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Gemini surfactant with antibacterial function, and preparation method thereof

A technology of gemini surface and active agent, applied in the field of gemini surfactant and its preparation, to achieve the effects of excellent surface tension, antibacterial performance, and excellent antibacterial rate

Pending Publication Date: 2021-11-19
PUYANG SHENGYUAN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are various types of gemini surfactants, but they cannot meet the needs of various industries. Therefore, the synthesis of a surfactant with mild reaction conditions and high surface activity has attracted more and more attention.
Special surfactants often have unique physical and chemical properties, such as high surface activity, high stability, high temperature resistance, etc., but no gemini surfactants with antibacterial function have been seen.

Method used

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  • Gemini surfactant with antibacterial function, and preparation method thereof

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Effect test

Embodiment 1

[0032] The present embodiment is a kind of preparation method of gemini surfactant with antibacterial function, and this preparation method comprises the following steps:

[0033] (a) According to the molar ratio of succinic acid and C12 fatty primary alcohol is 1.05:1, succinic acid and C12 fatty primary alcohol are added to chloroform, and acidic cation exchange resin is used as a catalyst to carry out esterification reaction at 65°C 2h, make alkyl primary alcohol succinate;

[0034] (b) According to the molar ratio of aminochitooligosaccharide and quaternized ethyl acetate is 1: 1, aminochitooligosaccharide (polymerization degree is 2) and quaternized ethyl acetate are used as the condition of catalyst in acidic cation exchange resin React at 85°C for 3 hours to obtain quaternized sugars;

[0035] (c) according to the mol ratio of primary alkyl alcohol succinate and quaternized sugar is 2: 1, alkyl primary alcohol succinate and quaternized sugar are in acidic cationic exch...

Embodiment 2

[0037] The present embodiment is a kind of preparation method of gemini surfactant with antibacterial function, and this preparation method comprises the following steps:

[0038] (a) According to the molar ratio of succinic acid and C12 fatty primary alcohol is 1.1:1, add succinic acid and C12 fatty primary alcohol to chloroform, use acidic cation exchange resin as catalyst, and carry out esterification reaction at 75°C 4h, make alkyl primary alcohol succinate;

[0039] (b) According to the molar ratio of aminochitooligosaccharides and quaternized ethyl acetate is 1: 3, aminochitooligosaccharides (polymerization degree is 8) and quaternized ethyl acetate are used as catalyst conditions in acidic cation exchange resin React at 95°C for 5 hours to obtain quaternized sugars;

[0040] (c) according to the mol ratio of primary alkyl alcohol succinate and quaternized sugar is 2: 1, alkyl primary alcohol succinate and quaternized sugar are in acidic cationic exchange resin under th...

Embodiment 3

[0042] The present embodiment is a kind of preparation method of gemini surfactant with antibacterial function, and this preparation method comprises the following steps:

[0043] (a) According to the molar ratio of succinic acid and primary C12 fatty alcohol as 1.1:1, add succinic acid and primary C12 fatty alcohol to chloroform, use acidic cation exchange resin as catalyst, and perform esterification reaction at 65°C 3h, make alkyl primary alcohol succinate;

[0044] (b) According to the molar ratio of aminochitooligosaccharides and quaternized ethyl acetate is 1: 2, aminochitooligosaccharides (polymerization degree is 6) and quaternized ethyl acetate are used as catalyst conditions in acidic cation exchange resin React at 85°C for 4 hours to obtain quaternized sugar;

[0045] (c) according to the mol ratio of primary alkyl alcohol succinate and quaternized sugar is 2: 1, alkyl primary alcohol succinate and quaternized sugar are in acidic cationic exchange resin under the c...

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Abstract

The invention discloses a gemini surfactant with an antibacterial function, and a preparation method thereof. The preparation method comprises the following steps: carrying out esterification reaction on succinic acid and alkyl primary alcohol to prepare succinic acid alkyl primary alcohol ester; reacting glycosaminoglycan with quaternized ethyl acetate to prepare quaternized sugar; and carrying out esterification reaction on succinic acid alkyl primary alcohol ester and quaternized sugar to prepare the gemini surfactant with the antibacterial function. According to the preparation method disclosed by the invention, through limitation of specific raw materials and a preparation process, the prepared gemini surfactant has excellent surface tension and antibacterial performance, and particularly has an excellent antibacterial rate on escherichia coli and staphylococcus aureus.

Description

technical field [0001] The invention relates to the technical field of surfactants, in particular to a gemini surfactant with antibacterial function and a preparation method thereof. Background technique [0002] Gemini surfactants refer to two or more identical or almost identical surfactant monomers that are linked by chemical bonds at or near the hydrophilic head group with a linking group. Together, a surfactant is formed. [0003] At present, there are various types of gemini surfactants, but they cannot meet the needs of various industries. Therefore, the synthesis of a surfactant with mild reaction conditions and high surface activity has attracted more and more attention. Special surfactants often have unique physical and chemical properties, such as high surface activity, high stability, high temperature resistance, etc., but no gemini surfactants with antibacterial function have been seen. Contents of the invention [0004] The object of the present invention i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/18C07H13/04C07H1/00A01N43/16A01P1/00C09K23/18
CPCC07H13/04C07H1/00A01N43/16
Inventor 孟祥凯李正利赵建国郭照民张明勇
Owner PUYANG SHENGYUAN ENERGY TECH