Ultraviolet Light Curable Epoxysilicone Paper Release Coatings

By Richard P. Eckberg and Karen D. Riding, General Electric Co. - RadTech Europe Conference 1989

Epoxy—functionalized polydimethylsiloxanes have been developed which, when combined with silicone—miscible iodonium photocatalysts, then coated onto release liners, function as ultraviolet—light—curable release agents for pressure—sensitive adhesives. The new UV cure silicone system has proven particularly useful for premium release applications versus acrylic adhesives, and on plastic film release liners. Polar modifications of the epoxysilicone molecule alter the release characteristics of these uv—crosslinked coatings and are a promising route to controlled release for the uv—cure epoxysilicone system.