PIGMENT COMPOSITION Russian patent published in 1996 - IPC

Abstract RU 2069678 C1

FIELD: organic chemistry, pigments. SUBSTANCE: product: pigment composition has 95.0-99.5 mole% 3,3-dichlorobenzidine pigment of the formula: where: R¹=R² - H; R¹=R²=CH₃ and 0.5-5.0 mole% calcium or barium salt of bis-azodye of the general formula: where R¹=R² - H; CH₃; ; ; ; M⁺⁺=Ca⁺⁺;Ba⁺⁺. Composition exhibits enhanced staining capability that is 110-120%, transparency (up to 10 points) and provides pigment resistance to crystallization in polygraphic dyes. Synthesized pigments were used in polygraphy. EFFECT: improved method of synthesis, enhanced quality of composition. 1 tbl

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RU 2 069 678 C1

Authors

Sidorenko E.N.

Makarovskaja G.M.

Gorenko V.N.

Shuvalova A.A.

Lopukhov N.M.

Dates

1996-11-27—Published

1993-10-20—Filed