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US 2007/0191506 A1Published application
Curable compositions for optical articles
Assignee3M Innovative Properties Company
InventorsYing-Yuh Lu, Jianhui Xia, Peter Olofson, Ming Cheng, Mark Ellis, Babu Gaddam
Life of this patent
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Abstract
A curable composition is provided comprising an oligomer having a plurality of pendent and/or terminal ethylenically unsaturated, free-radically polymerizable functional groups, a free-radically polymerizable crosslinking agent, and/or a diluent monomer, and a photoinitiator. The composition, when cured, is non-yellowing, exhibits low shrinkage and low birefringence making it suitable for many optical applications such as optical lenses, optical fibers, prisms, light guides, optical adhesives, and optical films.
Claims24
A curable composition comprising:
- a) 50 to 99 parts by weight of a (meth)acryloyl oligomer having a plurality of pendent, free-radically polymerizable functional groups and a Tg of ≧20° C.;
- b) 1 to 50 parts by weight of a free-radically polymerizable crosslinking agent and/or a diluent monomer, and
- c) 0.001 to 5 parts by weight of a photoinitiator, based on 100 parts by weight of a) and b).
Dependencies are inferred from the claim text.