Radiation curable coating for optical fiber

Abstract

The invention relates to radiation curable compositions. The invention provides radiation curable optical fiber primary coating compositions comprising an oligomer, a reactive diluent monomer blend comprising at least two reactive diluents monomers, and at least one photoinitiator, wherein each of said monomers in said blend has the formula (I) wherein x is an integer of from 1 to 6; n is an integer of from 1 to 5; and each Y, which may be the same or different, is independently selected from the group consisting of hydrogen, a C1 to C12 alkyl group and an alkarylalkoxylated acrylate radical; and at least one photoinitiator; said reactive diluent monomer blend being substantially free of non-aryl reactive diluent monomers; wherein when an aryl reactive diluent monomer is present that has a molecular weight less than about 300, it is present at no more than about 10 wt. % of the total formulation.

Description

[0001] Related Patent Applications [0002] This patent application claims priority to US Provisional Patent Application 61 / 272596, filed October 9, 2009, and US Provisional Patent Application 61 / 250329, filed October 9, 2009. technical field [0003] The present invention generally relates to a radiation curable coating for use as a primary coating for an optical fiber, an optical fiber coated with such a coating, and a method of making such a coated optical fiber. Background technique [0004] Optical fibers are glass fibers that carry light along their length. Optical fibers are widely used in optical fiber communications, which allow transmission over longer distances with greater bandwidth (data rates) than other forms of communication. Optical fibers are used instead of metal wires because signals travel along them with less loss, and they are immune to electromagnetic interference. [0005] The light is kept in the core of the fiber by total internal reflection. T...

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Problems solved by technology

[0024] In order to meet the huge demand for video applications on the Internet, the next generation of telecommunication networks is required to support larger capacity, longer distance and wider spectral range transmission. The performance of the current generation of G652 optical fiber is aimed at long distance, straight, Aligned application environment developed, so G562 is not suitable to meet the challenges and requirements of fiber-to-the-home (FTTH)

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