公开(公告)号：BR7502712A

公开(公告)日：1976-03-16

申请号：BR7503462

申请日：1975-05-05

Applicant: HOECHST AG

Inventor： SCHIESSLER S ,  SPIETSCHKA E ,  ELINKMANN H

IPC: C09B67/12 ,  C09B47/04

Abstract: Highly pure alpha -copper phthalocyanine is obtained when a product regenerated from alpha -copper phthalocyanine sulfate by hydrolysis with water is aftertreated in an aqueous medium containing a polar organic non-aromatic compound which is water-soluble or liquid. The aftertreated product has an especially high tinctorial strength, is very easily dispersible and has a very pure reddish-blue shade.

公开(公告)号：DK196075A

公开(公告)日：1975-11-07

申请号：DK196075

申请日：1975-05-05

Applicant: HOECHST AG

Inventor： SCHIESSLER S ,  SPIETSCHKA E ,  ELINKMANN H-G

IPC: C09B67/12 ,  C09B

Abstract: Highly pure alpha -copper phthalocyanine is obtained when a product regenerated from alpha -copper phthalocyanine sulfate by hydrolysis with water is aftertreated in an aqueous medium containing a polar organic non-aromatic compound which is water-soluble or liquid. The aftertreated product has an especially high tinctorial strength, is very easily dispersible and has a very pure reddish-blue shade.