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Preparation for water soluble high-molecular weight cationic polymer

A cationic polymer, high molecular weight technology, applied in the field of water-soluble high molecular weight cationic polymer, can solve the problems of low purity, low molecular weight, small intrinsic viscosity, etc., and achieve the effect of simple polymerization process

Active Publication Date: 2005-02-23
HAISO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low activity of domestic METMAC and AETMAC monomers, especially the low purity, the obtained METMAC or AETMAC and acrylamide copolymers have small intrinsic viscosity, low molecular weight, low cationic degree, poor water solubility, and unsatisfactory flocculation effect.

Method used

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  • Preparation for water soluble high-molecular weight cationic polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 30g of acrylamide, 0.5g of 2-acryloyloxyethyltrimethylammonium chloride, and 70g of deionized water, add them into a three-neck flask, stir and mix evenly, and prepare a solution with a required monomer concentration of 30wt%; Add 0.004g of disodium diaminetetraacetic acid, 0.005g of sodium formate, 0.0025g of sodium perborate, and 0.002g of ammonium persulfate (APS) into a three-necked flask; place the three-necked flask in a constant temperature water bath at 30°C, and pass through nitrogen to remove oxygen for 15 Minutes later, add 0.004 g of sodium bisulfite, continue to pass nitrogen for 5 minutes, and pass nitrogen protection; after standing for 5 hours, take out the rubber block, granulate, dry, crush, and sieve to obtain 20-100 mesh, Intrinsic viscosity 23.4dl / g white powder cationic polymer product (intrinsic viscosity [η] is measured at 25±0.05°C in 1mol / L NaCl aqueous solution).

Embodiment 2

[0019] Weigh 17.41g of acrylamide and 25.46g of 2-acryloyloxyethyltrimethylammonium chloride, add deionized water to prepare a total liquid volume of 100g, add them into a three-necked flask, stir and mix evenly, and prepare the required monomer concentration of 38wt% solution; EDTA disodium 0.001g, sodium formate 0.003g, sodium perborate 0.003g, potassium persulfate (KPS) 0.0025g, add in the three-necked flask; place the three-necked flask in a constant temperature water bath at 30°C In the process, after passing nitrogen for 15 minutes to remove oxygen, add 0.005 g of sodium methyl sulfoxylate, continue passing nitrogen for 5 minutes, and pass nitrogen bag for protection; after standing for 20 hours, take out the rubber block, granulate and dry , crushing, and sieving to obtain a white powdery cationic polymer product of 20 to 100 meshes and an intrinsic viscosity of 18.2dl / g.

Embodiment 3

[0021] Weigh 75g of 2-acryloyloxyethyltrimethylammonium chloride, 0.7g of acrylamide, and 25g of deionized water, add them into a three-necked flask, stir and mix evenly, and prepare a solution with a required monomer concentration of 60wt%. Add 0.002g of disodium diamine tetraacetate, 0.002g of sodium formate, 0.0015g of sodium perborate, and 0.0015g of ammonium persulfate (APS) into a three-necked flask; place the three-necked flask in a constant temperature water bath at 30°C, and pass through nitrogen to remove oxygen for 15 Minutes later, add 0.003 g of sodium thiosulfate, continue to pass nitrogen for 5 minutes, and pass nitrogen protection; after standing for 24 hours, take out the rubber block, granulate, dry, crush, and sieve to obtain 20-100 mesh, Intrinsic viscosity 15.2dl / g white powder cationic polymer product.

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Abstract

A water-soluble, high molecular weight cationic polymer is prepared with polyphyletic composite oxidation-reduction triggering system by: adding multiple aid reagent, triggering methylpropyleneacyloxyethyltrimethyl ammonium chloride, or propyleneamide- propyleneacyloxyethyltrimethyl ammonium chloride, together with propyleneamide water solution to copolymer. The obtained products are water-soluble cationic polymer powder state, viscidity number 13.4-23.4dl / g, METMACS or AETMAC in polymer mol percent content is 0.5% -99.5%, residual monomers content is is less than or equal to 0.1 wt%. This invention has the features of that it adopts domestic industrial grade monomers as raw materials directly, without refine, the obtained products' cationic value is 50-99.5. The products can be used as clay stabilizer, reverse emulsion breaker, slow corrosion agent in petroleum engineering, intensifier, treating agent for wastewater in paper-making industry, water-treating agent and silt dewatering agent in environment protection etc.

Description

technical field [0001] The invention relates to a method for preparing a water-soluble high-molecular-weight cationic polymer through the copolymerization of methacryloyloxyethyltrimethylammonium chloride or acryloyloxyethyltrimethylammonium chloride and acrylamide. Background technique [0002] The compound with structural formula (1) can be used for the monomer of synthesizing water-soluble cationic polymer [0003] [0004] In the formula: M represents the cationic center atom, which can be nitrogen, phosphorus and sulfur atoms (when it is a sulfur atom, only three hydrocarbon groups are used); R 1 , R 2 , R 3 , and R 4 Represents a hydrocarbon group (or a hydrogen atom), at least one of which is an unsaturated olefin group or a reactive epoxy hydrocarbon group. In most cases, at least two of the 4 hydrocarbon groups are the same. The olefin group can be long or short, and the carbon The number varies from 2 to 40, preferably in the range of 2 to 12, and the carbon...

Claims

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Application Information

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IPC IPC(8): C08F4/40C08F220/56
Inventor 蒋拥华李绵贵
Owner HAISO TECH
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