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Long-chain alkyl quaternary ammonium salt monomer, preparing method thereof and association polymer

A technology of quaternary ammonium salt monomer and long-chain alkyl, which is applied in its preparation method and associative polymer, and the field of long-chain alkyl quaternary ammonium salt monomer, which can solve the problems of limited oil reservoirs, poor viscosity-increasing performance, and salt resistance. gender issues

Active Publication Date: 2016-06-01
吉林光亚聚合物化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the continuous development of oilfields, the conditions of oil reservoirs are deteriorating, and oilfield exploitation is gradually entering the second and third types of high-temperature and high-salt oil reservoir blocks, which puts forward higher requirements for the temperature and salt resistance of polymers. Requirements, the oil displacement polymer obtained by the polymerization of the existing polymerizable surfactant has the disadvantages of poor high temperature resistance and salt resistance, poor viscosity increasing performance in high temperature and high salt environment, it is difficult to meet the application of this type of reservoir, thus Limit the development of this type of reservoir

Method used

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  • Long-chain alkyl quaternary ammonium salt monomer, preparing method thereof and association polymer
  • Long-chain alkyl quaternary ammonium salt monomer, preparing method thereof and association polymer
  • Long-chain alkyl quaternary ammonium salt monomer, preparing method thereof and association polymer

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preparation example Construction

[0040] The present invention also provides a kind of preparation method of long chain alkyl quaternary ammonium salt monomer, comprises the following steps:

[0041] A) reacting acryloyl chloride and the compound shown in formula 2 to obtain the compound shown in formula 3;

[0042]

[0043] B) reacting the compound shown in formula 3 obtained in the step A) with the halogenated hydrocarbon RX to obtain the long-chain alkyl quaternary ammonium salt monomer shown in formula 1;

[0044]

[0045] In formula 1, R 1 is an arylene group, R is a C8-C20 alkyl group, and X is a halogen.

[0046]

[0047] In the present invention, the reaction of step A) is preferably carried out according to the reaction equation shown in formula 7. In the present invention, the compound shown in formula 3 is obtained by mixing acryloyl chloride and the compound shown in formula 2 in a solvent for reaction. In the present invention, preferably, the compound shown in formula 2 and acryloyl ch...

Embodiment 1

[0071] The synthesis of embodiment 1.(4-acrylamido) phenyl dodecyl dimethyl ammonium bromide

[0072] Step 1: In a four-neck flask equipped with a stirrer, a thermometer, a reflux condenser, a constant pressure dropping funnel, and a nitrogen protection device, follow n(N,N-dimethyl-p-phenylenediamine): n(dimethyl Formamide (DMF)=1:2, add 102.5g N,N-dimethyl-p-phenylenediamine and 110.09gDMF, then add 15.0g sodium carbonate powder (as an acid-binding agent, react with HCl, one of the products, to promote the positive reaction ), under stirring conditions, the temperature of the system is controlled by an ice-water bath at -5~5°C, according to n(N,N-dimethyl-p-phenylenediamine):n(acryloyl chloride)=1:1.2, using constant pressure drop Slowly add the acryloyl chloride solution consisting of 81.77g of acryloyl chloride and 66.05g of DMF solvent into the liquid funnel, the molar ratio of the two is 1:1. After the addition is completed, continue to react for 4-8 hours, and after fil...

Embodiment 2

[0078] Embodiment 2. (4-acrylamido) the synthesis of phenyl dodecyl dimethyl ammonium chloride

[0079] Step 1 is the same as Example 1

[0080] Step 2: In a four-necked flask equipped with a stirrer, a thermometer, a reflux condenser, a constant pressure dropping funnel, and a nitrogen protection device, follow n (intermediate product): n (ethyl acetate): n (chlorododecane )=1:2.5:1.2, add 109.54g intermediate product, 126.86g ethyl acetate, 154.12g chlorododecane successively, pass into N2 protection, under stirring condition, temperature rises to 65 ℃, constant temperature reaction 36h, pass The solvent ethyl acetate was removed by a rotary evaporator to obtain a slightly yellow viscous liquid, which was stored in a refrigerator to form a light yellow solid, which was washed 2 to 3 times with ether, and the product was dried in a vacuum oven at 60°C for 8 hours to obtain 189.02g of (4-acrylamido) phenyl dodecyl dimethyl ammonium chloride, as shown in formula 1-2, yield 83....

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Abstract

The invention provides a long-chain alkyl quaternary ammonium salt monomer, having a structure as shown in formula 1, in formula 1, R1 is arylidene, R is a C8-C20 alkyl group, and X is halogen. The alkyl quaternary ammonium salt monomer can polymerize double bonds of an acrylamide group, is relatively higher in activity, has higher conversion rate in a copolymerization process and is more favorable for constructing a supermolecule solution structure; besides the conventional long-chain alkyl, a benzene ring structure is introduced into the molecular structure, such structure has larger steric hindrance and rigidity, and is favorable for inhibiting intramolecular association, a main chain molecular structure is more stretched, and has higher tackifying performance, and a polymer solution has relatively excellent temperature resistance and antisalt performances. The invention further provides a preparing method of the long-chain alkyl quaternary ammonium salt monomer and an association polymer. The formula I is showed in the description.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemical additives, and in particular relates to a long-chain alkyl quaternary ammonium salt monomer, a preparation method thereof and an associative polymer. Background technique [0002] The oil extraction process can be divided into primary oil recovery, secondary oil recovery and tertiary oil recovery. Both the primary and secondary oil recovery are recovered by physical methods, and the recovery rate can reach 30% to 40%, but most of the crude oil remains in the stratum after primary and secondary oil recovery. The major oil fields in our country have entered the post-stage of secondary oil recovery one after another. In order to improve the recovery factor of the existing oil fields, the tertiary oil recovery technology has been widely used. [0003] The more effective way in tertiary oil recovery is to enhance oil recovery by polymer flooding, poly-surface binary flooding or poly-surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/44C07C231/12C08F220/56C08F220/58C08F220/60C08F8/12C09K8/588
CPCC07C231/02C07C231/12C07C233/44C08F8/12C08F220/585C09K8/588C08F220/56C08F220/58C08F220/60
Inventor 郭拥军李华兵毛慧斐蔡术威冯春辉
Owner 吉林光亚聚合物化工有限公司
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