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    31.
    发明专利
    未知

    公开(公告)号：ES2080556T3

    公开(公告)日：1996-02-01

    申请号：ES93107304

    申请日：1993-05-05

    Applicant: HOECHST AG

    Inventor： WEHNER SUSANNE ,  KLIMA HEINZ ,  HONEL 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.

    32.
    发明专利
    未知

    公开(公告)号：AT131512T

    公开(公告)日：1995-12-15

    申请号：AT93107304

    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.

    34.
    发明专利
    未知

    公开(公告)号：AT109166T

    公开(公告)日：1994-08-15

    申请号：AT89105014

    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.

    35.
    发明专利
    未知

    公开(公告)号：AT107324T

    公开(公告)日：1994-07-15

    申请号：AT88112532

    申请日：1988-08-02

    Applicant: HOECHST AG

    Inventor： HOENEL MICHAEL DR ,  ZIEGLER PETER DR ,  FOEDDE HARTMUT

    IPC: C08G18/10 ,  C08G18/58 ,  C08G83/00 ,  C08G85/00 ,  C09D5/44

    Abstract: Curable compounds carrying basic nitrogen groups and essentially comprising structural units derived from A) a compound containing on average at least one terminal 2-oxo-1,3-dioxolane group per molecule, with B) a disecondary amine containing hydroxyl groups in the beta -position to the secondary amino groups, it also being possible for this amine to contain blocked primary amino groups, and optionally C) a bifunctional amine containing at least one free primary amino group and optionally at least one secondary amino group, are used, in particular, in surface coating preparations, especially in electrodeposition coating compositions. The coatings obtainable using these compositions have, in particular optimised interlayer adhesion.

    36.
    发明专利
    未知

    公开(公告)号：DE3820300A1

    公开(公告)日：1990-02-08

    申请号：DE3820300

    申请日：1988-06-15

    Applicant: HOECHST AG

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

    IPC: C08G73/00 ,  C08G18/08 ,  C08G18/64 ,  C08G18/71 ,  C08G18/80 ,  C08G18/83 ,  C08G71/04 ,  C08J3/20 ,  C09D5/44 ,  C09D17/00

    Abstract: The invention relates to paste resins containing (a) quaternary ammonium groups, (b) OH groups, (c) isocyanate radicals and (d) groups of the formula (I) in which R to R , independently of one another are hydrogen or a hydrocarbon radical having 1 to 10 carbon atoms, and X is hydroxyl or an isocyanate radical, the mean molecular weight (Mn) of these paste resins being from 500 to 10000. The invention furthermore relates to the preparation of these paste resins, to their use for pigment pastes and to these pigment pastes. water-thinable surface coatings, in particular electrodeposition coatings, which contain the pigment pastes according to the invention give defect-free surfaces and comparable coating thicknesses, even on different substrates.

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