公开(公告)号：AU6459874A

公开(公告)日：1975-07-17

申请号：AU6459874

申请日：1974-01-17

Applicant: HOECHST AG

Inventor： RIBKA JOACHIM ,  RIEPER WOLFGANG

IPC: C09D7/00 ,  C09B43/00 ,  C09B67/54 ,  C09D7/12 ,  C09B35/10

Abstract: A process for the purification of azo pigments, wherein the crude pigment is stirred for some time in an aqueous alkaline suspension in a pH range from 9 to 12, preferably from 11 to 12, at temperatures between 20 DEG to 80 DEG C and subsequently the crude pigment is filtered off and washed neutral. The pigments treated by this process show a clearer and more brilliant shade and are faster to bleeding when incorporated, for example, into a thermoplastic material than the untreated pigments.

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：AU6459474A

公开(公告)日：1975-07-17

申请号：AU6459474

申请日：1974-01-17

Applicant: HOECHST AG

Inventor： RIBKA JOACHIM ,  RIEPER WOLFGANG ,  SCHWERIN SIEGFRIED

IPC: C09D7/00 ,  C09B33/153 ,  C09B35/08 ,  C09B67/10 ,  C09D7/12 ,  C09B35/10 ,  C08J1/08

Abstract: A form of the disazo pigment C.I. 20040 having the formula 30% of +TR IS SHOWN HAVING IMPROVED COVERING POWER, IMPROVED FLUIDITY IN LACQUER SYSTEMS AND HIGH LUSTER, WHICH IS CHARACTERIZED BY A SPECIFIC SURFACE OF 10 - 20, PREFERABLY 12 - 17 M2/G AND A MAXIMUM IN GRAIN DIAMETER DISTRIBUTION BETWEEN 500 AND 1000 NM, AT LEAST 30 % OF ALL GRAINS HAVING A DIAMETER OF FROM 500 TO 1000 NM AND LESS THAN 25% OF ALL GRAINS HAVING A DIAMETER OR MORE THAN 1000 NM. This new pigment is obtained by isolating the pigment, after coupling, by stirring it out with alkali and, after having filtered it off and washed until neutrality, heating it to temperatures above 100 DEG C with an organic solvent which is immiscible with water or miscible with water to a limited degree only.

公开(公告)号：CA968791A

公开(公告)日：1975-06-03

申请号：CA147839

申请日：1972-07-25

Applicant: HOECHST AG

Inventor： DIETZ ERICH ,  PRETZER WOLFGANG ,  SCHILLING KARL ,  RIBKA JOACHIM ,  KUNSTMANN WALTER

IPC: C09B67/00

公开(公告)号：CA955590A

公开(公告)日：1974-10-01

申请号：CA136165

申请日：1972-03-03

Applicant: HOECHST AG

Inventor： LAUBERT GUENTER ,  RIBKA JOACHIM ,  STECKELBERG WILLI

IPC: C09B67/00

公开(公告)号：CA940933A

公开(公告)日：1974-01-29

申请号：CA125839

申请日：1971-10-22

Applicant: HOECHST AG

Inventor： JUNKER PETER ,  MEES BERNHARD ,  RIBKA JOACHIM

IPC: C07D235/26

公开(公告)号：AU3485471A

公开(公告)日：1973-05-03

申请号：AU3485471

申请日：1971-10-21

Applicant: HOECHST AG

Inventor： JUNKER PETER ,  MEES BERNHARD ,  RIBKA JOACHIM

IPC: C07D235/26 ,  C07D49/38

公开(公告)号：AU3289471A

公开(公告)日：1973-03-08

申请号：AU3289471

申请日：1971-08-31

Applicant: HOECHST AG

Inventor： BETZEL CLEMENS ,  RIBKA JOACHIM ,  WORFEL ERHARD

IPC: C08K5/3447 ,  C09B29/20

公开(公告)号：CA896545A

公开(公告)日：1972-03-28

申请号：CA896545D

Applicant: HOECHST AG

Inventor： DIETZ ERICH ,  RIBKA JOACHIM ,  STECKELBERG WILLI

公开(公告)号：CA724143A

公开(公告)日：1965-12-21

申请号：CA724143D

Applicant: HOECHST AG

Inventor： RIBKA JOACHIM