Synthetic method of ultraviolet initiated hydrophobic modified cationic polyacrylamide

A technology of polyacrylamide and hydrophobic modification, which is applied in the field of synthesis of hydrophobically modified cationic polyacrylamide induced by ultraviolet light, can solve the problems of long reaction time and toxic substances, and achieve shortened polymerization initiation time, convenient selection and low price Effect

Active Publication Date: 2015-01-07
SHENGLI OIL FIELD FANGYUAN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention solves the problems of long reaction time and the need to use toxic substances in the synthesis process of cationic polyacrylamide, and provides a hydrophobically modified cationic polyacrylamide with fast triggering speed, safe use and low production cost. Synthetic method of polyacrylamide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: A method for synthesizing hydrophobically modified cationic polyacrylamide triggered by ultraviolet light, characterized in that it comprises the following steps:

[0026] In the first step, 91.8ml of deionized water, 0.5g of acryloyloxyethyltrimethylammonium chloride monomer (DAC), 0.2g of butyl acrylate monomer (BA) and acrylamide monomer were sequentially added to the reaction device (AM) 9.5 g was stirred until completely dissolved to form a monomer aqueous solution, in which deionized water was used as a solvent, including acryloyloxyethyltrimethylammonium chloride monomer (DAC), butyl acrylate monomer (BA) and propylene Amide monomer (AM) is the total monomer, including acryloyloxyethyltrimethylammonium chloride monomer (DAC) and acrylamide monomer (AM) as the total water-soluble monomer; total monomer in monomer aqueous solution The mass fraction is 10%, the mass percentage of acryloyloxyethyltrimethylammonium chloride monomer and acrylamide monomer i...

Embodiment 2

[0031] Example 2: A method for synthesizing hydrophobically modified cationic polyacrylamide triggered by ultraviolet light, characterized in that it comprises the following steps:

[0032] In the first step, 24.5ml of deionized water, 3g of acryloyloxyethyltrimethylammonium chloride monomer (DAC), 0.5g of butyl acrylate monomer (BA) and acrylamide monomer ( AM) 7 g was stirred until completely dissolved to form a monomer aqueous solution, in which deionized water was used as a solvent, including acryloyloxyethyltrimethylammonium chloride monomer (DAC), butyl acrylate monomer (BA) and acrylamide Monomer (AM) is the total monomer, including acryloyloxyethyltrimethylammonium chloride monomer (DAC) and acrylamide monomer (AM) as the total water-soluble monomer; the total monomer mass in monomer aqueous solution The fraction is 30%, the mass percentage of acryloyloxyethyltrimethylammonium chloride monomer and acrylamide monomer is 30%:70%, and butyl acrylate monomer accounts for...

Embodiment 3

[0037] Example 3: A method for synthesizing hydrophobically modified cationic polyacrylamide triggered by ultraviolet light, characterized in that it comprises the following steps:

[0038] In the first step, add 11.0ml of deionized water, 9.0 g of acryloyloxyethyltrimethylammonium chloride monomer (DAC), 1.0 g of butyl acrylate monomer (BA) and acrylamide monomer to the reaction device in sequence (AM) 1.0 g was stirred until completely dissolved to form a monomer aqueous solution, in which deionized water was used as a solvent, including acryloyloxyethyltrimethylammonium chloride monomer (DAC), butyl acrylate monomer (BA) and propylene Amide monomer (AM) is the total monomer, including acryloyloxyethyltrimethylammonium chloride monomer (DAC) and acrylamide monomer (AM) as the total water-soluble monomer; total monomer in monomer aqueous solution The mass fraction is 50%, the mass percentage of acryloyloxyethyltrimethylammonium chloride monomer and acrylamide monomer is 90%...

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Abstract

The invention provides a synthetic method of ultraviolet initiated hydrophobic modified cationic polyacrylamide, which comprises the steps of sequentially adding deionized water, a cationic monomer, a hydrophobic monomer and an acrylamide monomer in a reaction device, uniformly stirring till the deionized water, the cationic monomer, the hydrophobic monomer and the acrylamide monomer are completely dissolved to form a monomer aqueous solution, adding an appropriate cosolvent and an initiating agent in the monomer aqueous solution, uniformly stirring, adjusting a pH (potential of hydrogen) value, filling high-purity nitrogen in the reaction device to exhaust air from the reaction device, placing the reaction device in an ultraviolet reaction device to initiate a polymerization reaction after the reaction device is sealed, generating hydrophobic modified cationic polyacrylamide colloid, purifying, washing and refining the colloid, drying in a vacuum drying oven, grinding, and obtaining ultraviolet initiated hydrophobic modified cationic polyacrylamide. According to the method, the initiated polymerization time is short; heating or cooling control is not required; in this case, the production technology is simplified; the energy consumption is reduced; and the production cost is lowered.

Description

technical field [0001] The invention relates to a method for synthesizing a water-soluble polymer, in particular to a method for synthesizing hydrophobically modified cationic polyacrylamide induced by ultraviolet light. Background technique [0002] At present, the flocculants used for wastewater and sludge dewatering are mainly organic polymer flocculants. Compared with inorganic flocculants, organic polymer flocculants have the advantages of less dosage, less influence on sewage pH, faster flocculation speed, and less influence by coexisting salts. class advantages. Polyacrylamide is a synthetic water-soluble polymer compound that is widely used and has the largest global consumption. According to the functional groups of PAM side chains, PAM can be divided into anionic polyacrylamide, cationic polyacrylamide and non-ionic polyacrylamide. Among them, cationic polyacrylamide is a high-efficiency flocculant, and hydrophobically modified cationic polyacrylamide introduces a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/34C08F220/18C08F2/48C08F4/04
Inventor 郑怀礼孙永军张育新熊祖平陈伟关庆庆杨青青
Owner SHENGLI OIL FIELD FANGYUAN CHEM IND
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