Ultraviolet radiation-curable silicone release compositions...

Details Ultraviolet radiation-curable silicone release compositions... Ultraviolet radiation-curable silicone release compositions...

C - Chemistry, Metallurgy

08

G

402/24, 204/91.3

C08G 77/44 (2006.01) C08G 77/20 (2006.01) C08G 77/40 (1985.01)

Patent

CA 1253285

ULTRAVIOLET RADIATION-CURABLE SILICONE RELEASE COMPOSITIONS WITH EPOXY AND/OR ACRYLIC FUNCTIONALITY ABSTRACT OF THE DISCLOSURE Epoxy- and/or acrylic-functional polysiloxanes are disclosed which, when combined with onium salt photo-initiating catalysts or free-radical photoinitiating catalysts, or both, form ultraviolet radiation-curable release coating compositions which render surfaces non-adherent to other surfaces which would normally adhere thereto. The compositions will cure to such an abhesive state upon brief exposure to ultraviolet radiation. Cure and substrate adhesion may be enhanced by the addition of epoxy monomers where onium salt photocatalysts are included. Preparation of the polymers, coating compositions, catalysts and catalyst blends are also disclosed.

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