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Salt-free dyeing and hand feeling finishing agent for pH value temperature response cotton

A temperature-responsive, salt-free dyeing technology, applied in the field of pH value & amp, can solve the problems of environmental pollution, high salt content in printing and dyeing wastewater, which is difficult to deal with, and achieve the effect of reducing the initial dyeing rate, good hand feeling, and good dyeing rate

Pending Publication Date: 2022-02-18
南通市第三毛巾厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Reactive dyes on the market usually need to use salt to improve the adhesion strength of the dye and the feel of the fabric, but this will lead to a large amount of salt in the discharged printing and dyeing wastewater, which is difficult to treat and is likely to cause environmental pollution

Method used

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  • Salt-free dyeing and hand feeling finishing agent for pH value temperature response cotton
  • Salt-free dyeing and hand feeling finishing agent for pH value temperature response cotton
  • Salt-free dyeing and hand feeling finishing agent for pH value temperature response cotton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] S1: Synthesis and preparation of linear double-ended epoxy polyether siloxane:

[0033] Take 30g of glycidyl ether-based allyl epoxy vinyl ether in a four-necked flask, slowly add 5g of terminal hydrogen silicone oil dropwise under stirring, and raise the temperature to 60°C at the same time. After the temperature stabilizes, add dropwise the catalyst chloroplatinic acid / 5 drops of isopropanol solution, heat preservation reaction for 5 hours, after the reaction, remove small molecular oligomers and impurities by vacuum distillation and filtration to obtain linear double-ended epoxy polyether siloxane, wherein the reaction equation is as follows:

[0034]

[0035] S2: Synthesis and preparation of amino block hyperbranched silicone surfactant:

[0036] Take 30g of the linear double-ended epoxy polyether siloxane prepared in the step (1), and 3g of diethylenetriamine respectively into a four-necked flask, stirring continuously, first raising the temperature of the reac...

Embodiment 2

[0048] S1: Synthesis and preparation of linear double-ended epoxy polyether siloxane:

[0049] Take 30-40g of glycidyl ether allyl epoxy ethylene ether in a four-necked flask, slowly add 7g of terminal hydrogen silicone oil dropwise under stirring, and raise the temperature to 70°C at the same time, and add the catalyst platinum chloride dropwise after the temperature is stable 8 drops of acid / isopropanol solution, heat preservation reaction for 7 hours, after the reaction, remove small molecule oligomers and impurities by vacuum distillation and filtration to obtain linear double-ended epoxy polyether siloxane;

[0050] Take 40 g of the linear double-ended epoxy polyether siloxane prepared in the step (1), and 5 g of diethylenetriamine, respectively, and put them into a four-necked flask in turn, and keep stirring. First, raise the temperature of the reaction system to 60° C. Raise the temperature to 80°C and keep the reaction for 8 hours. After the reaction, distill and redu...

Embodiment 3

[0059] conventional staining

[0060]

[0061] Comparing Example 1 and Example 2, two groups of pH value & temperature response cottons were applied on two groups of cotton fabrics with salt-free dyeing and hand finishing agent, and then two groups of cotton fabrics were treated with three colors (reactive red 3BS, Reactive Yellow 3RS and Reactive Blue KB-N) are dyed, and compared with initial dyeing rate, dyeing rate, fixation rate and feel after dyeing, draw the pH value & temperature that embodiment one makes Response to cotton with better effect of salt-free dyeing and hand finishing agent;

[0062] image 3 It is the dyeing effect comparison table, according to image 3 For contrast, the cotton fabrics were divided into two groups of control groups, one group used the salt-free dyeing and hand finishing agent for pH value & temperature response cotton prepared in Example 1, one did not add additives, and the two groups of cotton fabrics used three Dyes of different ...

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Abstract

The invention discloses a salt-free dyeing and hand feeling finishing agent for pH value temperature response cotton, and relates to the technical field of reactive dye salt-free dyeing. The salt-free dyeing and hand feeling finishing agent is prepared through the steps of S1, synthesis and preparation of linear double-end epoxy polyether siloxane, S2, synthesis and preparation of an amino block hyperbranched organosilicon surfactant, and S3, application of hyperbranched organosilicon. According to the salt-free dyeing and hand feeling finishing agent for the pH value temperature response cotton, when the temperature is higher than the cloud point temperature, the surfactant is easily adsorbed to the surfaces of fibers, the fibers are provided with a certain amount of positive charges by adjusting the pH value of dye liquor to be faintly acid or neutral and performing amino protonation, so electrostatic repulsion between the fibers and dye is weakened, and the good dye-uptake is achieved; and the hyperbranched organosilicon surfactant is used for replacing a neutral electrolyte necessary for dyeing cotton by a reactive dye, so that the problem that the environment is polluted due to the fact that the salt content in the printing and dyeing wastewater is large and is difficult to treat is effectively solved, and the fabric is endowed with good hand feeling while the dye-uptake is ensured.

Description

technical field [0001] The invention relates to the technical field of salt-free dyeing of reactive dyes, in particular to a salt-free dyeing and hand finishing agent for pH value & temperature responsive cotton. Background technique [0002] Reactive dyes, also known as reactive dyes, are a new class of water-soluble dyes that appeared in the 1950s. Reactive dye molecules contain active groups that can react with hydroxyl groups in cellulose and amino groups in protein fibers. Generate covalent bonds and generate "dye-fiber" compounds. Reactive dyes have the characteristics of bright colors, good level dyeing, simple dyeing methods, high color fastness, complete chromatograms and low cost. They are mainly used in cotton, linen, viscose, etc. Dyeing and printing of glue, silk, wool and other fibers and their blended fabrics. [0003] When dyeing reactive dyes on the market, salt is usually used to improve the adhesion strength of the dye and the feel of the fabric, but this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/52D06P3/66C08G77/46
CPCD06P1/5292D06P3/66C08G77/46
Inventor 张珂邵建波
Owner 南通市第三毛巾厂有限公司
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