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Amphoteric wool grease leather fatliquoring agent and preparation method thereof

A technology of leather fatliquor and lanolin, applied in leather impregnation, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., can solve the problem of discoloration and performance Improve unsatisfactory effect, poor compatibility and other problems, achieve soft surface greasy feeling, improve dye uptake rate, and good application performance

Inactive Publication Date: 2010-10-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an amphoteric lanolin leather fatliquoring agent and its preparation method to overcome the discoloration, poor compatibility and performance improvement in the prior art Problems with unsatisfactory results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An amphoteric lanolin leather fatliquoring agent is prepared by the following method:

[0022] 1. Lanolin amidation reaction: first mix lanolin and monoethanolamine at a molar ratio of 1:1, react at 150°C for 3 hours, then add 0.9% of the total mass of lanolin and monoethanolamine at a concentration of 54% The sodium methylate is carried out alkaline catalysis to make amidated lanolin;

[0023] 2. Condensation reaction of amidated lanolin and sodium chloroacetate: mix amidated lanolin and sodium chloroacetate according to the molar ratio of hydroxyl group in amidated lanolin to sodium chloroacetate is 1:1, and react at 130°C After 2 hours, after the reaction is completed, cool to 40°C, add an appropriate amount of water and dilute hydrochloric acid to make the solid content 50%, and the pH is 7-8.

[0024] 3. Take the following raw materials in parts by mass, mix and heat to 40°C, keep warm and stir for 35 minutes to make the oil phase mix evenly: 30 parts of the produ...

Embodiment 2

[0027] A kind of amphoteric lanolin leather fatliquoring agent is made by following method:

[0028] 1. Lanolin amidation reaction: first mix lanolin and diethanolamine at a molar ratio of 1:0.6, react at 90°C for 2 hours, then add 0.6% of the total mass of lanolin and diethanolamine at a concentration of 70% Alkaline catalyzed sodium hydroxide is used to make amidated lanolin;

[0029] 2. Condensation reaction of amidated lanolin and sodium chloroacetate: mix the hydroxyl group in amidated lanolin with sodium chloroacetate at a molar ratio of amidated lanolin and sodium chloroacetate of 1:0.8, and react at 90°C for 6 Hours; after the reaction is completed, cool to 45°C, add an appropriate amount of water and dilute hydrochloric acid to make the solid content 60%, and pH 7-8.

[0030] 3. Take the following raw materials in parts by mass, mix and heat to 50°C, keep warm and stir for 25 minutes to make the oil phase mix evenly: 10 parts of the product in step 2, 8 parts of synt...

Embodiment 3

[0033] A kind of amphoteric lanolin leather fatliquoring agent is made by following method:

[0034] 1. Lanolin amidation reaction: first mix lanolin and triethanolamine at a molar ratio of 1:0.8, react at 90°C for 2 hours, then add 0.6% of the total mass of lanolin and triethanolamine at a concentration of 70% Alkaline catalyzed sodium hydroxide is used to make amidated lanolin;

[0035] 2. Condensation reaction of amidated lanolin and sodium chloroacetate: mix hydroxyl groups in amidated lanolin with sodium chloroacetate at a ratio of 1:0.8 molar ratio of amidated lanolin to sodium chloroacetate, and react at 100°C for 5 Hours; after the reaction is completed, cool to 45°C, add an appropriate amount of water and dilute hydrochloric acid to make the solid content 55%, and the pH is 7-8;

[0036] 3. Mix and heat the following raw materials in parts by mass to 55°C, keep warm and stir for 30 minutes to make the oil phase mix evenly: 15 parts of the product of step 2, 6 parts o...

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Abstract

The invention relates to an amphoteric wool grease leather fatliquoring agent and a preparation method thereof. At present, the existing wool grease modifying mode is mainly modification reaction based on hydroxy in wool grease, has direct influence on the quality of leather-making and fur products and has non-ideal effect on the improvement of performance. The amphoteric wool grease leather fatliquoring agent and the preparation method thereof comprise the steps of wool grease amidation reaction, condensation reaction of amidated wool grease and sodium chloroacetate in sequence, specificallytaking down materials in parts by weight for mixing, heating to 40-60 DEG C, insulating and stirring for 25-35min to lead oil phases to be mixed uniformly, then mixing 15-20 parts of water, 0.8-1.2 parts of penetrating agent JFC, 4-6 parts of Tween-80, heating the mixture to be 60-70 DEG C, then adding the obtained mixture into a product of step 3 by times, continuing to heat and stir for 15-25min and discharging. The invention is environment-friendly, has wide application range and simultaneously and greatly improves leather property.

Description

technical field [0001] The invention relates to an amphoteric lanolin leather fatliquoring agent and a preparation method thereof. Background technique [0002] Raw lanolin is viscous and unsuitable for application. It is hard, has a high melting point, and has a fishy smell, so its use is limited. To improve the application performance of lanolin, other active groups such as -COO, -PO must be introduced into lanolin molecules through chemical reactions 4 , -NH 2 etc., making it a surfactant with an amphiphilic structure, improving emulsifying ability, and meeting the needs of emulsion fatliquoring. At present, the existing lanolin modification methods are mainly based on the modification reaction of hydroxyl groups in lanolin, such as: polyoxyethylene etherification (ethylene oxide) of lanolin, acetylation of lanolin, maleic anhydride of lanolin , lanolin phosphorylation, etc. Most of the lanolin fatliquoring agents modified in the above manner are anionic products, whi...

Claims

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Application Information

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IPC IPC(8): C14C9/02
Inventor 罗晓民冯见艳解星李鹏妮
Owner SHAANXI UNIV OF SCI & TECH
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