公开(公告)号：AU6459774A

公开(公告)日：1975-07-17

申请号：AU6459774

申请日：1974-01-17

Applicant: HOECHST AG

Inventor： WEINGARTEN FRIEDRICH ,  RIEPER WOLFGANG ,  HUNGER KLAUS ,  RIBKA JOACHIM

IPC: C09D7/00 ,  C09B29/33 ,  C09B67/10 ,  C09B67/20 ,  C09D7/12 ,  C09B29/32

Abstract: Process for the aftertreatment of the azo pigment of the formula C.I. PIGMENT ORANGE 36 wherein the crude pigment obtained after coupling is heated to temperatures from 100 DEG to 150 DEG C. in dry or wet condition in a solvent which is water-immiscible or not indefinitely water-miscible and the pigment is isolated in known manner. The pigment aftertreated in this way shows substantially improved hiding power while the same pigment prepared in the usual way has poor hiding power and can not be used in stoving lacquers.

公开(公告)号：CA1027941A

公开(公告)日：1978-03-14

申请号：CA190476

申请日：1974-01-18

Applicant: HOECHST AG

Inventor： HUNGER KLAUS ,  RIBKA JOACHIM ,  WEINGARTEN FRIEDRICH ,  RIEPER WOLFGANG

IPC: C09D7/00 ,  C09B29/33 ,  C09B67/10 ,  C09B67/20 ,  C09D7/12

Abstract: Process for the aftertreatment of the azo pigment of the formula C.I. PIGMENT ORANGE 36 wherein the crude pigment obtained after coupling is heated to temperatures from 100 DEG to 150 DEG C. in dry or wet condition in a solvent which is water-immiscible or not indefinitely water-miscible and the pigment is isolated in known manner. The pigment aftertreated in this way shows substantially improved hiding power while the same pigment prepared in the usual way has poor hiding power and can not be used in stoving lacquers.