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Method for preparing nano TiO2 composite leather greasing agent with ultraviolet protecting function

A leather fatliquor and nanotechnology are applied in the field of preparation of nano-TiO2 composite leather fatliquor to achieve the effects of strong covering power, good ultraviolet protection function and good anti-ultraviolet light performance.

Inactive Publication Date: 2014-01-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano TiO 2 , the application of hydrogenated ricinoleic acid in the research of leather fatliquor, there are few reports at home and abroad

Method used

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  • Method for preparing nano TiO2 composite leather greasing agent with ultraviolet protecting function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1) Take 100mL of 2mol / L ammonia water and put it in a 500mL three-necked bottle, add the titanium sulfate solution (the molar ratio of titanium sulfate to ammonia water is 1:4) into the three-necked bottle at room temperature, and stir to obtain a white precipitate. Washed by centrifugation several times until SO-free 4 2- ions are detected. The precipitate was washed and dispersed in 4 mol / L nitric acid solution, refluxed at 70 °C for a period of time, centrifuged, washed, and dried to obtain rutile nano-TiO 2 .

[0012] 2) Mix 10g hydrogenated ricinoleic acid with 1g nano-TiO 2 After being fully dissolved with 20 mL of absolute ethanol, the reaction was ultrasonically heated at 80 °C for 3 h, and air-dried at 60 °C for 4 h. Nano-TiO modified by hydrogenated ricinoleic acid 2 .

[0013] 3) 10g of hydrogenated ricinoleic acid modified nano-TiO 2 React with 10g of maleic anhydride at 85°C for 4h, cool down to 75°C, add 35g of saturated sodium bisulfite solution d...

Embodiment 2

[0015] 1) Take 100mL of 2mol / L ammonia water and put it in a 500mL three-necked bottle, add the titanium sulfate solution (the molar ratio of titanium sulfate to ammonia water is 1:4) into the three-necked bottle at room temperature, and stir to obtain a white precipitate. Washed by centrifugation several times until SO-free 4 2- ions are detected. The precipitate was washed and dispersed in 4 mol / L nitric acid solution, refluxed at 70 °C for a period of time, centrifuged, washed, and dried to obtain rutile nano-TiO 2 .

[0016] 2) Mix 50g hydrogenated ricinoleic acid with 2g nano-TiO 2 After being fully dissolved with 50 mL of absolute ethanol, the reaction was ultrasonically heated at 80 °C for 3 h, and air-dried at 60 °C for 4 h. Nano-TiO modified by hydrogenated ricinoleic acid 2 .

[0017] 3) 20g of hydrogenated ricinoleic acid modified nano-TiO 2 React with 30g of maleic anhydride at 120°C for 5h, cool down to 75°C, add 100g of saturated sodium bisulfite solution...

Embodiment 3

[0019] 1) Take 100mL of 2mol / L ammonia water and put it in a 500mL three-necked bottle, add the titanium sulfate solution (the molar ratio of titanium sulfate to ammonia water is 1:4) into the three-necked bottle at room temperature, and stir to obtain a white precipitate. Washed by centrifugation several times until SO-free 4 2- ions are detected. The precipitate was washed and dispersed in 4 mol / L nitric acid solution, refluxed at 70 °C for a period of time, centrifuged, washed, and dried to obtain rutile nano-TiO 2 .

[0020] 2) Mix 30g hydrogenated ricinoleic acid with 4g nano-TiO 2 After being fully dissolved with 40 mL of absolute ethanol, the reaction was ultrasonically heated at 80 °C for 3 h, and air-dried at 60 °C for 4 h. Nano-TiO modified by hydrogenated ricinoleic acid 2 .

[0021] 3) 30g of hydrogenated ricinoleic acid modified nano-TiO 2 React with 60g of maleic anhydride at 85-150°C for 6h, cool down to 80°C, add 200g of saturated sodium bisulfite solut...

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Abstract

The invention discloses a method for preparing a nano TiO2 composite leather greasing agent with an ultraviolet protecting function. At present, the research on the application of nano TiO2 and hydrogenated ricinoleic acids to the leather greasing agent has been rarely reported at home. Rutile nano TiO2 with an excellent anti-ultraviolet capability is prepared by adopting a chemical precipitation method, and is modified with the hydrogenated ricinoleic acids, and modified rutile nano TiO2 and maleic anhydride react to obtain the TiO2 composite leather greasing agent with the ultraviolet protecting function. The ultraviolet protecting performance is realized by the hydrogenated ricinoleic acids and rutile nano TiO2. The hydrogenated ricinoleic acids are ricinus oil derivates, and the greasing agent manufactured in such a way that double bonds in molecules of the hydrogenated ricinoleic acids are subjected to hydrotreating is excellent in ultraviolet protecting performance. An electron hole formed in the surface of the rutile nano TiO2 has the advantages of relatively high recombination speed and relatively high UV-shielding capability, and the leather is provided with the ultraviolet protecting function.

Description

technical field [0001] The invention belongs to the technical field of leather chemical industry, in particular to nano-TiO with ultraviolet protection 2 The preparation method of compound leather fatliquoring agent. Background technique [0002] With the development of the leather industry and the improvement of people's living standards, people's requirements for the quality of leather products are getting higher and higher, and the varieties that highlight the characteristics of genuine leather such as aniline leather, suede leather, white leather and light-colored leather And so the output is getting bigger and bigger. Because light-colored leather products are easily affected by ultraviolet rays during storage and use, they will be yellowed and aged, which will affect the quality of the finished leather. UV stability. Due to the large amount of fatliquor used in the processing of leather products, it also has a greater impact on the quality of finished leather. Beca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/02
Inventor 马建中段力民吕斌段徐宾张健康孙海云
Owner SHAANXI UNIV OF SCI & TECH
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