Synthesis method of alkyl block polyether quaternary ammonium salt surfactant

A technology of surfactants and alkyl blocks, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems that cationic surfactants cannot be used in combination, the viscosity of polymers is reduced, and they cannot be used. Excellent emulsifying and wetting properties, strong compounding ability and low adsorption capacity

Active Publication Date: 2022-01-28
SHANDONG DAMING FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cationic surfactants are easy to react with polymers for oil displacement (partially hydrolyzed polyacrylamide), resulting in a decrease in polymer viscosity, so they cannot be used in binary compound flooding in oil fields; the formation rock surface is negatively charged, and cationic surfactants It is very easy to adsorb on the surface of the rock and thus become ineffective, so it cannot be used in most working conditions; cationic surfactants cannot be combined with sodium dodecylbenzenesulfonate, heavy alkylbenzenesulfonic acid, and petroleum sulfonate commonly used in oilfield chemical flooding. Compound use of anionic surfactants such as acid salts

Method used

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  • Synthesis method of alkyl block polyether quaternary ammonium salt surfactant
  • Synthesis method of alkyl block polyether quaternary ammonium salt surfactant
  • Synthesis method of alkyl block polyether quaternary ammonium salt surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Synthesis of alkyl block polyether quazene salt surfactants using different bases

[0037] 1) Sodification reaction: 0.5 mol of alkyl block polyether and 0.55 mol "base" (sodium methanol, sodium ethanol, sodium hydroxide, potassium hydroxide, potassium hydroxide, and potassium hydroxide) are added to the three bottles, and then the reaction phase The medium is introduced into nitrogen, the flow rate of nitrogen is 2 l / min, and stirred at the stirring, and the stirring speed is 250 r / min, the oil bath temperature is 80 ° C, the reaction time is 6 h, to obtain an alkyl block polyether sodium salt or potassium salt.

[0038] 2) Williamson into an ether reaction: After the first step is completed, the nitrogen is closed, and the reaction temperature is reduced to 50 ° C, 1 mol of 1,2-dichloroethane is added, and the electric stirring is activated, and the rotation speed is 200R / min. Under 55 ° C, the reaction was reacted for 4 h to give chlorolymethyl alkyl blo...

Embodiment 2

[0044] Example 2: Synthesis of an alkyl block polyether quazene salt surfactant using different reaction times

[0045] 1) Sodium reaction: 0.5 mol of alkyl block polyether and 0.55 mol sodium sodium sodium were added to the three flasks, and then nitrogen gas in the reaction phase, the stirring was opened, and the flow rate of nitrogen was 2 l / min, set the stirring speed. It was 250 r / min, the oil bath temperature was 80 ° C, the reaction time was 6 h, and the alkyl block polyether sodium salt was obtained.

[0046] 2) Williamson into an ether reaction: After the first step is completed, the nitrogen is closed, and the reaction temperature is reduced to 50 ° C, 1 mol of 1,2-dichloroethane is added, and the electric stirring is activated, and the rotation speed is 200R / min. Under 55 ° C, the reaction was reacted for 4 h to give chlorolymethyl alkyl block polyethers.

[0047] 3) Quaternization Reaction: Reaction 2) After the end, the remaining 1,2-dichloroethane is rotated wi...

Embodiment 3

[0051] Example 3: Synthesis of alkyl block polyether quazene salt surfactants using different tertiary amine reactants

[0052] 1) Sodium reaction: 0.5 mol of alkyl block polyether and 0.55 mol sodium sodium sodium were added to the three flasks, and then nitrogen gas in the reaction phase, the stirring was opened, and the flow rate of nitrogen was 2 l / min, set the stirring speed. It was 250 r / min, the oil bath temperature was 80 ° C, the reaction time was 6 h, and the alkyl block polyether sodium salt was obtained.

[0053] 2) Williamson into an ether reaction: After the first step is completed, the nitrogen is closed, and the reaction temperature is reduced to 50 ° C, 1 mol of 1,2-dichloroethane is added, and the electric stirring is activated, and the rotation speed is 200R / min. Under 55 ° C, the reaction was reacted for 4 h to give chlorolymethyl alkyl block polyethers.

[0054] 3) Quaternization reaction: Reaction 2) After the end, the remaining 1,2-dichloroethane is ro...

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Abstract

The invention discloses a synthesis method of an alkyl block polyether quaternary ammonium salt surfactant, and mainly belongs to the field of petroleum chemistry. The synthesis method comprises the following steps of: making alkyl block polyether react with alkali to obtain alkyl block polyether sodium salt or alkyl block polyether potassium salt; adding 1, 2-dichloroethane, and reacting for 4-5 hours to obtain chloroethyl alkyl block polyether; and recovering the unreacted 1, 2-dichloroethane, adding tertiary amine of which the molar weight is 1-1.2 times of the molar weight of the alkyl block polyether, adding a NaOH aqueous solution when the conversion rate of the tertiary amine reaches 70-75%, raising the reaction temperature to 100 DEG C, and continuously reacting for 6-7 hours. The product obtained by the method of the invention has the advantages of strong compounding capacity, good emulsifying property, temperature resistance, salt resistance and corrosion resistance.

Description

Technical field [0001] The present invention relates to the field of petrochemical, and is specifically a synthesis method of an alkyl block polyether quaternary ammonium salt surfactant. Background technique [0002] Cationic surfactants are a surfactant used in daily chemical, oilfield chemistry, and industrial cleaning. [0003] In the field of daily and industrial cleaning, cationic surfactants have excellent properties such as decontamination, sterilization, foaming, etc., and can also make fabrics soft, elastic, so in fabric softges, shampoo, conditioner, sterilization It is widely used in products such as liquids. However, in the process of use, the cationic antifungal can not be used with sodium dodecyl benzene sulfonate, sodium fatty acid methyl sulfate, fatty acid soap, and other anionic antibodies, etc., to a large extent. Use of use and performance in the daily products. [0004] In the field of oilfield chemistry, cationic surfactants can react with glials and asphal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/00C08G65/331C08G65/333C08G65/337C09K8/584C09K8/60
CPCC08G65/00C08G65/331C08G65/337C08G65/33306C09K8/584C09K8/604
Inventor 李国利庞增昌王志强刘平王开欣冷军誉
Owner SHANDONG DAMING FINE CHEM CO LTD
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