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2-functionality-degree polyether urethane acrylate and preparation method and application thereof

A technology of urethane acrylate and isocyanate ethyl acrylate, applied in the field of materials, can solve the problems of difficult control of the production process, many steps in the reaction process, cumbersome and other problems, and achieve the effects of easy control, reduction of reaction steps and low viscosity

Inactive Publication Date: 2016-07-27
JIANGSU LITIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of diisocyanate and hydroxyethyl acrylate or hydroxypropyl acrylate to prepare trifunctional polyurethane acrylate, the reaction process has many steps and is relatively cumbersome, and the production process is not easy to control, and the risk of gelation may occur due to the existence of side reactions

Method used

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  • 2-functionality-degree polyether urethane acrylate and preparation method and application thereof
  • 2-functionality-degree polyether urethane acrylate and preparation method and application thereof
  • 2-functionality-degree polyether urethane acrylate and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] In the 1000mL four-necked flask, drop into 600 grams of polyether glycol (Jiangsu Haian Petrochemical Plant, Polyethylene Glycol PEG600, molecular weight 600), 282 grams (2mol) of isocyanate ethyl acrylate, 0.1 gram of catalyzer dibutyltin dilaurate, The polymerization inhibitor p-hydroxyanisole is 0.9 g, and the temperature is slowly raised to 80°C-85°C for 0.5-4 hours, and the temperature is kept for 3-5 hours, and the material is discharged, and the bifunctional polyether polyurethane acrylate with the structure shown in the following formula is obtained.

[0032]

[0033] R is: -(CH 2 CH 2 O) n CH 2 CH 2 -;

[0034] n=(600-62) / 44=12.2273.

Embodiment 2

[0036] In a 1000mL four-necked flask, drop into 500 grams of polyether glycol (the third petrochemical plant of Tianjin Petrochemical Company, polypropylene glycol Tdiol-1000, molecular weight 1000), 141 grams (1mol) of isocyanate ethyl acrylate, catalyst dibutyltin dilaurate 0.1 g, 0.7 g of the polymerization inhibitor p-hydroxyanisole, slowly heating up to 80°C-85°C for 0.5-4 hours, heat preservation and reaction for 3-5 hours, and then the two-functionality polycaprolactone with the structure shown in the following formula is obtained Polyurethane acrylate.

[0037]

[0038] R is:

[0039] n=(1000-76) / 58=15.9310.

Embodiment 3

[0041] In a 1000mL four-necked flask, 500 grams of polyether diol (Chongqing Chiyuan Chemical Co., Ltd., polytetrahydrofuran ether glycol PTMEG2000, molecular weight 2000), 70.5 grams (0.5 mol) of isocyanate ethyl acrylate, and 0.1 dibutyltin dilaurate as a catalyst gram, 0.6 grams of polymerization inhibitor p-hydroxyanisole, slowly warming up to 80 ℃ to 85 ℃ for 3 to 5 hours and discharging in 0.5 to 4 hours to prepare the 2-functionality polycaprolactone polyurethane with the structure shown in the following formula Acrylate.

[0042]

[0043] R is: -(CH 2 CH 2 CH 2 CH 2 O) n CH 2 CH 2 CH 2 CH2 -;

[0044] n=(2000-90) / 72=26.5278.

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Abstract

The invention relates to 2-functionality-degree polyether urethane acrylate and a preparation method and application thereof, and discloses low-viscosity 2-functionality-degree polyether urethane acrylate. The preparation method comprises the step that polyether diol and isocyanate ethyl acrylate react to prepare 2-functionality-degree polyether urethane acrylate. The invention further discloses application of 2-functionality-degree polyether urethane acrylate to preparation of UV coatings or ink or adhesives. Isocyanate ethyl acrylate is adopted for preparing polyether urethane acrylate, the reaction steps are reduced, the reaction process is simple and easy to control, the situation that gel is generated due to side reactions is not likely to happen, the polyether urethane acrylate product is low in viscosity and beneficial to construction and application to UV formula products, when polyether urethane acrylate is used for UV spraying, no solvent or little solvent is added, and the requirement for application to the low-viscosity coatings is met. After low-viscosity 2-functionality-degree UV photocuring polyether urethane acrylate is cured, the excellent performance of low-temperature flexibility, low-temperature impacts, bacterium resistance, hydrolysis resistance and the like is achieved, and 2-functionality-degree polyether urethane acrylate can be applied as a raw material of the UV coatings, the ink and the adhesives.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a 2-functionality polyether urethane acrylate and its preparation method and application, in particular to a low-viscosity 2-functionality polyether urethane acrylate and its preparation method and application. Background technique [0002] With the rapid development of science and technology and the strict restrictions on solvents in environmental protection regulations, UV light-curable polymer materials have attracted more and more attention. UV light-curing materials have excellent properties such as fast curing, low energy consumption, less pollution, and high efficiency, so they are widely used in coatings, printing, and electronics industries, and have developed rapidly in recent years. Polyurethane acrylate (PUA) is an important light-curable oligomer, which has excellent properties such as low irritation, fast curing speed, high transparency, tensile resistance, and high cohesive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/71C08G18/48C09D175/14
CPCC08G18/711C08G18/4825C08G18/4833C08G18/4854C08L2205/025C09D175/14C08L75/14
Inventor 胡剑飞张丽丽马怀祥
Owner JIANGSU LITIAN TECH
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