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    PROCESS FOR THE PREPARATION OF DYED POLYESTERS
    64.
    发明专利
    PROCESS FOR THE PREPARATION OF DYED POLYESTERS 未知

    公开(公告)号：IN145869B

    公开(公告)日：1979-01-06

    申请号：IN419CA1977

    申请日：1977-03-23

    Applicant: HOECHST AG

    Inventor： SPIETSCHKA E ,  GATTNER H ,  TROSTER H

    IPC: C08G63/12 ,  C08G63/00 ,  C08G63/68 ,  C08G63/685 ,  C08G63/78 ,  C08G45/14

    Abstract: When reacting a dyestuff having hydroxy, acyloxy, carboxy or carbalkoxy groups with a polyester derived from terephthalic and/or isophthalic acid and, per mol of dicarboxylic acid, about 0.75 to 1.5 mol of a low-molecular alkanetriol with primary alcohol groups (methylol groups) or, instead of said polyester, with the corresponding starting materials or precondensates, a polyester with chemically linked dyestuff units is obtained which is useful for dyeing plastics, especially polyolefins. The dyed plastic materials are heat resistant, even when containing fluorescent dyestuff units, transparent and uniformly dyed.

    68.
    发明专利
    未知

    公开(公告)号：BR7410246A

    公开(公告)日：1976-06-29

    申请号：BR1024674

    申请日：1974-12-06

    Applicant: HOECHST AG

    Inventor： PAPENFUHS T ,  SPIETSCHKA E ,  TROSTER H

    IPC: C09K11/06 ,  C08K5/00 ,  C08K5/20 ,  C08L1/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C09B57/08 ,  C09B67/00 ,  C09B67/20 ,  C09D5/22

    Abstract: A daylight fluorescent pigment based on condensation resins which contain a compound of the formula IN WHICH R1 is hydroxyalkyl of 1-8 carbon atoms or unsubstituted or substituted phenyl, carboxylic acid amide, cyano, nitro, sulfonic acid amide, alkylsulfone of 1-6 carbon atoms, acetylamino or unsubstituted or substituted benzoylamino or the triazolyl or benzimidazolyl radical, R2 is a straight-drained or branched alkylene radical of 1-8 carbon atoms which may contain as a bridging member between two alkylene moieties the phenylene or cyclohexylene radical or an oxygen or cycloalkylene and zis 1, 2 or 3. Compared with known pigment dyestuffs of the naphthalic acid imide series they have the advantage that they can be prepared with a dyestuff which is technically obtainable in an easy way. The daylight fluorescent pigments of this invention have a very good fastness to bleeding, a very high tinctorial strength, an improved fluorescence intensity and a very good brilliance. They are advantageously suited for the dyeing of lacquers and varnishes, printing pastes, inks, and plastic materials.

    70.
    发明专利
    未知

    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.

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