Resin composition for optical fibre paint, coated optical fibre and optical fibre unit utilizing it

A resin composition and composition technology, applied to the resin composition used for optical fiber coatings, can solve the problems of not considering deconstruction, not considering cutting resistance, etc.

Inactive Publication Date: 2003-11-19
DAINIPPON INK & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the optical fiber coating resin compositions disclosed in the above-mentioned known documents, no consideration is given to the cut resistance to solve the possibility of occurrence of cuts during a large amount of handling, nor is the deconstruction property considered, so the resin composition is insufficient to satisfy these characteristics

Method used

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Examples

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Embodiment 1

[0131] Calculation example of embodiment 1 (1) oligomer (A2-1) is the product of addition reaction between 1mol PPG2000 (number average molecular weight 2000), 2mol TDI (molecular weight 174) and 2mol HEA (molecular weight 116), thus when The amount of urethane linkages produced when these substances react by stoichiometric ratio is 4, and the molecular weight of oligomer (A2-1) is obtained with the following formula:

[0132] Molecular weight = 2000 x 1 + 174 x 2 + 116 x 2 = 2580 Therefore, the concentration of incorporated urethane linkages in 1 kg of oligomer (A2-1) is calculated as follows:

[0133] The concentration of urethane connection=4÷2580×1000=1.550mol / kg (2) oligomer (A2-3) is 1mol PPG8000 (number average molecular weight 8000), 2mol TDI (molecular weight 174) and 2mol HEA (molecular weight 116) between the product of the addition reaction, so calculate the concentration of the combined urethane linkage in 1kg oligomer (A2-3) in a manner similar to the above (1), ...

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PUM

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Abstract

A resin composition for a coating for an optical fiber which comprises a radical polymerizable oligomer (A) and a radical polymerizable monomer (B), wherein (A) comprises a radical polymerizable oligomer (A1) with Mn of 600 to 1600 formed by reacting compounds (1) to (3) below: (1) an aliphatic polyol compound with Mn of 50 to 600, (2) a polyisocyanate compound with a ring structure, and (3) a compound with a hydroxyl group and a radical polymerizable unsaturated group; and a radical polymerizable oligomer (A2) formed by reacting compounds (4) to (6) below: (4) an aliphatic polyol compound with Mn of 800 to 10,000, (5) a polyisocyanate compound, and (6) a compound with a hydroxyl group and a radical polymerizable unsaturated group; a mass ratio (A1) / (A2) is 20 / 80 to 80 / 20, and a concentration of urethane linkages within the resin composition is 1.85 to 3.00 mol / kg.

Description

field of invention [0001] The present invention relates to a resin composition for optical fiber coating and coated optical fiber and optical unit using the resin composition. More specifically, the present invention relates to optical fiber coating resin compositions for use in a second coating or unit layer. Background technique [0002] Optical fiber cables are used as a transmission medium for a large amount of information, and broadband information communication networks using optical fiber cables are being continuously constructed. The optical fiber includes a double-layer coating structure and a single-layer coating structure. In the double-layer coating structure, a first coating and a second coating are formed by ultraviolet or radiation curing resin on the glass waveguide. The single-layer coating structure includes a single-layer coating. [0003] The first coating of the double-layer coating structure is generally a flexible coating with a Young's modulus (tensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/67C09D175/16
CPCC08G18/4854C09D175/16C08G18/672C08G18/48C03C25/26
Inventor 押尾笃斋藤治
Owner DAINIPPON INK & CHEM INC
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