Hydrophobic associating water-soluble polymer of compound positive ions

A technology of water-soluble polymers and hydrophobic association, which is applied in the field of compound cationic hydrophobic association water-soluble polymers and its synthesis, can solve the problem of decreased viscosity increasing ability and achieve good compatibility effect

Inactive Publication Date: 2008-06-11
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

However, in salt water, the charge repulsion on the polydielectric molecular chains is shielded, and the viscosity-increasing ability is significantly reduced.

Method used

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  • Hydrophobic associating water-soluble polymer of compound positive ions
  • Hydrophobic associating water-soluble polymer of compound positive ions
  • Hydrophobic associating water-soluble polymer of compound positive ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the presence of acrylamide (monomer A), hexadecyldimethyl (2-methacryloyloxyethyl) ammonium bromide (monomer B) and trimethyl (2-methacryloyloxyethyl) ) The relative content of ammonium chloride (monomer C) is 89mol%, 1mol% and 10mol% respectively, and the monomer total amount is in the aqueous solution of 6wt%, feeds the dissolved oxygen in high-purity nitrogen removal water, at 20 ℃ Stir to completely dissolve the monomers, add 0.04% (molar ratio) V50 equivalent to the total amount of monomers after 1 hour as an initiator, stop stirring at the same time, continue to keep the constant temperature at 20°C, and place for 24 hours to obtain a transparent elastic hydrogel product.

Embodiment 2

[0029] In the presence of acrylamide (monomer A), dodecyldimethyl(acryloyloxyethyl)ammonium bromide (monomer B) and trimethyl(2-methacryloyloxyethyl)ammonium chloride The relative content of (monomer C) is 86.5mol%, 1.5mol% and 15mol% respectively, and in the aqueous solution that monomer total amount is 15wt%, feeds high-purity nitrogen to remove the dissolved oxygen in water, stirs at 50 ℃ to make The monomer was completely dissolved, and after 1 hour, 0.3% (weight ratio) of potassium persulfate equivalent to the total amount of the monomer was added as an initiator, and at the same time, the stirring was stopped, and the temperature was kept at 50°C for 12 hours to obtain a transparent elastic hydrogel product.

Embodiment 3

[0031] In the presence of acrylamide (monomer A), octyldimethyl (2-methacryloyloxyethyl) ammonium bromide (monomer B) and trimethyl (2-methacryloyloxyethyl) The relative content of ammonium chloride (monomer C) is 75mol%, 5mol% and 20mol% respectively, and in the aqueous solution that monomer total amount is 20wt%, feeds high-purity nitrogen to remove the dissolved oxygen in water, stirs at 25 ℃ Completely dissolve the monomer, add 0.04% (molar ratio) V50 equivalent to the total amount of the monomer as an initiator after 1 hour, stop stirring at the same time, continue to keep the constant temperature at 25° C., and place it for 24 hours to obtain a transparent elastic hydrogel product.

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Abstract

A hydrophobic, associated and water-soluble composite cationic polymer for recovering petroleum, treating sewage and preparing water-soluble paint is prepared from a great cationic monomer with surface activity, a small cationic monomer and a non-ionic monomer through copolymerizing. Its advantages are high water solubility and high viscosity increasing function.

Description

technical field [0001] The invention relates to a composite cationic hydrophobically associated water-soluble polymer and a synthesis method thereof, belonging to the field of water-soluble polymers. Background technique [0002] In recent years, hydrophobically associating water-soluble polymers have attracted much attention due to their strong viscosity-increasing ability and unique solution properties. Hydrophobically associated water-soluble polymers refer to a new type of functional water-soluble polymers formed by introducing a very small amount of hydrophobic units (usually <2mol%) into the hydrophilic backbone of conventional water-soluble polymers. In aqueous solution, when the concentration of this type of polymer exceeds a certain level, the hydrophobic units on different molecular chains produce an association effect, and the polymer macromolecules form a three-dimensional network structure in the solution, and the viscosity of the solution increases significa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F2/10C08F4/40
Inventor 冯玉军陈权生操卫平夏雨孙玉海
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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