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公开(公告)号：DK135382C
公开(公告)日：1977-10-03
申请号：DK28974
申请日：1974-01-18
Applicant: HOECHST AG
Inventor： HUNGER K , RIBKA J , WEINGARTEN F , RIEPER W
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.
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公开(公告)号：BR7400296D0
公开(公告)日：1974-08-22
申请号：BR29674
申请日：1974-01-16
Applicant: HOECHST AG
Abstract: A highly covering disazo pigment having the chemical constitution WHICH IS CHARACTERIZED BY A SPECIFIC SURFACE OF 12 - 30, PREFERABLY 15 TO 25, M2/G, A MAXIMUM OF THE GRAIN SIZE DISTRIBUTION OF BETWEEN 250 AND 500 NM AND A PROPORTION OF THESE GRAIN SIZES IN THE TOTAL DISTRIBUTION OF 35 - 65 PERCENT, PREFERABLY 45 - 60 PERCENT. This new pigment form is obtained by heating the pigment obtained after coupling with a solvent which is immiscible with water or miscible with water to a limited degree only to temperatures above 100 DEG C.
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公开(公告)号：DK143655C
公开(公告)日：1982-03-01
申请号：DK29774
申请日：1974-01-18
Applicant: HOECHST AG
Abstract: A highly covering disazo pigment having the chemical constitution WHICH IS CHARACTERIZED BY A SPECIFIC SURFACE OF 12 - 30, PREFERABLY 15 TO 25, M2/G, A MAXIMUM OF THE GRAIN SIZE DISTRIBUTION OF BETWEEN 250 AND 500 NM AND A PROPORTION OF THESE GRAIN SIZES IN THE TOTAL DISTRIBUTION OF 35 - 65 PERCENT, PREFERABLY 45 - 60 PERCENT. This new pigment form is obtained by heating the pigment obtained after coupling with a solvent which is immiscible with water or miscible with water to a limited degree only to temperatures above 100 DEG C.
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公开(公告)号：DK142917C
公开(公告)日：1981-09-28
申请号：DK30074
申请日：1974-01-18
Applicant: HOECHST AG
Inventor： RIBKA J , RIEPER W , SCHWERIN S
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.
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Patent Agency Ranking
公开(公告)号：DK135382B
公开(公告)日：1977-04-18
申请号：DK28974
申请日：1974-01-18
Applicant: HOECHST AG
Inventor： HUNGER K , RIBKA J , WEINGARTEN F , RIEPER W
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.
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公开(公告)号：BR7400304D0
公开(公告)日：1974-08-22
申请号：BR30474
申请日：1974-01-16
Applicant: HOECHST AG
Inventor： RIEPER W , SCHWERIN S , RIBKA J
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.
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