Coated optical fibers having a reduced content of extractable an

Details Coated optical fibers having a reduced content of extractable an Coated optical fibers having a reduced content of extractable an

1996-10-31

1998-04-28

Palmer, Phan T. H.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 44, 522 79, 522 90, 522 96, 385123, 385128, 385145, 428378, 428392, C08J 704, G02B 602

Patent

active

057445141

ABSTRACT:
Coated optical fibers with radiation-curable coatings which include mercaptofunctional oligomers are disclosed. Specifically, the coatings may comprise the cured reaction products of mercapto-terminated urethane oligomers of number average molecular weight as determined by gel permeation chromatography (GPC) of at least about 3,000 daltons, particularly in combination with one or more (meth)acrylate-terminated urethane oligomers; monomer diluents; and optional silane adhesion promoter, photoinitiator and stabilizers. The coatings, when cured, exhibit a percent extractables content, as obtained by Soxhlet extraction, of no more than about 15%, and preferably of no more than about 8%, and a volatiles content, as obtained by thermogravimetric analysis, of less than about 7%, and preferably less than about 3%. Processes for preparing such coated optical fibers and the coatings per se are also disclosed.

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