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

Vinyl monomer modified polyester resin, low shrinkage agent and preparation method

A vinyl monomer and modified polyester technology, applied in the field of low shrinkage agent and its preparation, vinyl monomer modified polyester resin, can solve the problem of poor stability, weak thickening ability, low shrinkage agent coloring performance To achieve the effect of widening the selection range, improving colorability, excellent mechanical properties and moisture resistance

Active Publication Date: 2020-12-18
CHANGZHOU HUAKE POLYMERS
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the defects of poor coloring performance, weak thickening ability and poor stability of existing low-shrinkage agents, and provide a vinyl monomer modified polyester resin, low-shrinkage agent and its preparation method

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
  • Vinyl monomer modified polyester resin, low shrinkage agent and preparation method
  • Vinyl monomer modified polyester resin, low shrinkage agent and preparation method
  • Vinyl monomer modified polyester resin, low shrinkage agent and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A vinyl monomer-modified polyester resin and a low-shrinkage agent are prepared according to the following raw material formula and preparation method.

[0051] The formula is:

[0052]

[0053] The preparation method steps are as follows:

[0054] (1) Add polyhydric alcohol into the reaction kettle with heating device and stirring device, feed nitrogen, start stirring, heat up to 100°C until the material melts, then add saturated polybasic acid or acid anhydride, unsaturated polybasic acid or acid anhydride in sequence And the esterification catalyst, continue to heat up the water outlet under the protection of nitrogen, the distillation head temperature is 90 °C, the reaction temperature is 200 °C, and the acid value is 8 mgKOH / g;

[0055] (2) Then lower the temperature to 110°C, add a mixed solution of vinyl monomer (styrene, vinyl acetate, vinylglycine) and initiator dropwise to the reaction kettle, add dropwise for 1 hour, and keep warm at 110°C for 4h, Prompt...

Embodiment 2

[0058] A vinyl monomer-modified polyester resin and a low-shrinkage agent are prepared according to the following raw material formula and preparation method.

[0059] The formula is:

[0060]

[0061]

[0062] The preparation method steps are as follows:

[0063] (1) Add polyhydric alcohol into the reaction kettle with heating device and stirring device, feed nitrogen, heat up and heat until the material in the kettle melts, start stirring, add saturated polybasic acid or acid anhydride, unsaturated polybasic acid or acid anhydride and Esterification catalyst, continue to heat up the water outlet under the protection of nitrogen, the head temperature is 100°C, the reaction temperature is 230°C, and the acid value is 6mgKOH / g;

[0064] (2) Then lower the temperature to 140°C, add a mixture of vinyl monomers (methyl methacrylate, α-methylstyrene, vinyl acetate, butyl acrylate, methacrylic acid) and initiators dropwise into the reactor The solution was added dropwise for...

Embodiment 3

[0067] A vinyl monomer-modified polyester resin and a low-shrinkage agent are prepared according to the following raw material formula and preparation method.

[0068] The formula is:

[0069]

[0070]

[0071] The preparation method steps are as follows:

[0072] (1) Add polyhydric alcohol into the reaction kettle with heating device and stirring device, feed nitrogen, heat up and heat until the material in the kettle melts, start stirring, add saturated polybasic acid or acid anhydride, unsaturated polybasic acid or acid anhydride and Esterification catalyst, continue to heat up the water outlet under the protection of nitrogen, the distillation head temperature is 95°C, the reaction temperature is 140°C, and the acid value is 7mgKOH / g;

[0073] (2) Then the temperature was lowered to 90°C, and the mixed solution of vinyl monomer and initiator was added dropwise to the reaction kettle for 2 hours, and kept at 90°C for 4 hours to obtain 1035g of vinyl monomer modified ...

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
acid valueaaaaaaaaaa
shrinkageaaaaaaaaaa
Login to View More

Abstract

The invention discloses a vinyl monomer modified polyester resin, a low shrinkage agent and a preparation method. The preparation method of vinyl monomer-modified polyester resin is as follows: Polyhydric alcohol, saturated polybasic acid or acid anhydride and unsaturated polybasic acid or acid anhydride are polymerized under the action of catalyst to obtain unsaturated polyester resin; Under the action of the vinyl monomer and the unsaturated polyester resin, it can be reacted. The preparation method of the low shrinkage agent is as follows: mixing vinyl monomer modified polyester resin, styrene and polymerization inhibitor. The low-shrinkage agent prepared by the vinyl monomer-modified polyester resin in the present invention has excellent low-shrinkage, toughness, excellent mechanical strength, and water resistance, and can significantly improve the colorability of the product and solve the bleeding of the product It can effectively thicken the product with various resins to achieve the SMC / BMC construction viscosity.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a vinyl monomer modified polyester resin, a low shrinkage agent and a preparation method. Background technique [0002] The invention of composite materials is a major innovation in the history of human science and technology, which has penetrated into all walks of life and changed the way of life of human beings. Among them, molded materials have the characteristics of high efficiency and one-time molding, and are becoming more and more popular in the field of composite materials. However, unsaturated resins will shrink by 3% to 10% during the molding process, which brings many problems to product production. , such as product bending, cracks, dimensional accuracy is difficult to control, surface smoothness is poor, and resin and glass fiber peel off resulting in reduced strength, etc. [0003] Adding thermoplastic low shrinkage agent (LSA) is the most effective way to solve th...

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): C08F283/01C08F212/08C08F212/12C08F220/54C08F220/18C08F220/28C08F220/34C08F220/56C08F220/14C08L67/06C08L51/08C08L63/10
CPCC08F283/01C08L51/08C08L67/06C08L63/10C08F220/281C08F220/18C08F220/34
Inventor 蒋红娟钱永嘉周国友王凯陶威
Owner CHANGZHOU HUAKE POLYMERS
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