Photocurable dicing die bonding tape
View Patent ↗A pressure sensitive adhesive comprising (A) pressure sensitive adhesive polymers having pendant carbon-carbon unsaturation and (B) hydrophobic polymers terminated with carbon-carbon unsaturation. In one embodiment the hydrophobic polymers are vinyl terminated polydimethoxyl siloxane polymers and/or vinyl terminated fluoropolymers reduces the interaction of the pressure sensitive adhesive with adherends and provides excellent release of the pressure sensitive adhesive after cure.
1. A pressure sensitive adhesive composition comprising:
(A) pressure sensitive adhesive polymers having pendant carbon-carbon unsaturation, and
(B) hydrophobic polymers terminated with carbon-carbon unsaturation.
2. The pressure sensitive adhesive composition of claim 1 further comprising a polyisocyanate in an amount effective to partially crosslink the (A) and (B) polymers of the composition.
3. The pressure sensitive adhesive composition of claim 2 in which the polyisocyanate is selected from the group consisting of diisophorone diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, and 1,5-naphthalene diisocyanate.