Styrene-maleic anhydride structure containing and graft-modified water-based pigment dispersant and preparation method thereof

A technology of grafting modifier and maleic anhydride, which is applied in the direction of pigment slurry, etc., can solve the problems of insufficient anchoring ability and poor steric hindrance, and achieve the effects of large steric hindrance, strong anchoring ability and strong tinting strength

Active Publication Date: 2019-05-21
SUZHOU SUNMUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of insufficient anchoring ability and poor steric hindrance of current styrene-maleic anhydride dispersants, the invention provides a water-based pigment dispersant containing styrene-maleic anhydride structure and graft modification and its preparation method , the dispersant prepared by this preparation method is a graft-modified block copolymer

Method used

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  • Styrene-maleic anhydride structure containing and graft-modified water-based pigment dispersant and preparation method thereof
  • Styrene-maleic anhydride structure containing and graft-modified water-based pigment dispersant and preparation method thereof
  • Styrene-maleic anhydride structure containing and graft-modified water-based pigment dispersant and preparation method thereof

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Effect test

specific Embodiment 1

[0044] Mix 27 parts of styrene, 32 parts of styrene derivative A1, 18 parts of maleic anhydride, 23 parts of acrylic acid derivative B1 and 300 parts of 1,4-dioxane into a mixed solution and place it in the reactor In, nitrogen gas was introduced for 25 minutes and the temperature was controlled at 85°C, and a mixture consisting of 8 parts of azobisisobutyronitrile, 4 parts of dodecanethiol and 50 parts of 1,4-dioxane was slowly added dropwise to In the reactor, the dropping time is 3 hours, and the reaction is continued for 2 hours after the dropping; continue to add 10.8 parts of 3-aminopropyltrimethoxysilane and 4 parts of p-toluenesulfonic acid, the reaction temperature is 85 °C, and the reaction time is 4 Hours, after the reaction is over, remove 1,4-dioxane and cool to room temperature to obtain a water-based pigment dispersant containing styrene-maleic anhydride and graft-modified.

specific Embodiment 2

[0046] 15 parts of styrene, 40 parts of styrene derivative A2, 25 parts of maleic anhydride, 20 parts of acrylic acid derivative B2 four monomers and 300 parts of cyclohexane are made into a mixed solution and placed in a reactor, and nitrogen gas is introduced For 15 minutes, the temperature was controlled at 100°C, and the mixture composed of 8 parts of benzoyl peroxide, 4 parts of α-methylstyrene linear dimer and 50 parts of cyclohexane was slowly added dropwise to the reactor, and the The time is 2 hours, continue to react for 3 hours after the dropwise addition; continue to add 10.8 parts of 3-aminopropyltriethoxysilane and 4 parts of aluminum trichloride, the reaction temperature is 100 ° C, the reaction time is 2 hours, the reaction ends Afterwards, the cyclohexane was removed, cooled to room temperature, and a water-based pigment dispersant containing styrene-maleic anhydride and graft-modified was obtained.

specific Embodiment 3

[0048] 21 parts of styrene, 28 parts of styrene derivative A3, 13 parts of maleic anhydride, 38 parts of acrylic acid derivative B3 four monomers and 300 parts of tetrahydrofuran were formulated into a mixed solution and placed in a reactor, and nitrogen gas was introduced for 30 minutes. The temperature is controlled at 70°C, and the mixed solution consisting of 8 parts of dicumyl peroxide, 4 parts of dodecanethiol and 50 parts of tetrahydrofuran is slowly added dropwise to the reactor, and the dropping time is 4 hours. Continue to react for 1 hour; continue to add 10.8 parts of 3-aminopropyldimethylmethoxysilane and 4 parts of triethylamine, the reaction temperature is 70°C, and the reaction time is 6 hours. After the reaction, remove tetrahydrofuran and cool to room temperature. A water-based pigment dispersant containing styrene-maleic anhydride and graft-modified is obtained.

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Abstract

The invention discloses a styrene-maleic anhydride structure containing and graft-modified water-based pigment dispersant and a preparation method thereof. After a segmented copolymer is formed by using four monomers of styrene, a styrene derivative, maleic anhydride and an acrylic acid derivative to carry out free radical copolymerization, and the segmented copolymer is graft-modified by using agraft modifier to prepare the styrene-maleic anhydride structure containing and graft-modified water-based pigment dispersant. The styrene-maleic anhydride structure containing and graft-modified water-based pigment dispersant disclosed by the invention has the advantages that the steric hindrance is high, the anchoring capacity is high, a pigment can be stably dispersed in the water-based colourpaste application, the relative color strength is high, and the storage stability is higher.

Description

technical field [0001] The invention relates to a water-based pigment dispersant and a preparation method thereof, in particular to a graft-modified water-based pigment dispersant containing a styrene-maleic anhydride structure and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] The water-based color paste formed by stably dispersing pigment particles in the water-based system is an effective solution to avoid pigment dust pollution and improve the use effects of tinting strength, vividness and brightness. Dispersants are key additives to ensure that pigment particles can be stably dispersed in water-based systems, and have an important impact on the application performance of water-based colorants such as coloring power and compatibility with colored substrates. Dispersants not only need to be well anchored on the surface of pigment particles, but also need to provide strong steric hindrance and electrostatic r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/14C08F212/08C08F222/06C08F220/20C08F220/14C08F220/18C09D17/00
Inventor 杜长森卢圣国吕品汪理想
Owner SUZHOU SUNMUN TECH CO LTD
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