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

Water-solubility organic copolymerization amphoteric macromolecular flocculant and preparation method

An amphoteric polymer, water-soluble technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of not conforming to green chemistry, low storage stability, etc. Effect

Inactive Publication Date: 2012-09-26
SICHUAN NORMAL UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]2. The Mannich reaction requires the use of a large amount of organic solvents, which does not conform to the principles of green chemistry;
[0008] 3. Polyacrylamide amphoteric polymer flocculant modified by Mannich reaction is not suitable for treating wastewater with high pH, ​​and its storage stability is not high

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
  • Water-solubility organic copolymerization amphoteric macromolecular flocculant and preparation method
  • Water-solubility organic copolymerization amphoteric macromolecular flocculant and preparation method
  • Water-solubility organic copolymerization amphoteric macromolecular flocculant and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Step 1. Add 2g of itaconic acid (salt), 0.006g of polymerization assistant sodium edetate and 15g of distilled water into a 250mL four-necked reaction flask equipped with a thermometer, nitrogen device and stirrer, stir to dissolve, and then vacuumize Twice, 5 minutes each time, nitrogen once in the middle, 5 minutes;

[0052] Step 2. Add 3g of N,N-dimethylaminoethyl acrylate to 16g of acryloyloxyethyltrimethylammonium halide, dilute with 4g of distilled water and mix evenly, put it into the dropping funnel (a), dilute 1g with 12g of distilled water The bifunctional monomer diacrylate is loaded into the dropping funnel (b);

[0053] Step 3, under the condition of continuous stirring and nitrogen, add the mixture of 0.17g redox initiator potassium persulfate and potassium bisulfite at one time, the ratio of the amount of oxidizing agent to reducing agent is 1: 0.7, and the temperature is raised to 35 ℃, adjust the pH of the aqueous solution to 5, drop the mixture of acr...

Embodiment 2

[0056] Step 1. Add 4g of itaconic acid (salt), 0.045g of polymerization assistant sodium edetate and 30g of distilled water into a 250mL four-neck reaction flask equipped with a thermometer, nitrogen device and stirrer, stir to dissolve, and then vacuumize Twice, 5 minutes each time, nitrogen once in the middle, 5 minutes;

[0057] Step 2. Add 6.8g of N,N-dimethylaminoethyl acrylate to 30g of acryloyloxyethyltrimethylammonium halide, dilute with 8g of distilled water and mix evenly, put it into the dropping funnel (a), and dilute with 25g of distilled water 2g of bifunctional monomer diacrylate is loaded into the dropping funnel (b);

[0058] Step 3, under the condition of continuous stirring and nitrogen flow, add the mixture of 0.35g redox initiator potassium persulfate and potassium bisulfite at one time, the ratio of the amount of oxidizing agent to reducing agent is 1: 0.4, and the temperature is raised to 45 ℃, adjust the pH of the aqueous solution to 5, drop the mixtur...

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 water-solubility organic copolymerization amphoteric macromolecular flocculant and a preparation method. The amphoteric macromolecular flocculant is a polymer which is formed by copolymerizing three monomers including acryloyl oxygen ethyl trimethyl ammonium halide, acrylic-N, N-dimethylamino ethyl ester and itaconic acid (salt) and a bifunctional group monomer diacrylate ester. In the preparation process, a redox initiator, an inorganic peroxide initiator and a polymerization assistant are adopted at the same time, the conversion rate of the monomers is improved, and the residue monomers are reduced; the preparation and operation of the flocculant are simple, and the flocculant can be directly used; and the prepared flocculant has the advantages of small use amount, large diameter of the flocculant, quick sedimentation and the like.

Description

technical field [0001] The invention relates to a water-soluble organic copolymerized amphoteric polymer flocculant and a preparation method. Background technique [0002] Water is the basic material for human survival and social development. At present, the water environment in the world is facing the problems of water resource shortage, excessive consumption and serious pollution. The World Health Organization (WHO) survey shows that 80% of human diseases are related to unsafe water quality. China is a country with abundant water resources, but at the same time it is a country with severe water shortage, extremely low utilization rate of water resources and serious water pollution. These three factors seriously restrict people's normal life and sustainable economic development. Therefore, effective treatment and reuse of waste water (sewage) is an inevitable way to solve limited water resources to meet people's growing production and living needs. In the process of wast...

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): C02F1/56C08F220/34C08F222/02C08F222/10C08F4/40C08F4/30
Inventor 朱明张静丁瑶
Owner SICHUAN NORMAL UNIV