RADIATION-CURABLE MERCAPTOALKYLVINYL POLYDIOGANOSILOXANES

摘要

Certain polydiorganosiloxane compositions bearing mercaptoalkyl radicals and vinyl radicals are disclosed which cure in the presence of radiation such as ultraviolet light. The compositions consist essentially of a mixture of a triorganosiloxane-endblocked polydiorganosiloxane fluid in which from 1 to 5 percent of the organic radicals are mercaptoalkyl radicals and a methylvinylpolysiloxane. The compositions may be applied to a substrate such as paper and exposed to radiation to prepare a coated substrate that provides premium release of aggressive acrylic adhesives.