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Waterborne polyurethane graft-modified polyamine color fixing agent and preparation method thereof

A water-based polyurethane, graft-modified technology, applied in dyeing, textile and papermaking, etc., can solve the problems of poor color-fixing effect of color-fixing agents and environmental pollution, and improve the color fastness to washing and wet rubbing. , Improve the color fastness to soaping, improve the color fastness to wet rubbing

Inactive Publication Date: 2011-11-23
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a water-based polyurethane graft modified polyamine color-fixing agent, which solves the problem that the existing color-fixing agent has poor color-fixing effect and contains formaldehyde and pollutes the environment

Method used

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  • Waterborne polyurethane graft-modified polyamine color fixing agent and preparation method thereof
  • Waterborne polyurethane graft-modified polyamine color fixing agent and preparation method thereof
  • Waterborne polyurethane graft-modified polyamine color fixing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) Preparation of polyamine polymer:

[0064] By mass percentage, 13.23% N-ethylethylamine (diethylamine) was added in the reactor, then 52.95% epichlorohydrin was added dropwise thereto, and the temperature was kept at 40°C for 3 hours to react, and then to the reaction Add 0.99% tetraethylenepentamine into the container, gradually raise the temperature to 80°C, return to room temperature after reflux reaction for 4 hours, and seal it for later use.

[0065] (2) Preparation of polyurethane prepolymer

[0066] Distill 5.96% PEG600 under reduced pressure at 100°C for 2 hours, add 13.24% acetone after cooling down to 55°C, and seal it for future use. Add 4.90% IPDI to the dry reactor, fill it with nitrogen for protection, add polyether diol drop by drop through the dropping funnel, add 0.132% stannous octoate, control the temperature at 55°C, and keep the reaction for 2.5 hours to obtain Polyurethane prepolymers.

[0067] (3) Chain extension reaction

[0068] Cool th...

Embodiment 2

[0074] (1) Preparation of polyamine polymer:

[0075] By mass percentage, add 2.51% part N-methylmethylamine (dimethylamine) in the reactor, dropwise thereinto the epichlorohydrin of 3.77% then, keep the temperature at 20 ℃ and react for 5 hours, then add Add 0.63% triethylenetetramine into the reactor, gradually raise the temperature to 50° C., return to room temperature after 5 hours of reflux reaction, and seal it for future use.

[0076] (2) Preparation of polyurethane prepolymer

[0077] Distill the mixture of 22.61% PEG600 and 18.84% PPG1500 under reduced pressure at 100°C for 2 hours, add 6.28% methyl ethyl ketone after cooling down to 50°C, and seal it for future use. Add 26.38% MDI to the dry reactor, fill it with nitrogen for protection, drop the mixture of the above two polyether diols into the dropping funnel, add 0.025% DBTDL, control the temperature at 65°C, and keep the reaction for 2 hours , to obtain a polyurethane prepolymer.

[0078] (3) Chain extension r...

Embodiment 3

[0085] (1) Preparation of polyamine polymer:

[0086] According to the mass percentage, add 32.19% trimethylamine into the reactor, then dropwise add 48.29% epichlorohydrin therein, keep the temperature at 60°C for 1.5 hours, then add 1.61% diethylenetri For amine, the temperature was gradually raised to 80°C, the reaction was refluxed for 2 hours, and then the temperature was lowered to room temperature, and sealed for later use.

[0087] (2) Preparation of polyurethane prepolymer

[0088] Distill 2.70% PEG600 under reduced pressure at 100°C for 2 hours, add 3.22% acetone after cooling down to 50°C, and seal it for future use. Add 2.00% IPDI to the dry reactor, fill it with nitrogen for protection, add polyether diol dropwise into the dropping funnel, add 0.013% of stannous octoate, control the temperature at 50°C, and keep the temperature for 2 hours to prepare Obtain polyurethane prepolymer.

[0089] (3) Chain extension reaction

[0090] Cool the polyurethane prepolymer...

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Abstract

A waterborne polyurethane graft-modified polyamine color fixing agent disclosed by the invention is shown in structural formula (I); the preparation method of the color fixing agent comprises the following steps: weighing the following materials by mass: 2.51%-32.19% of amino compounds, 3.77%-52.95% of epichlorohydrin, 0.63%-1.61% of polyethylene polyamine, 2.00%-26.38% of diisocyanate, 2.70%-42.82% of polyols, 0.013%-0.135% of catalysts, 0.96%-6.28% of blocking agents, 3.22%-13.24% of organic solvent a, 3.60%-17.95% of organic solvent b, 0.13%-2.58% of acidifying reagents, and the balance ofdeionized water, preparing polyamine high molecular polymer and polyurethane prepolymer in sequence, and performing a chain extending reaction, a blocking reaction, solvent removal, and emulsification to obtain the waterborne polyurethane graft-modified polyamine color fixing agent of the invention.

Description

technical field [0001] The invention belongs to the technical field of synthesis of textile dyeing and finishing auxiliaries, and relates to a color-fixing agent, in particular to a water-based polyurethane graft-modified polyamine color-fixing agent, and also relates to a preparation method of the color-fixing agent. Background technique [0002] Textiles dyed with anionic dyes such as direct dyes and acid dyes have poor color fastness to wet treatment. Even fabrics dyed with reactive dyes cannot meet the requirements of high-quality products. Color fastness standards for wearing and use must be achieved through color-fixing treatment. At present, most of my country's high-quality dyed textiles, especially export products, including clothing fabrics and decorative fabrics, need to be fixed with imported color-fixing agents, and the cost is relatively high. Although some color fixing agents have been developed in China, such as Guangdong Demei’s polymer cationic compound co...

Claims

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Application Information

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IPC IPC(8): D06P5/10D06P5/08C08G18/50C08G18/10C08G18/12C08G65/26C08G65/333
Inventor 樊增禄李庆
Owner XI'AN POLYTECHNIC UNIVERSITY
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