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Sulfonate surfactant and preparation method thereof

A technology of surfactants and sulfonates, applied in the preparation of sulfonates, chemical instruments and methods, drilling compositions, etc., can solve the problems of poor salt resistance and temperature resistance, and achieve high temperature and salt resistance. , high surface activity, improve the effect of oil displacement

Inactive Publication Date: 2012-09-26
佛山市灏奇化工发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a weak base and low base sulfonate surfactant, which can solve the problem of poor salt and temperature resistance of existing sulfonate surfactants

Method used

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  • Sulfonate surfactant and preparation method thereof
  • Sulfonate surfactant and preparation method thereof
  • Sulfonate surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, a kind of sulfonate surfactant, is a kind of anionic-nonionic surfactant, structural formula is:

[0022]

[0023] Among them, R 1 for H.

[0024] figure 1 Infrared spectrum of the sulfonate surfactant.

[0025] The preparation method of the sulfonate surfactant, the total number of carbon atoms in the acid used is 10-18, and the specific preparation steps are as follows:

[0026] Step 1: (1) First, dissolve 1 mol of diethanolamine in a certain amount of methanol, add dropwise 2 mol of methyl acrylate, stir at 35°C for 4 hours, and vacuum filter at 0.08MPa for 1 hour to obtain AB 2 monomer;

[0027] (2) Stir trimethylolpropane and 2% catalyst p-toluenesulfonic acid at 115°C, according to AB 2 The ratio of monomer to trimethylolpropane molar ratio is 2:1, add AB dropwise 2 The monomer was reacted at 100°C for 1 hour, and transferred to a rotary evaporator at 120°C for 1 hour to obtain a hydroxyl-terminated hyperbranched polymer.

[0028] Step 2: M...

Embodiment 2

[0032] Embodiment 2, a kind of sulfonate surfactant and preparation method thereof, referring to embodiment 1, differs from embodiment 1, in step 2, with step 1 gained terminal hydroxyl hyperbranched polymer and cinnamoyl chloride by 1: A molar ratio of 4 was mixed.

Embodiment 3

[0033] Embodiment 3, a kind of sulfonate surfactant and preparation method thereof, refer to embodiment 1, and embodiment 1 is different, step 2: the hydroxyl end hyperbranched polymer obtained in step 1 and oleic acid are 1:4 The molar ratio is mixed.

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Abstract

The invention relates to a sulfonate surfactant which is an anionic-nonionic surfactant. The structural formula is as shown in the specification, wherein R1 is H or aryl or long-chain alkyl. The preparation method of the sulfonate surfactant comprises the following steps: synthesizing an AB2 type monomer to synthesize a hydroxyl-terminated hyperbranched polymer; and then modifying the terminal part of the hydroxyl-terminated hyperbranched polymer and introducing sulfonic groups to synthesize the hyperbranched sulfonate surfactant. The sulfonate surfactant has good water solubility, emulsibility, wettability and foaming properties, and has high surfactivity and temperature and salt resistance properties. When the sulfonate surfactant is complexed with polyacrylamide and Na2CO3 to form a ternary composite oil-displacing agent, the oil-water interfacial tension can be reduced to 10<-3> mN / m, thereby greatly improving the oil-displacing effect.

Description

technical field [0001] The invention relates to a surfactant, in particular to a sulfonate surfactant; the invention also relates to a preparation method of the sulfonate surfactant. Background technique [0002] With the deepening of exploration and development of oilfields, most of them have entered the stage of high water-cut production, with a water cut of over 90%. The difficulty of mining gradually increases, and the crude oil output decreases year by year. In view of the failure of secondary oil recovery to recover residual oil and residual oil, tertiary oil recovery is an important method to enhance oil recovery, and surfactants play an important role in chemical flooding. Whether surfactants are used as main agents or auxiliary agents Oil displacement plays an immeasurable role in greatly enhancing the recovery rate. Among them, sulfonate surfactants are widely used in tertiary oil recovery, such as ORS series, B ~ 100 series and other alkylaryl sulfonate surfactan...

Claims

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Application Information

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IPC IPC(8): C09K8/584C07C303/32C07C309/17C07C309/24
Inventor 强涛涛李新苗王学川
Owner 佛山市灏奇化工发展有限公司
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