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Adhesion promoter of optical fiber coating and preparation method thereof

An adhesion promoter and coating technology, which is used in the field of light coating adhesion promoter and its preparation, can solve the problem that the adhesion promoter cannot be dispersed in water, etc., achieve good water-based dispersion, improve adhesion, and promote polymerization speed. Effect

Inactive Publication Date: 2011-08-31
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the adhesion promoters related to optical fiber UV-curable coatings are all solvent-based adhesion promoters. However, with the development trend of environmentally friendly optical fiber UV-curable water-based coatings, the adhesion promoters in the prior art are used in water-based Can not get good water dispersion in paint

Method used

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  • Adhesion promoter of optical fiber coating and preparation method thereof
  • Adhesion promoter of optical fiber coating and preparation method thereof
  • Adhesion promoter of optical fiber coating and preparation method thereof

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preparation example Construction

[0036] The present invention also provides a preparation method of an optical fiber coating adhesion promoter, comprising:

[0037] Under nitrogen protection, add 1 mol of polyethylene glycol monomethyl ether to 3 mol of diisocyanate cyclic trimer, control the reaction temperature at 80-90°C, and react for 2-3 hours to obtain the first intermediate product;

[0038] Cool down to 75-80°C, add a mixture of 1 mol of hydroxyacrylate and 0.0003 mol of p-hydroxyanisole to the first intermediate product, and react for 1.5-2.5 hours to obtain the second intermediate product;

[0039] Cool down to 50-65° C., add 0.0004 mol of dibutyltin dilaurate and 1.1-1.3 mol of siloxane compound to the second intermediate product, and react for 1-8 hours to obtain a water-based adhesion promoter.

[0040] The diisocyanate cyclic trimer is preferably an aromatic or aliphatic cyclic trimer. Among them, the aromatic diisocyanate can be selected from 2,4-toluene diisocyanate cyclic trimer, 2,6-toluene...

Embodiment 1

[0049] Embodiment 1: water-based adhesion promoter

[0050] Under nitrogen protection, add 1 mol of polyethylene glycol monomethyl ether (number average molecular weight: 350 Daltons) into Desmodur N3390 with 3 mol of isocyanate content, control the reaction temperature at 90°C, and react for 2.5 hours; then, cool down to 85°C , add a mixture of 1mol hydroxyethyl acrylate and 0.0003mol p-hydroxyanisole, and react for 1.5 hours; cool down to 65°C, add 0.0004mol dibutyltin dilaurate and 1.3mol 3-mercaptopropyltrimethoxysilane, and react After 8 hours, the adhesion promoter WS 1 was obtained.

[0051] Carry out nuclear magnetic resonance to described modified polyurethane acrylate, the result sees figure 1 , figure 1 The proton nuclear magnetic resonance spectrum of the water-based adhesion promoter provided for the embodiments of the present invention, by figure 1 It can be seen that its hydrogen spectrum is as follows: 1 H NMR: 0.91ppm, 1.24ppm, 1.32ppm, 1.57ppm, 2.02ppm, 2...

Embodiment 2

[0052] Embodiment 2: water-based adhesion promoter

[0053] Under nitrogen protection, add 1 mol of polyethylene glycol monomethyl ether (number average molecular weight: 76 Daltons) into Desmodur Z4470 with 3 mol of isocyanate content, and control the reaction temperature at 100°C for 2 hours; then, cool down to 80°C , add a mixture of 1mol pentaerythritol triacrylate and 0.0003mol p-hydroxyanisole, and react for 2 hours; cool down to 50°C, add 0.0004mol dibutyltin dilaurate and 1.3mol 3-aminopropyltriethoxysilane, React for 1 hour to obtain the adhesion promoter WS2.

[0054] Carry out nuclear magnetic resonance to described aqueous adhesion promoter, its hydrogen spectrum is as follows: 1 H NMR: 0.59ppm, 1.13ppm, 1.45ppm, 1.71ppm, 2.95ppm, 3.16ppm, 3.20ppm, 3.24ppm, 3.55ppm, 3.65ppm, 3.98ppm, 4.07ppm, 4.25ppm, 5.80ppm, 6.05ppm, 6.43ppm . It can be seen that the modified polyurethane acrylate is a modified polyurethane acrylate with a structure of formula (I), wherein, R ...

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Abstract

The invention provides an adhesion promoter of an optical fiber coating, which comprises a compound represented by a formula I in the specification, wherein R1 is a methyl or an ethyl; R2 is a diisocyanate cyclic trimer group; R3 is an acrylic ester group; m and n are the numbers of repeated units, m is not less than 1 and not more than 30, n is not less than 1 and not more than 50; and X is -S-, -NH-. The adhesion promoter can be well aqueously dispersed in an aqueous ultraviolet curable coating, and has polymerization activity, so that the polymerization speed of the optical fiber coating is promoted, and the adhesion of the cured coating on an optical fiber substrate is improved. The invention also provides a preparation method of the adhesion promoter of the optical fiber coating, which comprises the step of synthesizing the adhesion promoter by using raw materials of polyethylene glycol monomethyl ether, diisocyanate cyclic trimer, siloxane and the like. All the raw materials are aqueous compounds, thus the environment is protected, the synthesis conditions are mild, and the operation is easy.

Description

technical field [0001] The invention relates to the field of optical fiber coatings, in particular to a light coating adhesion promoter and a preparation method thereof. Background technique [0002] Adhesion promoters between UV-curable optical fiber coatings and optical fiber substrates are key components of coatings, and the most common accelerators are compounds containing siloxane groups, such as Chinese patent 03124078.X, Chinese patent ZL03136169 .2. Chinese patent 200680007716.8 and Chinese patent 200780041415.1 are optical fiber coating adhesion promoters disclosed by compounds containing siloxane groups. However, the above-mentioned siloxane accelerators have no unsaturated bonds. Although the adhesion is improved after addition, the mechanical properties of the cured paint film are affected because they cannot be polymerized. US Patent No. 6391463B1 and Chinese Patent No. 200610028117.6 prepare accelerators by reacting siloxane compounds containing isocyanate wit...

Claims

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Application Information

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IPC IPC(8): C09D7/12C08G65/48C07F7/18
Inventor 张红明李季王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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