CURABLE COATING AGENTS AND PROCESS FOR THE PRODUCTION OF SCRATCH-RESISTANT COATINGS ON PLASTICS

    公开(公告)号:CA1142682A

    公开(公告)日:1983-03-08

    申请号:CA362963

    申请日:1980-10-22

    Applicant: BASF AG

    Abstract: Curable coating agents, a process for the production of scratch-resistant coatings on plastics, and articles coated by this process. The coating agents are polycondensates of a reaction product, containing two or more carbon-carbon double bonds and one or more hydroxyl or alkoxy groups per molecule, obtained from an olefinically unsaturated silane containing 2 or more hydroxyl or alkoxy groups, whose olefinically unsaturated organic radical is bonded via a C-Si bond, and a hydroxylcontaining .beta.,.beta.-olefinically unsaturated monomer, an olefinically unsaturated silane of the general formula R1-Si(OR2)3 where R1 is a vinyl radical or an alkyl acrylate or alkyl methacrylate radical bonded to the Si atom via a C-Si bond and R2 is hydrogen or a saturated hydrocarbon radical, and a saturated silane of the general formula where R3 and R4 are saturated or aromatic hydrocarbonradicals, with or without an epoxide-containing silane which also contains hydroxyl or alkoxy groups; the polycondensate may additionally contain an olefinically unsaturated reaction product of acrylic or methacrylic acid and a polyalcohol or polyether-ol. The costing agent is used to produce scratchresistant coatings on the surface of plastics.

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