Preparation method of terpolymer dispersing agent and application of terpolymer dispersing agent in preparation of liquid disperse dye

Abstract

The invention discloses a preparation method of a terpolymer dispersing agent and application of the terpolymer dispersing agent in preparation of a liquid disperse dyestuff, and the method comprises the following steps: weighing three monomers of styrene, acrylic acid and methoxyl polyethylene glycol methacrylate, dissolving the monomers in isopropanol, uniformly conducting mixing, adding a formed mxiture into a reactor, and conducting stirring; introducing nitrogen into the reactor to remove oxygen in the reactor; dissolving an initiator in acetone to obtain an initiator solution, and when the temperature rises to 55-65 DEG C, dropwise adding the initiator solution through a micro-injection pump and controlling the dropwise adding time to be 0.5-4 hours; after dropwise adding the initiator, keeping the temperature at 75-85 DEG C and conducting reacting for 5-8 hours; and after the reaction is finished, conducting cooling, dropwise adding sodium hydroxide into the reaction system to adjust the pH value of the system to 7.5-8.0, conducting discharging, and carrying out post-treatment to obtain the terpolymer dispersing agent. The dispersing agent with the structure is relatively high in grinding efficiency when being used for preparing a liquid disperse dye, and the storage stability of the dye is relatively good.

Description

technical field [0001] The invention relates to the field of polymer dispersants, in particular to the preparation of styrene / acrylic acid / methoxy polyethylene glycol methacrylate terpolymer and its application in the preparation of liquid disperse dyes. Background technique [0002] Disperse dyes are a kind of dyes with simple structure and extremely low water solubility, which are mainly used for dyeing and printing of polyester fabrics. At present, disperse dyes are mainly powder. Although powder disperse dyes have the advantages of simple packaging, convenient transportation, good storage stability, strong adaptability to processing equipment, and simple operation, the content of auxiliaries in dyes is relatively high, and dyeing or printing Finally, it is necessary to wash away the residual dyes with a large amount of water, resulting in the consumption and pollution of a large amount of water resources. In addition, dust pollution will be generated during the chemical ...

AI Technical Summary

Problems solved by technology

However, there are few studies on high-efficiency polymer dispersants suitable for preparing liquid disperse dyes, and it is urgent to further develop new products.

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