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Preparation method of quaternary ammonium salt modified organic magnesium aluminosilicate for thickening oily system

A magnesium aluminum silicate and quaternary ammonium salt technology, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve the problem of limited expansion, low electronegativity of magnesium aluminum silicate, thickening of organic magnesium aluminum silicate Low viscosity-increasing ability and other problems, to achieve the effect of increasing viscosity and thickening ability, easy dispersion and swelling, and improved hydrophobic and lipophilic properties

Active Publication Date: 2018-10-26
JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Due to the low electronegativity of magnesium aluminum silicate, the amount of intercalation of organic quaternary ammonium salt cations is small, resulting in further improvement of the hydrophobic and lipophilic properties of organic magnesium aluminum silicate
[0006] (2) Because the interlayer bonding force of magnesium aluminum silicate is relatively large, the degree of expansion of organic magnesium aluminum silicate in oily systems (such as xylene, etc.) is limited, which directly leads to its thickening and viscosifying ability being significantly lower than that of inorganic magnesium silicate Thickening and Viscosifying Ability of Aluminum in Aqueous System
[0007] (3) The long-chain hydrocarbon molecules in the organic quaternary ammonium salt cation inserted between the layers can easily extend out of the interlayer region, thus shielding a part of the positively charged side parts, making it difficult to form a "card house" gel structure , which further leads to low thickening and viscosifying ability of organomagnesium aluminum silicate in oily system

Method used

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  • Preparation method of quaternary ammonium salt modified organic magnesium aluminosilicate for thickening oily system

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A quaternary ammonium salt-modified organic magnesium aluminum silicate for thickening an oily system is prepared from the following raw material components in parts by mass according to the following steps:

[0025] (1) First, the mass concentration of 1 part of the substance is 0.01mol L -1 Add dilute phosphoric acid aqueous solution to 100 parts of sodium montmorillonite powder and stir evenly, then add 1 part of beryllium oxide and 5 parts of La 2 o 3 And continue to stir evenly, and then roast at 150 ° C for 5 minutes; then take it out and add 1000 parts of pure water, stir well until the montmorillonite is completely dispersed;

[0026] (2) Next, add 10 parts of quaternary ammonium salt octadecyl trimethyl ammonium chloride to 500 parts of pure water, and heat to 75 ° C, under the condition of full stirring until the quaternary ammonium salt is completely dissolved; then the quaternary ammonium Add the salt solution to the montmorillonite suspension prepared in ...

Embodiment 2

[0028] A quaternary ammonium salt-modified organic magnesium aluminum silicate for thickening an oily system is prepared from the following raw material components in parts by mass according to the following steps:

[0029] (1) First, the mass concentration of 5 parts of the substance is 0.1mol L -1Add dilute phosphoric acid aqueous solution to 100 parts of montmorillonite powder and stir evenly, then add 2 parts of magnesium oxide, 3 parts of copper oxide, 10 parts of Ce 2 o 3 , 5 copies of Ln 2 o 3 And continue to stir evenly, and then roast at 250 ° C for 15 minutes; then take it out and add 2000 parts of pure water, stir well until the montmorillonite is completely dispersed;

[0030] (2) Next, add 15 parts of dioctadecyl dimethyl ammonium chloride and 15 parts of dioctadecyl methyl benzyl ammonium chloride to 800 parts of pure water, and heat to 90°C, stirring thoroughly Under the conditions until the quaternary ammonium salt is completely dissolved; then add the quat...

Embodiment 3

[0032] A quaternary ammonium salt-modified organic magnesium aluminum silicate for thickening an oily system is prepared from the following raw material components in parts by mass according to the following steps:

[0033] (1) Firstly, the concentration of 3 substances is 0.05mol L -1 Add dilute phosphoric acid aqueous solution to 100 parts of montmorillonite powder and stir evenly, then add 1 part of magnesium oxide, 1 part of copper oxide, 1 part of zinc oxide, 3 parts of La 2 o 3 , 3 copies of Ce 2 o 3 , 3 copies of Ln 2 o 3 And continue to stir evenly, and then roast at 200 ° C for 10 minutes; then take it out and add 1500 parts of pure water, stir well until the montmorillonite is completely dispersed;

[0034] (2) Next, add 5 parts of octadecyl trimethyl ammonium bromide, 5 parts of dioctadecyl dimethyl ammonium bromide, and 5 parts of octadecyl dimethyl benzyl ammonium chloride to 700 parts Pure water, and heated to 80 ° C, under the condition of sufficient stirr...

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Abstract

The invention discloses a preparation method of quaternary ammonium salt modified organic magnesium aluminosilicate for thickening an oily system. The preparation method is characterized by comprisingthe following steps: taking montmorillonite in the nature as a reaction base material; firstly, carrying out high-temperature solid-phase reaction to prepare PO4<3-> / rare earth modified montmorillonite; then carrying out quaternary ammonium salt intercalation modification to produce the organic magnesium aluminosilicate which has strong expansibility, great viscosity and high thickening capability in the oily system. The quaternary ammonium salt modified organic magnesium aluminosilicate has an extremely great application prospect in industries including oil paint, printing ink, high-temperature lubricating grease and the like.

Description

technical field [0001] The invention relates to the field of organic bentonite, in particular to a method for preparing organic magnesium aluminum silicate with high viscosity and high thickening ability, which is suitable for industries such as paints, inks, and adhesives. Background technique [0002] Over the years, the research on the intercalation exchange reaction between montmorillonite and quaternary ammonium salt in bentonite has been one of the research hotspots in related fields. Although the scientific name of montmorillonite is magnesium aluminum silicate, people generally refer to bentonite concentrate with a purity of magnesium aluminum silicate not higher than 95% as montmorillonite, and only those with a purity higher than 95% are called montmorillonite. For magnesium aluminum silicate. Part A1 in the AlO octahedral layer in the magnesium aluminum silicate structure 3+ By Mg 2+ Instead, the magnesium aluminum silicate layer is negatively charged. In ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/44
CPCC01B33/44
Inventor 张天志张天毅
Owner JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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