| 摘要 |
<p>This invention relates to organopolysiloxane compositions and, more particularly, to such compositions that can be cured to produce pressure-sensitive adhesives. While the hydrosilation reaction of alkenylsiloxanes with hydrosilanes in the presence of a suitable catalyst has been used to prepare potting, molding, and elastomeric products as well as materials useful for providing substrates with a release surface, the reaction has not been used to a great extent to provide pressure-sensitve adhesives. The present invention provides pressure-sensitive adhesive composition comprising (a) a benzene soluble, resinous copolymer, (b) a diorganoalkenylsiloxy endblocked polydiorganosiloxane, (c) a diorganohydrogensiloxy endblocked polydiorganosiloxane, (d) a crosslinking agent, and (e) a hydrosilation catalyst in an amount sufficient to effect curing of the composition. The major advantage of the present invention is that solvent need not be used to apply the composition. This non-use of solvent results in savings of material, time, and energy, and reduction in health and safety hazards.</p> |
