Unlock instant, AI-driven research and patent intelligence for your innovation.

Precipitation polymerization method for preparation of cation type polyelectrolyte

A technology of precipitation polymerization and polyelectrolyte, which is applied in the field of precipitation polymerization prepared by cationic polyelectrolyte, can solve the problems of difficult purification of polymerized products, high salt content of polymerized products, etc., and achieves simple post-processing steps, low energy consumption, Low salt effect

Inactive Publication Date: 2007-11-14
HEBEI UNIV OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings in the above method, the polymerization product has a large salt content and the polymerization product is not easy to purify, etc., the present invention proposes a method for preparing a pure cationic polyelectrolyte

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

Embodiment 1

[0023] Weigh 1g of methacryloyloxyethyltrimethylammonium chloride, 1g of acrylamide, add 14.6g of deionized water to dissolve, add 82.4g of potassium carbonate solution with a concentration of 53%, stir and dissolve evenly, and then add Each 0.02 g of anhydrous sodium sulfite and ammonium persulfate initiates monomer polymerization, reacts for 5 hours, vacuum suctions, washes the precipitate obtained with ethanol, until the silver nitrate solution with a concentration of 1% is added dropwise to the filtrate without white precipitation, and then proceeds Vacuum suction filtration, drying the obtained precipitate at 50-90° C. to directly obtain 1.6 g of granular product.

Embodiment 2

[0025] Except weighing 0.01g of acrylamide, the others were the same as in Example 1, and 0.6g of granular product was directly obtained.

Embodiment 3

[0027] Except that 2g of acrylamide was weighed, the others were the same as in Example 1, and 2.3g of granular product was directly obtained.

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

A method for preparing cationic polyelectrolyte by settling and polymerizating in salt solution, comprising preparing cationic polyelectrolyte with settling and polymerizating process in the potasium carbonate solution. The polymeric material comprises methacryloyl methoxyethyl trimethyl ammonium chloride, dimethyl diallyl ammonii chloridum, copolymer non-ionic monomer is acrylamide, water, potasium carbonate and redox initiator, the mass propotion of the positive ion monomer in the total monomer is 0.01-100%, the adding amount of the potasium carbonate is 20-53% (mass concentration). The chemically-initiation comprises: the homopolymerization of the methacryloyl methoxyethyl trimethyl ammonium chloride and dimethyl diallyl ammonii chloridum, and the copolymerization of the two said monomers or one of the two with acrylamide; the physically-initiation comprises: the homopolymerization of the methacryloyl methoxyethyl trimethyl ammonium chloride and the copolymerization with acrylamide. The granular polymer can be prepared directly in this salt solution system, the invention is particularly characterized by the low energy consuming for drying and low salt content in the polymer, and the invention can be used to prepare pure positive ion polyelectrolyte.

Description

technical field [0001] The technical solution of the present invention relates to a cationic polyelectrolyte copolymer or homopolymer, especially a precipitation polymerization method prepared by a cationic polyelectrolyte. Background technique [0002] Cationic polyelectrolyte is one of the petrochemical products whose demand is growing rapidly. Because of its high positive charge density, good water solubility, high efficiency and non-toxicity, stable cationic unit structure, and wide pH range, it is widely used in petroleum exploration, papermaking, mining, textile printing and dyeing, daily chemical industry and water treatment. , has become one of the hotspots in domestic applied basic research. As a traditional method for the production of cationic polyelectrolytes, whether it is homogeneous polymerization in aqueous solution or heterogeneous polymerization such as suspension, emulsion or microemulsion, there are also organic solvents such as acetone, acetonitrile, is...

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): C08F220/56C08F2/04
Inventor 黎钢何彦刚杨超杨芳禹雪晴张广清任凤霞崔迎军
Owner HEBEI UNIV OF TECH