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    11.
    发明专利
    未知

    公开(公告)号：DE3825584A1

    公开(公告)日：1990-02-01

    申请号：DE3825584

    申请日：1988-07-28

    Applicant: HOECHST AG

    Inventor： HOENEL MICHAEL DR ,  ZIEGLER PETER DR ,  SPRENGER WALTER ,  WENDT WOLFGANG

    IPC: C08G18/58 ,  C08G18/71 ,  C08G18/80 ,  C08G59/14 ,  C08G59/50 ,  C09D5/44 ,  C09D17/00

    Abstract: The invention relates to paste resins based on epoxide compounds, containing (a) specific quaternary ammonium groups, (b) OH groups and (c) isocyanate radicals bonded to the epoxide compound, of which at least 10 mol% are derived from a long-chain, monofunctional isocyanate having at least 8 carbon atoms, the mean molecular weight (Mn) of these paste resins being 500 to 10000. … In addition, the invention relates to the preparation of these paste resins, to their use for pigment pastes and to these pigment pastes. Water-thinnable paints, in particular electrodeposition paints, which contain the pigment pastes according to the invention give defect-free surfaces and comparable coating thicknesses even on different substrates.

    12.
    发明专利
    未知

    公开(公告)号：DE3809695A1

    公开(公告)日：1989-10-12

    申请号：DE3809695

    申请日：1988-03-23

    Applicant: HOECHST AG

    Inventor： HOENEL MICHAEL DR ,  FINKE MANFRED DR ,  WALZ GERD DR ,  ZIEGLER PETER DR

    IPC: C08G18/32 ,  C08G18/38 ,  C08G18/64 ,  C08G18/80 ,  C09D5/44 ,  C09D175/00 ,  C09D175/04

    Abstract: Curing agents (A) for isocyanate-curable resins (B) which have an amine number of from 20 to 150 mg of KOH/g, a maximum OH number of 20 mg KOH/g and contain, per molecule, at least two capped isocyanate groups which are reactive under the curing conditions, are obtained by reacting A) an amine which contains at least one ss-hydroxyalkyl group per molecule, as an OH number of from 100 to 1200 mg KOH/g and an amine number of from 100 to 1200 mg of KOH/g and optionally also contains NHCO groups, optionally blended with another OH- and/or NH-functional compound, with B) a partially capped polyisocyanate, optionally blended with an at least bifunctional, OH- and/or NH-reactive compound. These curing agents, if necessary after neutralisation, are readily dispersible in aqueous systems and frequently have a stability-increasing action in water-borne paint formulations.

    17.
    发明专利
    未知

    公开(公告)号：ES2094726T3

    公开(公告)日：1997-02-01

    申请号：ES89113521

    申请日：1989-07-22

    Applicant: HOECHST AG

    Inventor： HONEL MICHAEL DR ,  ZIEGLER PETER DR ,  SPRENGER WALTER ,  WENDT WOLFGANG

    IPC: C08G18/58 ,  C08G18/71 ,  C08G18/80 ,  C08G59/14 ,  C08G59/50 ,  C09D5/44 ,  C09D17/00

    Abstract: The invention relates to paste resins based on epoxide compounds, containing (a) specific quaternary ammonium groups, (b) OH groups and (c) isocyanate radicals bonded to the epoxide compound, of which at least 10 mol% are derived from a long-chain, monofunctional isocyanate having at least 8 carbon atoms, the mean molecular weight (Mn) of these paste resins being 500 to 10000. … In addition, the invention relates to the preparation of these paste resins, to their use for pigment pastes and to these pigment pastes. Water-thinnable paints, in particular electrodeposition paints, which contain the pigment pastes according to the invention give defect-free surfaces and comparable coating thicknesses even on different substrates.

    18.
    发明专利
    未知

    公开(公告)号：DE59301142D1

    公开(公告)日：1996-01-25

    申请号：DE59301142

    申请日：1993-05-05

    Applicant: HOECHST AG

    Inventor： WEHNER SUSANNE ,  KLIMA HEINZ ,  HOENEL MICHAEL DR ,  ZIEGLER PETER DR ,  WALZ GERD DR

    IPC: C08L63/00 ,  C08G59/28 ,  C09D5/44 ,  C09D175/00 ,  C09D175/04 ,  C25D13/06

    Abstract: Electrocoating bath containing a urethane of the formula R1-NHCOO-R2 where R1 is alkyl or a group of the formula B1-NH-B2-[X-B3]n-, R2 is a group of the formulae -(C2H4O)y-R1 and -(C3H7O) y-R or of the formula R is C1-C18-alkyl, Y is from zero to 4, B1 is hydrogen, alkyl or a group of the formula -COOR2, B2 and B3 can be identical or different and each is C2-C14-alkylene, n is an integer from 0 to 5, preferably from 0 to 2, X is -O-, -S-, -NH- or @N-(C1-C4)-alkyl, R3 is hydrogen or alkyl, alkenyl, hydroxyalkyl, phenyl or alkylphenyl, R4 and R5 can be identical or different and each is hydrogen or C1-C4-alkyl, and A is a direct bond or one of the groups -O-, -CH2O- or -CH2OCO-. The presence of these urethanes in the electrocoating bath reduces the number of surface defects in galvanised surfaces.

    20.
    发明专利
    未知

    公开(公告)号：DE58908087D1

    公开(公告)日：1994-09-01

    申请号：DE58908087

    申请日：1989-03-21

    Applicant: HOECHST AG

    Inventor： HOENEL MICHAEL DR ,  FINKE MANFRED DR ,  WALZ GERD DR ,  ZIEGLER PETER DR

    IPC: C08G18/32 ,  C08G18/38 ,  C08G18/64 ,  C08G18/80 ,  C09D5/44 ,  C09D175/00 ,  C09D175/04

    Abstract: Curing agents (A) for isocyanate-curable resins (B) which have an amine number of from 20 to 150 mg of KOH/g, a maximum OH number of 20 mg KOH/g and contain, per molecule, at least two capped isocyanate groups which are reactive under the curing conditions, are obtained by reacting A) an amine which contains at least one ss-hydroxyalkyl group per molecule, as an OH number of from 100 to 1200 mg KOH/g and an amine number of from 100 to 1200 mg of KOH/g and optionally also contains NHCO groups, optionally blended with another OH- and/or NH-functional compound, with B) a partially capped polyisocyanate, optionally blended with an at least bifunctional, OH- and/or NH-reactive compound. These curing agents, if necessary after neutralisation, are readily dispersible in aqueous systems and frequently have a stability-increasing action in water-borne paint formulations.

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