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Synthesis method for cationic waterborne polyurethane acid dye fixing agent

A water-based polyurethane and acid dye technology, applied in dyeing, textile and papermaking, etc., can solve the problems of high cost of fixing agent and poor fabric fixing effect, and achieve good fixing effect, excellent color fixing effect, and high technology. short time effect

Inactive Publication Date: 2016-05-11
SUZHOU INSILK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Wen Zitian of Zhejiang Sci-tech University published an article entitled "Research on the Development and Application of Polycationic Color Fixing Agent" in 2012, using epichlorohydrin and N-methyldiallylamine as raw materials to synthesize 3-chloro-2 -Hydroxypropylmethyl diallyl ammonium chloride, which is copolymerized with dimethyl diallyl ammonium chloride free radicals to form a color-fixing agent, which is applied to the color-fixing process of cotton fabrics dyed with reactive dyes. The present invention is the closest to the prior art, and the cost of the color-fixing agent obtained by the method is relatively high, and the color-fixing effect for fabrics dyed with acid dyes is not good at the same time

Method used

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  • Synthesis method for cationic waterborne polyurethane acid dye fixing agent
  • Synthesis method for cationic waterborne polyurethane acid dye fixing agent
  • Synthesis method for cationic waterborne polyurethane acid dye fixing agent

Examples

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Embodiment 1

[0034] A kind of synthetic method of cationic water-based polyurethane acid dye fixing agent, take polyethylene glycol, polypropylene glycol, dimethyl diallyl ammonium chloride, N-methyldiethanolamine and sodium chloride, zinc sulfate as raw material , manganese chloride is a catalyst polymerization reaction, comprising the following steps:

[0035] Step 1: Mix polyethylene glycol and polypropylene glycol evenly in a molar ratio of 1:2, dehydrate in vacuum at 100°C for 2 hours, and then cool down to room temperature;

[0036] Polypropylene glycol is premium grade PPG-1000, the hydroxyl value of PPG-1000 is 102-125mgKON / g, and the molecular weight is 900-1100;

[0037] The second step: add dimethyl diallyl ammonium chloride, N-methyldiethanolamine and manganese chloride (addition amount is 1% of polyethylene glycol mass), stir and react at 50°C for 2h,

[0038]Wherein the addition amounts of dimethyl diallyl ammonium chloride and N-methyldiethanolamine are respectively 0.5 tim...

Embodiment 2

[0042] A kind of synthetic method of cationic water-based polyurethane acid dye fixing agent comprises the following steps:

[0043] Step 1: Mix polyethylene glycol and polypropylene glycol evenly at a molar ratio of 1:2.5, dehydrate in vacuum at 120°C for 2 hours, and then cool down to room temperature; the polypropylene glycol is premium grade PPG-1000; the hydroxyl value of PPG-1000 is 102- 125mgKON / g, molecular weight 900-1100;

[0044] The second step: add dimethyl diallyl ammonium chloride, N-methyldiethanolamine and manganese chloride (the addition amount is 1.5% of the mass of polyethylene glycol), stir and react at 60°C for 3h,

[0045] Wherein the addition amounts of dimethyl diallyl ammonium chloride and N-methyldiethanolamine are respectively 0.7 times and 1.5 times of polyethylene glycol weight;

[0046] The third step: raise the temperature to 80°C, slowly add the mixed aqueous solution of sodium chloride and zinc sulfate dropwise, finish the drop within 2 hours...

Embodiment 3

[0049] A kind of synthetic method of cationic water-based polyurethane acid dye fixing agent comprises the following steps:

[0050] Step 1: Mix polyethylene glycol and polypropylene glycol evenly in a molar ratio of 1:2, dehydrate in vacuum at 100°C for 2 hours, and then cool down to room temperature; the polypropylene glycol is premium grade PPG-1500, and the hydroxyl value of PPG-1500 is 68- 83mgKON / g, molecular weight 1350-1650;

[0051] Step 2: Add dimethyl diallyl ammonium chloride, N-methyldiethanolamine and manganese chloride (the amount added is 1% of the mass of polyethylene glycol), and stir and react at a temperature of 55° C. for 2 h;

[0052] Wherein the addition amounts of dimethyl diallyl ammonium chloride and N-methyldiethanolamine are respectively 0.5 times and 1.2 times of polyethylene glycol weight;

[0053] The third step: raise the temperature to 75°C, slowly add the mixed aqueous solution of sodium chloride and zinc sulfate dropwise, finish the drop wit...

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Abstract

The invention discloses a synthesis method for a cationic waterborne polyurethane acid dye fixing agent, and belongs to the technical field of textile chemicals. The cationic waterborne polyurethane acid dye fixing agent is obtained by polymerization by taking polyethylene glycol, polypropylene glycol, dimethyl diallyl ammonium chloride, N-methyldiethanolamine, sodium chloride and zinc sulfate as raw materials and manganese chloride as a catalyst. The synthesis method disclosed by the invention is simple, low in temperature and short in time, and is beneficial to industrial production and popularization; meanwhile, the fixing agent has an ideal fixing effect in fixing treatment on cotton fabric, real silk fabric and wool fabric after being dyed by acid dye, meanwhile, is capable of improving wear resistance and soil resistance of fabric, has less influence on brightness of dyed fabric, and has relatively high economic benefit and industrial popularization value.

Description

Technical field: [0001] The invention discloses a method for synthesizing a cationic water-based polyurethane acid dye fixing agent, which belongs to the technical field of textile chemicals. Background technique: [0002] When the polycationic color fixing agent is applied to the color fixing of dyed fabrics, it will not affect the light color and light fastness of the dyed fabrics, and the color fixing effect on the fabrics dyed with reactive dyes is more obvious. Among the quaternary ammonium salt color-fixing agents, there are mainly color-fixing agents of epichlorohydrin and amine reactants, and color-fixing agents of dimethyl diallyl ammonium chloride. Although the former will not change the shade and light fastness of dyed fabrics, it will reduce the perspiration fastness and washing fastness of dyed fabrics to a certain extent. Compared with this, the latter has no effect on the washing fastness of dyed fabrics It is obviously higher than the former, and it will not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/10D06P5/08D06P5/06D06P1/39D06P3/60D06P3/06D06P3/16
CPCD06P5/10D06P1/39D06P3/001D06P3/06D06P3/16D06P3/6008D06P5/06D06P5/08
Inventor 周继东
Owner SUZHOU INSILK CO LTD
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