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Fiber coatings with low young's modulus and high tear strength

A weight, compound technology, applied in coatings, glass fibers, clad fibers, etc., can solve problems such as damage

Active Publication Date: 2016-06-29
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the Young's modulus of the primary coating decreases, the primary coating is more susceptible to damage during the fiber manufacturing process or during fiber installation or deployment

Method used

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  • Fiber coatings with low young's modulus and high tear strength
  • Fiber coatings with low young's modulus and high tear strength
  • Fiber coatings with low young's modulus and high tear strength

Examples

Experimental program
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Effect test

Embodiment

[0199] Several coatings formed from the coating composition containing the oligomeric material of the present invention were tested. These tests include measurements of Young's modulus and tear strength. In the following, the components, processing conditions, test methods and test results of the coating composition are described.

[0200] According to the exemplary reaction described above, H12MDI (4,4'-methylene bis(cyclohexyl isocyanate)), PPG4000 (M n An exemplary oligomeric material was prepared at about 4000 g / mol of polypropylene glycol) and HEA (-2-hydroxyethyl acrylate). All reagents use the original reagents provided by the manufacturer, without any further purification. H12MDI is obtained from Aldrich or Bayer. Three variants of PPG4000 were used in the synthesis of sample oligomers. Variant 1 (Voranol 220-028 available from Dow Chemical) contains a greater amount of low molecular weight material. Variation 2 (polyethylene glycol P4000 available from Dow Chemical) ...

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PUM

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Abstract

Fiber coatings with low Young's modulus and high tear strength are realized with coating compositions that include an oligomeric material formed from an isocyanate, a hydroxy acrylate compound and a polyol. The oligomeric material includes a polyether urethane acrylate and a di-adduct compound, where the di-adduct compound is present in an amount of at least 2.35 wt%. The reaction mixture used to form the oligomeric material may include a molar ratio of isocyanate:hydroxy acrylate:polyol of n:m:p, where n may be greater than 3.0, m may be between n-1 and 2n-4, and p may be 2. Young's modulus and tear strength of coatings made from the compositions increase with increasing n. Coatings formed from the present oligomers feature high tear strength for a given Young's modulus.

Description

[0001] This application claims priority of U.S. Provisional Application Serial No. 61 / 876918 filed on September 12, 2013 in accordance with 35 U.S.C. §119. This application is based on the content of the application and is incorporated herein by reference in its entirety. Technical field [0002] The present invention relates to a fiber coating with low Young's modulus and high tear strength. More specifically, the present invention relates to oligomers used in radiation-curable coating compositions for forming fiber coatings with low Young's modulus and high tear strength. Background of the invention [0003] The light transmittance in an optical fiber largely depends on the nature of the coating applied to the fiber. The coating usually includes a primary coating and a secondary coating. The secondary coating surrounds the primary coating, and the primary coating is in contact with the glass waveguide (core + cladding) part of the fiber. The secondary coating is a harder (highe...

Claims

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Application Information

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IPC IPC(8): C08G18/67C08G18/75C03C25/10G02B6/02C09D175/16
CPCC03C25/106C08G18/672G02B6/02395C08G18/758C09D175/16C08G18/48C08G18/4825C08G18/04G02B1/14
Inventor 陈仰斌M·欧坎坡R·坦登
Owner CORNING INC
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