Dsm IP Assets B.v.

Covestro (netherlands) B.v.

Xiaosong Wu

Paulus Antonius Maria Steeman

Wendell Wayne Cattron

Edward Joseph Murphy

John Monroe Zimmerman

Steven Robert Schmid

Adrianus Cornelis Bastiaan Bogaerds

Timothy Edward Bishop

Mark Petrus Franciscus Pepels

Pratik Shah

Anthony Joseph Tortorello

Mark Pepels

Tyson Dean Norlin

Petrus Jacobus Hubertus Niels

Guido Joseph Elisabeth Hensen

Long Han

Edward J Murrhy

Described and claimed herein are radiation curable compositions for coating an optical fiber, particularly primary coating compositions, wherein the composition possesses specified liquid glass transition temperatures, and/or viscosity ratios between, e.g., 25° C. and 85° C. Such compositions possess preferably high amounts of a reactive oligomer component with a backbone not derived from polypropylene glycol, preferably reactive oligomers with select diisocyanate constituents, one or more reactive diluent monomers, a photoinitiator, and optionally, one or more additives. Such compositions also are preferably sufficiently viscous at room temperature to ensure optimum optical fiber coating processability. Also described are methods of coating the radiation curable compositions elsewhere described, and the fiber optic coatings resulting therefrom.

Radiation curable compositions for coating optical fiber and the coatings produced therefrom

Described herein are coated optical fibers including an optical fiber portion, wherein the optical fiber portion includes a glass core and cladding section that is configured to possesses certain mode-field diameters and effective areas, and a coating portion including a primary and secondary coating, wherein the primary coating is the cured product of a composition that possesses specified liquid glass transition temperatures, such as below &#x2212;82&#xb0; C., and/or a viscosity ratios, such as between 25&#xb0; C. and 85&#xb0; C., of less than 13.9. Also described are radiation curable coating compositions possessing reduced thermal sensitivity, methods of coating such radiation curable coating compositions to form coated optical fibers, and optical fiber cables comprising the coated optical fibers and/or radiation curable coating compositions elsewhere described.

Thermally resistant radiation curable coatings for 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

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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Geneva, IL, United States of America

Xiaosong Wu