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

High-molecular-weight and ultrahigh-molecular-weight maleic anhydride-styrene monomer alternating copolymer and preparation method thereof

An alternating copolymer and ultra-high molecular weight technology, which is applied in the field of maleic anhydride-styrene monomer alternating copolymer and its preparation, can solve the problems of upper limit temperature limitation and the like, and achieves easy operation, simple post-processing process, Conducive to the effect of industrial application and commercial promotion

Active Publication Date: 2020-06-12
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since SMA is an amorphous copolymer, the upper limit temperature of SMA is limited (Polymer Chemistry, 2010, 1,558-562)

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
  • High-molecular-weight and ultrahigh-molecular-weight maleic anhydride-styrene monomer alternating copolymer and preparation method thereof
  • High-molecular-weight and ultrahigh-molecular-weight maleic anhydride-styrene monomer alternating copolymer and preparation method thereof
  • High-molecular-weight and ultrahigh-molecular-weight maleic anhydride-styrene monomer alternating copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0067] The present invention also provides a kind of preparation method of maleic anhydride-styrene monomer alternating copolymer, comprising the following steps:

[0068] Under the action of Lewis acid and the condition of anhydrous and oxygen-free, maleic anhydride monomers and styrene monomers are copolymerized in a reaction medium to obtain alternating copolymers of maleic anhydride-styrene monomers.

[0069]In principle, the present invention has no particular limitation on the specific selection of the Lewis acid. Those skilled in the art can select and adjust according to the actual preparation situation, product performance and quality requirements. The present invention ensures that under the condition of high molecular weight, it has better The structure of strict alternating copolymerization increases the glass transition temperature of the alternating copolymer, which is more conducive to subsequent applications. The Lewis acid preferably includes alkyl aluminum, al...

Embodiment 1

[0093] Under anhydrous and oxygen-free conditions, maleic anhydride (3.6mmol, 0.353g), styrene (3.6mmol, 3.75g) and 1.5mL toluene were added to the reaction vessel, and after stirring at room temperature, triethylaluminum (0.2mL×0.5M) was injected into the reaction solution. Then, the polymerization reactor was placed in a 50° C. oil bath to react for 3.5 hours. Then, isopropanol was added to terminate the reaction, washed several times with isopropanol and diethyl ether, and dried in a vacuum oven at 60° C. to constant weight to obtain a white solid powder with a yield of 72.7%.

[0094] The maleic anhydride-styrene copolymer prepared in Example 1 of the present invention was characterized.

[0095] Gained polymkeric substance is through proton nuclear magnetic resonance spectrum, carbon spectrum, elemental analysis characterizes, shows maleic anhydride-styrene copolymer, maleic anhydride content 49.8mol%, Mw=129.4 * 10 4 g / mol, PDI = 1.36, Tg = 214.2.

Embodiment 2～31

[0097] Referring to Tables 1-4, Tables 1-4 are the polymerization conditions of Examples 1-31. Embodiments 2-31 except the conditions described in the table, other polymerization conditions are identical with embodiment 1.

[0098] Table 1

[0099]

[0100] PS: polymerization temperature, 50°C; polymerization time, 3.5 hours; amount of Lewis acid, 0.1 mmol.

[0101] Table 2

[0102]

[0103] PS: maleic anhydride, 3.6mmol; styrene, 3.6mmol; 100μAlEt 3 , 0.1 mmol.

[0104] table 3

[0105]

[0106]

[0107] PS: Tri-n-octyl aluminum AlOctly 3 The dosage is 0.1 mmol; the polymerization temperature is 50° C.; the polymerization time is 3.5 hours.

[0108] Table 4

[0109] Example Comonomer Yield(g) Conv.(%) M n (×10 4 )

m w (x10 4 )

m w / M n

T g (℃)

26 a 0.596 76.6 92.4 134.0 1.45 – 27 b 0.628 75.7 104.2 142.8 1.37 – 28 c 0.714 85.3 135.9 184.8 1.36 204 29 d 0.232 26.0 89.8 137.4 1.5...

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
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention provides a maleic anhydride-styrene monomer alternating copolymer. The maleic anhydride-styrene monomer alternating copolymer is obtained by copolymerizing maleic anhydride and styrene monomers, wherein the weight-average molecular weight of the alternating copolymer is greater than or equal to 309000. The maleic anhydride-styrene monomer strict type alternating copolymer obtained bythe invention has relatively high molecular weight, high glass-transition temperature and a relatively strict alternating structure, and has a wide application prospect in the aspect of thermoplasticengineering plastics. According to the preparation method provided by the invention, Lewis acid is used as an activating agent and can also catalyze maleic anhydride and styrene to be alternately copolymerized to generate the strict alternating copolymer. A polymerization reaction can be carried out within a wide temperature range, the process is simple, the operation is easy, the controllabilityis strong, the condition is mild, the cost is low, the environment-friendly effect is achieved, the post-treatment is simple and easy to implement, and the industrial application and commercialized popularization are facilitated.

Description

technical field [0001] The invention belongs to the technical field of maleic anhydride and styrene-based monomer copolymer materials, and relates to a maleic anhydride-styrene-based monomer alternating copolymer and a preparation method thereof, in particular to a high-molecular-weight and ultra-high-molecular-weight maleic acid Acid anhydride-styrene monomer alternating copolymer and its preparation method. Background technique [0002] Polyolefin polymer materials are widely used in agriculture, medical and health, military and people's daily life due to their high cost performance and excellent mechanical properties. However, the polyolefin molecular chain is mainly composed of carbon and hydrogen elements, and lacks polar groups, which limits the application of polyolefins in many fields. The introduction of polar groups into polyolefins can greatly improve the surface properties of polyolefins. , adhesion, printing and dyeing, dielectric properties, and the compatibil...

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): C08F212/08C08F222/08C08F212/12C08F212/14C08F4/52
CPCC08F4/52C08F212/08C08F212/12C08F212/14C08F222/08
Inventor 崔冬梅李世辉
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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