Zhejiang Sci-tech University

Yani Chen

Dongming Qi

Lan Zhou

Jianzhong Shao

Jinqiang Liu

The invention discloses an environmentally-friendly pasty discharge agent for textile printing and a method for preparing the environmentally-friendly pasty discharge agent. The environmentally-friendly pasty discharge agent for textile printing is formed by the following raw materials according to part by weight: decamethylcyclopentasiloxane: 30-60 parts; thiourea dioxide: 40-70 parts; surfactant: 1-3 parts; and glycerol: 3-6 parts. Decamethylcyclopentasiloxane is put into a ball mill, a surfactant is added into the ball mill to make the decamethylcyclopentasiloxane dispersed or dissolved uniformly and then stirred uniformly, and then thiourea dioxide is added into the ball mill and ground together for 1-3 hours. In the invention, the special liquid compound decamethylcyclopentasiloxane does not chemically react with the thiourea dioxide; in addition, it isolates the thiourea dioxide from outside water and air, thus increasing the stability of the thiourea dioxide. The discharge effect is excellent, the defects of low dissolvability, poor dispersion uniformity in the discharge paste, poor net permeability and insufficient discharge effect of the common thiourea dioxide as the discharge agent are overcome, and there is no influence on the touch of the discharged and printed textiles.

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Zhejiang, China

Yani Chen