Terpolymer dispersing agent, and preparation method and application thereof

A terpolymer and dispersant technology, applied in maleic anhydride and styrene copolymer dispersants and its preparation, carboxylate copolymers, and photoinitiated methacrylic acid fields, which can solve the problem of weak adsorption and re-agglomeration of solid particles Or precipitation, no problems, etc., to achieve the effect of low total activation energy, pure product and low cost

Active Publication Date: 2014-02-26
文水县是大高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of traditional small molecule dispersants are: the adsorption on the surface of solid particles is not firm, and it is easy to dissociate from the surface to cause re-aggregation or precipitation
But there is no report of light-induced synthesis of methacrylic acid and styrene copolymer dispersant

Method used

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  • Terpolymer dispersing agent, and preparation method and application thereof
  • Terpolymer dispersing agent, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Preparation of dispersant:

[0030] Methacrylic acid, maleic anhydride and styrene are 50 parts, 10 parts and 40 parts respectively; Sodium lauryl sulfate and polyethylene glycol octyl phenyl ether are surfactants with a weight ratio of 5:1. 4% of the monomer; thiourea is an anti-crosslinking agent, and the dosage is 4% of the monomer; the photoinitiator dosage is 4% of the monomer; use ethanol as a solvent to make a solution for subsequent use, and the solvent dosage is equal to the monomer mass . Take 10ml of the solution in the photoreaction tube, put nitrogen into the photoreaction tube to discharge the air, and cover it; then put the photoreaction tube into a photoreactor at 15°C and irradiate it with a UV lamp for 50 minutes; a light yellow transparent viscous polymer is formed Add triethylamine solution to neutralize 40%; remove the organic solvent to obtain aqueous dispersant, and then spray dry to obtain white powder.

[0031] Wherein the photoinitiator is...

Embodiment 2

[0050] Methacrylic acid, maleic anhydride and styrene are 60 parts, 20 parts and 20 parts respectively; Sodium lauryl sulfate and polyethylene glycol octyl phenyl ether are surfactants with a weight ratio of 4:1. It is 5% of the total amount of monomer; Thiourea is an anti-crosslinking agent, and the consumption is 9% of the monomer; The quality is equal. Take 10ml of the solution in the photoreaction tube, put nitrogen into the photoreaction tube to discharge the air, and cover it; then put the photoreaction tube into a photoreactor at 15°C and irradiate it with a UV lamp for 50 minutes; a light yellow transparent viscous polymer is formed Material dispersant, add sodium hydroxide solution to neutralize 30%. After removing the organic solvent, an aqueous solution is obtained.

[0051] Wherein, the photoinitiator is lanthanum nitrate-anthraquinone complex, and the preparation method is as follows: mix lanthanum nitrate and anthraquinone in a mass ratio of 1:2 and dissolve th...

Embodiment 3

[0055] Methacrylic acid, maleic anhydride and styrene are 40 parts, 30 parts and 30 parts respectively; Sodium lauryl sulfate and polyethylene glycol octyl phenyl ether are surfactants with a weight ratio of 3:1. 9% of the monomer; thiourea is an anti-crosslinking agent, and the dosage is 7% of the monomer; the photoinitiator dosage is 2% of the monomer; acetone is used as a solvent to prepare a solution for later use, and the amount of the solvent is equal to the mass of the monomer . Take 10ml of the solution in the photoreaction tube, pass nitrogen into the photoreaction tube to discharge the air, and cover it; then put the photoreaction tube into a photoreactor at 20°C and irradiate it with a UV lamp for 100 minutes; a light yellow transparent viscous polymer is formed Add ammonia water to neutralize 90% of the substance dispersant; get the water agent after removing the organic solvent.

[0056] Wherein, the photoinitiator is lanthanum nitrate-benzophenone complex, and t...

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Abstract

The invention relates to a copolymer dispersing agent, and discloses a terpolymer dispersing agent. Methacrylic acid, maleic anhydride and styrene are used as monomers; a surface active agent, a cross-linking preventing agent, a photo-initiator and a neutralizating reagent are added to the monomers; and the copolymer dispersing agent is prepared through using a photo-initiation method. The method has the advantages that the overall activation energy is low, polymerization can be conducted at a low temperature, the process is simple, and the product purity is high. The obtained dispersing agent achieves a good dispersion effect on inorganic powder and pesticide, can be used for preparing waterborne pesticide preparations and is widely applied to the industries of pesticide preparations. The invention has the advantages of low cost and zero pollution and is suitable for industrial mass production.

Description

technical field [0001] The invention relates to a terpolymer dispersant, specifically a carboxylate copolymer, which is a photoinitiated methacrylic acid, maleic anhydride and styrene copolymer dispersant, as well as its preparation technology and application. Background technique [0002] Dispersants have important applications in pigments, dyes, pesticides and other industries. The disadvantages of traditional small molecule dispersants are: the adsorption on the surface of solid particles is not firm, and it is easy to dissociate from the surface to cause re-aggregation or precipitation. Cationic dispersants are prone to precipitation and become ineffective when used in hard water conditions. Carboxylate copolymer dispersants can stabilize the system through steric hindrance and electrostatic repulsion, and have better dispersion effects than small molecule and cationic dispersants. [0003] Our research group has synthesized a tribasic carboxylate dispersant, which has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F212/08C08F222/08C08F2/48B01F17/52A01N25/30C09K23/52
Inventor 任天瑞彭彤南士彬邢雯
Owner 文水县是大高分子材料有限公司
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