Efficient deep dyeing promoter, and preparation and after treatment application methods thereof

Abstract

The invention discloses an efficient deep dyeing promoter, and preparation and after treatment application methods thereof. The efficient deep dyeing promoter comprises 14-40 percent of DHMP, 0.5-6 percent of a cross-linking agent, 0.05-2 percent of a cationic emulsifier, 0.05-2 percent of a non-ionic emulsifier, 0.0015-0.4 percent of a water-soluble azo initiator, 0.005 to 0.5 percent of glacial acetic acid and 60 to 85 percent of deionized water. The efficient deep dyeing promoter provided by the invention is prepared by adopting a cationic polymerization method, and the preparation method comprises pre-emulsified liquid preparation, primer preparation and pre-emulsion dripping method polymerization reaction. The efficient deep dyeing promoter is applied through a two-step treatment application process with silicone emulsion. After the adoption of the efficient deep dyeing promoter, and the application method thereof, the deepening rate can greatly exceed the deepening rate in the prior art and can reach 80 percent and above, the colour difference is small, the hand feeling is improved, and influences on dry and wet rubbing fastness and soaping fastness of the fabric are small.

Description

technical field [0001] The invention belongs to the field of textile dyeing and finishing auxiliaries, and in particular relates to a high-efficiency darkening agent and its preparation and finishing application method. Background technique [0002] Polyester is the world's largest and most widely used synthetic fiber variety. Due to the constraints of fiber dyeing balance and color fastness, plus polyester has a high refractive index and smooth surface, its dye depth is relatively poor. When dyeing polyester fiber, it is necessary to add more dyes to achieve the required surface color depth. Even if the amount of dyes is increased in actual production, sometimes it cannot meet customer requirements. For example, it is difficult to achieve the black color required by the Arab region. It is especially difficult for fine denier / ultra fine denier polyester with high surface light reflectance to dye dark colors. In addition, due to the increasing pressure of environmental prote...

AI Technical Summary

Problems solved by technology

[0008] Pu Zongyao of Sichuan Institute of Textile Sciences and others found that anionic / cationic silicone emulsions are used to treat dyed fabrics together, that is, dyed fine-denier polyester fabrics are first impregnated with anionic or cationic silicone emulsions, and then impregnated with cationic or anionic silicone emulsions. Will greatly increase the apparent depth of dyed fine-denier polyester fabrics, but does not specify the specific deepening rate

[0018] The deepening agents reported above all have a key deficiency, that is, the deepening rate is not high: most of them are 20~30%, not more than 50%, and the application effect is not obvious enough.