Release film
OwnerDavid Edward Higginsinventor
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Abstract
A release film has a polymeric film substrate and a release layer formed from a release composition containing a mixture of a curable silicone resin and a curable polymer. The curable polymer is preferably an ethylenically unsaturated polyurethane resin. The film substrate is preferably polyethylene terephthalate.
Claims3
A release film comprising a polymeric film substrate having on at least one surface thereof a release layer formed from a release composition comprising a mixture of a curable silicone resin comprising a vinyl containing silicone polymer with 80 to 400 vinyl groups and an Si--H containing polymer with 5 to 30 monomer units wherein the ratio of vinyl groups to Si--H groups is in a range of 0.4 to 2.5:1 and a curable polyurethane resin comprising at least one ethylenically unsaturated group.
Dependencies are inferred from the claim text.