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Novel anionic thermal tackifying water-soluble polymer

A water-soluble polymer, anionic technology, used in drilling compositions, coatings, cosmetic preparations, etc., can solve the problems of high required concentration, difficult industrialization, low reaction concentration, etc. Adjustable, wide range of viscosity increase, the effect of a wide range of applications

Inactive Publication Date: 2011-05-25
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although N-isopropylacrylamide (NIPAM) based thermal tackifying graft copolymers have obvious tackifying properties, the response temperature is too low, the cost is too high, and the price of NIPAM monomer is extremely high; based on PEO (PPO) Thermal tackifying polymers generally require the addition of higher concentrations of inorganic salts (8% to 15% K 2 CO 3 ) to adjust the thermal viscosity increase temperature, and the synthesis method is mainly graft modification, the reaction concentration is low when the polymer solution is modified, and the required concentration is high when the graft polymer is thermally increased, so it is difficult to realize industrialization. limited to laboratory basic research

Method used

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  • Novel anionic thermal tackifying water-soluble polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The relative content that contains thermosensitive macromolecular monomer MPAD-II (A), acrylamide monomer (B) and acrylic acid (C) is respectively 20wt%, 70wt% and 10%, and monomer total amount is 10wt% In the aqueous solution, stir until each monomer is dissolved, adjust the pH of the solution to 4-9, and control the temperature of the solution at 40°C. Continue to stir, and after passing high-purity nitrogen for 1 hour, add a composite initiator of methyl persulfate and sodium bisulfite equivalent to 0.03wt% of the total amount of monomers, stop stirring at the same time, continue to keep the constant temperature at 40°C, and place it for 24 hours to obtain transparent elastic water coagulation Glue heat tackifying polymer (PADAA-10).

Embodiment 2

[0027] The relative content that contains temperature-sensitive macromolecular monomer MPAD-II (A), acrylamide monomer (B) and acrylic acid (C) is respectively 20wt%, 55wt% and 25%, and monomer total amount is 10wt% In the aqueous solution, stir until each monomer is dissolved, adjust the pH of the solution to 4-9, and control the temperature of the solution at 40°C. Continue to stir, and after passing high-purity nitrogen for 1 hour, add a composite initiator of methyl persulfate and sodium bisulfite equivalent to 0.03wt% of the total amount of monomers, stop stirring at the same time, continue to keep the constant temperature at 40°C, and place it for 24 hours to obtain transparent elastic water coagulation Glue heat tackifying polymer (PADAA-25).

Embodiment 3

[0029] The relative content that contains thermosensitive macromolecular monomer MPAD-II (A), acrylamide monomer (B) and acrylic acid (C) is respectively 20wt%, 45wt% and 35%, and monomer total amount is 10wt% In the aqueous solution, stir until each monomer is dissolved, adjust the pH of the solution to 4-9, and control the temperature of the solution at 40°C. Continue to stir, and after passing high-purity nitrogen for 1 hour, add a composite initiator of methyl persulfate and sodium bisulfite equivalent to 0.03wt% of the total amount of monomers, stop stirring at the same time, continue to keep the constant temperature at 40°C, and place it for 24 hours to obtain transparent elastic water coagulation Glue heat tackifying polymer (PADAA-35).

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Abstract

The invention relates to novel anionic thermal tackifying water-soluble polymer. According to requirements of actual application, a thermal tackifying temperature range is adjusted and controlled by varying a molecular structure. In the invention, a macromonomer radical copolymerization method is adopted; and the method can be used for preparing thermal tackifying polymer with higher solid content and high molecular weight and is easy for industrial production. The novel anionic thermal tackifying water-soluble polymer has the advantages of high water solubility, high thermal tackifying performance, wide tackifying temperature range, adjustable tackifying temperature, relatively low cost and the like, so the polymer has potential application value in water treatment, medicament release control, fluid resistance reduction, personal care products, papermaking, paints, food tackifiers, lubricants, dispersing agents and the like, particularly in the aspects of improvement on oil-gas recovery ratio, oil-gas drilling, production increase and the like.

Description

technical field [0001] The invention relates to an anionic thermal viscosity-increasing polymer and its preparation, and belongs to the fields of intelligent water-soluble polymers and enhanced oil recovery. Background technique [0002] At present, many large oil fields in my country have entered the middle and late stages of exploitation, and the water content of the produced fluid is increasing day by day, and the water content of the produced fluid of many oil wells is as high as 90%. Therefore, chemical flooding by adding chemical agents to water injection has become an important technical measure in my country's petroleum industry, and polymer flooding is an effective technology in chemical flooding. Polymer flooding technology has achieved remarkable results in Daqing Oilfield, Shengli Oilfield, etc., but it is aimed at Type III reservoirs in Shengli Oilfield with more severe reservoir conditions (formation temperature 80-93℃, formation water salinity greater than 300...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08F2/10C08F220/56C08F220/06C08F220/58A61K8/81C09K8/588C09D7/06C09D7/47
Inventor 冯玉军王毓
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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