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Preparation for water soluble polyacrylamide, its derivative super-fine powder material

A technology of polyacrylamide and ultra-fine powder is applied in the field of preparation of water-soluble polyacrylamide and its derivative ultra-fine powder materials, which can solve the problems of limited application scope, easy generation of pollution, and increase of manufacturing cost, etc. The reaction is easy to carry out, the conversion rate is high, and the effect of reducing the production cost

Inactive Publication Date: 2006-11-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inverse latex type product greatly increases its manufacturing cost because its continuous phase uses oil or organic solvent, and it is easy to generate pollution when used, thus limiting its application range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1: prepare water-soluble polymer superfine powder material type I product

[0007] In a 50L stainless steel reaction kettle with a stirrer, a temperature controller, and a reflux condenser, first add 21.kg of pure water, and then add 1.6kg of Na 2 SO 4 , 1.6kg (NH 4 ) 2 SO 4 and 0.8kg(NH 4 ) 2 HPO 4 After dissolving evenly, add 7.1kg of acrylamide, 1.0kg of 79% acryloyloxyethyltrimethylammonium chloride, 2.04kg of 79% (meth)acryloyloxyethyldimethyl After benzyl ammonium chloride was stirred until it was completely dissolved, 0.4 kg of a polymer with a solid content of 8% diallyldiethyl ammonium chloride was added, and after uniform stirring, nitrogen gas was passed to remove oxygen for 30 minutes. , raise the temperature in the reactor to 22°C, then weigh four reagents, 0.38g of ammonium persulfate, 47.5g of urea, 0.38g of potassium bromate, and 0.76g of sodium sulfite, and add 50ml of water to dissolve them in 2 to 4 hours. Divide the initiator and t...

Embodiment 2

[0008] Embodiment 2: Preparation of water-soluble polymer ultrafine powder material type II product

[0009] In a 50L stainless steel reaction kettle with a stirrer, temperature controller, and reflux condenser, first add 20.5kg of pure water, then add 1.92kg of Na 2 SO 4 , 1.92kg (NH 4 ) 2 SO 4 and 0.96kg (NH 4 ) 2 HPO 4 After dissolving evenly, add 7.9kg of acrylamide, 1.32kg of 79% acryloyloxyethyl trimethyl ammonium chloride, 2.68kg of 79% (meth)acryloyloxyethyl dimethyl Benzyl benzyl ammonium chloride, after stirring until it completely dissolves, add 0.4 kg of a polymer with a solid content of 8% diallyl diethyl ammonium chloride, after stirring evenly, nitrogen gas is used to remove oxygen for 30 minutes. Raise the temperature in the reaction kettle to 15°C, then weigh 0.19g of ammonium persulfate, 24g of urea, 0.19g of potassium bromate, and 0.45g of sodium sulfite, and add 50ml of water to form a solution. , the initiator and reducing agent were divided into t...

Embodiment 3

[0011] In a 50L stainless steel reaction kettle with a stirrer, a temperature controller, and a reflux condenser, first add 21.kg of pure water, and then add 1.6kg of Na 2 SO 4 , 1.6kg (NH 4 ) 2 SO 4 and 0.8kg(NH 4 ) 2 HPO 4 After dissolving evenly, add 7.9kg of acrylamide, 1.32kg of 79% acryloyloxyethyl trimethyl ammonium chloride, 2.68kg of 79% (meth)acryloyloxyethyl dimethyl Benzyl benzyl ammonium chloride, after stirring until it completely dissolves, add 0.4 kg of a polymer with a solid content of 8% diallyl diethyl ammonium chloride, after stirring evenly, nitrogen gas is used to remove oxygen for 30 minutes. Raise the temperature in the reactor to 15°C, then weigh 0.19g of ammonium persulfate, 24g of urea, 0.19g of potassium bromate, and 0.45g of sodium sulfite, and add 50ml of water to form a solution. , Divide the initiator and the reducing agent into three equal parts and add them to the reaction kettle in turn. At the same time, add 0.11kg of acetic acid to a...

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Abstract

The invention discloses a preparation method of water-soluble polyacrylamide and its derivative ultrafine powder material, which belongs to the preparation technology of water-soluble polymer materials. The method includes the following process: in Na 2 SO 4 , (NH 4 ) 2 SO 4 and (NH 4 ) 2 HPO 4 In the salt solution, add acrylamide, (meth)acryloyloxyethyltrimethylammonium chloride, (meth)acryloyloxyethyldimethylbenzylammonium chloride mixed monomer, and then add diene Propyl diethyl ammonium chloride colloidal stabilizer, then add ammonium persulfate, urea, potassium bromate, sodium sulfite redox initiation system, adjust the pH value of the reaction solution with acetic acid, stir and heat up to 15-20°C under the protection of nitrogen to initiate Polymerization, after reacting for 4-8 hours to reach the temperature peak, then heat-preserve and react at 40-55°C for 3-8 hours to make a water-in-water polymer emulsion, and then spray dry to obtain the product. The invention has the advantages of easy reaction, high conversion rate, simple production process and low production cost. The product has good dispersibility and fast dissolution.

Description

technical field [0001] The invention relates to a preparation method of water-soluble polyacrylamide and its derivative ultrafine powder material, which belongs to the preparation technology of water-soluble polymer materials. Background technique [0002] The polymer of acrylamide and its derivatives is a kind of water-soluble functional polymer product. Because of its high molecular weight, easy formation of hydrogen bonds, and ability to perform various chemical reactions, it has been applied in many fields and has developed extremely rapidly. . There are many types of products, and their dosage forms vary greatly. The earliest production is 8-10% aqueous solution, and the development in the 1970s is mainly dry powder. In the early 1980s, water-in-oil (W / O) inverse latex products appeared again. Because of the low polymer content of hydrosol products, it is inconvenient to use and store; powder products are insoluble and require huge dissolving equipment; and inverse la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F20/56C08J3/16
Inventor 孙希明呼士峰李成吉
Owner TIANJIN UNIV