公开(公告)号：BR7404850D0

公开(公告)日：1975-01-21

申请号：BR485074

申请日：1974-06-12

Applicant: HOECHST AG

Inventor： SCHIESSLER S ,  PLESSEN H ,  FISCHER E

IPC: C01B17/88 ,  C01B17/90

Abstract: Contaminated sulfuric acid which may contain water, organic compounds and inorganic salts is converted to almost pure concentrated sulfuric acid by passing the acid through a Pauling plant and distilling the concentrated contaminated acid.

公开(公告)号：DK139756C

公开(公告)日：1979-09-17

申请号：DK23175

申请日：1975-01-24

Applicant: HOECHST AG

Inventor： TRONICH W ,  SPIETSCHKA E ,  SCHIESSLER S

IPC: C09B47/10

公开(公告)号：DK139270C

公开(公告)日：1979-06-25

申请号：DK699673

申请日：1973-12-21

Applicant: HOECHST AG

Inventor： SCHIESSLER S ,  SPIETSCHKA E ,  TRONICH W

IPC: C09B47/24 ,  C09B67/16 ,  C09B67/54 ,  C09B67/00

公开(公告)号：IN143503B

公开(公告)日：1977-12-10

申请号：IN1616CA1975

申请日：1975-08-19

Applicant: HOECHST AG

Inventor： SPIETSCHKA E ,  SCHIESSLER S ,  TRONICH W ,  ELINKMANN H

IPC: C09B67/20 ,  C09B47/04 ,  C09B47/08 ,  C09B67/22 ,  D06P1/16

公开(公告)号：BR7410194A

公开(公告)日：1976-06-08

申请号：BR1019474

申请日：1974-12-05

Applicant: HOECHST AG

Inventor： TRONICH W ,  SPIETSCHKA E ,  SCHIESSLER S

IPC: C09B67/20 ,  C09B67/16 ,  C09B67/26 ,  C09B67/50 ,  C09B47/04 ,  C09B67/00

Abstract: This invention relates to a process for the preparation of a very pure copper phthalocyanine pigment of the alpha -modification which comprises dissolving crude copper phthalocyanine in a 80 to 86% sulfuric acid isolating the copper phthalocyanine sulfate formed, hydrolizing the sulfate and grinding the copper phthalocyanine thus obtained in an aqueous-organic medium.

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.