A kind of alkali resistant reactive dye

Abstract

The invention provides alkali-resisting activated dye and belongs to the technical field of fine chemical engineering. The alkali-resisting activated dye is prepared from, by weight, 60-90 parts of dye, 30-50 parts of an alkali-resisting conditioning agent and 10-20 parts of a water repellent agent. In order to solve the problem that dye has many hydrophilic groups, thereby being poor in water resistance and not resistant to water washing, the alkali-resisting activated dye is applied to the commercial production process of dye, the alkali-resisting conditioning agent and the water repellent agent with the certain proportion are added in a commercial dye formula, the molecule groups of the activated dye are wrapped through the water repellent agent, and the hydrophilic groups of the activated dye are obstructed. General mixing equipment is used for directly preparing the alkali-resisting activated dye, and the alkali-resisting activated dye has the advantages of being convenient to apply, good in alkali-resisting stability and the like.

Description

technical field [0001] The invention is an alkali-resistant reactive dye, which belongs to the technical field of fine chemicals. Background technique [0002] Reactive dyes are currently widely used in cellulose fiber dyeing and printing. At present, the continuous dyeing mainly adopts the dyeing process of padding dye solution → drying → padding lye → steaming. Due to the high energy consumption, high water consumption and large waste water discharge of this process, people have paid more and more attention to the cold pad batch and wet short steam dyeing process of reactive dyes in recent years. Cold pad-batch and wet short-steaming dyeing requires the preparation of dyes and alkalis into alkaline aqueous solutions, which are then applied to fabrics by padding, and the dyes complete the color-fixing reaction by stacking or direct steaming. Because ordinary reactive dyes are not resistant to alkali, when the dye and alkali agent exist in the aqueous solution at the same t...

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Problems solved by technology

[0005] In view of the above-mentioned problems, in order to overcome the problem that the dye has many hydrophilic groups, making it less water-resistant and not resistant to water washing, an alkali-resistant reactive dye of the present invention is used in the commercial production process of the dye, and is used in the commercial dye formula Add a certain proportion of alkali-resistance modifier and hydrophobic agent, wrap the reactive dye molecular group through the hydrophobic agent, and block the hydrophilic group of reactive dye

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