 3925094 (1975-12-01), Papenfuss et al.
patent: 4061464 (1977-12-01), Hahnke et al.
patent: 4062877 (1977-12-01), Hahnke et al.
patent: 4445904 (1984-05-01), Hahnk et al.

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