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    USE OF POLYURETHANE RESINS FOR AQUEOUS FILLER COMPOSITIONS
    2.
    发明专利
    USE OF POLYURETHANE RESINS FOR AQUEOUS FILLER COMPOSITIONS 未知

    公开(公告)号：ZA896305B

    公开(公告)日：1990-05-30

    申请号：ZA896305

    申请日：1989-08-18

    Applicant: HOECHST AG

    Inventor： SCHWAB MICHAEL ,  MICHAEL SCHWAB ,  WALZ GERD ,  GERD WALZ

    IPC: C08G18/08 ,  C08G18/12 ,  C08G18/28 ,  C08G18/65 ,  C09D175/00 ,  C09D175/04 ,  C09D ,  B05D

    Abstract: Use of a water-dispersible polymer as binder in an aqueous filler composition which may or may not comprise, in addition to other polymeric binders, crosslinking agents and the customary additives, wherein the water-dispersible polymer is a polyurethane resin which contains building blocks derived from (A) polyisocyanates, (B) polyols having an average molecular weight Mn of at least 400, (C) low-molecular polyols if desired and, (D) compounds containing at least two groups reactive toward isocyanate groups and at least one group capable of forming anions, and (E) compounds which are monofunctional or contain active hydrogen of variable reactivity, these building blocks being always positioned at the chain end fo the polyurethane resin, and optionally (F) compounds which are other than (B), (C), (D) and (E) and contain at least two groups reactive toward NCO groups. The crosslinked filler coatings obtainable therefrom are distinguished, inter alia, by improved stone-chip resistance at low temperatures and by good intercoat adhesion.

    POLYURETHANE DISPERSIONS
    4.
    发明专利
    POLYURETHANE DISPERSIONS 未知

    公开(公告)号：AU1939192A

    公开(公告)日：1993-01-07

    申请号：AU1939192

    申请日：1992-07-03

    Applicant: HOECHST AG

    Inventor： HEINZ-PETER KLEIN ,  MARKUS A. SCHAFHEUTLE ,  GERD WALZ

    IPC: C08G18/10 ,  C08F290/00 ,  C08F299/06 ,  C08G18/08 ,  C08G18/67 ,  C08L75/00 ,  C08L75/14 ,  C09D5/00 ,  C09D11/10 ,  C09D155/00 ,  C09D175/00 ,  C09D175/04 ,  C09D175/14 ,  C09J155/00 ,  C09J175/14

    Abstract: Polyurethane dispersions (I) are obtd. by radical polymerisation of polyurethane macromonomers (II) contg. COOH, PO3H or SO3H gps. (gps. X), lateral vinyl gps. and opt. terminal vinyl, OH, urethane thiourethane and/or urea gps.. More specifically (II) are obtd. (a) by polyaddition of polyhydroxy-polyethers, -polyesters or -polycarbonates, and polyhydroxycarboxylic acids, dihyroxyphosphonic acids or polyhyroxysulphonic acids and polyisocyanates, and monomers with at least 2 OH and at least one vinyl gp., to give (II) contg. gps. (X), OH gps. and lateral vinyl gps.; or (b) to give (II) contg. gps. (X), NCO gps. and lateral vinyl gps. (followed by reaction of the latter with amines, alcohols or thioalcohols); or (c) by reaction of the same starting materials followed by reaction with a monomer which contains a vinyl gp. and a gp. which reacts with NCO gps., together with prim. or sec. amines, alcohols or thioalcohols; or (d) by reaction of the same cpds. to give (II) contg. NCO gps. and lateral vinyl gps., followed by reaction with amino- or hydroxy-carboxylic or -sulphonic acids; the polyhydroxy-polyethers, -polyesters or -polycarbonates contain COOH, PO3H or SO3H gps. (X); radical polymerisation is carried out in an unsatd. comonomer (III) which serves as solvent, opt. in the presence of other unsatd. comonomers, or in a mixt. of water and inert solvent (w.r.t. NCO gps.), opt. in the presence of unsatd. comonomers, opt. with distn. of the solvent before or after polymerisation.

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