Binary co-polymerized positive ion formaldehyde-free color-fixing agent and synthetic method thereof

Abstract

The invention provides a binary co-polymerized positive ion formaldehyde-free color-fixing agent and a synthetic method thereof. The synthetic method includes following steps: adding a weighed monomer 1: dimethyldiallyl ammonium chloride, a weighed monomer 2: diallyl amine, and glacial acetic acid into a four-mouth reaction kettle provided with a reflux condensation tube, a temperature meter and a stirrer; weighing anhydrous sodium hydrogen sulfite and potassium persulfate to prepare an initiator of an oxidation-reduction system; increasing the temperature to about 80 DEG C and adding 1/8 of the potassium persulfate and 1/8 of the anhydrous sodium hydrogen sulfite with temperature increasing degree being controlled to be not more than 10 DEG C; when the temperature increases to about 100 DEG C, adding dropwisely the rest initiator slowly with the temperature being controlled to be not higher than 104 DEG C, wherein the dropwise addition of the rest initiator is finished within 2.5 h, and then carrying out the reaction for 30 min continuously; and decreasing the temperature and discharging the material when the temperature is lower than 50 DEG C. The color-fixing agent is free of formaldehyde, is a quaternary ammonium salt typed environmental-protective color-fixing agent, is applied in color-fixing treatment in fabric dyeing with an active dye and can enable both color fastness to washing and color fastness to rubbing to be increased by 0.5-1 grade.

Description

Technical field: [0001] The invention relates to the synthesis of a color-fixing agent in the field of dyeing, in particular to a binary copolymerized cationic formaldehyde-free color-fixing agent and a synthesis method thereof. Background technique: [0002] After my country's entry into the WTO, the processing requirements for textiles are in line with international standards, the most important of which are the restrictions on formaldehyde content on textiles and the requirements for color fastness. Foreign orders have very strict requirements on color fastness, and the wet rubbing fastness is required to be above grade 3 (at present, there are very few color fixing agents at home and abroad that can reach grade 3, especially reactive dyes for deep and dense colors), and the wet ironing fastness is 4 Grade or above, the color fastness to soap washing and white cloth is 4~5 grades, and the formaldehyde content of underwear should be lower than 30mg / kg (30×10-6). Formaldehyd...

AI Technical Summary

Problems solved by technology

However, there are still few types of color-fixing agents with better dyeing depth, higher wet rubbing fastness and high utilization rate, so the dev