Ultraviolet radiation-curable silicone release compositions with

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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549215, 528 15, 528 31, 528 25, 525474, 525479, 556445, 556451, 556462, 556450, C08F28300

Patent

active

045769990

ABSTRACT:
Epoxy- and/or acrylic-functional polysiloxanes are disclosed which, when combined with onium salt photoinitiating 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 adhesive 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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