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

Preparation method of styrene-maleic anhydride-nitrophenyl maleimide terpolymer

A technology of maleimide terpolymer and maleimide, which is applied in the field of preparation of styrene-maleic anhydride-nitrophenylmaleimide terpolymer, can solve a large number of solvent safety problems With problems such as environmental protection, difficulty in industrial production, and excessive use of solvents, it achieves the effects of obvious heat resistance, low residual monomers, and high glass transition temperature

Pending Publication Date: 2018-12-18
嘉兴华雯化工股份有限公司
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current heat-resistant agents are copolymers containing NPMI, and the most commonly used synthetic methods include the following three: (1) Preparation of ABS heat-resistant agent styrene-nitrogen by imidizing styrene-maleic anhydride copolymers by solution method Phenylmaleimide-maleic anhydride terpolymer, but this method has complex process for preparation, the highest solid content can only reach 35%, low production efficiency, and safety and environmental protection problems such as a large amount of solvent produced in the preparation process, Difficult to achieve industrial production
(2) Prepare styrene, NPMI or maleic anhydride directly into ABS heat-resistant agent styrene-NPMI binary copolymer or styrene-NPMI-maleic anhydride terpolymer by solution method, which also has a production process Environmental problems such as excessive solvent usage
(3) Styrene and NPMI are directly prepared into ABS heat-resistant agent styrene-NPMI binary copolymers by means of suspension polymerization, which is also the most commonly used industrial production method at present, but this method has poor product purity and poor manufacturing process A large amount of waste water is generated in the process, and the product is easy to absorb water when it is stored in powder form.

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 styrene-maleic anhydride-nitrophenyl maleimide terpolymer
  • Preparation method of styrene-maleic anhydride-nitrophenyl maleimide terpolymer
  • Preparation method of styrene-maleic anhydride-nitrophenyl maleimide terpolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Firstly, 20 parts of styrene and 0.1 part of dodecyl mercaptan are added to the reactor, the temperature of the reactor is 115° C., and the pressure is normal pressure. Dissolve 4 parts of maleic anhydride and 10 parts of nitrogen phenyl maleimide in proportion to 64 parts of styrene and 30 parts of ethylbenzene to form a mixed solution, and then drop the mixed solution into the reaction kettle. When the conversion rate of the polymerization reaction reaches 40%, inject the resulting polymer-containing solution into a vacuum devolatilizer, and vacuum devolatilize under the conditions of 250°C and 30KPa to obtain styrene, maleic anhydride, and nitrogen benzene Base maleimide terpolymer A. Then copolymer A and ABS (Shanghai Gaoqiao 8391) were mixed and granulated in a ratio of 20:80 to obtain heat-resistant ABS1. The properties of copolymer A and ABS1 are shown in Table 1 and Table 2 respectively, and the infrared spectrogram of copolymer A is shown in figure 1 .

Embodiment 2

[0020] Firstly, 10 parts of styrene and 0.5 parts of dodecyl mercaptan are added to the reactor, the temperature of the reactor is 140° C., and the pressure is normal pressure. Dissolve 7 parts of maleic anhydride and 7 parts of nitrogen phenyl maleimide in proportion to 76 parts of styrene to form a mixed solution, and then drop the mixed solution into the reaction kettle. When the conversion rate of the polymerization reaction reaches 70%, inject the resulting polymer-containing solution into a vacuum devolatilizer, and vacuum devolatilize under the conditions of 220°C and 10KPa to obtain styrene, maleic anhydride, and nitrogen benzene Base maleimide terpolymer B. Then copolymer B and ABS (Shanghai Gaoqiao 8391) were mixed and granulated at a ratio of 20:80 to obtain heat-resistant ABS2. The properties of copolymer B and ABS2 are shown in Table 1 and Table 2, respectively.

Embodiment 3

[0022] Firstly, 10 parts of styrene are added into the reactor, the temperature of the reactor is 90°C, and the pressure is normal pressure. Dissolve 1 part of maleic anhydride and 15 parts of nitrogen phenyl maleimide in proportion to 74 parts of styrene and 10 parts of ethylbenzene to form a mixed solution, and then drop the mixed solution into the reaction kettle. When the conversion rate of the polymerization reaction reaches 50%, inject the resulting polymer-containing solution into a vacuum devolatilizer, and vacuum devolatilize under the conditions of 200°C and 4KPa to obtain styrene, maleic anhydride, and nitrogen benzene Base maleimide terpolymer C. Then copolymer C and ABS (Shanghai Gaoqiao 8391) were mixed and granulated at a ratio of 20:80 to obtain heat-resistant ABS3. The properties of copolymer C and ABS3 are shown in Table 1 and Table 2 respectively.

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 styrene-maleic anhydride-nitrophenyl maleimide terpolymer and a preparation method thereof. The terpolymer is characterized by comprising the following components by weight percentage: 50-90 parts of styrene, 1-20 parts of maleic anhydride, and 10-30 parts of nitrophenyl maleimide. The glass transition temperature is 150-200DEG C, a bulk polymerization way is employed forpreparation, firstly part of the styrene is added into a reaction kettle, then a styrene solution with dissolved maleic anhydride and nitrophenyl maleimide is added dropwise into the reaction kettle,the temperature of the reaction kettle is 90-140DEG C, and the pressure is atmospheric pressure, after reaction to a certain degree, high temperature vacuum devolatilization is carried out to obtainthe terpolymer. Compared with the prior art, the preparation method provided by the invention has the advantages of simple process, no waste water, and environment-friendly production process, and theprepared product has high purity, and is suitable for use as a low odor and low emission heat resistant agent for vehicle ABS and household appliance ABS.

Description

technical field [0001] The invention relates to the field of synthesis of a styrene-based resin heat-resistant agent, in particular to a preparation method of a styrene-maleic anhydride-nitrophenylmaleimide terpolymer. Background technique [0002] ABS (styrene-acrylonitrile-butadiene) has both toughness and rigidity, and is widely used in automobiles, home appliances, electronic appliances and other fields. However, the long-term use temperature of ABS is only 80°C, which cannot meet the increasingly higher heat resistance requirements of automobiles and home appliances. Therefore, it is necessary to improve the heat resistance of ABS. [0003] At present, the most economical and largest way to improve the heat resistance of ABS is to improve the heat resistance of ABS by blending and granulating ABS with a polymer heat-resistant agent. Most of the current heat-resistant agents are copolymers containing NPMI, and the most commonly used synthesis methods include the follow...

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
IPC IPC(8): C08F212/08C08F222/06C08F222/40C08L35/06C08L55/02
CPCC08F212/08C08L35/06C08L55/02C08L2201/08C08F222/06C08F222/406
Inventor 李昌鸿朱延谭曾王杰田冶
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