Curable liquid resin optical fiber upjacket composition

A technology of liquid resin and composition, applied in the direction of coating, polyurea/polyurethane coating, etc., can solve the problem of insufficient removability of tight cladding, achieve excellent strength and weather resistance, and improve operability

Inactive Publication Date: 2007-08-29
DSM IP ASSETS BV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the removability of the tight envelope formed using the above composition is insufficient

Method used

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  • Curable liquid resin optical fiber upjacket composition
  • Curable liquid resin optical fiber upjacket composition
  • Curable liquid resin optical fiber upjacket composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8 and comparative example 1-3

[0136] Each component of the composition shown in Table 1 was charged in a reactor equipped with an agitator. The mixture was stirred at 50° C. for 2 hours to obtain a curable liquid resin composition.

[0137] testing method

[0138] The curable liquid resin compositions obtained in the above Examples and Comparative Examples were cured according to the following method to prepare test samples. The following evaluations were performed on the test samples.

[0139] 1. Young's modulus

[0140] The curable liquid resin composition was coated onto a glass plate using a coating bar with a gap size of 250 μm, and was dosed at 1 J / cm in air 2 Cured by ultraviolet light to obtain a Young's modulus measurement film. The film was cut into strip-shaped samples so that the portion to be stretched was 6 mm wide and 25 mm long. Tensile measurements were performed on the samples at a temperature of 23°C and a humidity of 50%. Young's modulus was calculated from the tensile strength ...

Embodiment 9-13

[0150] The preparation method of embodiment 9-13

[0151] The tight coating compositions of Examples 9-13 were prepared by mixing and heating the ingredients shown in Examples 9-13.

[0152] testing method

[0153] 1. Young's modulus: see part A of the examples

[0154] 2. Removability

[0155] The primary material (Desolite 3471-1-129A: produced by DSM Desotech, Inc.), the secondary material (3471-2-136: produced by DSM Desotech, Inc.) and the ink material (Cabelite751-017: produced by Desotech, Inc. .production) was coated on the glass fiber, and cured by applying ultraviolet light with a rewinder OFC 52 (produced by Nextrom Technologies, Inc.) to obtain a resin-coated optical fiber with an outer diameter of 250 μm. The curable composition listed in Table 2 was coated on the resin-coated optical fiber as a tight-packing material, and cured by applying ultraviolet light with the above-mentioned rewinder to obtain a tight-packed optical fiber with an outer diameter of 5...

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PUM

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Abstract

The present invention provides a curable liquid resin composition which, when cured, exhibits excellent removability from an adjacent coating layer and is suitable as an optical fiber upjacket material. The curable liquid resin optical fiber upjacket composition comprising a urethane (meth) acrylate or a (meth) acrylate oligomer containing two or more (meth) acryloyl groups, a reactive diluent, a polymerization initiator, and a urethane (meth) acrylate compound containing at least one (meth) acryloyl group and selected from (Dl) to (D4) shown by the following general formula (1). (Dl) In the formula (1), R1 represents a methyl group, R2 and R3 individually represent a divalent organic group, and R4 represents a monovalent organic group. (D2) In the formula (1), R1 represents a hydrogen atom, R2 and R3 individually represent divalent organic groups, and R4 represents a polyol residue having a molecular weight of 1500 or more. (D3) In the formula (1), R1 represents a hydrogen atom or a methyl group, R2 and R3 individually represent divalent organic groups, and R4 represents a silicone residue having a molecular weight of 1000 to 30000. (D4) In the formula (1), R represents a hydrogen atom, R and R individually represent divalent organic groups, and R4 represents a polyol monoalkyl ether residue having a molecular weight of 500 to 20000.

Description

technical field [0001] The present invention relates to a curable liquid resin optical fiber packing composition coated and cured on the surface of a resin-coated optical fiber. Background technique [0002] In optical fiber manufacturing, glass fibers are produced by spinning molten glass and then provided with a resin coating on the glass fibers for protection and reinforcement. This step is called fiber drawing. As the resin coating, there is known a structure in which a flexible primary coating is formed on the surface of an optical fiber, and then a rigid secondary coating is coated on the primary coating. There is also known a structure in which resin-coated optical fibers are arranged side by side on a plane and bundled with a bundling material to form a ribbon-like coating. The resin composition used to form the primary coating is called a primary material, the resin composition used to form a secondary coating is called a secondary material, and the resin composit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/28C08G18/67C09D175/16C08G18/48C08G18/76C08G18/10
CPCC09D175/16C08G18/289C08G18/61C08G18/672C08G18/7621C08G18/8175C08L75/16C08G18/48C08L2666/20C08F290/06C09D4/00C08F220/00
Inventor 山口洋加茂理杉本雅信重本建生爱德华·约瑟夫·墨菲
Owner DSM IP ASSETS BV
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