A kind of preparation method of salt-resistant thickener

A thickener and salt-resistant technology, applied in the field of textile printing, can solve the problems of difficult mixing, copolymerization, poor water solubility, affecting the effect of hydrophobic modification, etc., and achieve the effect of improving thickening performance and salt-resistant performance.

Active Publication Date: 2021-03-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, monomers containing long hydrophobic chains are poor in water solubility. In inverse emulsion polymerization, the neutralized acrylic monomers are mainly dissolved in the water phase, while monomers containing long hydrophobic chains are mainly dissolved in the oil phase. Phase, the two are difficult to fully mix and copolymerize, so the effect of hydrophobic modification is affected

Method used

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  • A kind of preparation method of salt-resistant thickener

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix ammonia water and acrylic acid monomer to a pH value of 6.5, add crosslinking agent polyethylene glycol (400) diacrylate, the amount of crosslinking agent accounts for 0.5% of the mass of acrylic acid monomer, stir evenly to obtain a water phase; , 2-acrylamido sodium dodecyl sulfonate and 5# white oil are made into oil phase, the consumption of span80 accounts for 2% of acrylic acid monomer quality, the consumption of 2-acrylamido sodium dodecyl sulfonate accounts for 5% of the mass of the acrylic acid monomer, the ratio of 5# white oil to the mass of the acrylic acid monomer is 0.5:1; slowly add the water phase to the oil phase under stirring conditions, emulsify at 1000 rpm for 90 minutes, then add the initiator dropwise aqueous solution, the initiator aqueous solution is a mixed solution of ammonium persulfate and sodium bisulfite, wherein the mass ratio of ammonium persulfate to sodium bisulfite is 4:1, and the total mass of the initiator accounts for 1.2% of th...

Embodiment 2

[0026] Mix ammonia water and methacrylic acid monomer to a pH value of 7, add a crosslinking agent polyethylene glycol (600) diacrylate, the amount of the crosslinking agent accounts for 1.0% of the mass of the methacrylic acid monomer, stir evenly, and obtain an aqueous phase thing; span80, sodium 2-acrylamido octaalkylsulfonate and aviation kerosene are formulated into an oil phase, and the consumption of span80 accounts for 5% of the mass of methacrylic acid monomer; The dosage accounts for 15% of the mass of methacrylic acid monomer, and the mass ratio of aviation kerosene to methacrylic acid monomer is 0.6:1; the water phase is slowly added to the oil phase under stirring conditions, and after emulsification at 1500 rpm for 60 minutes, Initiator aqueous solution is added dropwise, and initiator aqueous solution is the mixed solution of ammonium persulfate and sodium bisulfite, wherein, the mass ratio of ammonium persulfate and sodium bisulfite is 6:1, and total mass of ini...

Embodiment 3

[0028] Mix ammonia water and itaconic acid monomer to a pH value of 6.8, add a cross-linking agent polyethylene glycol (400) diacrylate, the amount of the cross-linking agent accounts for 0.8% of the mass of itaconic acid monomer, stir evenly, and obtain an aqueous phase thing; span80, sodium 2-acrylamido octane sulfonate and aviation kerosene are formulated into an oil phase, and the consumption of span80 accounts for 3% of the itaconic acid monomer quality; The dosage accounts for 10% of the mass of itaconic acid monomer, and the mass ratio of aviation kerosene to itaconic acid monomer is 0.55:1; the water phase is slowly added to the oil phase under stirring conditions, and after 75 minutes of high-speed emulsification at 1200 rpm, Add dropwise initiator aqueous solution, initiator aqueous solution is the mixed solution of ammonium persulfate and sodium bisulfite, wherein, the mass ratio of ammonium persulfate and sodium bisulfite is 5:1, and initiator total mass accounts fo...

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Abstract

The invention relates to a preparation method for a salt-tolerant thickening agent. The method comprises the following steps: polyethyleneglycol diacrylate having certain hydrophilicity is used as a crosslinking agent, a functional monomer having a hydrophobic long chain and a water-soluble group is selected, the selected functional monomer and an acrylic monomer are subjected to copolymerization,and therefore the salt-tolerant thickening agent is prepared. According to the method provided by the invention, the thickening agent obtained by the method has excellent thickening performance and electrolyte resistance.

Description

technical field [0001] The invention belongs to the field of textile printing, and in particular relates to a preparation method of a salt-resistant thickener. Background technique [0002] In the process of textile printing, in order to prevent the bleeding of patterns, dyes and medicines must have a certain viscosity. Thickeners are the main components to increase the viscosity of dyes and medicine solutions, and their performance directly affects the color fastness, feel and color yield of printed products. amount etc. Polyacrylic acid synthetic thickener has the characteristics of low solid content, strong water holding capacity, strong paste-forming ability, good washability, and good storage stability. It has been widely used in the field of textile printing, but polyacrylic acid thickener The problem of poor electrolyte resistance is common, and in most cases some electrolytes are inevitably used in textile printing pastes, which limits the use of polyacrylic acid th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F222/20C08F283/06C08F222/02D06P1/52
CPCC08F220/06C08F222/02C08F283/065D06P1/525D06P1/5257C08F222/102
Inventor 彭勇刚汪媛陶永新纪俊玲万怀新
Owner CHANGZHOU UNIV
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