Quaternized modified amino silicone oil softener and preparation and application thereof

Abstract

The invention relates to a quaternized modified amino silicone oil softener and preparation and application thereof. The softener comprises the following general formula in the specification. The preparation comprises the following steps of: (1) adding octamethylcy-clotetrasiloxane into a container, adding a coupling agent N-beta-(aminoethyl)-gamma-aminopropyl methyl dimethoxysilane into the container dropwise, adding a tetramethyl ammonium hydroxide catalyst and subsequently a capping agent hexamethyl disiloxane into the container, and then performing reduced pressure distillation to obtain amino silicon oil; (2) dissolving the amino silicon oil into a solvent, adding the mixture into epichlorohydrin, stirring and heating to react under the protection of nitrogen, and removing the solvent by steaming to obtain an intermediate product; and (3) uniformly mixing N,N-dimethyl-decanamide and the solvent to obtain a mixture, stirring with heating, adding the intermediate product dropwise into the mixture under the protection of nitrogen, performing a thermostatic reaction, and removing the solvent by steaming to obtain the product. The softener of the invention has high hydrophilicity and high stability; fabric processed by the softener has excellent soft handfeel, high hydrophilicity, low yellowing, antibacterial property and the like; and the softener is simple to prepare and is suitable for industrial production.

Description

technical field The invention belongs to the field of amino silicone oil softener, its preparation and application, in particular to a quaternized modified amino silicone oil softener, its preparation and application. Background technique Softener is an essential finishing auxiliary in the textile printing and dyeing industry. After the fabric is pre-treated and a series of dyeing and finishing processes, its original soft feel will often be reduced. For example, after the cotton fabric is scoured, bleached and mercerized, the hand feel will be rougher than before treatment due to the removal of natural oil and wax. Cotton and viscose fiber treated with resin, thermal setting of synthetic fiber, steam expansion of acrylic fiber, paint printing and dyeing, and shrink-proof process of wool will all produce rough hand feeling, and the application of softener treatment can restore soft hand feel. Organopolysiloxanes are widely used as softeners in various processes such as wea...

AI Technical Summary

Problems solved by technology

After testing the effects of various amino silicone oils on the finished fabrics, it was found that the commonly used amino silicone oils, namely the traditional diamine amino silicone oils with both primary and secondary amino groups, have good softness but whiteness, water absorption and easy decontamination. bad sex

Natural fibers after softening and finishing lose their hydrophilicity, which affects the wearing effect; and it is difficult to peel off from the fabric, which affects the over-dyeing and color repair of the fabric; in addition, it also exists under high temperature, alkali agent, high shear force and other process conditions. Easy to demulsify, causing fabrics to produce "oil spots" and sticking to rollers and cylinders

The above shortcomings seriously limit the application of amino silicone oil in high-grade fabrics. In order to maintain the excellent softness and resilience of amino silicone softeners and solve the yellowing phenomenon of fabrics, it is necessary to develop low-yellowing amino-modified silicone softeners. agent

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