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US 9,309,443 B2Granted
Liquid optical adhesive compositions
Assignee3M Innovative Properties Company
InventorsSerkan Yurt, Jason D. Clapper, Ross E. Behling, Christopher J. Campbell, Mark F. Ellis
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Abstract
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.
Claims30
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.
8 more elements
Dependencies are inferred from the claim text.