Patent ID: 11891550
Assignee: HENKEL AG & CO. KGAA
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A UV-curable silicone pressure sensitive adhesive composition comprising a mixture of:
(a) 95 to 99.999 wt % of a reaction product in an organic solvent of:
(i) methacryloxypropyldimethoxy terminated polydimethylsiloxane polymer;
(ii) hydroxyl functional silicone resin; and
(iii) a terminal or pendant (meth)acrylate or methoxyl functionalized polydimethylsiloxane polymer or oligomer;
(iv) an acid or a base catalyst that has a pKa value equal to or less than −6 or equal to or greater than 15;

(b) 0.001 to 5 wt % of a radical initiator; and
(c) optionally, a silicone resin or a polydimethylsiloxane polymer or oligomer; and
wherein the cured adhesive has a transmittance, measured in accordance with ASTM E903 at 500 nm, of greater than 90%; and
wherein the cured adhesive has a T-peel adhesion of greater than 15 oz/in, measured in accordance with ASTM D1876, between PET substrates; and 180 peel adhesion greater than 25 oz/in, measured in accordance with PSTC 101, between PET and stainless steel panel.