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Water polyurethane dye production of coating, textile, artificial leather and leather

A technology of water-based polyurethane and manufacturing method, which is applied in the direction of organic dyes, etc., can solve the problems of poor water resistance and poor color fastness, and achieve the effects of improved water resistance, good friction resistance, and increased color fastness

Inactive Publication Date: 2005-07-27
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the water-based dyes used in industrial production are small molecular organic dyes, and their color fastness and water resistance are relatively poor.

Method used

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  • Water polyurethane dye production of coating, textile, artificial leather and leather
  • Water polyurethane dye production of coating, textile, artificial leather and leather
  • Water polyurethane dye production of coating, textile, artificial leather and leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]Mixture of polyether and amino polyether: 50 kg into the reactor, 110 ° C, 0.8 MPa, after dehydration for 0.5 hours, add TDI: 26 kg, 85 ° C for 2-4 hours (NCO% is 11.1%) , add disperse blue: 13.5 kg, diethylene glycol: 3.3 kg, trimethylolpropane: 1.8 kg, N-methylpyrrolidone: 10 kg, react at 80°C for 1-4 hours (NCO% is 4.55 %), add dimethylol propionic acid: 4.8 kilograms, acetone: 60 kilograms, react 1-4 hour (NCO% is 0.67%) under the condition of 60 ℃ to obtain polyurethane dye resin, its structural formula is I, convert polyurethane dye resin to Put into a high-speed disperser, add triethylamine at 800 rpm and 30°C: 4 kg, react for 60 seconds, add water at 30°C: 300 kg, and obtain polyurethane dye emulsion after 60 seconds. Its structural formula is II. Desolvation kettle, 50℃, 0.8MPa to remove acetone to obtain anionic water-based polyurethane dye. The dye has high dyeing fastness, and after wet-process PU leather is soaked in water at 25°C for 72 hours, the color wi...

Embodiment 2

[0051] Polyether polyol: Add 50 kg to the reactor at 110°C, 0.8MPa, after dehydration for 0.5 hours, add TDI: 19 kg, react at 90°C for 2-4 hours (NCO% is 8.24%), add direct green B: 12.8 kg, diethylene glycol: 1.9 kg, trimethylolpropane: 1.6 kg, N-methylpyrrolidone: 10 kg, react at 85°C for 1-4 hours (NCO% is 3.89%), Add N-methyldiethanolamine: 6 kg, acetone: 70 kg, react at 35°C for 1-4 hours (NCO% is 0.46%) to obtain polyurethane dye resin, transfer polyurethane dye resin to high-speed disperser, 800 rpm Add glacial acetic acid at 20°C: 3.4 kg, react for 30 seconds, add 280 kg of water at 20°C, obtain polyurethane dye emulsion after 45 seconds, transfer to the precipitation kettle, remove acetone at 55°C, 0.8MPa to obtain Cationic water-based polyurethane dye. The dye has high dyeing fastness, and the fabric will not fade after being soaked in ethanol for 8 hours.

[0052] In this embodiment, the structural formulas of the polyurethane dye resin and the polyurethane dye em...

Embodiment 3

[0054] 80 kg of polyester polyol, 30 kg of hydroxyl-terminated polybutadiene rubber, 15.8 kg of acid blue BRL, added to the reactor at 110°C and 0.8 MPa, after dehydration for 0.5-2 hours, added TDI: 33 kg, two Methylol propionic acid: 5.8 kg, react at 96°C for 2-4 hours (NCO% is 6.38%), add 1,4-butanediol: 2.2 kg, N-methylpyrrolidone: 15 kg, at 80°C React at low temperature for 1-4 hours (NCO% is 1.49%), add acetone: 100 kg, react at 60°C for 1-4 hours (NCO% is 0.63%) to obtain polyurethane dye resin, and transfer polyurethane dye resin to high-speed disperser , Add triethylamine: 4.8kg at 1400 rpm, 25°C, react for 60 seconds, add water at 25°C: 400 kg, get polyurethane dye emulsion after 60 seconds, transfer to the solvent removal kettle, 50°C, 0.8MPa Remove the acetone to obtain the anionic water-based polyurethane dye. The tensile strength of the dye after film formation: 7.5Mpa, elongation: 450%, good hand feeling, bright emulsion color, especially suitable for dyeing na...

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Abstract

Production of water polyurethane dye for paint, fabric, artificial leather and leather is carried out by using grafting reacting process, dye parent containing active hydrogen reacting with isocyanate, connecting dye parent with polyurethane molecular chain, expanding chain, cross linking, side hanging active group, inducing hydrophilic agent, inducing cross-linking point, active group and hydrophilic group on polyurethane chain, neutralizing, emulsifying, precipitating, and self-curing water polyurethane dye. It achieves low cost, bright color, no pollution, and good dye firmness.

Description

technical field [0001] The present invention relates to the manufacture method of water-based polyurethane dye, specifically the manufacture method of the water-based polyurethane dye used for paint, fabric, artificial leather and leather. Background technique [0002] Dyes are able to make fibers (natural fibers, such as cotton, hemp, wool, silk, etc.; man-made fibers, such as polyester, acrylic, polypropylene, vinylon, etc.) and other colored substances (paper, wood, leather, photosensitive materials, food, medicine , cosmetics, inks, paints, plastics, rubber, etc.) to obtain a class of chemical products with bright and firm colors, and its application range involves all aspects of people's lives. As people's requirements for the comprehensive performance of dyes are getting higher and higher, and with the strengthening of environmental protection, some allergic dyes, highly toxic dyes, dyes containing environmental hormones, and dyes with excessive heavy metal content are...

Claims

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Application Information

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IPC IPC(8): C09B69/10
Inventor 许戈文戴家兵熊潜生王彤
Owner ANHUI UNIVERSITY
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