Ultraviolet curable outer coatings for optical fiber

Details Ultraviolet curable outer coatings for optical fiber Ultraviolet curable outer coatings for optical fiber

1985-10-29

1988-05-03

Pertilla, Theodore E.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

350 961, 427 12, 427 541, 427165, 4274072, 428392, 522103, 522168, B32B 2700, D02G 300

Patent

active

047419580

ABSTRACT:
Buffer-coated and overcoated optical glass fiber is disclosed in which the topcoat has the high strength and high tensile modulus combined with good elongation and solvent resistance associated with extruded jacket coatings, but which is applied by ordinary coating procedures and cured by exposure to ultraviolet radiation. The coating compositions which enable this to be achieved comprise an ultraviolet curable coating composition comprising, based on total reactive components, from about 60% up to about 85% of a diepoxide polyacrylate combined with at least about 15% of an monacrylate-functional monomer having a glass transition temperature below 0.degree. C. to provide desired coating viscosity. The diepoxide is a diglycidyl ether of a bisphenol having a molecular weight in the range of about 560 to about 2000 and contains at least 1.8 oxirane groups per molecule, substantially all of these oxirane groups being consumed in the polyacrylate.

REFERENCES:
patent: 4014771 (1977-03-01), Rosenkranz et al.
patent: 4025692 (1977-05-01), Yamagishi et al.
patent: 4522465 (1985-06-01), Bishop et al.

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