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V-type polydimethyl siloxane hydrophobic association emulsion polymerization printing thickener and preparation method and application thereof

The technology of polydimethylsiloxane and dimethylsiloxane polyoxyethylene ether is applied in the field of V-type polydimethylsiloxane hydrophobic association emulsion polymerization printing thickener, which can solve the problem of electrolyte resistance. Poor, environmentally unfriendly, poor elution properties, etc., to achieve the effect of good electrolyte resistance, wide application range and good thickening ability

Active Publication Date: 2019-12-20
SICHUAN YIXIN TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a V-type polydimethylsiloxane hydrophobic association emulsion polymerization printing thickener, preparation method and application, the printing thickener adopts V-shaped polydimethylsiloxane Siloxane polyoxyethylene ether monoacrylate is a hydrophobic association functional monomer, and the prepared emulsion polymerization thickener does not contain organic solvents, and has good thickening ability, strong anti-penetration ability, good electrolyte resistance ability, depaste It can be used for the thickening of dye printing color paste, pigment printing color paste and inorganic pigment color paste. It has a wide range of applications and solves the problem of high cost of hydrophobic association functional monomers used in the preparation of existing emulsion polymerization thickeners. The problem of restricting the application and popularization of emulsion polymerization thickeners overcomes the shortcomings of existing dyes and pigment printing thickeners, such as organic solvents, poor electrolyte resistance, poor elution, and unfriendly environment, and also overcomes the shortcomings of existing emulsions. The problem of high cost caused by the use of expensive special functional monomers monopolized by American Rhodia Corporation in the preparation of polymeric thickeners

Method used

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  • V-type polydimethyl siloxane hydrophobic association emulsion polymerization printing thickener and preparation method and application thereof
  • V-type polydimethyl siloxane hydrophobic association emulsion polymerization printing thickener and preparation method and application thereof
  • V-type polydimethyl siloxane hydrophobic association emulsion polymerization printing thickener and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Pre-emulsion preparation: 1% of m=2, n=2, a=21, R 1 = H, R 2 =H's V-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate, 9.8% methacrylic acid, 17.64% methyl methacrylate, 17.64% butyl methacrylate, 17.64% ethyl acrylate, 17.64% Add butyl acrylate, 17.64% isooctyl acrylate, 1% AEO-9 and deionized water into a three-necked flask, raise the temperature to 60°C, and emulsify for 32 minutes to obtain a pre-emulsion;

[0037] (2) prepare initiator aqueous solution: initiator is added water to make initiator aqueous solution, and described initiator is potassium persulfate;

[0038] (3) Synthesis: Add 1 / 3 of the mixed emulsion in (1) into another three-necked flask, and heat up to 60°C; under nitrogen protection, add 1 / 3 of the aqueous initiator solution to initiate polymerization, and drop the remaining 2 / 3 Mix emulsion and initiator aqueous solution, add drop time for 2 hours, continue to react at 65°C for 4 hours after dropwise addition; after reaction, c...

Embodiment 2

[0041] (1) Pre-emulsion preparation: 5% of m=2, n=20, a=21, R 1 = H, R 2 = Me's V-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate, 26.91% acrylic acid, 10.47% methyl methacrylate, 14.65% butyl methacrylate, 25.11% ethyl acrylate, 12.56% butyl acrylate Add ester, 3% acrylamide, 0.3% N,N-methylenebisacrylamide, 1% K12, 1% AES and deionized water into a three-necked flask, raise the temperature to 65°C, and emulsify for 31 minutes to obtain a pre-emulsion;

[0042] (2) prepare initiator aqueous solution: initiator is added water to make initiator aqueous solution, and described initiator is ammonium persulfate;

[0043] (3) Synthesis: Add 1 / 3 of the mixed emulsion in (1) into another three-necked flask, and heat up to 65°C; under nitrogen protection, add 1 / 3 of the aqueous initiator solution to initiate polymerization, and drop the remaining 2 / 3 Mix emulsion and initiator aqueous solution, add drop time for 2.5h, continue to react at 70°C for 3h after dropwise a...

Embodiment 3

[0045] (1) Pre-emulsion preparation: 10% of m=2, n=20, a=53, R 1 = Me,R 2 = Me's V-shaped polydimethylsiloxane polyoxyethylene ether monoacrylate, 21.18% methacrylic acid, 21.17% acrylic acid, 8.47% butyl methacrylate, 25.41% ethyl acrylate, 8.47% butyl acrylate, Add 2% acrylamide, 0.1% diallyl phthalate, 0.2% N,N-methylenebisacrylamide, 3% K12 and deionized water into a three-necked flask, raise the temperature to 70°C, and emulsify for 30 minutes to obtain pre-emulsion;

[0046] (2) prepare initiator aqueous solution: add water to initiator and make initiator aqueous solution, described initiator is sodium bisulfite and potassium persulfate composition;

[0047] (3) Synthesis: Add 1 / 3 of the mixed emulsion in (1) into another three-necked flask, and heat up to 70°C; under nitrogen protection, add 1 / 3 of the aqueous initiator solution to initiate polymerization, and drop the remaining 2 / 3 Mix emulsion and initiator aqueous solution, add dropwise for 2.5 hours, continue re...

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Abstract

The invention discloses a V-type polydimethyl siloxane hydrophobic association emulsion polymerization printing thickener and a preparation method and application thereof. According to the V-type polydimethyl siloxane hydrophobic association emulsion polymerization printing thickener, V-type polydimethyl siloxane polyethenoxy ether mono-acrylate, an acrylic monomer, an acrylic ester monomer, acrylic amide and a cross-linking monomer are used as reaction raw materials, an anionic / nonionic emulsifier is used as a composite emulsification system, and the V-type polydimethyl siloxane hydrophobic association emulsion polymerization printing thickener is prepared under the action of an initiator through free radical emulsion polymerization. The emulsion type printing thickener has the advantagesof not containing an organic solvent, having good thickening performance, high bleeding-resistant capacity, good electrolyte resistance capacity and easy paste removing, having a wide thickening range and the like, can be used for thickening dye printing paste and coating printing paste, can further be used for thickening inorganic pigment paste, and is an environment-friendly and novel syntheticprinting thickener.

Description

technical field [0001] The invention relates to the field of printing and dyeing auxiliaries, in particular to a V-type polydimethylsiloxane hydrophobic association emulsion polymerization printing thickener, a preparation method and an application. Background technique [0002] Thickener is a polymer additive that can rapidly increase the viscosity of the application system and improve its rheology. It has a wide range of applications in the fields of textiles, coatings, leather and food. Most of the traditional thickeners use acrylic acid and acrylate as polymerized monomers, and use aviation kerosene, mineral spirits or other organic solvents as the reaction medium, and are prepared by inverse emulsion polymerization. Its structure is: [0003] This kind of thickener has the advantages of simple process, low cost and excellent thickening performance. However, due to the use of organic solvents as reaction media in the synthesis process, the thickener products will conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/56C08F220/06C08F220/14C08F220/18C08F222/38C08F218/18D06P1/52D06P1/38D06P1/16
CPCC08F283/124D06P1/16D06P1/38D06P1/525C08F220/56C08F220/06C08F220/14C08F222/385C08F218/18
Inventor 樊武厚黄玉华韩丽娟吴晋川田睿蒲实
Owner SICHUAN YIXIN TECH
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