Check patentability & draft patents in minutes with Patsnap Eureka AI!

High-molecular-weight active comb polymer and preparation method thereof

A comb-shaped polymer and high molecular weight technology, which is applied in the field of active comb-shaped polymers and its preparation, can solve the problems of poor connection stability between active groups and main chains, and achieve good water solubility, superior viscosity-increasing effect, and good technology effect of effect

Inactive Publication Date: 2010-11-17
CHINA PETROLEUM & CHEM CORP +1
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is the poor problem of the active group and main chain connection stability of the active polymer existing in the prior art, providing a new high molecular weight active comb polymer

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
  • High-molecular-weight active comb polymer and preparation method thereof
  • High-molecular-weight active comb polymer and preparation method thereof
  • High-molecular-weight active comb polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 72.5 grams of acrylamide, 13.8 grams of sodium acrylate, 31.2 grams of 2-acrylamido-2-methylpropanesulfonate, 7.5 grams of surface-active macromonomer-terminated allylbutyl polyoxyethylene (7) ether (EO =7) and 375 grams of water were added to a three-necked glass reactor, stirred, nitrogen deoxidation was carried out for 50 minutes, the temperature was controlled at 5°C, 25 mg of initiator potassium persulfate-sodium bisulfite was added to carry out aqueous radical polymerization, and then the temperature was raised to 30°C and react at constant temperature for 12 hours to obtain a gel product, which was cut, dried and pulverized to obtain a molecular weight of 13.3×10 6 , The surface tension is 57.2mN / m (aqueous solution with a concentration of 1500g / L) powder active comb polymer.

Embodiment 2

[0017] 88.3 grams of acrylamide, 31.8 grams of 2-acrylamido-2-methylpropanesulfonate sodium, 4.9 grams of surface active macromonomer allyl nonylphenol polyoxyethylene (12) ether (EO=12) and 375 Add one gram of water into a three-necked glass reactor, stir, pass nitrogen gas for 30 minutes to deoxidize, control the temperature at 10°C, add 125 mg of initiator ammonium persulfate-sodium bisulfite to carry out aqueous radical polymerization, then raise the temperature to 40°C and keep the temperature constant React for 8 hours to obtain a gel product. After cutting the gel, add 11 grams of sodium hydroxide to carry out hydrolysis at 80 ° C for 3 hours, then dry and pulverize to obtain a molecular weight of 14.5 × 10 6 , The surface tension is 55.9mN / m (aqueous solution with a concentration of 1500g / L) powder active comb polymer.

Embodiment 3

[0019] With 65.3 grams of acrylamide, 24.8 grams of sodium acrylate, 30.3 grams of 2-acrylamido-2-methylpropanesulfonate sodium, 4.6 grams of surface active macromonomer terminal allyl nonylphenol polyoxyethylene (12) ether ( EO=12) and 375 grams of water are added in the three-necked glass reaction kettle, stirred, nitrogen deoxygenation is carried out for 30 minutes, the temperature is controlled at 10°C, 62.5 mg of initiator potassium persulfate-sodium bisulfite is added to carry out aqueous radical polymerization, and then Raise the temperature to 60°C and react at a constant temperature for 6 hours to obtain a gel product, which is cut, dried and pulverized to obtain a molecular weight of 12.0×10 6 , The surface tension is 55.1mN / m (aqueous solution with a concentration of 1500g / L) powder active comb polymer.

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 a high-molecular-weight active comb polymer and a preparation method thereof, which mainly solve the problem of poor connection stability of the active groups of the active polymer and the main chain in prior art. By adopting the technical solution including the active comb polymer represented by structural formula (I) (in which x, y, p and q are mol numbers of structural units of acrylamide, sodium acrylate, 2-acrylamidyl-2-methyl sodium proparesulfonic acid and large monomer with surface activity; x:y:p:q is 60-80:10-30:5-20:0.1-5, R in the large monomer with surface activity is C1-C18 alkyl or C1-C18 alkyl aryl, n is 4-50, and the average molecular weight of the active comb polymer is greater than 106.) and preparation method thereof, the invention solves the problem greatly and can be used in high temperature oil reservoir exploitation with high hypersalinity.

Description

technical field [0001] The invention relates to a high molecular weight active comb polymer and a preparation method thereof. Background technique [0002] Active polymers usually refer to polymers with a molecular weight of more than several thousand and the functions of thickening and surface activity. Because it has the dual functions of expanding the swept volume and improving oil washing efficiency, it is used as a new type of oil displacement agent in tertiary oil recovery. It has received extensive attention and is expected to be applied to reservoirs with high temperature and high salinity. From the perspective of molecular structure, most active polymer oil displacement agents introduce surface active groups into the side chain of polyacrylamide through graft copolymerization, so that the polymer can reduce the oil-water interfacial tension while maintaining viscoelasticity. , to improve the oil displacement efficiency, and obtain a multi-effect function. [0003]...

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): C08F220/56C08F220/06C08F220/58
Inventor 周承俊杨为民夏燕敏周文乐虞子牛陈安猛宋晓芳
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com