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Polyurethane acrylate oligomer, preparation method thereof, coating composition and application of coating composition

A technology of urethane acrylate and hydroxy acrylate, applied in the field of urethane acrylate oligomer and its preparation

Active Publication Date: 2021-05-18
ANQING FEIKAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The optical fiber primary coating prepared by using oligomers provided by related technologies is difficult to simultaneously satisfy good flexibility, elongation at break and good adhesion to the substrate , fast curing and other characteristics

Method used

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  • Polyurethane acrylate oligomer, preparation method thereof, coating composition and application of coating composition
  • Polyurethane acrylate oligomer, preparation method thereof, coating composition and application of coating composition
  • Polyurethane acrylate oligomer, preparation method thereof, coating composition and application of coating composition

Examples

Experimental program
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preparation example Construction

[0081] On the other hand, the embodiment of the present invention also provides a preparation method of any one of the above-mentioned urethane acrylate oligomers, the preparation method comprising the following steps:

[0082] Step 1: Under the action of the second catalyst, the diisocyanate and the polymer polyol are subjected to the first reaction to obtain the first reaction product, and the first reaction is stopped after the isocyanate group in the first reaction product reaches the first designed amount.

[0083] By making the isocyanate group in the first reaction product reach the first design amount, the reaction residual amount of the isocyanate group is controlled within the design range, so as to facilitate the control of the structural regularity of the first reaction product, which is beneficial to more easily obtain Urethane acrylate oligomer of desired structure.

[0084] Step 2: Under the action of the second catalyst, make the first reaction product react wi...

Synthetic example 1

[0118] The hydroxyethyl acrylate of 1mol and the caprolactone of 1.05mol are joined in the reactor, then add 3% (mass percent) methyl hydrogen kine and 0.15% (mass percent) stannous octoate, carry out ring opening at 130 ℃ For the reaction, use HPLC to detect the caprolactone content until the caprolactone content is less than 0.1% (mass percentage), and separate by column chromatography to obtain the product with a=1.

[0119]Add 0.8 mol and 0.84 mol of tetrahydrofuran of the above-mentioned isolated products into the reactor, then add 1% methyl hydrogen and 0.1% trifluoromethanesulfonic acid, carry out ring-opening reaction at 50 ° C, stop after 10 hours of reaction, pass Column chromatography separates the a=1, b=1 product.

[0120] Add 0.4mol of the isolated product and 0.42mol of γ-butyrolactone into the reactor, then add 3% methyl hydrogen kinetolate and 0.1% stannous octoate, carry out ring-opening reaction at 130°C, and use HPLC to detect γ-butyrolactone Butyrolactone...

Synthetic example 2

[0123] Add 1 mol of hydroxyethyl acrylate and 1.05 mol of caprolactone into the reactor, then add 3% methyl hydrogen quinone and 0.2% stannous octoate, carry out ring-opening reaction at 130°C, and use HPLC to detect caprolactone content until the caprolactone content is less than 0.1%, the product with a=1 is obtained by column chromatography. Add 0.4mol and 0.42mol of γ-butyrolactone of the above-mentioned isolated products into the reactor, then add 3% methyl hydrogen kinetolate and 0.2% stannous octoate, carry out ring-opening reaction at 130°C, and use HPLC to detect γ-butyrolactone. Butyrolactone content, until the gamma-butyrolactone content is less than 0.1%, separated by column chromatography to obtain a=1, b=0, c=1 hydroxy acrylate 2, the structure is as follows:

[0124]

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Abstract

The invention discloses a polyurethane acrylate oligomer, a preparation method thereof, a coating composition and application of the coating composition, and belongs to the technical field of coatings. The chemical formula of the polyurethane acrylate oligomer is as follows: A-(B1)X-(B2)-A, wherein A is hydroxyl acrylate, the hydroxyl acrylate is obtained after hydroxyalkyl acrylate is modified by a modifier, and the modifier is selected from at least one of lactone, tetrahydrofuran and gamma-butyrolactone; B1 is a diisocyanate-polymer polyol; B2 is diisocyanate; and X is an integer of 1-3. A coating obtained by using the polyurethane acrylate oligomer has the characteristics of good spacing flexibility, good elongation at break, good adhesiveness to a base material, rapid curing and the like, and is particularly suitable for being used as a primary coating of optical fibers.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to polyurethane acrylate oligomers, a preparation method thereof, a coating composition and applications thereof. Background technique [0002] Optical fiber protective coating system includes primary coating (also known as inner coating) and secondary coating (also known as outer coating), in which the primary coating is directly in contact with the optical fiber to improve the adhesion to the glass. Strength, flexibility and good high and low temperature performance, so that it will not damage the light transmission performance. [0003] In the related art, the coating composition used to form the optical fiber primary coating includes: oligomers, diluents, photoinitiators, auxiliary agents, and the oligomers used are generally composed of at least one polymer polyol, at least one bismuth Prepared from isocyanate and ethyl 2-hydroxyacrylate. [0004] In the process of realizing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/48C09D175/16
CPCC08G18/672C08G18/4825C09D175/16
Inventor 张志鹏于鲲鹏
Owner ANQING FEIKAI NEW MATERIAL CO LTD
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