Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of polyfunctional polyurethane acrylate and its preparation method and application

A technology of urethane acrylate and hydroxy acrylate, which is applied in the field of multifunctional urethane acrylate and its synthesis, can solve problems such as decreased adhesion, poor hardness, and increased brittleness of the coating film, achieving enhanced adhesion, less side reactions, The effect of simple synthesis method

Active Publication Date: 2017-01-18
CHANGXING PHOTOELECTRIC MATERIAL +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low-functionality urethane acrylate has the defect of poor hardness. Although multi-functional urethane acrylate generally has a higher degree of crosslinking, water resistance and corrosion resistance, it also increases the brittleness and adhesion of the coating film. Defects such as drop

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of polyfunctional polyurethane acrylate and its preparation method and application
  • A kind of polyfunctional polyurethane acrylate and its preparation method and application
  • A kind of polyfunctional polyurethane acrylate and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Synthesis of semi-adducts

[0055] Under the protection of nitrogen, 116.12 grams of hydroxyethyl acrylate and 1.0451 grams of dibutyltin dilaurate were added dropwise to 233.4045 grams of isophorone diisocyanate, and the reaction temperature was maintained at 40 ° C for 2 hours to obtain ‐NCO semi-blocked semi Adduct (A). Take a sample to check the concentration of ‐NCO groups in the system to determine if the reaction is complete.

[0056] (2) Modification of glycidyl ether

[0057] Add 128.17 grams of 1,4-cyclohexanedimethanol glycidyl ether, 134.13 grams of dimethylol propionic acid and 0.6558 grams of catalyst triphenylphosphine into the reactor to raise the temperature to form a homogeneous phase, and control the temperature at 140 ° C for 2.5 h, stop the reaction when the acid value drops below 3% of the initial acid value of the system, and react to obtain a modified glycidyl ether (B) containing 6 hydroxyl groups in the molecular structure. Take a sample...

Embodiment 2

[0063] (1) Synthesis of semi-adducts

[0064] Under the protection of nitrogen, 130.14 grams of hydroxypropyl acrylate and 1.4315 grams of dibutyltin dilaurate were added dropwise to 174.08 grams of toluene diisocyanate TDI, and the reaction temperature was maintained at 50 ° C for 1 hour to obtain the semi-addition of ‐NCO semi-blocking Object (A). Take a sample to check the concentration of ‐NCO groups in the system to determine if the reaction is complete.

[0065] (2) Modification of glycidyl ether

[0066] Add 101.18 grams of 1,4-butanediol diglycidyl ether, 148.16 grams of dimethylol butyric acid and 2.0934 grams of catalyst triphenylphosphine into the reactor to raise the temperature to form a homogeneous phase, and control the temperature at 130 ° C for 3.5 hours. The reaction is stopped when the acid value drops below 3% of the initial acid value of the system, and the modified glycidyl ether (B) containing 6 hydroxyl groups in the molecular structure is obtained by...

Embodiment 3

[0072] (1) Synthesis of semi-adducts

[0073] Under the protection of nitrogen, 130.14 grams of hydroxyethyl methacrylate and 1.2363 grams of dibutyltin dilaurate were added dropwise to 176.61 grams of hexamethylene diisocyanate, and the reaction temperature was kept at 45 °C for 1.5 hours to obtain ‐NCO semi-sealed Terminal half adduct (A). Take a sample to check the concentration of ‐NCO groups in the system to determine if the reaction is complete.

[0074] (2) Modification of glycidyl ether

[0075] Add 120.90 grams of 1,6 hexanediol diglycidyl ether, 134.13 grams of dimethylol propionic acid and 1.9128 grams of catalyst triphenylphosphine into the reactor and raise the temperature to form a homogeneous phase. Control the temperature at 140°C for 3.0 hours until When the acid value drops below 3% of the initial acid value of the system, the reaction is stopped, and the modified glycidyl ether (B) containing 6 hydroxyl groups in the molecular structure is obtained by the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses multifunctional urethane acrylate as well as a preparation method and an application thereof. The preparation method comprises the steps: under the protection of nitrogen, dropwise adding acrylic acid hydroxy ester or methacrylic acid hydroxy ester and dibutyltin dilaurate serving as a catalyst to diisocyanate, and reacting to obtain a semi-additive product of the diisocyanate; mixing diglycidyl ether, hydroxy acid and triphenylphosphine serving as a catalyst and heating to form a homogenous phase, thereby obtaining modified glycidyl ether comprising six hydroxyl radicals in a molecular structure; adding the modified glycidyl ether comprising six hydroxyl radicals and the semi-additive product of the diisocyanate as well as a polymerization inhibitor to a reactor, heating, dropwise adding the dibutyltin dilaurate, reacting to obtain the multifunctional urethane acrylate comprising the hydroxyl radicals. The multifunctional urethane acrylate formed by introducing a certain amount of hydroxyl groups to the molecular structure is applied to paint films, so that the paint films have excellent adhesive force, flexibility and tensile strength.

Description

technical field [0001] The invention relates to a multifunctional urethane acrylate, in particular to a multifunctional urethane acrylate containing multiple hydroxyl groups and its synthesis method and application. Background technique [0002] In recent years, with the rapid development of the industry, the deterioration of the ecological environment has become more and more noticeable; radiation-curable coatings fully comply with the 5 "E" principles and are a major direction for the future development of the coatings industry. Radiation curable coatings refer to coatings that can be cured almost immediately when exposed to electromagnetic radiation, eg in the ultraviolet region. The rapid curing of such coatings makes them attractive for a variety of applications. Radiation-curing coatings primarily proceed via a free-radical polymerization mechanism. Radiation curable materials must therefore contain groups capable of free radical curing. Typically these functional g...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07C269/02C07C271/20C07C271/28C07C271/24C09D4/02
Inventor 周婵华杨明雄郑裕正涂伟萍王邦清
Owner CHANGXING PHOTOELECTRIC MATERIAL
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More