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

Induction system for preparing especially large molecule amphoteric water treatment absorbent

A technology of initiation system and water treatment, applied in the direction of adsorption water/sewage treatment, etc., can solve the problems of low molecular weight, serious molecular weight degradation, high insoluble content, and achieve the effect of good solubility and small molecular weight degradation.

Inactive Publication Date: 2009-09-09
扬州科宇化工有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The additives and chain transfer agents added to the copolymerization are urea and nitrilopropionamide, the initiators added are potassium persulfate, ammonium persulfate, and azobisisobutyronitrile, the polymerization concentration is generally 40%, and the initiation temperature is 35°C , although the polymer gel has a high viscosity, its molecular weight is not high, so it cannot be granulated. It is dried with hot air in an oven dryer, and the product has poor solubility, high insoluble content, serious molecular weight degradation, and unstable quality.

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

[0027] Acrylamide aqueous solution 390g (concentration 26%), sodium acrylate 180g (concentration 36%), methacryloyloxyethyl trimethylammonium chloride 180g (concentration 78%), deionized water 270g, add in the polymerization kettle, Adjust the initial temperature to 16°C, and add 0.02% disodium edetate, 0.012% sodium formate, 0.012% nitrilamide, and 0.3% β-dimethylaminopropionitrile in the percentage of the total weight of comonomers (the same below). %, ethylenediamine 0.15%, after nitrogen deoxygenation for 30 minutes, add ammonium persulfate or potassium persulfate 0.01%, sodium bisulfite or sodium sulfite 0.02%, azoamidinopropane hydrochloride 0.05%, continue nitrogen 15 minutes, seal all feed openings. After the reaction is over, the colloid is pressed out with compressed air, and the material is granulated, dried, crushed, and sieved to obtain an ultra-high-molecular amphoteric water treatment adsorbent. Its product performance indicators: molecular weight 25.7 million, ...

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 relates to an induction system for preparing especially large molecule amphoteric water treatment absorbent, belonging to the technical field of chemical synthesis process, in particular to the technology for preparing especially large molecule amphoteric water treatment absorbent. The especially large molecule amphoteric water treatment absorbent comprises disodium ethylene diamine tetraacetate, sodium formate, DBNPA, beta- dimethylamino propionitrile, ethylenediamine, persulphate, sulphite and water soluble organic diazonium salt. The induction system reduces induction polymerization temperature, prevents interlinkage of polymer during polymerization and drying, and can obtain especially large molecule amphoteric water treatment absorbent with fast dissolution speed. Molecular weight degradation is small and the product solubility is good in pelleting and drying process.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis technology, in particular to the technology for preparing ultra-high macromolecular amphoteric water treatment adsorbents. Background technique [0002] It is reported in the literature that an amphoteric polymer adsorbent prepared by aqueous copolymerization of acrylate organic anion monomer, dihydrocarbyl amino (meth)acrylate quaternary ammonium salt organic cationic monomer, and acrylamide has a molecular weight of 500- 10 million, the dissolution rate is 1.5-2 hours. The additives and chain transfer agents added to the copolymerization are urea and nitrilopropionamide, the initiators added are potassium persulfate, ammonium persulfate, and azobisisobutyronitrile, the polymerization concentration is generally 40%, and the initiation temperature is 35°C , Although the polymer gel has a high viscosity, its molecular weight is not high, so it cannot be granulated. If it is dried with h...

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): C08F4/40C08F2/38C08F20/06C08F20/58C02F1/28
Inventor 崔春贞
Owner 扬州科宇化工有限公司
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