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Alkaline titanium sol color-fixing agent and preparation method and application thereof

A technology of titanium sol and color fixing agent, which is applied in the field of alkaline titanium sol color fixing agent and its preparation, can solve the problem that the color fastness to light has not been effectively improved, the color fixing rate and color fastness have not been greatly improved, and the printing and dyeing process has become more serious. The difficulty of biological treatment of wastewater and other issues, to achieve good ultraviolet light absorption performance, improve dyeing rate and fixation rate, and promote the effect of adsorption and dyeing

Active Publication Date: 2022-07-19
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the traditional color fixing agent soda ash can improve the color fastness of wood, its strong alkalinity will hydrolyze 20-40% of reactive dyes, reducing the probability of reactive dyes reacting with wood fibers to form covalent bonds; Dyes are easily adsorbed on the surface of wood to form multi-layered associations, which hinder the further adsorption and diffusion of dye molecules, resulting in floating colors, which not only make the color fixation rate and color fastness not much improved, but also increase water consumption and Environmental pollution; at the same time, adding a large amount of soda ash makes the printing and dyeing wastewater contain a large amount of inorganic salts, which intensifies the difficulty of biological treatment of printing and dyeing wastewater
Chinese patent CN104589444B discloses a preparation method of alkaline silica sol color fixing agent. Although the color fixing rate, soaping resistance and color fastness to rubbing have been improved, the color fastness to light has not been effectively improved. It is easy to cause fading and affect the service life of stained wood

Method used

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  • Alkaline titanium sol color-fixing agent and preparation method and application thereof

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Embodiment 1

[0034] The preparation method of the alkaline titanium sol of the present invention specifically comprises the following steps:

[0035] (1) Mix 34g of butyl titanate, 26.3g of diethanolamine and 64.4g of absolute ethanol, stir evenly, and prepare solution A.

[0036] (2) Mix 21.6g of distilled water and 32.2g of absolute ethanol evenly to prepare solution B.

[0037] (3) Take solution A and put it into the reactor, heat it up to 60 °C at a heating rate of 2 °C / min, start the stirrer in the reactor, and control the stirring speed to be 500 rpm / min; add solution B at a dropping speed of 1 mL / min It was slowly added dropwise to the reactor, condensed and refluxed, and after 2 hours of reaction, 0.2 g of γ-aminopropyl ethoxysilane was added dropwise, and the reaction was continued to stir for 1 hour, and allowed to stand for 12 hours to obtain a milky white alkaline titanium sol solid. Toner.

[0038] The viscosity of the alkaline titanium sol color-fixing agent in this embodim...

Embodiment 2

[0044] The invention relates to the application of an alkaline titanium sol color-fixing agent in the field of wood dyeing.

[0045] The alkaline titanium sol fixing agent and soda ash of Example 1 were compared, and the fixing effect of reactive dyes on wood dyeing was investigated:

[0046] Reactive red X-3B dye solution, reactive red M-3BE dye solution, reactive blue X-BR dye solution, reactive blue M-2GE dye solution, reactive yellow X-R dye solution, reactive Yellow M-3RE dye solution; add 40g / L yuanming powder to each dye solution, dye poplar veneer (size 100×50×2mm) at constant temperature of 1:20 at 80°C for 3h.

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Abstract

The invention provides an alkaline titanium sol color-fixing agent. The alkaline titanium sol color-fixing agent is made of butyl titanate, water, alcohol, catalyst and silane coupling agent as raw materials, and the molar ratio is 1-3:8 ~16:18~25:2.0~3.5:0.001~0.01 are mixed and prepared by sol-gel reaction. The invention also provides a preparation method of the alkaline titanium sol color-fixing agent. The invention has the advantages of significantly improving the light fastness of wood and the like.

Description

technical field [0001] The invention relates to the technical field of color-fixing agents, in particular to an alkaline titanium sol color-fixing agent and a preparation method and application thereof. Background technique [0002] Under the action of the concentration gradient of the dye liquor and the capillary force of the wood, the reactive dyes diffuse into the interior of the wood along the wood conduits and pits until equilibrium. At this time, the reactive dyes are combined with the wood fibers through the van der Waals force, and the force is weak and adheres to the surface and interior of the wood. The reactive dyes may fade, making the wood's color fastness, color fastness, especially rubbing, washing and light fastness poor. In order to solve the problem of poor color fastness and color fastness of reactive dyes on wood, the reactivity of reactive groups in reactive dyes is used to make reactive groups of reactive dyes and cellulose in wood fibers under alkaline...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D15/00B27K5/02
CPCC09D15/00B27K5/02
Inventor 喻胜飞刘元李贤军罗武生胡嘉裕唐玉莲丁晓冬
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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