Hydrophobic associative cationic xanthan gum preparation method

A technology of hydrophobic association and cationic yellow, applied in the directions of botanical equipment and methods, chemical instruments and methods, drilling compositions, etc., can solve the problem of inability to reduce viscosity with heavy oil, achieve safe use and improve biological stability The effect of stability and easy availability of raw materials
CN106832035AActive Publication Date: 2017-06-13SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2017-06-13

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Abstract

The present invention relates to a hydrophobic associative cationic xanthan gum preparation method, which comprises: synthesizing epoxypropyl dodecyldimethylammonium chloride from N.N-dimethyldodecylamine and epichlorohydrin in acetone; and carrying out a reaction on the epoxy group in the quaternary ammonium salt and the hydroxyl group (-OH) in xanthan gum by using the epoxypropyl dodecyldimethylammonium chloride as a modifier to introduce the quaternary ammonium salt having a long alkyl chain into the xanthan gum so as to obtain the hydrophobic associative water-soluble xanthan gum having surface activity. According to the present invention, the reaction is performed in water, the reaction conditions are mild, the raw materials are easy to obtain, and the post-treatment of the product is easy; and the modified xanthan gum has low surface tension and good solubility, can reduce the viscosity of heavy oil through the emulsification effect, can change the wettability of the stratum surface, and can increase the fluidity of the heavy oil.
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Description

Technical field

[0001] The invention relates to a preparation method of hydrophobically associating cationic xanthan gum, which belongs to the technical field of polymer chemistry and polymer modification. Background technique

[0002] Xanthan gum is a bacterial extracellular polysaccharide. It is a pentasaccharide repeating unit composed of D-glucose, D-mannose and D-glucuronic acid. The main chain is connected to D-glucose by β-1,4 bonds. The chain is formed by alternately connecting two D-mannose and one D-glucuronic acid. Part of the mannose on the main chain is acetylated at C-6, and part of the mannose at the end of the side chain has a pyruvate group attached to the C at positions 4 and 6. The primary structure of xanthan gum is shown in formula I.

[0003]

[0004] Xanthan gum has good thickening properties, emulsification stability, water solubility and acid and alkali resistance, so it has a very wide range of applications in food processing, cosmetics, agriculture, tex...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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