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

Method for preparing unsaturated polyester resin by using glycerol

A polyester resin, unsaturated technology, applied in the field of polymer materials, can solve the problem of high production cost, achieve the effect of low price, reduce production cost and wide source

Inactive Publication Date: 2019-01-15
惠州市固德尔合成材料有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the raw materials used in the production of unsaturated polyester resins come from the petrochemical industry, which are non-renewable resources. With the increase of market demand, the raw materials for the production of unsaturated polyester resins need to find alternatives with sufficient resources, such as ethylene glycol, Glycols such as propylene glycol and neopentyl glycol occupy a large proportion in their synthetic raw materials, and often need to be added in excess to ensure full reaction with anhydrides, and the production cost is high. Looking for a kind that can be used in the synthesis of unsaturated polyester resin Glycol raw material substitutes are an important research direction in this field

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Experimental device: use a 500ml four-necked ground flask as a reaction kettle, equipped with a temperature control device, a nitrogen supply device, a condensation reflux device, a vacuum device, a stirring device, and a thermometer; use a 500ml capacity three-necked ground flask as a dilution kettle , equipped with a temperature control device, a thermometer, and a stirring device.

[0019] experiment procedure:

[0020] S1. Add 15g of glycerin, 18g of benzoic acid, and 0.045g of catalyst into the reaction kettle, connect the nitrogen inlet pipe, and the nitrogen pump device rushes nitrogen into the reaction kettle at a speed of 0.5m3 / h, so that the reaction system is in a nitrogen atmosphere, and condenses Water is supplied to the reflux device, and the temperature is raised slowly at a rate of 20°C / h. At the same time, the stirring device is started to start stirring. When the distillation temperature of the condensing reflux device rises to 100°C, the distillation ...

Embodiment 2

[0025] The experimental device is the same as in Example 1.

[0026] experiment procedure:

[0027] S1. Add 17g of glycerin, 20g of benzoic acid, and 0.054g of catalyst into the reaction kettle, connect the nitrogen inlet pipe, and the nitrogen pump device rushes nitrogen into the reaction kettle at a speed of 0.5m3 / h, so that the reaction system is in a nitrogen atmosphere, and condenses Water is supplied to the reflux device, and the temperature is raised slowly at a rate of 20°C / h. At the same time, the stirring device is started to start stirring. When the distillation temperature of the condensing reflux device rises to 100°C, the distillation temperature is maintained at 100°C, and the temperature of the reactor is raised to 205°C to maintain a constant temperature. persistent response;

[0028] S2. After 2.6 hours of constant temperature reaction, the temperature of the reactor was lowered to 145°C, and 41g of maleic anhydride, 42.3g of phthalic anhydride, and 34.5g of...

Embodiment 3

[0032] The experimental device is the same as in Example 1.

[0033] experiment procedure:

[0034] S1. Add 18.6g of glycerin, 21.9g of benzoic acid, and 0.06g of catalyst into the reaction kettle, connect it to the nitrogen inlet pipe, and the nitrogen pump device rushes nitrogen into the reaction kettle at a speed of 0.5m3 / h, so that the reaction system is in a nitrogen atmosphere , supply water to the condensing reflux device, slowly heat up at a rate of 20°C / h, and start the stirring device at the same time to start stirring. When the distillation temperature of the condensing reflux device rises to 100°C, keep the distillation temperature at 100°C, and the temperature of the reactor is raised to 205°C. Maintain a constant temperature for continuous reaction;

[0035] S2. After 2.6 hours of constant temperature reaction, the temperature of the reactor was lowered to 145°C, and 42.1g of maleic anhydride, 41.5g of phthalic anhydride, and 37.8g of diethylene glycol were succ...

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 method for preparing unsaturated polyester resin by using glycerol, and the glycerol is used for replacing part of diols as a reaction matrix, and the unsaturated polyester resin with better heat resistance can be synthesized while the diols are replaced. The molecular chain of the glycerol is provided with three hydroxyl groups, and the heat resistance, weather resistance and impact strength of the synthetic unsaturated polyester resin are better than that of the unsaturated polyester resin produced by ethylene glycol; and the glycerol and benzoic acid are used as end-capping groups of linear molecular chains in the synthesis process, so that the synthesized unsaturated linear high-molecular compound can ensure good compatibility with styrene; the glycerol is wide in source and low in price, and the structure of the three hydroxyl groups can replace part of the diols with relatively high value to serve as a synthetic raw material of the unsaturated polyesterresin, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a method for preparing unsaturated polyester resin by using glycerin. Background technique [0002] Unsaturated polyester resin is the most commonly used type of thermosetting resin. It is a linear polymer formed by polycondensation of saturated dibasic acid, unsaturated dibasic acid and dibasic alcohol. It is formed by diluting cross-linking monomers or active solvents. A resin solution with a certain viscosity is often used as a substrate for coatings, glass fiber reinforced plastics and decorations, and has a good application prospect. Most of the raw materials used to produce unsaturated polyester resins come from the petrochemical industry and are non-renewable resources. With the increase in market demand, raw materials for the production of unsaturated polyester resins need to find alternatives with sufficient resources, such as ethylene glycol, Glyc...

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 Applications(China)
IPC IPC(8): C08F283/01C08F212/08C08G63/676C08G63/85
CPCC08F283/01C08G63/676C08G63/85C08F212/08
Inventor 张涛程炽能王陈禹
Owner 惠州市固德尔合成材料有限公司
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