Method for preparing cationic grafting agent with multi-reactive groups

A cationic and grafting agent technology, applied in the field of preparation of chemicals for textile modification, can solve the problems of poor dyeing effect of blended fabrics, difficulty in popularization, dyeing pollution, etc.
CN101747285AInactive Publication Date: 2010-06-23JINQIU TEXTILE ARRANGEMENT +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JINQIU TEXTILE ARRANGEMENT
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a cationic grafting agent with multi-reactive groups, which comprises the following steps: adding N,N-dimethyl diaminopropane or N,N-dimethylaminoethanol and hydrochloride solution of N,N-dimethylamino propanol into cyanuric chloride water suspension at the temperature of 0-10 DEG C, leading the molar ratio of cyanuric chloride to the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol and the N,N-dimethylamino propanol to be 1: 0.34, using base for adjusting and controlling the pH to be 3-4, increasing the temperature to 35-45 DEG C after full reaction, and further adding the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol, leading the molar ratio of the N,N-dimethyl diaminopropane or the N,N-dimethylaminoethanol to the cyanuric chloride to be 0.4:1, using hydrochloric acid for adjusting the pH to be 1-2 after full reaction, increasing the temperature to 70-85 DEG C, adding epichlorohydrin, leading the molar ratio of the epichlorohydrin to the cyanuric chloride to be 0.7:1, and obtaining a monochlorotriazine ammonium chloride derivative. The grafting agent is used for graft modification of fabric, thereby improving the dyeing effect.
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Description

technical field

[0001] The invention relates to a preparation method of chemicals for textile modification, especially a preparation method of chemicals for modification of natural fiber fabrics before dyeing. Background technique

[0002] Natural fibers and their blends are commonly dyed with reactive and direct dyes. However, the dye uptake rate and fixation rate of the dye are only about 60-80%, and the remaining 20% ​​of the dye is discharged with the dye liquor wastewater, resulting in an increase in dye consumption and cost. Moreover, a large amount of water is required for cleaning, which increases the burden of sewage discharge and treatment. Especially when dyeing, a large amount of inorganic salts (sodium chloride and sodium sulfate, 30-100 grams per liter of dyeing solution) must be added. The discharge of salty printing and dyeing wastewater has destroyed the ecological environment of the water. The high penetration of salt leads to salinization of the soil aro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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