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

Inverse emulsion process of preparing amphoteric polymer

An amphoteric polymer and amphoteric monomer technology, applied in the field of water-soluble polymer synthesis, can solve the problems of low intrinsic viscosity of amphoteric polymers, difficult industrialization implementation, water solubility differences, etc., and achieves fast polymerization rate, high yield, molecular high quality effects

Inactive Publication Date: 2006-05-17
SHANDONG UNIV
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional preparation method of water-soluble amphoteric polymer usually adopts solution polymerization, uses conventional initiator, and there are many deficiencies in this preparation method, such as the amphoteric polymer intrinsic viscosity that makes is less (that is, molecular weight is small), solid Low content, slow polymerization rate, difference in water solubility and difficulty in industrial implementation, etc.

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
  • Inverse emulsion process of preparing amphoteric polymer
  • Inverse emulsion process of preparing amphoteric polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1. Preparation of amphoteric monomer DMPS

[0054] Weigh 20g of propane sultone and dissolve it in 60g of acetone, pour it into a 400mL four-necked bottle equipped with a condenser tube, a thermometer, a constant pressure dropping funnel and an electric stirrer, then put it in a constant temperature water bath at 30°C, and start stirring . Weigh 30g of DMAEMA and dissolve it in 40g of acetone, then pour it into a constant pressure dropping funnel and slowly drop it into a four-necked bottle for 2 hours, then raise the temperature to 35°C for 1 hour, stop the reaction, pour it into a Buchner funnel to filter, After rinsing three times with a little acetone, put into 50 ℃ of vacuum ovens and dry 4h, obtain white powdery product 46.4g, productive rate ≥ 92.8%, identify product as amphoteric monomer DMPS (such as figure 1 shown).

Embodiment 2

[0055] Embodiment 2. Preparation of amphoteric copolymer

[0056] Oil phase: Measure 20mL of cyclohexane, weigh 2.0g of Span 80 and dissolve it, add it to a four-neck flask equipped with a stirrer, condenser, nitrogen pipe and dropping funnel, and pass N under stirring. 2 Deoxygenation for half an hour. Water phase: weigh 9g AM and 8g DMPS and dissolve in 30mL water, then add 0.2mL (0.15mol L -1 ) of TMEDA and 0.2mL (0.15mol·L -1 ) DMAEMA solution, pass N 2 Deoxygenation for half an hour. In the case of high-speed stirring (speed ≥ 1100r / min), slowly add the water phase to the oil phase dropwise, 30 ~ 60min dropwise, and finally add KPS 0.065g (dissolved in 2mL water), stir quickly for 20min and then reduce the stirring speed Adjust to about 300r / min, and at the same time transfer to 30°C constant temperature water bath to react for 5h to obtain uniform viscous milky white latex. Precipitate with absolute ethanol, dry, and pulverize to obtain 15.6g of amphoteric copolymer...

Embodiment 3

[0057] Example 3. As described in Example 2, the difference is that the monomer feed ratio is AM 13g, DMPS 4g, and the amphoteric copolymer powder product 15.8g is obtained, and the intrinsic viscosity is 8.5dL g -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
Intrinsic viscosityaaaaaaaaaa
Intrinsic viscosityaaaaaaaaaa
Intrinsic viscosityaaaaaaaaaa
Login to View More

Abstract

The present invention is inverse emulsion process of preparing amphoteric polymer, and belongs to the field of water soluble polymer synthesizing technology. Amphoteric monomers DMPS and AM are polymerized in reverse emulsion with ternary composite oxidation-reduction initiating system comprising KPS, TMEDA and DMAEMA at normal temperature to obtain high molecular weight amphoteric water soluble polymer. The polymer has high water solubility, obvious í‹reverse electrolyte effectíŒ and good heat resistance and salt tolerance. Its emulsion may be used in oil field production, waste water treatment and other fields, and it may be further prepared into powdered product with wide application in medicine, daily chemical, water treatment, papermaking, oil field production and other fields.

Description

technical field [0001] The invention relates to a method for preparing high-molecular-weight amphoteric polymers through an inverse emulsion method, and belongs to the technical field of water-soluble polymer synthesis. Background technique [0002] Water-soluble zwitterionic polymers are macromolecules that contain both cationic and anionic charges on the same molecular chain. When the electrostatic charge on the molecular chain is negative, the polymer exhibits the characteristics of anionic polymer, otherwise, it exhibits the characteristic of cationic polymer. However, they have better salt and temperature resistance, good adsorption, shear resistance and acid and alkali resistance than anionic polymers or cationic polymers. Especially when the net charge on the molecular chain is zero, the polymer solution exhibits an obvious "reverse polyelectrolyte effect", that is, adding inorganic salts to the polymer solution will not decrease the vi...

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): C08F220/56C08F2/22C08F4/40
Inventor 谭业邦徐桂英韩玉贵
Owner SHANDONG UNIV
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