Curable liquid resin optical fiber upjacket composition

A technology of liquid resin and composition, used in optics, optical components, instruments, etc., can solve the problem of insufficient removability of tight cladding, achieve excellent strength and weather resistance, and improve usability.

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 1-3 and comparative example 1-5

[0108] Each component of the composition shown in Table 1 was charged in a reactor equipped with a stirrer. The mixture was stirred at 50° C. for 1 hour to obtain a curable liquid resin composition.

[0109] testing method

[0110] The curable liquid resin compositions obtained in the above Examples and Comparative Examples were cured to prepare test samples. The following evaluations were performed on the test samples.

[0111] The curable liquid resin composition is coated on a glass plate with a coating device with a gap size of 250 μm, and the dose is 1J / em 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 at a stretch rate of 1 mm / min and a strain of 2.5%.

[0112] 2. Remo...

preparation Embodiment 6-8

[0119] B. Preparation Examples 6-8 (Table 2)

[0120] Urethane acrylate oligomer TH-PPG1000-TH was prepared by reacting toluene diisocyanate with 2-HEA. The reactants comprising isocyanates with reactive ends were then reacted with polyether polyol P1010 in the presence of dibutyltin dilaurate until unreacted levels were found to be below 0.1%.

Embodiment 6

[0121] The tight coating composition of Example 6 was prepared by mixing the urethane acrylate oligomer with the other ingredients listed in Example 6 and heating.

[0122] The tight coating compositions of Examples 7 and 8 were prepared by mixing and heating the ingredients listed in Examples 7 and 8.

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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 for an optical fiber upjacket material. The curable liquid resin optical fiber upjacket composition comprising a urethane (meth)acrylate or a (meth)acrylate oligomer, a reactive diluent, a polymerization initiator, and a polyol compound having a molecular weight of 1500 or more.

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 containment and reinforcement. This step is called "fiber stretching". 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 bound with a binding material to form a ribbon-shaped coating. A resin composition used to form a primary coating is called a primary material, a resin composition used to form a secondary coating is called a secondary material, and a resin composition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D4/00C03C25/10C09D171/00G02B1/04C09D175/16
CPCC08G18/8175C08F290/147C08G18/672C09D175/16C03C25/1055C08L83/12C03C25/1065C08G18/48C09D133/08C09D133/10
Inventor 山口洋加茂理杉本雅信重本建生肯尼思·达克
Owner DSM IP ASSETS BV
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