Alkali-fast aldehyde-free colour stabilizer and method for preparing the same

An aldehyde-free color-fixing agent and alkali-resistant technology, which is applied in the field of printing and dyeing, can solve the problems affecting fabrics such as sunlight, sweat, staining and contamination, and the color-fixing agent is not alkali-resistant, and achieves excellent color-fixing effect. , strong alkali resistance and high temperature resistance, and the effect of improving the composite fastness to sweat and light

Inactive Publication Date: 2009-07-29
上海德桑精细化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing color-fixing agent is a dicyandiamide structure, which can cause serious changes in hue during the color-fixing process of medium and high-temperature dyes, and in the process of alkaline washing due to this type of color-fixing agent It is not resistant to alkali, which will cause serious dye fading and fading, resulting in staining and staining; in addition, this kind of fixing agent will affect the fastness of the fabric to sunlight and sweat after being fixed.

Method used

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Embodiment Construction

[0014] The present invention is achieved like this:

[0015] An alkali-resistant formaldehyde-free color-fixing agent, the color-fixing agent is a cationic polymer formed by polymerization of acrylamide, butyl acrylate, and epichlorohydrin. It is a light yellow-light yellow-brown liquid, and The pH of its 1% aqueous solution is 5.7-6.5.

[0016] A kind of preparation method of described alkali-resistant type formaldehyde-free fixing agent, as shown in table 1, it comprises: acrylamide 10%-35%, butyl acrylate 15%-45%, epichlorohydrin 10%- 40%, 36.5% hydrochloric acid 5%-13% and reactant total amount 0.1%-1.5% initiator, and comprise the following steps:

[0017] Add acrylamide and butyl acrylate at room temperature and raise the temperature;

[0018] Add epichlorohydrin at 60°C and maintain the temperature for 10-18 minutes, preferably 15 minutes;

[0019] Raise the temperature to 80°C to add the initiator and keep it for 30 minutes;

[0020] Raise the temperature to 120°C-...

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PUM

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Abstract

The invention relates to a color fixing agent and a preparation method thereof. An alkaline-resisting aldehyde-free color fixing agent is a cationic polymer formed by the polymerization reaction of acrylamide, butyl acrylate and epoxy chloropropane. A method for preparing the alkaline-resisting aldehyde-free color fixing agent comprises the ingredients as follows: 10%-35% of acrylamide, 15%-45% of butyl acrylate, 10%-40% of epoxy chloropropane, 5%-13% of hydrochloric acid and 0.1%-1.5% of an initiating agent; and comprises the following steps: adding acrylamide and butyl acrylate under normaltemperature and raising the temperature; adding epoxy chloropropane at 60 DEG C and maintaining the temperature for 10-18 minutes; raising the temperature to 80 DEG C to add the initiating agent and maintaining the temperature for 30 minutes; raising the temperature to the range from 120 DEG C to 130 DEG C, and persistently reacting for 3-4 hours; adding hydrochloric acid for acid cleaning, temperature reduction, neutralization and discharging to obtain the alkaline-resisting aldehyde-free color fixing agent. The invention is quite strong in resisting alkaline and high temperature, is free from color variation when treating the fabrics, and has no influence on chlorine fastness, light fastness and perspiration-light fastness.

Description

technical field [0001] The invention relates to the printing and dyeing industry, in particular to a color fixing agent and a preparation method thereof. Background technique [0002] In the fabric dyeing process, in order to maintain the firmness of the color, people use a color-fixing agent at the end of dyeing. The existing color-fixing agent is a dicyandiamide structure, which can cause serious changes in hue during the color-fixing process of medium and high-temperature dyes, and in the process of alkaline washing due to this type of color-fixing agent It is not resistant to alkali, which will cause serious dye fading and fading, resulting in staining and staining; in addition, this kind of color fixing agent will affect the fastness of the fabric to sunlight and sweat after being fixed. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects in the existing fabric dyeing, and provide an alkali-resistant form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/08D06P3/66
Inventor 信建伟顾志安
Owner 上海德桑精细化工有限公司
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