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A kind of environment-friendly synthetic tannin fixing agent and its preparation method and application

A technology of tannin fixation and chelating agent, applied in the field of textile dyeing and finishing, can solve the problems of poor stability and easy fixation spots, poor fixation fastness, and large color change.

Active Publication Date: 2020-11-24
东莞市中纺化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cost of the synthetic tannin color fixing agent independently developed in China is low, the products all have problems such as poor color fastness, large color change or poor stability, and easy to fix color spots.

Method used

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  • A kind of environment-friendly synthetic tannin fixing agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Add 18 parts of bisphenol S, 17 parts of sodium phenolsulfonate, 1 part of potassium hydroxide and 48 parts of deionized water into a reaction device with a stirrer and a condenser, heat up to 85°C, and add 12 parts of formaldehyde solution dropwise , the rate of addition is 20ml / min. After the dropwise addition is completed within 1 hour, the temperature is raised to boiling, and the heat preservation and reflux reaction is carried out for 10 hours; MPa) to react for 0.5 hour, lower the temperature to 80° C.; then add 0.8 parts of polyepoxysuccinic acid and 3 parts of sodium p-toluenesulfonate, stir for 0.5 hour, and obtain a synthetic tannin color fixing agent after cooling. The solid content of the color fixing agent is about 43%.

[0075] The mass percentages of the various raw materials of the color-fixing agent in Example 1 are: 18% of phenolic compounds, 17% of aromatic sulfonic acid compounds, 1% of catalyst, 12% of formaldehyde solution, 0.6% of modifying agent...

Embodiment 2

[0077] Add 15 parts of sulfonated bisphenol S, 10 parts of phenol sulfonic acid, 10 parts of naphthol sulfonic acid, 5 parts of sodium hydroxide, 2 parts of ethylenediamine di-o-phenylacetic acid and 39 parts of deionized water with a stirrer and In the reaction device of the condenser, heat up to 90°C, add 15 parts of formaldehyde solution dropwise, and the drop rate is 15ml / min. After the dropwise addition is completed within 2 hours, heat up to boiling, keep warm and reflux for 6 hours; then add 2 1 part of sodium thiosulfate, continue to keep warm for 1.5 hours, then vacuumize (vacuum degree is 0.05-0.1MPa) for 1 hour, cool down to 60 ° C; add 2 parts of sodium p-dodecyl diphenyl ether disulfonate, After stirring for 0.5 hour, the synthetic tannin color fixing agent is obtained after cooling. The color fixing agent has a solid content of about 45%.

[0078] The mass percentages of each raw material of the color-fixing agent in Example 2 are: 15% of phenolic compound, 20% ...

Embodiment 3

[0080] Add 15 parts of bisphenol S, 5 parts of phenol, 16 parts of naphthalenesulfonic acid, 3 parts of potassium hydroxide, 1.5 parts of ethylenediamine di-o-phenylacetic acid, 1 part of sodium xylenesulfonate and 48 parts of deionized water with In the reaction device of the agitator and condenser, heat up to 95°C, add 10 parts of formaldehyde solution dropwise at a rate of 15ml / min, after the dropwise addition is completed within 1.5 hours, heat up to boiling, and keep warm for reflux for 7 hours; then Then add 1 part of sodium bisulfite, continue the heat preservation reaction for 0.5 hours, then vacuumize (0.05-0.1 MPa) and react for 1 hour, after cooling down, the synthetic tannin color fixing agent is obtained. The solid content of the color fixing agent is about 44%.

[0081] The mass percent of each raw material of color fixing agent in embodiment 3 is: phenolic compound 20%, aromatic sulfonic acid compound 16%, catalyst 3%, formaldehyde solution 10%, modifier 1%, che...

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Abstract

The invention discloses an environment-friendly type synthetic tannin color fixing agent as well as a preparation method and application thereof. The color fixing agent is a synthetic tannin color fixing agent prepared from the following raw materials in percentage by mass: 15-30% of a phenol compound, 10-30% of an aromatic sulfonic acid compound, 1-5% of a catalyst, 5-15% of a formaldehyde solution, 0.5-2% of a chelating agent, 0.5-3% of a modifier, 1-4% of a dispersant and the balance of water. When being applied to color fixation of chinlon and blended fabrics, the synthetic tannin color fixing agent disclosed by the invention has the advantages of being good in acid resistance stability, small in color change, good in color fastness, and the like.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing and finishing, and relates to an environment-friendly synthetic tannin color fixing agent, a preparation method and application thereof. Background technique [0002] Nylon fabrics are mostly dyed with acid dyes. However, when dyeing nylon fabrics with acid dyes, due to the structural characteristics of less amino groups at the end of nylon fiber molecules, acid dyes mostly rely on the van der Waals force and hydrogen bonds between dye molecules and fabrics to dye fibers, while hydrogen bonds and van der Waals forces The force is weak, and the dye molecules are easy to fall off from the fabric under external force, which leads to problems such as poor color fastness. In order to improve the wet fastness of nylon and spandex fabrics dyed with acid dyes, color fixing treatment is required. [0003] Natural tannin is the earliest color-fixing agent used for color-fixing nylon fabrics. Its co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P5/08D06P5/04C08G8/24
CPCC08G8/24D06P5/04D06P5/08
Inventor 罗灯洪袁东邓燕张继斌朱立太程宝峰
Owner 东莞市中纺化工有限公司
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