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US 7,064,154 B2Granted
Radiation-curable composition for optical fiber coating materials
AssigneePPG Industries Ohio, Inc.
InventorsShengkui Hu, Alan B. Weissberg
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Abstract
Compositions for use in optical fiber coatings and optical fibers and optical fiber arrays using these coatings are disclosed, as are methods for making the same. The compositions comprise a combination of two different radiation curable urethane oligomers, and can further comprise one or more reactive monomers. One of the oligomers has at least three functional groups that can undergo radiation cure, and comprises a lactone modified polyol.
Claims16
A composition comprising:
- a. a first radiation curable urethane oligomer comprising at least three radiation curable functionalities;
- and
- b. a second radiation curable urethane oligomer different from the first radiation curable urethane, wherein the first radiation curable urethane oligomer comprises a diphenylmethane-containing polyol oligomer modified with a lactone.
A glass fiber comprising a secondary coating comprising:
- a. a first radiation curable urethane oligomer comprising four radiation curable functionalities;
- and
- b. a second radiation curable urethane oligomer different from the first radiation curable urethane, wherein the first radiation curable urethane oligomer comprises a lactone modified polyol.
Dependencies are inferred from the claim text.