Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of glycidyl acrylate

A technology of glycidyl ester and acrylic acid, which is applied in the direction of organic chemistry, can solve the problems of complicated water and great influence on alkali production rate, etc., and achieve the effect of simple operation process, good economic and social benefits, and less dosage

Active Publication Date: 2014-07-16
湖南罗比特新材料有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The esterification ring-closing method is simple to operate, but the disadvantage is that the amount of alkali and the introduction of water have a great impact on the yield, and the water in the separated product is very complicated.

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
  • Preparation method of glycidyl acrylate
  • Preparation method of glycidyl acrylate
  • Preparation method of glycidyl acrylate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Add 72 parts of acrylic acid, 89 parts of epichlorohydrin, 0.16 part of triethylamine, and 0.16 part of p-hydroxyanisole by weight in a container equipped with a stirrer, a thermometer and a feeding device, and control it at 70°C Disperse for 1 hour; heat up to 100°C; control at 100°C, react for 3 hours, discharge and check the yield. The detection method of yield (all the following examples are the same) was determined by gas chromatography (Shimadzu GC-9A gas chromatograph, thermal conductivity detection, injection volume: 0.5 μL). The yield was determined to be 90.5%.

Embodiment 2

[0018] Example 2: Add 72 parts of acrylic acid, 92 parts of epichlorohydrin, 0.50 part of triethylamine, and 0.15 part of p-hydroxyanisole by weight in a container equipped with a stirrer, a thermometer and a feeding device, and control it at 70°C Disperse for 1 hour; heat up to 100°C; control at 100°C, react for 3 hours, discharge and check the yield. The yield was determined to be 93.2%.

Embodiment 3

[0019] Example 3: Add 72 parts of acrylic acid, 95 parts of epichlorohydrin, 1.00 part of triethylamine, and 0.33 part of p-hydroxyanisole by weight in a container equipped with a stirrer, a thermometer and a feeding device, and control it at 80°C Disperse for 1.5 hours; heat up to 110°C; control at 110°C, react for 4 hours, discharge and check the yield. The measured yield was 96.0%.

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 a preparation method of glycidyl acrylate. According to the preparation method, the reactants are acrylic acid and epoxy chloropropane, the catalyst is triethylamine, and the polymerization inhibitor is p-hydroxyanisole. The preparation method comprises the following steps: mixing the polymerization inhibitor, catalyst and reactants, dispersing, and heating to react, wherein under the action of the p-hydroxyanisole, the epoxy chloropropane and triethylamine are subjected to nucleophilic substitution reaction to generate ammonium chloride, and the acrylic acid and carbon positive cations in the ammonium chloride are subjected to esterification reaction to generate the glycidyl acrylate. The product conversion rate is high, however, the production technique consumes fewer raw materials, the operational process is simple and does not need after treatment, and thus, the invention has high economic benefit and social benefit.

Description

technical field [0001] The invention relates to a preparation method of glycidyl acrylate. Background technique [0002] Glycidyl acrylate (GA) is a difunctional monomer with relatively higher reactivity than glycidyl methacrylate (GMA). Its molecular formula has vinyl and epoxy groups at the same time, which can carry out different reactions respectively. When initiated with a free radical initiator, the double bond can be opened and other acrylate monomers can be copolymerized to form a linear polymer with epoxy groups. The bifunctional structure of GA itself enables the acrylate polymer to be further cross-linked into a network structure, and its products have excellent weather resistance, UV resistance, water resistance and heat resistance. Therefore, it has been widely used in many fields such as photosensitive materials, organic synthesis, polymer synthesis and polymer modification. [0003] The traditional synthesis methods mainly include phase transfer method and ...

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): C07D303/16C07D301/30
Inventor 刘群俊全春喜柴超雷嘉
Owner 湖南罗比特新材料有限公司