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Method for preparing polyether surfactant

A surfactant and polyether technology, applied in the field of preparation of polyether surfactants, can solve the problems of restricting large-scale production and commercial application, strict reaction conditions, etc., and achieve safe use, simple synthesis, and high monomer conversion rate Effect

Active Publication Date: 2011-04-06
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some shortcomings in the existing preparation methods, such as the strict reaction conditions of the cationic ring-opening polymerization method, which limits large-scale production and commercial application (U.S.Pat.No.5,468,841)

Method used

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  • Method for preparing polyether surfactant
  • Method for preparing polyether surfactant
  • Method for preparing polyether surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, the preparation of polyether surfactant

[0030] (1) Preparation of N, N-dimethylhexadecyl-1,2-epoxyhexyl ammonium bromide

[0031] Weigh 2.71g (0.01mol) of N,N-dimethylhexadecylamine (the molar ratio of it to 6-bromo-1,2-epoxyhexane is 1:1.1), pour 20mL of anhydrous acetone into Equipped with a condenser tube, a constant pressure dropping funnel and a 150mL three-neck flask with a stirring bar, then put it into a constant temperature water bath at 20°C, start stirring and stir evenly. Weigh 1.97g (0.011mol) of 6-bromo-1,2-epoxyhexane (the mass and number ratio of it and acetone is 1:7) and pour it into a constant pressure dropping funnel, then add 6-bromo-1 , 2-Epoxyhexane was slowly dropped into the three-necked flask, and the drop was completed within 15 minutes, and the reaction was carried out for 12 hours. After the reaction was completed, it was concentrated and suspended to dryness, and washed several times with anhydrous ether, then put it in a ...

Embodiment 2

[0034] Embodiment 2, the preparation of polyether surfactant

[0035] (1) Preparation of N, N-dimethylhexadecyl-1,2-epoxybutyl ammonium bromide

[0036] Weigh 5.39g (0.02mol) of N,N-dimethylhexadecylamine (the molar ratio of 4-bromo-1,2-epoxybutane is 1:1), pour 25mL of acetone into a condenser Tube, constant pressure dropping funnel and a 150mL three-necked flask with a stirring bar, and then put it in a constant temperature water bath at 70°C, start stirring and stir evenly. Weigh 3.02g (0.02mol) of 4-bromo-1,2-epoxybutane (the mass fraction ratio of it and acetone is 1:6) and pour it into a constant pressure dropping funnel, then pour 4-bromo-1 , 2-epoxybutane was slowly dropped into the three-necked bottle, and the drop was completed within 15 minutes, and the reaction was 24 hours. After the reaction was completed, it was concentrated and suspended to dryness, and washed several times with anhydrous ether, then put it in a vacuum drying oven to dry for 48 hours at a dry...

Embodiment 3

[0039] Embodiment 3, the preparation of polyether surfactant

[0040] (1) Preparation of N, N-dimethylhexadecyl-1,2-epoxybutyl ammonium bromide

[0041] The experimental procedure is the same as the step (1) of Example 1, except that the quality of N,N-dimethylhexadecylamine is 2.71g (0.01mol), 6-bromo-1,2-epoxyhexane The mass of N,N-dimethylhexadecyl-1,2-epoxyhexylammonium bromide was 3.92g, and the yield was 88%.

[0042] (2) Preparation of polyether surfactant

[0043] The experimental procedure is the same as the step (2) of Example 1, except that the quality of N,N-methylhexadecyl-1,2-epoxyhexyl ammonium bromide is 1.12g (0.0025mol), and the initiator three The amount of boron fluoride ether is 0.001 mol, and the obtained light yellow solid is the polyether surfactant, the mass is 0.99 g, the degree of polymerization is 6, and the yield is greater than 85%.

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Abstract

The invention discloses a method for preparing a hydrophobic alkyl chain quaternary ammonium salt-containing polyether surfactant. The method comprises the following steps of: (1) performing quaterisation on epoxy compounds shown as formula (I) and formula (II) and tertiary amine shown as formula (III) to obtain the compound shown as formula (IV); and (2) performing ring opening polymerization onthe obtained compound shown as the formula (IV) to obtain the polyether surfactant shown as formula (I). Because a hydrophobic alkyl-containing quaternary ammonium salt is introduced in the polymer, compared with the pure polyether surfactant, the polyether surfactant has excellent performance and can be directly applied to many fields, such as industrial field of petroleum, medicaments, printing, daily chemicals and the like.

Description

technical field [0001] The invention relates to a preparation method of a surfactant, in particular to a preparation method of a polyether surfactant, in particular to a preparation method of a polyether surfactant containing a hydrophobic alkyl chain quaternary ammonium salt. Background technique [0002] The polyether surfactant with a side chain containing a hydrophobic alkyl chain quaternary ammonium salt refers to a class of water-soluble polymers that introduce a quaternary ammonium salt with a long hydrophobic alkyl chain on the side chain of the polyether. The polyether polymer surfactant has good water solubility, and has remarkable washing, emulsifying, foaming, wetting, solubilizing and other properties, and has broad application prospects in the fields of petroleum, paint, medicine, daily chemical and medicine. . [0003] The compound represented by formula (I) is an important class of polyether surfactants whose side chains contain quaternary ammonium salts of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/18B01F17/42C09K23/18C09K23/42
Inventor 张磊吕鑫张健谭业邦
Owner CHINA NAT OFFSHORE OIL CORP
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