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Acrylamide polymer, its preparation method and its application

An acrylamide, acrylamide-based technology, applied in the field of acrylamide polymer and its preparation, can solve the problems of difficult heat and mass transfer, low molecular weight of polymerized products, etc.

Active Publication Date: 2014-06-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the copolymerization of acrylamide and temperature-resistant and salt-resistant monomers also has the above-mentioned conventional problem of difficult heat and mass transfer, which further leads to lower molecular weight of the polymerized product.

Method used

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  • Acrylamide polymer, its preparation method and its application

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preparation example Construction

[0010] According to the method for preparing an acrylamide polymer of the present invention, the method comprises contacting an aqueous monomer solution containing acrylamide with an initiator under the protection of an inert gas under the conditions of aqueous solution polymerization, wherein the conditions of the aqueous solution polymerization include : The initial polymerization temperature is -10°C to 15°C, the polymerization time is 4-15 hours, and the temperature difference between the highest temperature and the lowest temperature during the polymerization process is 10-50°C.

[0011] The inventors of the present invention have found in research that the molecular weight of the polymer can be further increased by adopting the following conditions: that is, preferably, the conditions for the aqueous solution polymerization include: the initial polymerization temperature is 0°C to 10°C, and the polymerization time is 5- After 10 hours, the temperature difference between t...

Embodiment 1

[0050] This example is used to illustrate the acrylamide polymer of the present invention and its preparation method.

[0051] Add 869.56 kg of acrylamide (AM) and 130.43 kg of 2-acrylamido-2-methylpropanesulfonic acid (AMPS), 4000 kg of deionized water into the batching kettle, and control the temperature of the monomer aqueous solution with frozen brine under stirring at 0°C, sodium hydroxide was added to adjust the pH of the aqueous monomer solution to 7. Pump the monomer aqueous solution into 10m 3 In the jacketed polymerization kettle (CH-10 reactor produced by Beijing Chuanghua Company, the kettle body is made of stainless steel 304), the feed temperature of the aqueous monomer solution is controlled at 0°C, and high-purity nitrogen gas is used to remove oxygen for 1 Hours, add 10 grams of water-soluble azo initiator 2,2'-azo(2-amidinopropane) dihydrochloride, reducing agent N,N,N',N'-tetramethylethylenediamine 10 gram, 10 grams of sodium bisulfite and 10 grams of ammo...

Embodiment 2

[0057] The examples serve to illustrate the acrylamide polymers of the present invention and methods for their preparation.

[0058] Add 250 kg of AM, 750 kg of AMPS, and 2330 kg of deionized water into the batching kettle. While stirring, use frozen brine to control the temperature of the monomer aqueous solution to 10°C, and add sodium hydroxide to adjust the pH of the monomer aqueous solution to 5. Pump the monomer aqueous solution into 10m 3 In the polymerization kettle (CH-10 type reactor produced by Beijing Chuanghua Company, the kettle body is made of stainless steel 304), the feed temperature of the monomer aqueous solution is controlled at 10°C, and the high-purity nitrogen gas is used to remove oxygen for 1 hour, and the water-soluble distillate is added. 500 grams of nitrogen initiator 2,2'-azo(2-amidinopropane) dihydrochloride, 500 grams of reducing agent N,N,N',N'-tetramethylethylenediamine, add bisulfite 500 grams of sodium and 500 grams of ammonium persulfate, ...

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Abstract

The invention discloses an acrylamide polymer, its preparation method and its application, the method is characterized that under the condition of aqueous solution polymerization, under the protection of inert gas, an acrylamide-containing monomer aqueous solution and an initiator are contacted, wherein, the aqueous solution polymerization condition comprises: the polymerization initial temperature is -10-15 DEG C, the polymerization time is 4-15 hours, and the temperature difference of the highest temperature and the lowest temperature in a polymerization process is 10-50 DEG C. The product performance of the polyacrylamide polymer is greatly better than that of the current products.

Description

technical field [0001] The invention relates to an acrylamide polymer and its preparation method and application. Background technique [0002] The polymerization of acrylamide aqueous solution has the characteristics of fast polymerization rate, large reaction heat and poor thermal conductivity of the formed product gel. In industry, according to the different treatment methods of polymerization heat, the polyacrylamide polymerization process can be divided into a belt-type sheet-like polymerization process and a bulk kettle-type polymerization process. The belt-type sheet polymerization process is a process in which an aqueous solution of acrylamide is coated on a concave steel plate or a conveying steel belt (thickness can reach 20mm) for polymerization. Polymerization heat can be absorbed by the surrounding environment and the steel belt carrier. The American Cyanoamide Company adopts a belt-type sheet polymerization process to prepare polyacrylamide, with an annual pro...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/58C08F2/10C08F8/12C09K8/588
Inventor 伊卓黄凤兴刘希赵方园
Owner CHINA PETROLEUM & CHEM CORP
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