A kind of preparation method of long-acting and stable printing thickener

Abstract

The invention discloses a preparation method of a long-acting and stable printing thickener, and belongs to the technical field of thickener preparation. Rosin reacts with tetrabutylammonium bromide and epoxy chloropropane to obtain viscous fluid, the viscous fluid is dissolved into an ethanol solution to be subjected to rotary evaporation treatment, a prepared dried product, a chitosan oligosaccharide solution and a sodium hydroxide solution are stirred for reacting, then, dialysis treatment is performed after citric acid is used for adjusting pH, then, the dialyzed reaction mixture and absolute ethyl alcohol are mixed and filtered through extraction, filter residues are frozen and dried to obtain the thickener, the thickener is stirred and mixed with methacrylic acid, maleic acid, ammonium persulphate and the like, ammonium persulphate is added for performing a heating reaction, and after cooling is performed, the long-acting and stable printing thickener can be obtained. The obtained thickener has the advantages that the consumption is small, the stability is good, the thickening effect is high, the electrolyte resistance is good, and bleeding is not likely to occur; after the thickener is adopted, no harmful effect can be generated on the hand feeling and color vividness of a fabric, and the preparation technology is simple and suitable for large-scale industrial production.

Description

technical field [0001] The invention discloses a preparation method of a long-acting and stable printing thickener, belonging to the technical field of thickener preparation. Background technique [0002] Printing thickener is the most commonly used thickener in the printing industry. In printing, two main materials, glue paste and color paste, are used. And because under high shear force, the consistency will be reduced, so a thickener is used to increase the consistency of the printing material, and a printing thickener is used at this time. [0003] The main function of the printing thickener is to provide good rheological properties, transfer the glue or color paste on the printing screen and printing roller to the fabric, combine the dye with the fiber, and ensure that the printing pattern is clearly defined. The pattern is clear, the color is bright and uniform. When the dye is fixed, the reaction products and residues are easy to remove in the downstream process, ma...

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention: the thickening effect of the current nonionic thickener is poor, the addition amount is large, and a certain amount of kerosene is still required, while the anionic thickener has poor electrolyte resistance and water holding capacity, is easy to In order to solve the problems of oozing and hard feeling, a long-term and stable printing thickener preparation method is provided. The method first reacts rosin with tetrabutylammonium bromide and epichlorohydrin to prepare a viscous liquid, which is dissolved in The ethanol solution is rotated and evaporated, and then the dried product is stirred and reacted with chitosan oligosaccharide solution and sodium hydroxide solution, and then the pH is adjusted with citric acid, followed by dialysis treatment, and then the dialyzed reaction solution is mixed with absolute ethanol and suction filtered , freeze-dry the filter residue to obtain a thickener, then stir and mix it with methacrylic acid, maleic acid, ammonium persulfate, etc., then add ammonium persulfate to heat and react, and wait for cooling to obtain a long-term stable printing thickener , the thickener prepared by the present invention has the advantages of less dosage, good stability, strong thickening effect, good electrolyte resistance and not easy to bleed, and will not have adverse effects on the feel and color brightness of fabrics after use , and the preparation process is simple, suitable for large-scale industrial production