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

A kind of acid anhydride polymer chain extender and preparation method thereof

A technology of chain extender and polymer, which is applied in the field of chain extender and its preparation, can solve the problems of unstable improvement of polyester performance, poor water resistance, easy local gel point and partial decomposition, etc. Good capacity, good chain extension effect and stability, good thermal stability effect

Active Publication Date: 2021-12-28
嘉兴华雯化工股份有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the chain extenders on the market mainly include oxazolines, epoxy resins, isocyanates, acid anhydrides and other low-molecular-weight organic compounds. Small-molecular chain extenders have poor water resistance and are prone to partial gelation during extrusion production. Disadvantages such as point and local decomposition, instability to the improvement of polyester performance
The above shortcomings have seriously affected the recycling rate of polyester and polyamide engineering plastics and the development of environmentally friendly polymer materials

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

example 1

[0020] Example 1: Pour 15g of maleic anhydride and 75g of styrene into a 200ml one-necked flask, and the maleic anhydride is completely dissolved in an oil bath at 40°C to make a maleic anhydride styrene solution; in a 500ml three-necked flask, add 120g of styrene, Add 15g of methyl acrylate and 5g of antioxidant at the same time, then add the above-mentioned completely dissolved maleic anhydride styrene solution, gradually raise the temperature to 110°C, react for 8h, add 4g of TBC to terminate the reaction, and then carry out vacuum desorption at 210°C Volatilize, control the vacuum degree at 0.1MPa±0.02MPa, the devolatilization time is 3-5min, cool the sample in pure water, dry at 80°C for 15h to obtain 90.2g of finished product.

[0021] The acid anhydride polymer chain extender of Example 1 is applied to the extrusion processing of PA6 reclaimed material, and the addition amount is 1 part. After extrusion, the melt index of PA6 reclaimed material drops from 195g / 10min to 8...

example 2

[0022] Example 2: Pour 20g of maleic anhydride and 90g of styrene into a 200ml one-necked flask, and the maleic anhydride is completely dissolved in an oil bath at 50°C to make a maleic anhydride styrene solution; in a 500ml three-necked flask, add 90g of styrene, Add 20g of methyl acrylate and 5g of antioxidant at the same time, then add the above-mentioned completely dissolved maleic anhydride styrene solution, gradually raise the temperature to 125°C, react for 6h, add 5g of TBC to terminate the reaction, and then carry out vacuum desorption at 210°C Volatilize, control the vacuum degree at 0.1MPa±0.02MPa, the devolatilization time is 3-5min, cool the sample in pure water, dry at 80°C for 15h to obtain 94.7g of finished product.

[0023] The acid anhydride polymer chain extender of Example 2 is applied to the extrusion modification of PBT recycled materials and glass fibers, and the addition amount is 2 parts, and then the glass fiber-reinforced PBT recycled materials obtain...

example 3

[0024] Example 3: Pour 24g of maleic anhydride and 96g of styrene into a 200ml single-necked flask, and the maleic anhydride is completely dissolved in an oil bath at 50°C to make a maleic anhydride styrene solution; in a 500ml three-necked flask, add 80g of styrene, Add 10 methyl methacrylate, 5 g butyl methacrylate and 5 g antioxidant at the same time, then add the above-mentioned completely dissolved maleic anhydride styrene solution, gradually heat up to 110 ° C, react for 5 h, add TBC 6 g, terminate the reaction, Then, vacuum devolatilization was carried out at 210°C, the vacuum degree was controlled at 0.1MPa±0.02MPa, the devolatilization time was 3-5min, the sample was cooled in pure water, and dried at 80°C for 15h to obtain 87.6g of the finished product.

[0025] The acid anhydride polymer chain extender of Example 3 is applied to the extrusion modification of PA / PET alloy material, and the addition amount is 2 parts. Compared with the blank experiment group, the melti...

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
melt flow indexaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an acid anhydride polymer chain extender. The synthetic formula raw materials include the following components by weight: styrene: 85-95 parts, maleic anhydride: 5-15 parts, third monomer: 0.5 -1 part, antioxidant: 0.1-1 part, terminator: 0.1-1 part; the third monomer is methyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate one or more of. At the same time, the preparation method of the acid anhydride polymer chain extender is disclosed. Compared with chain extenders with low molecular weight such as mainstream oxazolines, epoxy resins, isocyanates, and acid anhydrides on the market, the acid anhydride polymer chain extender of the present invention has a higher molecular weight, so it has better thermal stability. Stability, no gel point during use. The acid anhydride polymer chain extender has a high content of reactive groups, so it has better chain extension effect and stability. In addition, the acid anhydride polymer chain extender contains a special acrylate monomer, which has better compatibility with polyester materials.

Description

technical field [0001] The invention belongs to the technical field of chain extenders and preparation methods thereof, in particular to an acid anhydride polymer chain extender and a preparation method thereof. The chain extender can be used in polymer materials such as polyamide and polyester to increase its intrinsic viscosity and molecular weight. Background technique [0002] With the rapid development of the polymer industry, engineering plastics such as polyamide and polyester are widely used in people's production and life. Due to the stable chemical properties of engineering plastics such as polyamide and polyester, it is difficult to degrade by themselves under natural conditions, and a large number of waste plastic products have caused serious environmental problems. Traditional treatment methods will directly or indirectly cause secondary pollution. Therefore, research on more effective and environmentally friendly polyester and polyamide engineering plastic rec...

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): C08F212/08C08F222/08C08F220/14C08F220/18C08L77/02C08L67/02C08L77/00C08L35/06C08K7/14
CPCC08F212/08C08L77/02C08L67/02C08L77/00C08L2205/03C08L35/06C08K7/14C08F222/08C08F220/14C08F220/1804
Inventor 曾王杰李昌鸿田冶
Owner 嘉兴华雯化工股份有限公司
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