Dsm IP Assets B.v.

Wendell Wayne Cattron

Edward Joseph Murphy

John Monroe Zimmerman

Steven Robert Schmid

Xiaosong Wu

Anthony Joseph Tortorello

Timothy Edward Bishop

Pratik Shah

Paulus Antonius Maria Steeman

Kangtai Ren

Huimin Cao

Tyson Dean Norlin

Petrus Jacobus Hubertus Niels

Described herein is a method for coating optical fiber where the coating has been cured by application of a source of monochromatic actinic radiation, such as a light emitting diode, wherein the coating contains a urethane(meth)acrylate oligomer; a (meth)acrylate diluent monomer; a diluent monomer having an electron donating group adjacent to the vinyl group, such as a vinyl ether monomer; and a photoinitiator. Also described are compositions which are capable of undergoing photopolymerization when coated on an optical fiber and when irradiated by a light emitting diode (LED) with improved surface cure and reduced yellowing. Also described are the coated optical fibers produced by such processes and compositions.

Monochromatic actinic radiation curable coatings for optical fiber

The invention relates to a Radiation Curable Secondary Coating composition for use on an Optical Fiber. The Radiation Curable Secondary Coating composition is a urethane-free Alpha Oligomer prepared by reaction of the following: (a) an acrylate compound selected from an alcohol-containing acrylate or alcohol-containing methacrylate compound, (b) an anhydride compound, (c) an epoxy-containing compound, (d) optionally an extender compound, and (e) optionally a catalyst. The invention also relates to a coated wire and to a coated optical fiber.

D1364 BT secondary coatings on optical fiber

The first aspect of the instant claimed invention is a method of formulating radiation curable Supercoatings for application to an optical fiber used in a telecommunications network. A Multi-layer Film Drawdown Method useful in the Method of formulating radiation curable Supercoatings is also described and claimed. Single mode Optical fibers coated with specific radiation curable Supercoatings are also described and claimed.

D1451 radiation curable supercoatings for single mode optical fiber

D1451 radiation curable supercoatings for multi-mode optical fiber

D 1364 BT secondary coatings on optical fiber

The invention provides an optical fiber coated with a Supercoating, wherein the Supercoating comprises at least two layers, wherein the first layer is a Primary Coating that is in contact with the outer surface of the optical fiber and the second layer is a Secondary Coating in contact with the outer surface of the Primary Coating, wherein the cured Primary Coating on the optical fiber has the following properties after initial cure and after one month aging at 85&#xb0; C. and 85% relative humidity: A) a % RAU of from about 84% to about 99%; B) an in-situ modulus of between about 0.15 MPa and about 0.60 MPa; and C) a Tube Tg, of from about &#x2212;25&#xb0; C. to about &#x2212;55&#xb0; C.; wherein the cured Secondary Coating on the optical fiber has the following properties after initial cure and after one month aging at 85&#xb0; C. and 85% relative humidity: A) a % RAU of from about 80% to about 98%;B) an in-situ modulus of between about 0.60 GPa and about 1.90 GPa; andC) a Tube Tg, of from about 50&#xb0; C. to about 80&#xb0; C.

D1381 supercoatings for optical fiber

The present invention relates to a method of improving the tensile, elongation, and/or modulus (overall toughness) of a radiation curable composition by reacting in a free multi-functional isocyanate prior to curing. Also, radiation-curable compositions are provided that include

Urethane-acrylic coatings for optical fiber

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Iron Station, NC, United States of America

Wendell Wayne Cattron