PREPARATION OF BETA-CRYSTALLINE LINEAR QUINACRIDONE

Title:

PREPARATION OF BETA-CRYSTALLINE LINEAR QUINACRIDONE

Document Type and Number:

Japanese Patent JPS52145430

Kind Code:

A

Abstract:

PURPOSE: To prepare β-crystalline linear quinacridone having fine crystal sizes and good dispersibility by simple operation of grinding treatment of a quinacridone having an arbitrary crystal in an aqueous alkali without danger.

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Inventors:

NIWA TOSHIO
OZAWA TETSUO
HIHARA TOSHIO

Application Number:

JP6261476A

Publication Date:

December 03, 1977

Filing Date:

May 29, 1976

Export Citation:

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Assignee:

MITSUBISHI CHEM IND

International Classes:

C09B67/20; C09B48/00; C09B67/00; (IPC1-7): C09B48/00; C09B67/00

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Next Patent: PREPARATION OF COLORANT FOR POLYURETHANE