| 摘要 |
<p>The process, for use in bonding polyurethane foam to steel sheets or panels, consists of (a) simultaneous applicns. through a double-kneaded applicator, to at least one of the surfaces to be joined, of an aq. emulsion of methacrylate copolymers of anionic type, one or more gelling agents and an organic or inorganic acid salt; (b) coagulating the polymer by gelling; (c) spontaneous removal of the water; and (d) gelling the polymer.</p> |
