Low-conductivity and high-temperature direct injection disperse dye ink and preparation method thereof

Abstract

The invention discloses low-conductivity and high-temperature direct injection disperse dye ink and a preparation method thereof. The low-conductivity and high-temperature direct injection disperse dye ink is prepared from the following raw materials in parts by mass: 10 to 40 parts of high-temperature disperse dye, 10 to 40 parts of dispersing agent, 10 to 50 parts of organic solvent, 10 to 60 parts of water, 0.05 to 0.5 part of preservative and 0.01 to 0.05 part of defoaming agent, wherein the dispersing agent is a compound product of a special dispersing agent and a nonionic dispersant, andthe weight ratio of the special dispersing agent to the nonionic dispersant is (60 to 95) to (5 to 40). The preparation method comprises the following steps: mixing the high-temperature disperse dye,the dispersing agent, the water, the preservative and the defoaming agent to form a mixture; sanding and dispersing; carrying out nanofiltration on a sanded mixture; adding the organic solvent into obtained color paste, thus obtaining the high-temperature direct injection disperse dye ink. The low-conductivity and high-temperature direct injection disperse dye ink disclosed by the invention has the characteristics of high saturation, bright color and less salt precipitation; the conductivity is low and the service life of a spray head is prolonged; the ink has good dispersion stability and long storage time.

Description

Technical field [0001] The invention relates to a low-conductivity high-temperature direct-spray disperse dye ink and a preparation method thereof. The low-conductivity high-temperature direct-spray disperse dye ink is mainly applied to digital printing. Background technique [0002] Disperse inks for textiles currently on the market are divided into imported inks and domestic inks. Domestic and most imported dispersing inks use organic sulfonate sodium salt (such as dispersant MF, NNO, 85a) as dispersant, as the dispersing system of dispersing ink, the biggest disadvantage of this system is the high salt content and the production of dispersion The ink product has high electrical conductivity and high salt content not only affects the stability of the system, and makes the ink easy to salt out, but also has a great impact on the color of the product, reflecting the dirty color, dark color light, and insufficient saturation. [0003] At present, only the dispersive ink produced by...

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Problems solved by technology

[0011] The invention provides a low-conductivity high-temperature direct-injection disperse dye ink and a preparation method thereof, which solves the problems of high conductivity, easy salting-out, and insufficient saturation of most dispersed direct-injection inks currently on the market.

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