| 摘要 |
<p>A process for coating a substrate which comprises applying to the substrate an aqueous emulsion containing: (1) A diorganopolysiloxane having terminal SiC-bonded vinyl groups; (2) An organopolysiloxane containing at least three Si-bonded hydrogen atoms per molecule; (3) A catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic multiple bond; and if desired, (4) An agent which delays or retards the addition at room temperature; and (5) A thickening agent, which may be mixed with or added separately to the emulsion, and prior to cross-linking the organopolysiloxane, applying separately or together with one or more of the constituents (1) through (5); (6) A vinyl-containing trimethylsiloxy end-blocked diorganopolysiloxane in which the vinyl group is bonded to from 10 to 50 percent of the number of the silicon atoms of the diorganopolysiloxane units, and the other organic radicals are free of aliphatic multiple bonds; (7) An organosilicon adhesive compound; and (8) At least one aqueous dispersion of a polymer selected from the group consisting of ethylene, vinyl acetate, acrylic acid esters, and copolymers containing at least two of these monomers and thereafter crosslinking the coating.</p> |
