公开(公告)号：BR7103135D0

公开(公告)日：1973-04-12

申请号：BR313571

申请日：1971-05-21

Applicant: HOECHST AG

Inventor： SPIETSCHKA E ,  HOHN J ,  TROSTER H

IPC: C07D493/06 ,  C09K11/06

公开(公告)号：BR6911244D0

公开(公告)日：1973-02-27

申请号：BR21124469

申请日：1969-08-01

Applicant: HOECHST AG

Inventor： SPIETSCHKA E ,  RENTEL M

IPC: C09B11/12 ,  C09B69/06

公开(公告)号：DK145501B

公开(公告)日：1982-11-29

申请号：DK699573

申请日：1973-12-21

Applicant: HOECHST AG

Inventor： SPIETSCHKA E ,  SCHIESSLER S ,  TRONICH W

IPC: C09B67/20 ,  C09B67/14 ,  C09B67/16

Abstract: A process for the preparation of highly pure organic pigments which comprises converting organic dyestuffs having various degrees of purity into dyestuff salts capable of being isolated by means of suitable acids which dissolve the impurities contained in the dyestuff, separating them from the acid, recovering the dyestuffs in pure form from the dyestuff salts by the action of water and subjecting the isolated dyestuff in aqueous organic or aqueous-organic medium to a mechanical fine dispersion. By this process the dyestuff formed by the decomposition of the dyestuff sulfate is obtained in highly pure form and can extremely well be brought into a finely dispersed form so that it can be brought into pigment form already by short-time grinding. During the preparation and isolation of the dyestuff sulfate the sulfuric acid is obtained in such a high concentration that it can be regenerated in an economical manner and any ecological charge is avoided.

公开(公告)号：DK138233C

公开(公告)日：1979-01-15

申请号：DK694973

申请日：1973-12-20

Applicant: HOECHST AG

Inventor： SPIETSCHKA E ,  SCHIESSLER S ,  TRONICH W

IPC: C09B67/16 ,  C09B67/50 ,  C09B67/54 ,  C09B67/00

Abstract: A process for preparing very pure copper phthalocyanine pigments of the alpha -modification, wherein substituted or unsubstituted copper phthalocyanines having different degrees of purity are converted into copper phthalocyanine salts capable of being isolated, with the aid of suitable acids which dissolve the impurities contained in the dyestuff, wherein these salts are separated from the acid, the copper phthalocyanines of the alpha -modification are set free in a pure form from the copper phthalocyanine salts by the action of water and wherein the isolated copper phthalocyanine is subject in an aqueous suspension to a mechanical fine division. This process yields copper phthalocyanines of the alpha -modification in a very pure form without causing problems with respect to the waste water.

公开(公告)号：DK138233B

公开(公告)日：1978-07-31

申请号：DK694973

申请日：1973-12-20

Applicant: HOECHST AG

Inventor： SPIETSCHKA E ,  SCHIESSLER S ,  TRONICH W

IPC: C09B67/16 ,  C09B67/50 ,  C09B67/54 ,  C09B67/00 ,  C09B47/08

Abstract: A process for preparing very pure copper phthalocyanine pigments of the alpha -modification, wherein substituted or unsubstituted copper phthalocyanines having different degrees of purity are converted into copper phthalocyanine salts capable of being isolated, with the aid of suitable acids which dissolve the impurities contained in the dyestuff, wherein these salts are separated from the acid, the copper phthalocyanines of the alpha -modification are set free in a pure form from the copper phthalocyanine salts by the action of water and wherein the isolated copper phthalocyanine is subject in an aqueous suspension to a mechanical fine division. This process yields copper phthalocyanines of the alpha -modification in a very pure form without causing problems with respect to the waste water.

公开(公告)号：IN143822B

公开(公告)日：1978-02-11

申请号：IN1592CA1975

申请日：1975-08-14

Applicant: HOECHST AG

Inventor： ISCHE F ,  SPIETSCHKA E

IPC: C09B67/16 ,  C09B67/54 ,  C09B47/10 ,  C08F45/66 ,  C08F47/24

Abstract: Polyhalo copper phthalocyanines are purified in concentrated sulfuric acid under addition of peroxo compounds including addition compounds of hydrogen peroxide. The products are useful as pigments having very pure green shades and good fastness properties.

公开(公告)号：IN143112B

公开(公告)日：1977-10-01

申请号：IN828CA1975

申请日：1975-04-25

Applicant: HOECHST AG

Inventor： SCHIEBLER S ,  ELINKMANN H ,  SPIETSCHKA E

IPC: C09B67/12 ,  C09B47/08

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：BR7606328A

公开(公告)日：1977-05-31

申请号：BR7606328

申请日：1976-09-23

Applicant: HOECHST AG

Inventor： SPIETSCHKA E ,  KIRSCH A ,  FUCHS O

IPC: C07B61/00 ,  B01J27/00 ,  B01J31/00 ,  B01J31/04 ,  C07C67/00 ,  C07C227/00 ,  C07C227/08 ,  C07C227/16 ,  C07C227/18 ,  C07C229/62 ,  C07C101/68

Abstract: 2,5-Diarylamino terephthalates are obtained in good yields and excellent purity when the aromatic nitro compound used for oxidizing the corresponding dihydro-2,5-diarylamino terephthalate contains the aromatic radical of said diarylamino groups, i.e. when the amine formed during the oxidation is that from which said diarylamino groups device. The products yield very pure quinacridone pigments and allow the synthesis of only one isomer of substituted quinacridones.

公开(公告)号：DK371075A

公开(公告)日：1976-02-18

申请号：DK371075

申请日：1975-08-15

Applicant: HOECHST AG

Inventor： ISCHE F ,  SPIETSCHKA E

IPC: C09B47/10 ,  C09B67/16 ,  C09B67/54 ,  C09B

Abstract: Polyhalo copper phthalocyanines are purified in concentrated sulfuric acid under addition of peroxo compounds including addition compounds of hydrogen peroxide. The products are useful as pigments having very pure green shades and good fastness properties.

公开(公告)号：BR7500510A

公开(公告)日：1975-11-11

申请号：BR7500510

申请日：1975-01-24

Applicant: HOECHST AG

Inventor： TRONICH W ,  SPIETSCHKA E ,  SCHIESSLER S

IPC: C09B47/10