Reduced deep-blue dye and preparing method thereof

Abstract

The present invention discloses a vat dark blue dye and its preparation method. Its composition comprises (by weight portion) portion of vat dark blue, 0.8-2 portions of dispersing agent and 0.8-2 portions of lignin, and also contains (wt%) 0.1%-1.0% of dust-proofing agent. Its preparation method includes the following steps: (1) stirring water, vat dark blue, dispersing agent and lignin, beating and mixing them; (2). grinding; (3) drying; and (4). adding dust-proofing agent, and mixing them uniformly obtain the invented dye which can be directly used to make pigment pad dyeing and pigmentation cheese dyeing so as to reduce energy consumption.

Description

Technical field [0001] The invention relates to a vat dye and a preparation method thereof, in particular to a dye using vat dark blue as an active ingredient and a preparation method thereof. Background technique [0002] Vat dark blue is a widely used vat dye. However, with the continuous development of printing and dyeing technology, the original vat dark blue can no longer meet the needs of relevant departments. Its particle distribution is uneven and its dispersibility is poor. Therefore, when the printing and dyeing industry uses this dye for suspension pad dyeing or suspension cheese dyeing, beating and grinding must be carried out first, which affects production efficiency and printing and dyeing quality. Summary of the invention [0003] The technical problem to be solved by the present invention is to disclose a reduced dark blue dye to overcome the defects in the prior art that the prior art must be beaten and milled, which affects production efficiency. [0004] Anot...

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is to disclose a reduced dark blue dye to

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