Polyether amine for textile printing and dyeing auxiliary and preparation method for polyether amine

Abstract

The invention discloses polyether amine for a textile printing and dyeing auxiliary and a preparation method. The preparation method includes: adding trimethylolpropane serving as initiator and catalyst KOH (potassium hydroxide) into a reaction kettle, and sequentially feeding epoxyethane and epoxypropane into the reaction kettle so that a polyether crude product is prepared by means of reaction; neutralizing and adsorbing the reactant prior to filtering dehydration, and then refining through reduced pressure distillation and dehydration so that polyether is prepared; and adding the prepared polyether, supported catalyst, liquid ammonia and hydrogen so that the polyether amine for the textile printing and dyeing auxiliary is prepared. The polyether amine serves as a textile printing and dyeing softener, demulsification temperature of emulsion is high, polyether consumption is less, and total production cost can be reduced. The polyether amine prepared by the preparation method is high in amino terminating ratio, equimolar consumption of a main system is reduced, system viscosity is increased, and produced textiles are integrally softer in hand feeling. Besides, the preparation method is less in reaction by-products, loose in reaction condition, low in equipment requirements and small in equipment investment.

Description

[0001] technical field [0002] The invention relates to a polymer organic amine compound, in particular to polyether amine as the main component used in the preparation of textile printing and dyeing auxiliary softener and its preparation method. Background technique [0003] Polyetheramine is a compound that converts the hydroxyl value at the end of polyether polyols into amino groups. It is widely used as a raw material for epoxy resin curing agents, spray polyurea and hydrogel products. In the applicant's search, there is no report of polyetheramine used as textile printing and dyeing auxiliary softener. [0004] There are two types of methods for preparing polyetheramines: leaving group method and catalytic amination method. Among them, the leaving group method has many synthesis steps, many reaction by-products, and relatively difficult separation. Therefore, generally domestic and foreign industrial production Both are based on catalytic amination method. However, th...

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Problems solved by technology

[0005] In view of the above problems, the problem to be solved by the present invention is to provide a kind of polyether amine suitable as textile printing and dyeing auxiliary softener, to overcome the easy bleaching of existing softener Oil, poor thermal stability of the system, weak electrolyte resistance and other problems, and can reduce the amount of polyether and reduce the total production cost

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