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Novel acid dye color fixing agent as well as preparation method and application method thereof

A technology of acid dyes and color-fixing agents, which can be used in dyeing, textiles, and papermaking. It can solve the problems of waste products, color-fixing agent spots, and defective products, and achieve the effects of simple production process, good effect, and low formaldehyde content.

Inactive Publication Date: 2016-01-06
HUZHOU BOREN TEXTILES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During color fixing treatment, when the color fixing agent encounters strong acid or concentrated organic acid, a large amount of white precipitate will be produced, and it is also easy to produce color fixing agent spots, defective products or even waste products

Method used

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  • Novel acid dye color fixing agent as well as preparation method and application method thereof
  • Novel acid dye color fixing agent as well as preparation method and application method thereof
  • Novel acid dye color fixing agent as well as preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Using bisphenol A, 2-naphthol, formaldehyde, etc. as main raw materials, using sodium sulfite, dehydration condensation reaction between phenols and formaldehyde molecules, and sulfonation reaction of benzene ring of phenolic substances, synthesized in aqueous solution containing sulfonic acid group The fixing agent SBNF.

[0022] Its synthetic steps are:

[0023] (1) Synthesis of Intermediate I: Add 4.56g of bisphenol A into a 250mL four-neck flask with stirring device, condenser and separatory funnel, add 30g of ethanol, 50g of water, 2.40g of formaldehyde and 3.2g of sodium sulfite in turn, and stir Raise the temperature to 80°C, and keep it warm for about 4 hours until the pH of the solution does not change;

[0024] (2) Synthesis of Intermediate II

[0025] Add 20g of concentrated sulfuric acid into a 250mL four-neck flask, add 7.20g of naphthol at 90°C, raise the temperature to 115°C, react for 3 hours, then add 10g of concentrated sulfuric acid, and react for 3...

Embodiment 2

[0029] The same as in Example 1, the difference is that the amount of each component in the step (2) is increased by 0.5 times, and the obtained intermediate II and the intermediate I in the embodiment 1 are processed according to the step (3) to obtain the product B.

Embodiment 3

[0031] Same as Example 1, the difference is: the dosage of each component in the step (2) is doubled, and the obtained intermediate II and the intermediate I in the embodiment 1 are processed according to the step (3) to obtain the product C.

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Abstract

The invention discloses a novel acid dye color fixing agent which is generated through dehydration condensation reaction and sulfonation reaction of phenolic substances and formaldehyde under the action of sodium sulfite and concentrated sulfuric acid. A preparation method comprises the following steps: respectively preparing an intermediate I and an intermediate II; generating SBNF through the intermediate I and the intermediate II under the action of formaldehyde and acetic acid. An application method of the color fixing agent comprises the following steps: preparing 1.5-3.5% (owf) of color fixing finishing liquid in a container; putting the dyed fabric into the color fixing finishing liquid with 10% (owf) of a formaldehyde catching agent, wherein the bath ratio is 1: 30; adjusting the PH with acetic acid and ammonia water; performing water-bath heating until the temperature reaches 80 DEG C, and putting the chinlon subjected to the dyeing process into the water bath; vibrating, keeping the temperature for 30 min-50 min, washing with hot water when the temperature is 60 DEG C, then washing with cold water, and drying. The prepared color fixing agent has a good color fixing effect on chinlon or protein fibers, the wet treatment effect is relatively good, the production process is easy and convenient, the formaldehyde content of the color fixing agent is low, and the color fixing agent is harmless to the skin.

Description

technical field [0001] The invention relates to an acid dye color-fixing agent, in particular to an acid dye color-fixing agent in the textile industry, a preparation method and an application method thereof. Background technique [0002] Since the 1930s, foreign chemical companies have successively developed and researched various color fixing agents. Reactive dyes were not yet invented at that time, so the focus was on direct and acid dyes, among which dicyandiamide formaldehyde resin and copper-containing dicyandiamide formaldehyde resin had better color fixing effects, and gradually formed commercial production, namely ColourfixY and CoprantexB (later developed In the early 1950s, reactive dyes came out. Soon Bu Neimen Chemical Co., Ltd. proposed a patent to treat with cationic color fixing agents and weak acid substances, which can improve the wet fastness of reactive dyes. Since then, there have been more and more varieties of color-fixing agents, but for half a centu...

Claims

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Application Information

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IPC IPC(8): D06P5/08D06P1/39D06P3/24D06P3/06C08G8/28C08G8/24
Inventor 徐强
Owner HUZHOU BOREN TEXTILES
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