Preparing method of efficient fluoride-free water proofing agent with telechelic polymer

Abstract

The invention discloses a preparing method of an efficient fluoride-free water proofing agent with a telechelic polymer. The preparing method includes the following steps of firstly, evenly mixing andemulsifying 25-35% of a fluorine-free polymer, 1.5-6% of a surfactant, 1.5-9% of an aid and water to obtain a pre-emulsion, wherein the pre-emulsion does not contain an initiator, a water-soluble monomer or substances with the boiling point lower than the emulsifying temperature; secondly, adding the water-soluble monomer to the pre-emulsion obtained in the first step to be evenly mixed, adding the initiator for reaction, adding the substances with the boiling point lower than the emulsifying temperature at a time or step by step, lowering the system temperature to the room temperature afterthe reaction ends, and conducting filtering to obtain the target product. The efficient water and oil proofing agent has a good water and oil proofing effect. The fluoride-free water proofing agent prepared through the method has a good water proofing effect, does not contain fluoride and is environmentally friendly, and has a better water proofing effect and is good in handfeel and higher in laundering durability compared with the prior art.

Description

technical field [0001] The invention relates to the field of textile auxiliaries, in particular to a preparation method of a fluorine-free waterproofing agent containing a telechelic polymer. Background technique [0002] Water repellants can impart hydrophobic properties to the surface of textiles. Fluorine-containing waterproofing agents are currently the most used on the market. Fluorine-containing water repellents are expensive, and the fluorine-containing raw materials used in the production consume high energy consumption and heavy pollution, and the fluorine-containing substances contained in them are difficult to degrade and have bioaccumulation toxicity. The use of fluorine-free additives is a development trend. [0003] In recent years, with the improvement of living standards and the upgrading of the country's industries, the textile printing and dyeing industry has an increasing demand for high-grade fluorine-free waterproofing agents. However, the disadvantag...

AI Technical Summary

Problems solved by technology

The functional monomer forms a short side chain with a reactive group on the main chain of the waterproofing agent, and the reaction of the reactive group forms a strong constraint on the main chain, forming a hard hand feeling; Resistance, many reactive groups are self-crosslinked, do not form a strong bond with the fabric, and the durability improvement is not obvious

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