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Ultra-high molecular weight polyacrylamide composite initiator and method for preparing ultra-high molecular weight polyacrylamide by using same

A polyacrylamide and ultra-high molecular weight technology, applied in the field of ultra-high molecular weight polyacrylamide, can solve the problems of low molecular weight of ultra-high molecular weight polyacrylamide, achieve scientific and reasonable formula design, simple and easy preparation method, improve molecular weight and The effect of solubility

Inactive Publication Date: 2020-04-28
淄博锐捷新技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in the prior art, the molecular weight of the prepared ultra-high molecular weight polyacrylamide is still low, and there is room for further improvement

Method used

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  • Ultra-high molecular weight polyacrylamide composite initiator and method for preparing ultra-high molecular weight polyacrylamide by using same
  • Ultra-high molecular weight polyacrylamide composite initiator and method for preparing ultra-high molecular weight polyacrylamide by using same
  • Ultra-high molecular weight polyacrylamide composite initiator and method for preparing ultra-high molecular weight polyacrylamide by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A composite initiator, made of the following raw materials in mass percentage: 20% of tetramethylethylenediamine, 10% of N,N dimethyl-p-toluidine, 20% of β-2-methylpropionitrile, three Ethylene glycol amine 5%, cetyl alcohol 3%, water 42%.

[0040] Utilize above compound initiator to prepare the method for ultrahigh molecular weight polyacrylamide, specifically comprise the following steps:

[0041] (1) Add acrylamide monomer to the polymerization kettle, then add water, then add 0.02% isopropanol, 5% urea, and 0.001% thiourea in sequence, measure according to the mass of acrylamide monomer, stir, and adjust the pH at 7.75 ;

[0042] (2) The reaction temperature of the system is controlled at 1 ± 0.5 ° C, and then nitrogen is introduced to control the nitrogen pressure to remain at 0.2 MPa; after 15 minutes, 0.2% of the composite initiator and 0.004% of sulfurous acid are added at intervals of 5 minutes. Sodium hydrogen and 0.005% potassium persulfate, measured by the...

Embodiment 2

[0046] A composite initiator, made of the following raw materials in mass percentage: 30% of tetramethylethylenediamine, 20% of N,N dimethyl-p-toluidine, 10% of β-2-methylpropionitrile, three Ethylene glycol amine 10%, cetyl alcohol 5%, water 25%.

[0047] Utilize above compound initiator to prepare the method for ultrahigh molecular weight polyacrylamide, specifically comprise the following steps:

[0048] (1) Add acrylamide monomer to the polymerization kettle, then add water, then add 0.03% isopropanol, 10% urea, and 0.003% thiourea in sequence, measure according to the mass of acrylamide monomer, stir, and adjust the pH at 7.95 ;

[0049] (2) The reaction temperature of the system is controlled at 1 ± 0.5°C, and then nitrogen is introduced to control the nitrogen pressure to remain at 0.3MPa; after 15 minutes, 0.4% of the composite initiator and 0.005% of sulfurous acid are added at intervals of 5 minutes respectively Sodium hydrogen and 0.007% potassium persulfate, meas...

Embodiment 3

[0053] A composite initiator, made of the following raw materials in mass percentage: 10% of tetramethylethylenediamine, 5% of N,N dimethyl-p-toluidine, 20% of β-2-methylpropionitrile, three Ethylene glycol amine 10%, cetyl alcohol 5%, water 50%.

[0054] Utilize above compound initiator to prepare the method for ultrahigh molecular weight polyacrylamide, specifically comprise the following steps:

[0055] (1) Add acrylamide monomer to the polymerization kettle, then add water, then add 0.025% isopropanol, 8% urea, and 0.002% thiourea in sequence, measure according to the mass of acrylamide monomer, stir, and adjust the pH at 7.80 ;

[0056] (2) The reaction temperature of the system is controlled at 1 ± 0.5 ° C, and then nitrogen is introduced to control the nitrogen pressure to remain at 0.2 MPa; after 15 minutes, 0.3% of the composite initiator and 0.004% of sulfurous acid are added at intervals of 5 minutes. Sodium hydrogen and 0.006% potassium persulfate, measured by th...

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Abstract

The invention belongs to the technical field of ultra-high molecular weight polyacrylamide, and particularly relates to an ultra-high molecular weight polyacrylamide composite initiator and a method for preparing ultra-high molecular weight polyacrylamide by using the same. The ultrahigh molecular weight polyacrylamide composite initiator disclosed by the invention is prepared from the following raw materials: tetramethylethylenediamine, N, N-dimethyl p-toluidine, beta-2-methyl propionitrile, triethylene glycol amine and hexadecanol. The ultra-high molecular weight polyacrylamide composite initiator is scientific and reasonable in formula design, and the molecular weight of the ultra-high molecular weight polyacrylamide is effectively improved; the invention further provides a preparationmethod which is simple and easy to implement and capable of improving the molecular weight and solubility of the product.

Description

technical field [0001] The invention belongs to the technical field of ultra-high molecular weight polyacrylamide, and in particular relates to an ultra-high molecular weight polyacrylamide composite initiator and a method for preparing ultra-high molecular weight polyacrylamide by using the same. Background technique [0002] Polyacrylamide (English name POLYACRYLAMIDE, referred to as PAM) is a general term for homopolymers and copolymers of acrylamide and its derivatives. It is currently one of the most widely used and most promising water-soluble polymer compounds. Additives" and "universal products" are mainly used in the fields of oil extraction, water treatment and paper making. [0003] During the polymerization of acrylamide, the factors affecting the molecular weight and solubility mainly include: initiator, monomer quality and concentration, pH value of the polymerization system, and impurity content in the polymerization system. Among them, the initiator is the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/56C08F4/40C08F2/38
CPCC08F2/38C08F4/40C08F120/56
Inventor 冯玉军张军王岷全刘国梁孔庆水张建于兵
Owner 淄博锐捷新技术开发有限公司
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