Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of acid anhydride modified biphenyloxetane acrylate prepolymer

A technology of biphenyl oxetane acrylate and biphenyl oxetane, which is applied in the field of ultraviolet light curing, can solve the problem of reducing the overall performance of epoxy acrylate, the decrease in hardness and chemical resistance, light aging resistance and resistance to light. Problems such as poor xanthosis, low toxicity and mutagenicity, less irritation to glasses and skin, and good adhesion

Active Publication Date: 2020-07-14
武汉长盈鑫科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, epoxy acrylate has a high viscosity, high ring-opening temperature, high color number of the finished product, poor light aging resistance and yellowing resistance, and its cured product has a high cross-linking density and a three-dimensional network structure, resulting in high brittleness, Poor toughness limits its application to a large extent
In addition, due to the high viscosity, it is necessary to use a large amount of reactive diluent to dilute in order to meet the workability, which will reduce the overall performance of epoxy acrylate
Therefore, modified epoxy acrylate has always been a research hotspot. At present, the modification of epoxy acrylate mainly includes alcohol modification, acid or anhydride modification, polyurethane modification, etc. These technologies can improve the performance of epoxy acrylate to a certain extent. Toughness, but at the same time it will cause hardness and chemical resistance to decrease, and part of the modification process will cause the viscosity to increase again

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 preparation method of acid anhydride modified biphenyloxetane acrylate prepolymer
  • A kind of preparation method of acid anhydride modified biphenyloxetane acrylate prepolymer
  • A kind of preparation method of acid anhydride modified biphenyloxetane acrylate prepolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This example provides a method for preparing an anhydride-modified biphenyloxetane acrylate prepolymer. The steps include: adding 98g of maleic anhydride and 116g of hydroxyethyl acrylate to the flask, 0.04g 4-Dimethylaminopyridine, 0.17g of p-toluenesulfonic acid, 0.21g of p-hydroxyanisole, heated and stirred at 60°C for 4 hours to obtain the semi-addition of intermediate hydroxyacrylate and cyclic anhydride things. Add 410g of biphenyloxetane to the flask, add 3.12g of benzyltriethylammonium chloride, 3.12g of 2,6-di-tert-butyl-4-methylphenol, and react at 80°C After 5 hours, after the reaction was completed, vacuum degassing treatment was performed at 75° C. to obtain the final product with a viscosity of 620 mpa.s (60° C.). The product structure is:

[0036]

[0037] The infrared absorption spectrum of the product is attached figure 1 As shown in the figure, it can be seen from the figure that its molecular structure contains groups such as hydroxyl, double bo...

Embodiment 2

[0042] This example provides a method for preparing an anhydride-modified biphenyloxetane acrylate prepolymer. The steps include: adding 148g of phthalic anhydride and 130g of hydroxypropyl acrylate to a flask, 0.06g 4-Dimethylaminopyridine, 0.23g of p-toluenesulfonic acid, 0.28g of p-hydroxyanisole, heated and stirred at 70°C for 3h to obtain a semi-adduct of hydroxyacrylate and cyclic anhydride. The biphenyl oxetane of 410g is joined in the flask again, and add 2.06g benzyltriethylammonium bromide, 2.06g p-hydroxyanisole, and react at 85 ℃ for 4 hours, after the reaction finishes, Vacuum degassing treatment at 80°C to obtain the final product with a viscosity of 1630mpa.s (60°C).

Embodiment 3

[0044]This example provides a method for preparing an anhydride-modified biphenyloxetane acrylate prepolymer. The steps include: adding 178g of methylnadic anhydride and 144g of hydroxybutyl acrylate to the flask, 0.09g 4-Dimethylaminopyridine, 0.23g of p-toluenesulfonic acid, 0.32g of p-hydroxyanisole, heated and stirred at 60°C for 4h to obtain a semi-adduct of hydroxy acrylate and cyclic anhydride. Then 410g of biphenyl oxetane was added to the flask, and 3.66g of tetramethylammonium chloride, 1.66g of p-hydroxyanisole and 2.0g of 2,6-di-tert-butyl-4-methyl Base phenol, and react at 90°C for 3 hours. After the reaction, vacuumize and defoam at 85°C to obtain the final product with a viscosity of 1310mpa.s (60°C).

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

PropertyMeasurementUnit
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of an anhydride modified biphenyl oxetane acrylate prepolymer, which comprises the step of reacting biphenyl oxetane, hydroxy ester acrylate and a cyclic anhydride semi-addition product by the action of a catalyst to obtain the anhydride modified biphenyl oxetane acrylate prepolymer. The prepolymer obtained by the preparation method has the characteristics of low viscosity, good toughness, good heat resistance, low odor and low skin and eye irritation, has lower shrinkage and lower water absorption, has extremely good adhesion and levelling property, and is wider in application scope.

Description

technical field [0001] The invention relates to the field of ultraviolet curing technology, in particular to a preparation method of an anhydride-modified biphenyloxetane acrylate prepolymer. Background technique [0002] Epoxy acrylate (EA) is widely used in the field of UV curing, but currently it can be divided into bisphenol A type epoxy acrylate, novolac epoxy acrylate and epoxidized soybean oil acrylate according to the structure type on the market. Among them, bisphenol A type epoxy acrylate is used in the largest amount. Epoxy acrylate has the advantages of fast curing speed, high bonding strength, high hardness, high gloss and good chemical resistance. However, epoxy acrylate has high viscosity, high ring-opening temperature and high color number of the finished product, poor light aging resistance and yellowing resistance, and its cured product has a high crosslinking density and a three-dimensional network structure, resulting in high brittleness, Poor toughness...

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): C07C67/08C07C67/30C07C69/60C07C69/80C07C69/83C07C69/753C08G18/67
CPCC07C67/08C07C67/30C07C69/60C07C69/753C07C69/80C08G18/675
Inventor 黄星余晓梦皮亚斌高旭崔丽云万欢陶杜
Owner 武汉长盈鑫科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com