Liquid optical adhesive compositions

摘要

The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a) Mw of 5 k to 30 k, a Tg<20° C.; b) a solvent monomer component; and a photoinitiator. The curable composition may be used as an adhesive in optical applications.

主权项

1. A curable composition comprising:
a) a solute (meth)acryolyl oligomer having a Mw of 5,000 to 30,000 and a Tg of <20° C. comprising
i. greater than 50 parts by weight of (meth)acrylate ester monomer units,ii. 10 to 49 parts by weight of hydroxyl-functional monomer units,iii. 1 to 10 parts by weight of monomer units having pendent acrylate groups,iv. 0 to 20 parts by weight of polar monomer units,v. 0 to 10 parts by weight of silane-functional monomer units, wherein the sum of the monomer units is 100 parts by weight; b) a diluent monomer component, and c) a photoinitiator, d) a thixotropic agent in amounts of 0.01 and 10 wt. % with respect to the total weight of curable composition; wherein the composition comprises no polyethylenically unsaturated monomer or other crosslinking agents.