Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Reexamination Certificate
2005-04-05
2005-04-05
Berman, Susan (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
C522S148000, C528S033000, C428S048000, C428S447000
Reexamination Certificate
active
06875795
ABSTRACT:
The invention provides a silicone composition curable by ultraviolet irradiation to give a cured film on a substrate surface exhibiting surface releasability against sticky surfaces. Advantageously, peeling works of a sticky surface from the cured surface of the inventive composition can be carried out with no or little generation of peeling noises which deteriolate the working environment. The composition comprises three different types of organopolysiloxane compounds of which the first is a so-called MQ siloxane, the second is a linear or cyclic diorganopolysiloxane having epoxy-containing substituents on the silicon atoms other than the chain terminal silicon atoms and the third is a straight or branched linear organopolysiloxane compound substituted by an epoxy-containing substituent on each of the chain terminal silicon atoms in a specified weight proportion of these three. The composition contains an onium salt compound as a photoreaction initiator to promote the ultraviolet-induced curing.
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Berman Susan
Millen White Zelano & Branigan P.C.
Shin-Etsu Chemical Co. , Ltd.
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