Ultraviolet-curable silicone-based releasing composition

Details Ultraviolet-curable silicone-based releasing composition Ultraviolet-curable silicone-based releasing composition

1998-06-26

2000-01-11

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 14, 522148, 522172, C08F 246

Patent

active

060136936

ABSTRACT:
Provided by the invention is an ultraviolet-curable silicone-based releasing agent suitable for use as a coating agent on the back surface of a pressure-sensitive adhesive tape and releasable protective sheet on a pressure-sensitive adhesive label with an advantage that the coating layer thereof is curable by ultraviolet irradiation in an atmosphere which is not completely free from oxygen having an inhibiting effect on the curing reaction of the coating layer contributing to cost reduction for the production of pressure-sensitive adhesive tapes and labels. The releasing composition comprises, in addition to a radical-polymerizable organopolysiloxane having (meth)acryloxyalkyl groups and a photopolymerization initiator, a tertiary amine compound such as isoamyl 4-dimethylamino benzoate and 2-ethylhexyl 4-dimethylamino benzoate in a limited amount.

REFERENCES:
patent: 4201808 (1980-05-01), Cully et al.
patent: 4849461 (1989-07-01), Lee et al.
patent: 5432208 (1995-07-01), Masuhara et al.

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