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

Copolymerization reaction method for styrene/maleic anhydride

A technology for maleic anhydride and copolymerization, which is applied in the field of styrene/maleic anhydride copolymerization and achieves the effects of fast reaction rate, easy process control and simple process

Active Publication Date: 2010-01-13
BEIJING UNIV OF CHEM TECH
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the disadvantages brought by the use of stabilizers in the traditional dispersion polymerization system, and provide a kind of preparation method of self-stabilized styrene / maleic anhydride copolymer colloidal dispersion system

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
  • Copolymerization reaction method for styrene/maleic anhydride
  • Copolymerization reaction method for styrene/maleic anhydride
  • Copolymerization reaction method for styrene/maleic anhydride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The molar ratio of MAn and St is 1:1, wherein MAn is 0.3065g and St is 0.325g; the initiator is azobisisobutyronitrile AIBN, 0.05g; the medium is isoamyl acetate, 45mL. Heating in a water bath and reacting at a temperature of 70° C. for 6 hours to obtain PMS microspheres of maleic anhydride / styrene alternating copolymer. Average particle size (Dn), dispersion coefficient (U) and polymerization yield (C p ), and the number average molecular weight (Mn) results of the polymer are shown in Table 1.

Embodiment 2

[0050] The molar ratio of MAn and St is 1:1, where MAn is 0.613g and St is 0.325g; the initiator is AIBN, 0.04g; the medium is isoamyl acetate, 45mL. Adopt water-bath heating, react 6 hours under the temperature of 70 ℃, obtain the average particle diameter (Dn) of PMS copolymer microsphere, dispersion coefficient (U) and polymerization yield (C p ), and the number average molecular weight (Mn) results of the polymer are shown in Table 1.

Embodiment 3

[0052] The molar ratio of MAn and St is 1:1, wherein MAn is 1.226g and St is 1.3g; the initiator is AIBN, 0.04g; the medium is isoamyl acetate, 45mL. Adopt water-bath heating, react 6 hours under the temperature of 70 ℃, obtain the average particle diameter (Dn) of PMS copolymer microsphere, dispersion coefficient (U) and polymerization yield (C p ), and the number average molecular weight (Mn) results of the polymer are shown in Table 1.

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

A copolymerization method of phenylethene / maleic anhydride belongs to polymer preparation technical field, for resolving the defect caused by stabilizer in traditional disperse polymerization system, which comprises under nitrogen gas protection, dissolving monomer Man and St, inducer organic hyperoxide or azocompound of suitable ratio in organic acid alkyl ester, the mixture of aromatics and organic acid alkyl ester or the mixture of ketone and alkane to react for 1 / 4-12h at 60-90 DEG C to obtain the disperse system of polymer microballoon, wherein the average particle diameter of microballoon in the disperse system is 90-1715mm, the disperse factor is 1.04-1.004 and the number average molecular weight is 80000-300000g / mol. The invention has the advantages of eliminated stabilizer, simple process, low cost, clean polymer microballoon or particle surface, controllable particle diameter, controllable shape and narrow granularity distribution.

Description

technical field [0001] The invention relates to a method for copolymerization of maleic anhydride (MAn) and styrene (St), in particular to a method for obtaining a self-stable alternating copolymer dispersion system after copolymerization of MAn and St. Background technique [0002] Styrene (St), maleic anhydride (MAn) copolymer is a new type of polymer material with excellent performance and low price. It is widely used in water treatment agents, latex coatings, adhesive modifiers, and pigment dispersions. agent, emulsifier for floor polishing, emulsifier for pesticide, curing agent for epoxy resin, etc. [0003] In addition, a hot spot in the field of functional polymer materials is the preparation and application of polymer microspheres. Nanoscale to micron-scale polymer microspheres have large specific surface area, strong adsorption, strong coagulation, and strong surface reaction ability. Specific properties, widely used in many high-tech fields such as analytical che...

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): C08F212/08C08F222/08C08F2/14
Inventor 邓建元刘振杰杨万泰
Owner BEIJING UNIV OF CHEM TECH
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