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Tri-anionic-nonionic surfactant and preparation method thereof

A non-ionic surface and active agent technology, applied in the direction of chemical instruments and methods, dissolution, drilling compositions, etc., can solve the problem that the length of the alkyl chain cannot be adjusted at will, the existence of ethylene oxide addition process, equipment and safety Require high-level problems, achieve the effect of low critical micelle concentration, excellent anti-decomposition ability, and high interfacial activity

Active Publication Date: 2016-02-10
SHANDONG XINGANG CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it also has the following shortcomings or deficiencies: ① The raw material used is alkylphenol with the same carbon chain length, and the length of the alkyl chain cannot be adjusted at will; ② The number of EO of the three polyoxyethylene ether chains in the molecule is the same or basically equivalent , and cannot be adjusted at will; ③ there is an ethylene oxide addition process, which requires high equipment and safety; The method of converting nonionic surfactants into anionic-nonionic surfactants was not further explored, and the synthesized products only have properties higher than ordinary nonionic surfactants

Method used

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preparation example Construction

[0052] The preparation method of triple anion-nonionic surfactant mainly comprises following three continuous steps:

[0053] Step 1: Preparation of alkylphenol polyoxyethylene ether methylol intermediate: add 1 mol of alkylphenol polyoxyethylene ether with carbon number n and EO number m into the reaction vessel, add 0.2 to 1.2 mol of solid base or 50% liquid alkali, heat up to 40-60°C and stir evenly, add 2.0-3.0mol formaldehyde, keep the temperature at 50-80°C, react for 4-24 hours, and prepare the alkylphenol polyoxyethylene ether hydroxymethyl intermediate. The molecular structural formula is as follows:

[0054]

[0055] Step 2: Prepare triple alkylphenol polyoxyethylene ether nonionic surfactant: add 2 mol of alkylphenol polyoxyethylene ether with carbon number x and EO number y into the reaction vessel, adjust the pH to 6-7 with hydrochloric acid, Add an acidic catalyst, gradually raise the temperature to 60-80°C to remove moisture by vacuuming, then raise the temp...

Embodiment 1

[0071] Embodiment 1: Preparation of triple alkylphenol polyoxyethylene ether sodium acetate

[0072] Add 1 mol of octylphenol polyoxyethylene ether (4EO) to the reaction vessel, add 0.5 mol of solid sodium hydroxide, heat up to 55°C and stir evenly, add 2.2mol of formaldehyde solution, keep the temperature at 60°C, and react for 6 hours.

[0073]Add 2mol of nonylphenol polyoxyethylene ether (10EO) into the reaction vessel, adjust the pH to 6-7 with hydrochloric acid, add 5g of p-toluenesulfonic acid, gradually raise the temperature to 75°C and vacuumize to remove moisture, stir and react at 120°C for 4h .

[0074] Add 3 mol of solid sodium hydroxide and 500 ml of toluene to the reaction vessel, stir and raise the temperature to 110°C for reflux to separate the water, keep it at 110°C for 4 hours, cool down to 60°C, add 3.3 mol of sodium chloroacetate in batches, keep it warm for 4 hours, add hydrochloric acid to adjust When the pH is neutral, toluene and water are removed und...

Embodiment 2

[0075] Embodiment 2: Preparation of triple alkylphenol polyoxyethylene ether sodium ethyl sulfonate

[0076] Add 1mol of nonylphenol polyoxyethylene ether (10EO) into the reaction vessel, add 0.5mol of solid sodium hydroxide, heat up to 55°C and stir evenly, add 2.2mol of formaldehyde solution, keep the temperature at 60°C, and react for 6h.

[0077] Add 2mol of octylphenol polyoxyethylene ether (8EO) into the reaction vessel, adjust the pH to 6-7 with hydrochloric acid, add 5g of p-toluenesulfonic acid, gradually raise the temperature to 75°C and vacuumize to remove moisture, and stir the reaction at 120°C 4h.

[0078] Add 3 mol of solid sodium hydroxide and 500 ml of toluene to the reaction vessel, stir and raise the temperature to 110°C for reflux to separate the water, keep the temperature at 110°C for 4 hours, cool down to 60°C, add 3.3 mol of sodium chloroethylsulfonate in batches, and keep the temperature for 5 hours. Add hydrochloric acid to adjust the pH to neutral, ...

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Abstract

A tri-anionic-nonionic surfactant has the following structure formula, wherein H<2x+1>C<x> and H<2n+1>C<n> are alkyl group chains, x is an integer of 8 to 24 and n is an integer of 8 to 24 and x can be equal to or different from n; O(CH2CH2O)y and (CH2CH2O)m are polyoxyethylene groups, wherein y is an integer of 1 to 30 and m is an integer of 1 to 30, and y can be equal to or different from m; Y is an anionic group; and M is Na<+>, K<+> or NH<4><+> ions. A preparation method includes the following steps: 1) preparing an alkylphenol polyoxyethylene ether hydroxymethyl intermediate; 2) preparing a tri-alkylphenol polyoxyethylene ether nonionic surfactant; and 3) preparing the tri-anionic-nonionic surfactant. The surfactant has excellent alkali resistance, salt resistance and high temperature resistance, is excellent in dispersing property and anti-decomposition capability, has excellent compatibility with a polymer and is suitable for the fields of development and exploitation of oil reservoir in severe conditions, such as high temperature, high slat, thick oil, low permeation and the like.

Description

technical field [0001] The invention relates to a surfactant and a preparation method thereof, in particular to a triple anion-nonionic surfactant and a preparation method thereof. Background technique [0002] Chinese patent CN200810152433.3 discloses a method for preparing a triple nonionic surfactant, that is, an intermediate is obtained through the reaction of an alkylphenol and formaldehyde, and then an alkylphenol with twice the amount of the intermediate is reacted with the intermediate to form an alkyl Phenol triple structure, and finally react with ethylene oxide to form alkylphenol polyoxyethylene ether triple surfactant. According to this invention patent, a triple nonionic surfactant with exact structure can be obtained, and has properties superior to nonionic gemini surfactants. But it also has the following shortcomings or deficiencies: ① The raw material used is alkylphenol with the same carbon chain length, and the length of the alkyl chain cannot be adjuste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/42B01F17/44B01F17/20B01F17/04C09K8/584C09K23/42C09K23/04C09K23/20C09K23/44
Inventor 丁锡刚
Owner SHANDONG XINGANG CHEM
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