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Synthesis method of EBS-containing composite dispersant with low volatility and low acid value

A composite dispersant and synthesis method technology, applied in the synthesis of low acid value composite dispersant, low volatility field, can solve the problems of low volatility, high volatile content, unsatisfactory dispersion effect of EBS composite dispersant, etc., to achieve Effects of improving ductility, increasing thermal decomposition temperature, and improving yellowing resistance

Pending Publication Date: 2022-04-15
青岛赛诺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to overcome the high volatile content and high acidity of the EBS dispersant, and the unsatisfactory dispersing effect of the EBS composite dispersant, and provide a synthetic method of a low-volatility, low-acid value composite dispersant containing EBS

Method used

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  • Synthesis method of EBS-containing composite dispersant with low volatility and low acid value
  • Synthesis method of EBS-containing composite dispersant with low volatility and low acid value
  • Synthesis method of EBS-containing composite dispersant with low volatility and low acid value

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Weigh 85.2 grams (0.3mol) of stearic acid and 9 grams of polyethylene wax, put them all into a three-necked flask, heat up to 90°C, and after all the raw materials are melted and mixed uniformly, add 9.02 grams (0.15mol) of ethylenediamine ) through the dropping funnel, evenly added dropwise into the flask, and the dropping continued for 0.7 hours. After the dropping was completed, the temperature was raised to 200°C, and kept at a constant temperature for 1.5 hours; after the constant temperature was completed, 13 grams of magnesium oxide and 7 gram, was added to a three-necked flask, and mixed uniformly for no less than 30 minutes; then the product was filtered and poured into a stainless steel pan, cooled naturally, and crushed to obtain a slightly yellow solid product.

Embodiment 2

[0044] Weigh 85.2 grams (0.3mol) of stearic acid and 9 grams of polyethylene wax, put them all into a three-necked flask, heat up to 90°C, and after all the raw materials are melted and mixed uniformly, add 9.02 grams (0.15mol) of ethylenediamine ) through the dropping funnel, evenly added dropwise into the flask, and the dropping continued for 0.7 hours. 7 grams, was added to a three-necked flask, and mixed uniformly for no less than 30 minutes; then the product was filtered and poured into a stainless steel plate, and after natural cooling, it was crushed to obtain a yellowish solid product.

Embodiment 3

[0046] Weigh 85.2 grams (0.3mol) of stearic acid and 9 grams of polyethylene wax, put them all into a three-necked flask, heat up to 90°C, and after all the raw materials are melted and mixed uniformly, add 9.02 grams (0.15mol) of ethylenediamine ) through the dropping funnel, evenly added dropwise into the flask, and the dropping continued for 0.7 hours. After the dropping was completed, the temperature was raised to 200°C, and kept at a constant temperature for 1.5 hours; Add 13 grams into a three-necked flask, and mix evenly for no less than 30 minutes; then filter the product and pour it into a stainless steel plate, cool it down naturally, and break it to get a yellowish solid product.

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Abstract

The invention belongs to the technical field of dispersing agents, and provides a synthesis method of a low-volatility and low-acid-value composite dispersing agent containing EBS in order to solve the problems that the EBS dispersing agent is high in volatile matter content and acidity and the EBS composite dispersing agent is not ideal in dispersing effect. Comprising the following steps: heating non-polar wax and stearic acid until the non-polar wax and the stearic acid are completely melted and uniformly mixed; the preparation method comprises the following steps: dropwise adding ethylenediamine into a mixture of stearic acid and non-polar wax, and continuously reacting after dropwise adding to obtain an EBS mixed product A; pouring magnesium oxide and / or calcium oxide into the mixed product A, fully stirring and uniformly mixing to obtain a product B; and after the reaction is finished, filtering the hot product B through a filter screen, slowly pouring the product B into a stainless steel plate, cooling, crystallizing, crushing or crushing to obtain a terminal product. The acid value and volatility of the synthesized composite dispersant are effectively reduced, the thermal stability is obviously improved, the thermal decomposition temperature is obviously improved, and the composite dispersant has good dispersity and lubricity.

Description

technical field [0001] The invention belongs to the technical field of dispersants, and in particular relates to a synthesis method of a composite dispersant with low volatility and low acid value containing EBS. Background technique [0002] Dispersant is a surfactant that has two opposite properties of lipophilicity and hydrophilicity in the molecule; EBS is a kind of hyperdispersant, and its mechanism of action includes two parts: anchoring mechanism and solvation mechanism. [0003] The molecular structure of the hyperdispersant is divided into two parts: one part is an anchoring group, and the common ones are one R2N, one R3N+, one COOH, one COO-, one SO3H, one SO2-, one PO42-. Polyamines, polyols and Polyether, etc., they can be tightly adsorbed on the surface of solid particles through interactions such as ionic bonds, covalent bonds, hydrogen bonds, and van der Waals forces to prevent the desorption of hyperdispersants; the other part is a solvation chain, and the co...

Claims

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Application Information

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IPC IPC(8): C08K5/20C08K5/09C08K5/098C08L23/06C08L23/12C08K3/04C08J3/22C08J5/18
Inventor 陈建红王永智焦京广焦翠广陈婷婷李伟李国英
Owner 青岛赛诺新材料有限公司
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