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Environment-friendly hydrophilic color fixing agent for cotton and preparation method thereof

A color-fixing agent and an environment-friendly technology, which is applied in the direction of dyeing, plant fiber, fiber treatment, etc., can solve the problem that the color fastness of the fabric cannot be guaranteed and the hydrophilicity, hydrophilicity and handfeel have not been improved, and the color-fixing agent Problems such as good and bad are uneven, to achieve the effect of improving color fastness, improving color fastness, and improving color fastness

Active Publication Date: 2020-11-17
多恩生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention also discloses a preparation method of the alkali-resistant and chlorine-resistant formaldehyde-free reactive dye fixing agent. The color fixing agent has high alkali resistance, high chlorine fastness, good washing resistance, and has no effect on the appearance and performance of fabrics. No toxic substances are released during preparation and use, which is beneficial to environmental protection, but its hydrophilicity and hand feeling have not been improved
[0009] To sum up, the color fixing agents currently on the market are mixed, and most of them only solve the problem of washing fastness, and cannot guarantee other color fastness, fabric feel and hydrophilicity, which may cause clothes to become hard, etc. question

Method used

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  • Environment-friendly hydrophilic color fixing agent for cotton and preparation method thereof
  • Environment-friendly hydrophilic color fixing agent for cotton and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of described environment-friendly type cotton with hydrophilic color-fixing agent:

[0041] (1) Add triethanolamine and epichlorohydrin sequentially to the reaction vessel, heat up to 85°C and react for 2 hours to obtain a hydroxyl-terminated quaternary ammonium salt chain extender, wash the resulting product with acetone several times, and remove it by distillation under reduced pressure Residual solvent, vacuum drying, the mol ratio of triethanolamine and epichlorohydrin is 0.7:1;

[0042] (2) Put polyoxypropylene diol into the reactor, distill under reduced pressure at 100°C for 2 hours, add acetone after adjusting the temperature to 50°C, seal it for later use, and add 1,6-hexamethylene diisocyanate into the dry reactor , under the protection of nitrogen, drop the above polyoxypropylene diol, and add dibutyltin dilaurate, control the temperature at 60 ° C, and keep it warm for 1 hour to prepare a polyurethane prepolymer; polyoxypropylene diol,...

Embodiment 2

[0047] The preparation method of described environment-friendly type cotton with hydrophilic color-fixing agent:

[0048] (1) Add diisopropanolamine and epichlorohydrin successively to the reaction vessel, heat up to 95° C. and react for 1 hour to obtain a hydroxyl-terminated quaternary ammonium salt chain extender. The resulting product is washed several times with acetone, and the Pressure distillation removes residual solvent, vacuum drying, the mol ratio of triethanolamine and epichlorohydrin is 1:1;

[0049] (2) Put polyoxypropylene diol into the reactor, distill under reduced pressure at 110°C for 2 hours, add acetone after adjusting the temperature to 50°C, seal it for later use, and add 1,6-hexamethylene diisocyanate into the dry reactor , under the protection of nitrogen, drop the above polyoxypropylene diol, and add ditin octoate, control the temperature at 58 ° C, keep warm for 1 hour, and obtain a polyurethane prepolymer; polyoxypropylene diol, 1,6-hexanediol The ...

Embodiment 3

[0054] The preparation method of described environment-friendly type cotton with hydrophilic color-fixing agent:

[0055] (1) Add diisopropanolamine and epichlorohydrin successively to the reaction vessel, heat up to 90° C. and react for 1 hour to obtain a hydroxyl-terminated quaternary ammonium salt chain extender. The resulting product is washed several times with acetone, and the Pressure distillation removes residual solvent, vacuum drying, the mol ratio of triethanolamine and epichlorohydrin is 0.9:1;

[0056] (2) Put polyoxypropylene diol into the reactor, distill under reduced pressure at 105°C for 2 hours, adjust the temperature to 50°C, add acetone, seal it for later use, and add 1,6-hexamethylene diisocyanate into the dry reactor , under the protection of nitrogen, drop the above polyoxypropylene diol, and add zinc naphthenate, control the temperature at 62 ° C, keep the reaction for 1.5 hours, and obtain a polyurethane prepolymer; polyoxypropylene diol, 1,6-hexane ...

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Abstract

The invention relates to a hydrophilic color fixing agent for cotton and a preparation method thereof. The color fixing agent is prepared from a quaternary ammonium cationic polyurethane color fixingagent, a polyacrylic acid color fixing agent, a pH regulator, a cosolvent, ethyl alcohol and water, and the quaternary ammonium cationic polyurethane color fixing agent and the polyacrylic acid colorfixing agent are prepared through polymerization of several functional monomers; and a quaternary ammonium cationic group and a reactive epoxy group are introduced into a polyurethane macromolecular chain, so that the final product color fixing agent has an excellent film-forming property, and the color fastness of reactive dyes is remarkably improved. Meanwhile, harmful substances such as formaldehyde are not contained, and environment-friendly requirements are met.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing and finishing, and in particular relates to a hydrophilic color-fixing agent for cotton and a preparation method thereof. Background technique [0002] Cotton fiber is a general term for various cotton plant fibers and is the main raw material for the textile industry. Among textile fibers, cotton fiber belongs to short fiber, and its main component is cellulose. In the process of moisture absorption and dyeing, a large number of hydroxyl groups contained in fiber molecules play an important role. Free hydroxyl groups can also form hydrogen bonds with color fixing agents and dyes. [0003] At present, the main raw materials used for cotton fiber dyeing include reactive dyes, direct dyes, sulfur dyes and vat dyes. Among them, although reactive dyes have the shortest development time, they are used in the largest amount. Reactive dyes are also called reactive dyes, which have reactive gro...

Claims

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Application Information

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IPC IPC(8): D06P5/08D06M15/568C08G18/66C08G18/48C08G18/32C08G18/10C08F220/06C08F220/58D06M101/06
CPCD06P5/08D06M15/568C08G18/6688C08G18/48C08G18/10C08F220/06C08F220/58D06M2101/06D06M2200/50C08G18/3281C08F220/585
Inventor 赖亚琴苏宇吕江龙
Owner 多恩生物科技有限公司
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