Liquid mixed base for activated dye high temperature dyeing and preparation method and application thereof

Abstract

The invention discloses liquid mixed base for activated dye high temperature dyeing and a preparation method and application thereof. The liquid mixed base uses organic quaternary ammonium alkali-tetraethylammonium hydroxide as main base supply ingredients and strong alkali and weak acid salt - bicarbonate as main buffer ingredients, is evenly mixed according to certain proportion and can be obtained by mixing with chelating agents and dispersing agents. The liquid mixed base is used for high temperature dyeing in activated dyes, can supply sufficient alkalinity to achieve bonding reaction between activated dye and fiber, has good buffer capacity, importantly can enable potential of hydrogen (pH) of dye bath to continuously and quickly reduce along with dyeing temperature rise after temperature exceeds 110 DEG C, and enable color yield of dyeing of activated dye at the high temperature of 130 DEG C to be close to the color yield on the general dyeing condition of 70 DEG C to 80 DEG C and below pH 11. Thus, the technical problems that the activated dye is not resistant to high temperature, low in fixation rate and waste are solved, and high temperature of activated dye can be achieved smoothly.

Description

Technical field: [0001] The invention relates to a liquid mixed alkali used for high-temperature dyeing of reactive dyes and its preparation method and application, in particular to a preparation process of liquid mixed alkali used for high-temperature (130°C) dyeing of reactive dyes. Background technique: [0002] For the dyeing of reactive dyes, soda ash, trisodium phosphate, sodium hydroxide, etc., or their mixtures are usually used as color-fixing alkali agents. There are also many so-called substitute bases, using strong bases of different components and proportions (such as sodium hydroxide, potassium hydroxide, sodium silicate, potassium silicate and sodium phosphate, etc.), and strong bases and weak salts (such as sodium carbonate, Potassium carbonate, sodium dihydrogen phosphate, disodium hydrogen phosphate, etc.) are used as alkali supply component and buffer component respectively, supplemented with stabilizer and chelating agent, and formulated as alkali agent wi...

AI Technical Summary

Problems solved by technology

[0007] 2. Secondly, the reactive dyes containing diamine structural bridging groups and imine linking groups are easy to break under high temperature and alkaline conditions, resulting in dye degradation, which is also a major cause of dye loss;

The fabric dyed by this process can meet the dyeing requirements in terms of level dyeing and dyeing fastness, but when it is used for high-temperature dyeing of ordinary high-temperature reactive dyes, such as bis-chloro-s-triazine reactive dyes, it cannot overcome the high temperature of dyes. The disadvantage of low color yield under alkaline conditions, so it cannot be really used in actual production

[0011] Therefore, how to design an alkali agent that can meet the above requirements, that is, solve the technical problems of reactive dyes that are not resistant to high temperature and low color fixation rate

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