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Hydrophobic associating water-soluble copolymer and method for preparation

A technology of water-soluble copolymer and hydrophobic association, which is applied in the field of hydrophobically associated water-soluble copolymer and its preparation, can solve the problem of losing hydrophobic properties and achieve the effect of outstanding temperature resistance of the solution

Inactive Publication Date: 2006-06-28
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the hydrophobic properties are lost, resulting in the hydrophobic association of water-soluble polymers that cannot be used under high temperature and high acid and alkali conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] 1. Dissolve 20 g of acrylonitrile and 0.1 g of p-n-butylstyrene in 100 ml of acetonitrile, add them to a reaction kettle equipped with a stirrer, a thermometer, a reflux condenser and a nitrogen gas inlet, pass nitrogen gas for 30 minutes, and add 0.1 1 g of benzoyl peroxide was reacted at a temperature of 50° C. for 8 hours, 100 milliliters of dimethylformamide and 2 grams of sodium hydroxide were added to the product, and the temperature was raised to 100 (° C., stirred and reacted for 4 hours, neutralized with hydrochloric acid, washed with water, and Dry overnight at a constant temperature of 50°C to obtain a powder product.

[0030] 2. Add 20 grams of vinyl acetate, 1 gram of butadiene, and 150 milliliters of ethyl acetate into the same reaction kettle as in Example 1, pass nitrogen gas for 30 minutes, add 0.25 grams of azobisisobutyronitrile, and react at a temperature of 65°C After 10 hours, 0.2 g of potassium hydroxide was added, reacted at 40°C for 20 minutes, ...

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PUM

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Abstract

The invention discloses a hydrophobic associated water-soluble copolymer and its preparation method. The preparation method is characterized in charging 0.1-4 parts by weight of hydrophobic monomer, 6-9.9 parts by weight of hydrolysable oil-soluble monomer, 0.5-3.5 parts by weight of initiator and 0-10 parts by weight of polymerization solvent into a reaction still with a stirrer, a thermometer, a reflux condenser and a nitrogen intake, then reacting for 4-10 hours under the temperature of 50-100 DEG C to obtain the copolymer. Then charging 0.1-5 parts by weight of alkali, 0-10 parts by weight of solvent for dissolving the polymer into said reactant, hydrolyzing for 0.1-48 hours under the temperature of 30-50 DEG C, drying, pulverizing to obtain the hydrophobic associated water-soluble copolymer. The product can be used as water injection tackifier, acid liquor thickener, water shutoff agent, flocculant for water treatment, corrosion and scale inhibitor and pigment dispersant for printing and dyeing.

Description

1. Technical field [0001] The invention relates to a hydrophobic association water-soluble copolymer and a preparation method thereof, belonging to the field of synthesis of polymer materials. 2. Background technology [0002] Hydrophobically associated water-soluble polymers (including water-soluble hydrophobically modified polymers) refer to water-soluble polymers with a small amount of hydrophobic groups (2% to 5% mole fraction) on the hydrophilic macromolecular chain of the polymer or copolymers. Due to its unique amphiphilic structure, its solution characteristics are quite different from those of general water-soluble polymer solutions. In aqueous solution, the hydrophobic groups of such amphiphilic polyelectrolytes associate with each other, and the electrostatic repulsion and attraction of charged ionic groups compete and cooperate with each other, so that the macromolecular chains produce intramolecular or intermolecular associations to form various Micellar nanos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/44C08F218/08C08F220/14C08F4/04C08F4/34
Inventor 崔平黄荣华
Owner SICHUAN UNIV
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