A fatliquoring agent with formaldehyde removal function and preparation method thereof

A fatliquor and functional technology, applied in the field of fatliquor with formaldehyde removal function and its preparation, can solve the problems of limited formaldehyde capture effect and unreported application, achieve good capture and removal function, and improve easy oxidation and discoloration Effect

Active Publication Date: 2017-01-04
四川亭江新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, their application in leather also has disadvantages: unmodified tannins are mostly insoluble in water, synthetic tannins modified with formaldehyde themselves contain free formaldehyde, and small hydrolyzed molecules soluble in water have very limited effect on capturing formaldehyde
However, there is no report on the application in the field of leather chemical industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 178g of oleic acid monoglyceride and 70g of p-hydroxybenzoic acid into the reactor, add 12.5g of 732 type strong acidic styrene cation exchange resin catalyst, protect with nitrogen, and react at 123-127°C until the acid value is less than 3. Cool down to room temperature, add 120g of cashew nut oil, stir evenly, add 44g of formic acid, stir and heat to 50-60°C, slowly add 260g of hydrogen peroxide with a concentration of 30wt% dropwise, finish dripping in 2h, and keep warm at 60°C for 5h, static Set the layers, separate the water phase and the cation exchange resin, and obtain the epoxidized phenol-containing mixed oil. Finally, add 20wt% sodium bisulfite aqueous solution prepared by 36g sodium bisulfite, and carry out sulfonation reaction at 70-80°C for 2-3h. The temperature was lowered to obtain about 540 g of the sulfonated intermediate.

Embodiment 2

[0029] In the sulfonated intermediate 270g obtained in Example 1, add 20# white mineral oil 75g, sulfonated oil 75g, chelating agent 25g, antioxidant 1076 0.3g, add alkali to adjust pH7.0, add water to adjust solid content 55%, A fatliquor with the function of removing formaldehyde is obtained.

Embodiment 3

[0031] In the sulfonated intermediate 270g obtained in Example 1, add 20# white mineral oil 70g, sulfonated oil 75g, chelating agent 30g, antioxidant 1076 0.4g, add alkali to adjust pH7.5, add water to adjust solid content 55%, A fatliquor with the function of removing formaldehyde is obtained.

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PUM

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Abstract

The invention provides a fatting agent with a formaldehyde removal function and a preparation method of the fatting agent. The fatting agent with the formaldehyde removal function is prepared from hydroxyl grease and cashew nut oil through esterification, epoxidation, sodium hydrogen sulfite sulfonation and compounding. By using a chemical method, a phenolic compound is subjected to self-emulsifying modification to obtain a leather chemical product with formaldehyde removal and fat liquoring functions. The preparation method is simple in process; and the fatting agent with the formaldehyde removal function, prepared by using the preparation method has a good formaldehyde removal effect and a good fat liquoring performance.

Description

technical field [0001] The invention belongs to the technical field of leather chemical industry, and in particular relates to a fatliquoring agent with the function of removing formaldehyde and a preparation method thereof. Background technique [0002] Formaldehyde is cheap and easy to obtain, and the cost performance is very high. Formaldehyde and its derivatives leather chemicals are widely used in tanning, such as tanning, straight hair fixing, anti-corrosion, coating and cross-linking, etc. Therefore, there may be more or less in leather products. There is a small amount of formaldehyde remaining, which has three binding methods with leather, mainly free formaldehyde molecules, reversible bonded and irreversible bonded formaldehyde molecules. Formaldehyde is a highly irritating and harmful gas, which is very harmful to the human body. Long-term exposure to low-dose formaldehyde can cause chronic respiratory diseases. In severe cases, it can cause physical decline, eas...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C14C9/02C11C3/00C11C3/04
CPCC11C3/00C11C3/006C11C3/04C14C9/02
Inventor刘勇余灯华张袁圆李滨李靖蔡冬源
Owner四川亭江新材料股份有限公司