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A comb-type hyperdispersant, preparation method and application

A hyperdispersant and comb-type technology, which is applied in the field of new materials and chemical industry, can solve the problems of inability to form steric hindrance and poor dispersion effect, and achieve the effects of controllable structure, difficult release and short production cycle

Inactive Publication Date: 2020-11-27
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method synthesizes a comb-type dispersant, but the longest solvation chain is only an alkane chain with 8 carbons, which cannot form effective steric hindrance, resulting in poor dispersion effect

Method used

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  • A comb-type hyperdispersant, preparation method and application
  • A comb-type hyperdispersant, preparation method and application
  • A comb-type hyperdispersant, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 72g of caprolactone and 5g of n-octanol into a three-necked flask, add 0.5% catalyst stannous octoate after vacuuming for 2 hours, heat up to 130°C, react under vacuum for 12 hours and cool the product to room temperature to obtain a white The solid is the solvated chain. Weigh 32g of solvated chain, 4g of styrene maleic anhydride and dissolve it in 84g of dioxane. After the raw materials are completely dissolved, add 1.44g of catalyst p-toluenesulfonic acid, control the reaction temperature to 100°C, and remove the solvent after 8h of reaction, namely The hyperdispersant product H1 was obtained. R is hydrogen in this embodiment, R 1 is phenyl, R 2 , R 3 It is hydrogen or polyester, the molecular weight of polyester is about 2000, the ratio of hydrogen to polyester is 3:2, x=10, y=10.

Embodiment 2

[0034] Weigh 72g of caprolactone and 5g of n-octanol into a three-necked flask, add 0.5% catalyst stannous octoate after vacuuming for 2 hours, heat up to 130°C, react under vacuum for 12 hours and cool the product to room temperature to obtain a white The solid is the solvated chain. Weigh 8g of solvated chain, 4g of styrene maleic anhydride and dissolve in 28g of dioxane. After the raw materials are completely dissolved, add 0.48g of catalyst p-toluenesulfonic acid, control the reaction temperature to 100°C, and remove the solvent after 8h of reaction, namely The hyperdispersant product H2 is obtained. R is hydrogen in this embodiment, R 1 is phenyl, R 2 , R 3 It is hydrogen or polyester, the molecular weight of polyester is about 2000, the ratio of hydrogen to polyester is 9:1, x=10, y=10.

Embodiment 3

[0036] Weigh 110g of caprolactone and 5g of n-octanol into a three-necked flask, add 0.5% catalyst stannous octoate after evacuating for 2 hours, heat up to 130°C, react under vacuum for 12 hours, and cool the product to room temperature to obtain a white The solid is the solvated chain. Weigh 60g of solvated chain, 4g of styrene maleic anhydride and dissolve in 150g of dioxane, add 2.56g of catalyst p-toluenesulfonic acid after the raw materials are completely dissolved, control the reaction temperature to 100°C, and remove the solvent after 8h of reaction, namely The hyperdispersant product H3 was obtained. In this embodiment R is hydrogen, R 1 is phenyl, R 2 , R 3 It is hydrogen or polyester, the molecular weight of polyester is about 3000, the ratio of hydrogen to polyester is 1:1, x=10, y=10.

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Abstract

The invention relates to a comb-shaped hyper-dispersant and belongs to the technical fields of novel materials and chemical industry. The invention further discloses a preparation method of the hyper-dispersant; the preparation method comprises the following steps: synthesizing a polyester type solvated chain or a polyamide type solvated chain and carrying out grafting reaction with an anchoring group; taking dioxane or tetrahydrofuran as a solvent and adding a grafting reaction catalyst; carrying out grafting reaction on the prepared polyester type or polyamide type solvated chain and a maleic anhydride copolymer, wherein the reaction temprature is 60 DEG C to 180 DEG C and the reaction time is 2h to 72h. The invention further discloses application of the comb-shaped hyper-dispersant as a pigment to paint, printing ink, battery conductive slurry and a polymer system. Meanwhile, the invention provides application of the hyper-dispersant as filling to the paint, the printing ink, the battery conductive slurry and the polymer system. The hyper-dispersant provided by the invention can meet dispersion requirements of different inorganic particles in different organic systems, so that the application range of modified powder is generalized.

Description

technical field [0001] The invention relates to the technical field of new materials and chemical industry, in particular to a dispersant, a preparation method and an application of the dispersant. Background technique [0002] In the fields of coatings, inks, ceramics, rubber and plastics, etc., in order to reduce product costs and improve product performance, ultrafine inorganic particles such as calcium carbonate, titanium dioxide, talcum powder, mica, kaolin, etc. are usually used as pigments, fillers or functional materials. However, due to the large specific surface area and special surface state of ultrafine inorganic particles, it is inevitable to encounter dispersion problems during production and application. The dispersion effect not only affects production efficiency, energy consumption, but also directly It is related to the final quality of the product, so solving the dispersion problem of ultrafine powder has become one of the key technologies affecting produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/02C09D7/65C09D11/037C09D11/03C08L87/00
CPCC08G81/027C08G81/028C08L87/005C09D7/65C09D11/03C09D11/037
Inventor 公维光景希玮冯中军郑柏存林珩易红玲魏婷
Owner EAST CHINA UNIV OF SCI & TECH
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