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Castor oil-based UV-cured polyurethane acrylate and preparation method and application thereof

A urethane acrylate, castor oil-based technology, applied in the field of UV-curable polymer materials, can solve problems such as no castor oil involved, and achieve the effects of good overall performance, excellent hydrolysis resistance, and good low-temperature performance.

Active Publication Date: 2016-07-27
GUANGDONG LANYANG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent applications with publication numbers CN103881341A and CN102604015A respectively disclose a tung oil derivative modified unsaturated polyester resin composition and a methylated tung oil modified waterborne polyurethane emulsion, although both also involve the preparation of UV curable with natural vegetable oil resources Resins, but not related to the preparation of castor oil-based UV-curable PUAs

Method used

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  • Castor oil-based UV-cured polyurethane acrylate and preparation method and application thereof
  • Castor oil-based UV-cured polyurethane acrylate and preparation method and application thereof
  • Castor oil-based UV-cured polyurethane acrylate and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Add the measured polyethylene glycol, polyethylene glycol and castor oil in turn into the reactor, stir and heat up to 115°C, dehydrate under reduced pressure for 2 hours and then cool down to 65°C, then gradually add isofor The mixture of ketone diisocyanate and dibutyltin dilaurate (0.1% of urethane acrylate prepolymer weight), pay attention to control its drop rate, add with the speed of 1g / min, after reacting for 3h, will be dissolved in bisphenol A and Add the N,N-dimethylformamide and acetone mixed solution of 2,2-dimethylolpropionic acid into the reactor and continue the reaction. During the period, take samples to measure the -NCO group content until it reaches the theoretical value. The first step is to react Finish;

[0028] (2) The temperature of the above-mentioned intermediate product is lowered to 45° C., and hydroxyethyl acrylate, hydroxyethyl methacrylate and p-hydroxyanisole (being 1 / 2 of the weight of hydroxyethyl acrylate and hydroxyethyl methacry...

Embodiment 2

[0032] (1) Add the measured polyethylene glycol, polyethylene glycol and castor oil in sequence in the reactor, stir and raise the temperature to 115°C, decompress and dehydrate for 2 hours, then cool down to 65°C, and then gradually add hexaethylene glycol dropwise The mixture of methyl diisocyanate, toluene diisocyanate and dibutyltin dilaurate (0.1% of the weight of urethane acrylate prepolymer), pay attention to control the dropping speed, add it at a speed of 1g / min, after reacting for 3h, it will be dissolved in The mixed solution of bisphenol A and 2,2-dimethylolpropionic acid in N,N-dimethylformamide and acetone is added to the reaction kettle, and the reaction is continued, during which samples are taken to measure the content of -NCO groups until the theoretical value is reached. The first step reaction ends;

[0033] (2) The temperature of the above-mentioned intermediate product is lowered to 45° C., and hydroxypropyl acrylate, hydroxypropyl methacrylate and p-hydr...

Embodiment 3

[0036] (1) Add measured polyethylene glycol, polyethylene glycol and castor oil in sequence in the reactor, stir and raise the temperature to 115°C, dehydrate under reduced pressure for 2 hours, then cool down to 65°C, then gradually add p-benzene The mixture of diisocyanate, 4,4'-diphenylmethane diisocyanate and dibutyltin dilaurate (0.1% of the weight of urethane acrylate prepolymer), pay attention to control its dropping speed, add at a speed of 1g / min, react After 3 hours, add the mixed solution of N,N-dimethylformamide and acetone dissolved in bisphenol A and 2,2-dimethylolpropionic acid into the reaction kettle, and continue the reaction, during which time samples are taken to measure the -NCO group content until reaching the theoretical value, the first step reaction ends;

[0037] (2) Lower the temperature of the above-mentioned intermediate product to 45°C, and add hydroxybutyl acrylate, hydroxybutyl methacrylate and hydroquinone (0.05% of the weight of hydroxybutyl a...

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Abstract

The invention belongs to the field of UV-cured high molecular materials, and particularly discloses castor oil-based UV-cured polyurethane acrylate and a preparation method and application thereof. The method comprises the steps that dihydric alcohol and castor oil are subjected to decompression dehydration, a mixture of diisocyanate and a catalyst is added, a reaction is conducted for 2 h-3 h, a N,N-dimethyl formamide and acetone mixed solution dissolving with bisphenol A and 2,2-dimethylolpropionic acid is added, and an intermediate product is obtained; a mixture of hydroxyalkyl methacrylate or hydroxyalkyl acrylate and a polymerization inhibitor is added under stirring, a reaction is conducted for 2 h-3 h, and castor oil-based UV-cured polyurethane acrylate is obtained. According to castor oil-based UV-cured polyurethane acrylate and the preparation method and application thereof, the castor oil serves as a polyurethane raw material, and positive reference values for relieving pressure of petrochemical engineering, widening application of natural oil products and increasing the added value of the natural oil products are achieved; due to the fact that the castor oil is introduced, and bisphenol A has a high insulating property, prepared castor oil-based UV-cured polyurethane acrylate has a good low-temperature property, hydrolysis resistance and a good electrical insulating property.

Description

technical field [0001] The invention belongs to the field of UV-curable polymer materials, and in particular relates to a castor oil-based UV-curable polyurethane acrylate and a preparation method and application thereof. Background technique [0002] With the increasing number of multimedia information devices, touch screens have been used more and more in various fields because of their advantages such as firmness and durability, fast response, space saving, and easy communication. The key material of the touch screen is the transparent conductive coating material indium tin oxide (ITO) weak conductor, which is the main material used in all resistive technology touch screens and capacitive technology touch screens. In the production process of the touch screen, ITO is plated on the substrate After the film, various processing procedures are required. At this time, it is necessary to screen-print UV light-curable insulating ink on the insulation, protection and other relate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/32C08G18/42C08G18/48C08G18/66C08G18/67C08G18/75
CPCC08G18/3215C08G18/36C08G18/4018C08G18/4238C08G18/4825C08G18/4833C08G18/6607C08G18/672C08G18/755
Inventor 袁腾杨卓鸿黄家健周闯周健
Owner GUANGDONG LANYANG SCI & TECH
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