| 摘要 |
<p>The adhesive bonding of synthetic resin substrates and particularly polyvinyl chloride is described employing shelf-stable, catalytically curable compositions including (A) at least one polymerizable monomer from the group including styrene, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, hexyl methacrylate, and ethyl hexyl methacrylate, and the like, including mixtures of these monomers and partially polymerized syrups of one or more of them; (B) an organic polyisocyanate, preferably a diisocyanate or isocyanate functional urethane capped with a hydroxy functional monomer from the group including hydroxyethyl methacrylate, beta -hydroxypropyl methacrylate, allyl alcohol, vinyl alcohol and the like; (C) the reducing component of a redox catalyst polymerization system such as a tertiary amine, a metallic salt or preferably, N,N-diisopropanol-p-toluidine and, optionally, (D), a polymerizable monomer or polymer; the proportions of (A), (B), (C) and (D) in the composition being about 10 to 90% (A), about 90 to 10% (B), about 0.04 to 4% (C) and, optionally, about 0 to about 20% of (D); said composition being adapted to cure rapidly at room temperature on contact pressure alone to produce an environmentally stable bond between synthetic substrates by the addition of the oxidizing component of the redox catalyst system, such as benzoyl peroxide, to the catalytically curable composition or by the application of that composition over a coating of a lacquer containing the oxidizing component previously applied to the substrate.</p> |
