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    Thermosetting coating compsns. partic. for metal - comprises hydroxylated or epoxy! polymer and trimellitic acid and ester mixt., used as powder or soln.
    1.
    发明专利
    Thermosetting coating compsns. partic. for metal - comprises hydroxylated or epoxy! polymer and trimellitic acid and ester mixt., used as powder or soln. 未知

    公开(公告)号：DE2757533A1

    公开(公告)日：1979-07-05

    申请号：DE2757533

    申请日：1977-12-23

    Applicant: HOECHST AG

    Inventor： KRAFT KURT ,  SPRENGER WALTER ,  WALZ GERD DIPL PHYS DR ,  WIRTH THADDAEUS DIPL CHEM DR

    IPC: C09D167/00 ,  C09J167/00 ,  C09D3/64

    Abstract: Thermosetting coating compsn. comprises (A) oligomers and/or polymers contg. OH and/or epoxy gps. and (B) a mixt. of polycarboxylic acids contg. trimellitic acid. The mixt. (B) contains >=1 cpd. contg. ester groups and having formulae (I)-(III): In the formulate, R,R' and R" are opt. branched hydrocarbon gps. of valency 2-6, pref. 2, contg. 1-12, pref. 2-6C and opt. having up to 2 olefinic double bonds or contg. up to 3 ether bonds; x and y are 2-6, t is 1-5 and z and n are 0 or 1-5. The compsn. pref. contains as third component (c) a polymer of fluorinated vinyl monomers contg. is not >=2F, the ratio of A+B:C being 9:1-1:9, pref. 3:1-1:3. Used for coating a variety of substrates e.g. ceramics, wood, glass, concrete, plastics and esp. metals. The compsn. is highly reactive and can be applied as a powder or in soln. It cures at 120-200 degrees C pref. 120-180 degrees C within 30 mins. (cf. 180-200 degrees C for prior art compsns.) Compsns. contg. component (c) are partic. suitable for coil-coating. The compsn. is storage stable and (B) is soluble even in weakly polar solvent.

    Thermosetting coating compsns. partic. for metal - comprises hydroxylated or epoxy! polymer and trimellitic acid and ester mixt., used as powder or soln.
    2.
    发明专利
    Thermosetting coating compsns. partic. for metal - comprises hydroxylated or epoxy! polymer and trimellitic acid and ester mixt., used as powder or soln. 未知

    公开(公告)号：DE2707018A1

    公开(公告)日：1978-08-31

    申请号：DE2707018

    申请日：1977-02-18

    Applicant: HOECHST AG

    Inventor： KRAFT KURT ,  WALZ GERD DIPL PHYS DR ,  WIRTH THADDAEUS DIPL CHEM DR

    IPC: C09D167/00 ,  C09J167/00 ,  C09D3/64 ,  C09D3/58 ,  C09D5/08

    Abstract: Thermosetting coating compsn. comprises (A) oligomers and/or polymers contg. OH and/or epoxy gps. and (B) a mixt. of polycarboxylic acids contg. trimellitic acid. The mixt. (B) contains >=1 cpd. contg. ester groups and having formulae (I)-(III): In the formulate, R,R' and R" are opt. branched hydrocarbon gps. of valency 2-6, pref. 2, contg. 1-12, pref. 2-6C and opt. having up to 2 olefinic double bonds or contg. up to 3 ether bonds; x and y are 2-6, t is 1-5 and z and n are 0 or 1-5. The compsn. pref. contains as third component (c) a polymer of fluorinated vinyl monomers contg. is not >=2F, the ratio of A+B:C being 9:1-1:9, pref. 3:1-1:3. Used for coating a variety of substrates e.g. ceramics, wood, glass, concrete, plastics and esp. metals. The compsn. is highly reactive and can be applied as a powder or in soln. It cures at 120-200 degrees C pref. 120-180 degrees C within 30 mins. (cf. 180-200 degrees C for prior art compsns.) Compsns. contg. component (c) are partic. suitable for coil-coating. The compsn. is storage stable and (B) is soluble even in weakly polar solvent.

    Quick-hardening polymer mixt. coating powders or solns. - contain epoxy cpd. and poly:carboxylic acid units as acid, anhydride and/or ester gps.
    4.
    发明专利
    Quick-hardening polymer mixt. coating powders or solns. - contain epoxy cpd. and poly:carboxylic acid units as acid, anhydride and/or ester gps. 未知

    公开(公告)号：DE2754399A1

    公开(公告)日：1979-06-13

    申请号：DE2754399

    申请日：1977-12-07

    Applicant: HOECHST AG

    Inventor： KRAFT KURT ,  WALZ GERD DIPL PHYS DR ,  WIRTH THADDAEUS DIPL CHEM DR

    IPC: C08G59/42 ,  C08L63/00 ,  C08L67/00 ,  C09D3/58 ,  C09D3/66

    Abstract: Reactive, hardenable polymer mixt. contains (A) epoxy cpds. and (B) polycarboxylic acid units. (B) contains (a) a cpd. of formula (I) or (Ia): (where R1 is the residue of an OH gp.-contg. polymeric polymsn. and/or condensn. prod. polyester having OH-no. 20-300 or phenoplast having OH-no. 100-800; R2 is the residue of an at least tetrabasic carboxylic acid contg. an esterifiable COOH gp. in o- or peri-position; R5 is as R2 or is the residue of an at least dibasic carboxylic acid contg. an esterifiable COOH gp. in the o- or periposition) and/or (b) an at least tetrabasic cyclic carboxylic acid cpd. contg. two o- or peri-COOH gps. or one anhydride gp. together with at least one R1 gp. and/or (c) a cpd. (I) or (Ia) in which the anhydride gps. are replaced, at least partly, by free acid and/or ester gps., and/or (d) a cpd. (b) in which the anhydride gps. of the polycarboxylic acid cpds. are replaced, at least partly, by free acid- and/or ester gps. The mixts., as solns. or powders, may be used as coating compsns., e.g. as stovable lacquers, primers, top lacquers, 1-layer lacquers, shock-drying systems for coil-coating in lacquering food tins. The mixts. can also be used as laminates, as protective coatings, e.g. for articles exposed to aggressive media, weathering, solvents, heat, 2-component hot melt- and thermosetting adhesives; as binders, e.g. for textiles, and as moulded resins, casting resins, putties, foams and insulating lacquers. The mixts. are stable, have high reactivity, can be crosslinked at 20 degrees C, and can be used as powders which cause no environmental pollution in use. Powder lacquers may be hardened by stoving at 100-180 degrees C in 30 min.

    6.
    发明专利
    未知

    公开(公告)号：DE2556182A1

    公开(公告)日：1977-06-23

    申请号：DE2556182

    申请日：1975-12-13

    Applicant: HOECHST AG

    Inventor： KRAFT KURT ,  WALZ GERD DIPL PHYS DR

    IPC: C09D5/03 ,  C08G59/42 ,  C08G63/20 ,  C09D5/46 ,  C09D133/06 ,  C09D163/00 ,  C09D167/00 ,  C09D3/64 ,  C09D3/58 ,  C09D5/40

    Abstract: A highly-reactive powder resin composition suitable for use in the production of coatings comprising a mixture of (A) at least one polymer containing groups selected from hydroxyl and epoxy-groups, having a melt viscosity of 2 000 to 20 000 cP at 160 DEG C. and a melting range of from 45 DEG to 95 DEG C.; and (B) at least one compound of formula (I) wherein R represents an aliphatic hydrocarbon group- being substituted by an ester or a carboxy group or being interrupted by an O-ether linkage - R1 represents phenyl or naphthyl and y is an integer from 2 to 4 said component B having a melt viscosity of 50 to 15 000 cP at 160 DEG C. and a melting range of from 40 DEG to 250 DEG C.; the combination of A and B having a melt viscosity of from 500 to 20 000 cP at 160 DEG C., a stability of from 1 to 15 at 100 DEG C., a flow time of from 20 to 600 s at 160 DEG C., and a gel time of from 35 to 1,200 s at 160 DEG C. and an article coated with said composition.

    8.
    发明专利
    未知

    公开(公告)号：DE4215480A1

    公开(公告)日：1993-11-18

    申请号：DE4215480

    申请日：1992-05-11

    Applicant: HOECHST AG

    Inventor： WEHNER SUSANNE DIPL ING ,  KLIMA HEINZ ,  HOENEL MICHAEL DIPL CHEM DR ,  ZIEGLER PETER DIPL CHEM DR ,  WALZ GERD DIPL PHYS DR

    IPC: C08L63/00 ,  C08G59/28 ,  C09D5/44 ,  C09D175/00 ,  C09D175/04 ,  C25D13/06 ,  C09D175/12 ,  C09D163/00 ,  C07C271/10

    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.

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