Title:
PERYLENEE3*4*9*100TETRACARBOXYLIC ACID DIIMIDE PIGMENTS* PROCESS FOR MANUFACTURE THEREOF AND USE THEREOF
Document Type and Number:
Japanese Patent JPS5247822
Kind Code:
A
Abstract:
A new pigmentary form of perylene-3,4,9,10-tetracarboxylic acid diimide of the formula which has a specific surface area (measured by the BET method) of from 10 to 35 m2/g and a maximum in the particle size distribution at from 0.1 to 0.5 mu m, the proportion of particles between these sizes being at least 50% of the total distribution and the mean ratio of length to width being from 3:1 to 1:1. The pure shade of the new pigmentary form gives strongly yellowish red colorations which are very pure and very bright. The new pigmentary form also has a good hiding power, which is from 2 to 3 times as great as that of the pigmentary forms of the prior art.
Inventors:
RUUDOUITSUHI GARU
UORUFUGANGU FUABIAN
UORUFUGANGU FUABIAN
Application Number:
JP12137076A
Publication Date:
April 16, 1977
Filing Date:
October 12, 1976
Export Citation:
Assignee:
BASF AG
International Classes:
C08K5/3437; C09B5/62; C09B67/02; C09B67/10; C09D11/037; (IPC1-7): C09B57/00; C09D11/00; C09D17/00; D06P1/52