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Light-cured urethane acrylate resin composition and preparation method and application thereof

A technology of urethane acrylate and resin composition, which is applied in the field of light-curing urethane acrylate resin composition and its preparation, can solve the problems of not meeting the requirements for the use of synthetic leather, low elongation at break, and low tensile strength, and achieve The effect of reducing the cost and difficulty of resin preparation process, improving mechanical properties and high elongation at break

Active Publication Date: 2020-12-04
DAICEL (CHINA) INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the disadvantages such as poor mechanical properties of polyurethane acrylate existing in the prior art, low tensile strength, low elongation at break (<200%), and failure to meet the use requirements of synthetic leather. Cured polyurethane acrylate resin composition and its preparation method and application, the elongation at break of the polyurethane acrylate resin composition is 200-300%, the tensile strength is 20-80MPa, and the 100% strain modulus is 3-20MPa. Can meet the application of different synthetic leather products

Method used

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  • Light-cured urethane acrylate resin composition and preparation method and application thereof
  • Light-cured urethane acrylate resin composition and preparation method and application thereof
  • Light-cured urethane acrylate resin composition and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0119] Add 100 parts of polytetrahydrofuran ether diol with a number average molecular weight of 1000 into the reaction kettle, dehydrate at 110°C for 2 hours, then cool down to 50°C, add 7.5 parts of ethylene glycol, 60 parts of isophorone diisocyanate, 15 parts of ethylene Oxyethoxyethyl acrylate, heat up to 80°C for 2 hours, then cool down to 50°C, then add 0.1 parts of dibutyltin dilaurate (DBTDL) and 10.5 parts of hydroxyethyl acrylate to the reaction kettle, heat up to 80°C , reacted for 3 hours, stopped the reaction and lowered the temperature to obtain the polyurethane acrylate resin composition, based on the total weight of the composition, the content of the reactive diluent was 7.77wt%.

[0120] After calculation, the total content of the first hard segment and the second hard segment is 37.91wt%. In the polyurethane acrylate resin, the content of the first hard segment is 33.7wt%, the content of the second hard segment is 4.21wt%, the content of the soft segment is...

Embodiment 2

[0124] Add 100 parts of polytetrahydrofuran ether diol with a number average molecular weight of 1000 into the reactor, dehydrate at 120°C for 2 hours, then cool down to 50°C, add 11 parts of propylene glycol, 70 parts of 4,4'-dicyclohexylmethane diisocyanate, 20 parts of cyclotrimethylolpropane formal acrylate, heat up to 80°C for 2 hours, then cool down to 50°C, then add 0.1 parts of dibutyltin dilaurate and 8.2 parts of caprolactone-modified formaldehyde into the reaction kettle Acrylate, heated to 80 ° C, reacted for 3 hours, stopped the reaction, lowered the temperature to obtain the polyurethane acrylate resin composition, based on the total weight of the composition, the content of the reactive diluent was 9.56wt%.

[0125] After calculation, the total content of the first hard segment and the second hard segment is 42.81wt%. In the polyurethane acrylate resin, the content of the first hard segment is 37wt%, the content of the second hard segment is 5.81wt%, the content...

Embodiment 3

[0127] Add 200 parts of polytetrahydrofuran ether diol with a number average molecular weight of 2000 into the reaction kettle, dehydrate in vacuum at 110°C for 2 hours, then cool down to 50°C, add 41 parts of 1,4-butanediol, 160 parts of isophorone diol Isocyanate, 25 parts of ethoxyethoxyethyl acrylate, heat up to 80 ° C for 2 hours, then cool down to 50 ° C, then add 0.1 part of dibutyltin dilaurate to the reaction kettle, add 46.8 parts of hydroxyethyl methacrylate ester, heated to 80° C., reacted for 3 hours, stopped the reaction, and lowered the temperature to obtain the polyurethane acrylate resin composition. Based on the total weight of the composition, the content of the reactive diluent was 5.27 wt%.

[0128] After calculation, the total content of the first hard segment and the second hard segment is 44.89wt%. In the polyurethane acrylate resin, the content of the first hard segment is 35.73wt%, the content of the second hard segment is 9.16wt%, the content of the ...

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Abstract

The invention relates to the field of urethane acrylate resin, and discloses a light-cured urethane acrylate resin composition and a preparation method and application thereof. The composition is prepared from urethane acrylate resin and an active diluent, wherein the urethane acrylate resin comprises a soft segment provided by polymer dihydric alcohol, a first hard segment provided by diisocyanate, a second hard segment provided by dihydric alcohol with the molecular weight of less than 150, a terminal structure unit provided by an acrylate compound, the number-average molecular weight of thepolymer diol is 200-5000, the acrylate compound has a structure as shown in a formula (1) which is described in the specification, and in the formula, R1 is H or C1-C10 alkyl, R2 is an alkylene groupof C1-C4, and R3 is H or m is an integer of 1-20. The elongation at break of the urethane acrylate resin composition is 200-300%, the tensile strength is 20-80 MPa, the 100% strain modulus is 3-20 MPa, and the urethane acrylate resin composition can be applied to different synthetic leather products.

Description

technical field [0001] The invention relates to the field of polyurethane acrylate resins, in particular to a photocurable polyurethane acrylate resin composition and its preparation method and application. Background technique [0002] Leather is one of the earliest materials for human beings. With the development of human society, the imbalance between the supply of natural leather and the growing demand of people has become more and more prominent. In order to solve the growing shortage of natural leather and meet people's demand for various clothing materials In the 1930s, people began to use different chemical raw materials and methods to manufacture natural leather substitutes. [0003] The application field of artificial leather and synthetic leather involves all aspects of people's life, and has a broad demand market. In recent years, the world's artificial leather and synthetic leather industry center has gradually shifted to my country, which has promoted the rapid...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/67C08L75/16
CPCC08G18/6674C08G18/4854C08G18/3206C08G18/672C08L75/16
Inventor 刘永强何守钢刘伟
Owner DAICEL (CHINA) INVESTMENT CO LTD
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