Synthesis And Properties Of Salt Resistant Thickener

There are often kinds of salts in reactive dye printing paste, while most syntheticthickeners in the market are not salt resistant, so they can not meet the requirements ofthe application. This paper was aimed to solve the problem, and prepared salt resistantthickener with the monomer which was not sensitive to salt solution by inverseemulsion polymerization, and applicated it in reactive dye printing sample experiment.1、Salt resistant thickener SAT was prepared by inverse emulsion polymerizationwith acrylic acid, ammonia and stearyl acrylate as main monomers, using kerosene assolvent, Span-80as emulsifier, N,N-methylene diacrylamide as cross-linking agent,potassium sulfate and ammonium persulfate as initiator, and Tween-80as phase transferagent.2、Salt resistant thickener APGT was prepared by inverse emulsion polymerizationwith acrylic acid, ammonia and anyl-polyethylene glycol as main monomers, usingkerosene as solvent, Span-80as emulsifier, N,N-methylene diacrylamide ascross-linking agent, potassium sulfate and ammonium persulfate as initiator, andTween-80as phase transfer agent.3、The structure and properties of salt resistant thickener SAT and APGT werecharacterized by FTIR, TG-DTA, Zeta potential and particle size analysis tests.4、To salt resistant thickener SAT, experiments showed that the ammoniumacrylate solution pH value was regulated around6.5, using kerosene as solvent, thedosages of stearyl acrylate and emulsifier were1.5%and8%of total monomers, so thatthe viscosity of the original paste containing1%thickener of1387.7mPa·s, and theviscosity retention rate of47.82%.5、The thickener SAT was used in reactive dye printing. The surface color yieldreached above21.265, the penetration rate reached more than67.59%, the degree ofuneven color was lower than0.173, and the rate of de-paste was more than84.27%.6、To salt resistant thickener APGT, experiments showed that the ammonium acrylate solution pH value was regulated around6.5, using kerosene as solvent, wateroil ratio of3:1, the dosages of APEG, cross-linking agent, emulsifier and phase transferagent were1.5%,0.6‰,8%and8%of total monomers, reaction temperature was65℃,the stirring speed was200r/min, so that the viscosity of the original paste containing1%thickener of1551.4mPa·s, and the viscosity retention rate of49.13%.7、The thickener APGT was used in reactive dye printing. The surface color yieldreached above21.397, the penetration rate reached more than70.35%, the degree ofuneven color was lower than0.167, and the rate of de-paste was more than86.34%.