5 results about "Disperse dye" patented technology

The invention discloses a preparation method of a thiourea dioxide low-temperature reduction clearing catalyst for disperse dyes and a reduction clearing method. The thiourea dioxide low-temperature reduction clearing catalyst is obtained by complexing rare-earth chlorides and colorless nitroaromatic compounds of a relatively simple structure according to a certain molar ratio. Dacron fabrics dyedby the disperse dyes are subjected to reduction clearing through a solution prepared from thiourea dioxides, a catalyst and an alkaline agent, and the reduction clearing of the dacron fabrics dyed bythe disperse dyes is achieved under a low-temperature condition. The low-temperature reduction clearing of the dacron fabrics dyed by the disperse dyes is achieved, the reduction clearing temperatureis lowered, energy consumption is saved, the production efficiency is improved, and the dyefastness of the dacron fabrics after reduction clearing is very excellent.

The invention discloses a disperse dye compound as well as a preparation method and an application thereof. The structural formula of the disperse dye compound is shown in the formula I in the specification, wherein in the formula I, D represents disperse dye chromogen, and R represents alkyl. Azo-disperse dyes containing single aliphatic hydroxyl groups in molecular structures are selected to serve as chromogen and have a coupled reaction with a dicarbonyl dichloride compound, and the disperse dye compound is prepared; when the disperse dye compound is applied to dyeing of spandex or polylactic acid fiber, washing fastness and dry-heat-resistant firmness are remarkably improved.

The invention discloses a cotton imitation wax printing process, which comprises pretreatment, printing, drying, baking steaming, water washing, stenting, and inspection packaging, wherein the components of the printing formula comprise seaweed paste, a disperse dye, a printing penetrant, a defoamer, a thickener and synthetic printing paste according to a mass ratio of 400:0.01-0.5:0.1-0.15:0.1-1:0.5-1:100, and the printing back surface drying temperature is 30-50 DEG C higher than the printing front surface drying temperature during the drying. According to the present invention, the wax printing style with the same front surface and back surface effect is achieved by using the thermal motion of the disperse dye molecule, designing the printing formula and setting the drying temperature difference, and the cotton imitation wax printing process has characteristics of simple process, less sewage discharge, low energy consumption and high production efficiency.

The invention provides an orange to red disperse dye compound, a dye composite and a preparation method and application thereof. The structure general formula of the orange to red disperse dye compound is shown in the specification. The disperse dye compound provided by the invention has the advantages of colorful dye, good color fastness, even dyeing performance, high sublimation fastness and the like, and is especially suitable for hot melting dyeing of a medium and low temperature (185-195 DEG C). A hot melting curve is flat, outstanding physical performance of special textures can be kept, and dyeing and printing quality can be improved. The disperse dye composite containing the disperse dye compound can be prepared into dispersing dyes of different colors, has the advantages of colorfulness, high fastness and good dyeing performance, can be used for high temperature, high pressure and hot melting dyeing, can combine high sublimation fastness and excellent medium and low temperature hot melting dyeing performance, is especially suitable for polyester and spandex blending and the dyeing of terylene foreign fibers. The physical performance of the special fibers can be kept, an energy saving effect is further achieved, and the application range of the hot melting dyeing is widened.