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Preparation method of sulphonating succinate ester disodium salt combined leather currying agent

A technology of sulfonated succinate and leather fatliquor, which is 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 effective substances Low content, difficult water emulsification, poor lightfastness of fatliquored leather, etc., to achieve good smoothness, clean production process, and good lightfastness

Active Publication Date: 2008-07-16
WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The appearance of the product prepared by this process is yellow, thick slurry, and the content of effective substances is low; the product produced by this process is difficult to emulsify in water, and the 1:9 water emulsion will swell after being placed for 24 hours, and the product itself Grease will be precipitated on the upper layer during storage, and fatliquored leather has poor light resistance

Method used

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  • Preparation method of sulphonating succinate ester disodium salt combined leather currying agent
  • Preparation method of sulphonating succinate ester disodium salt combined leather currying agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 40.0g lanolin alcohol containing hydroxyl, 30.0g castor oil and 30.0g special rapeseed oil fatty acid acyldiethanolamine to a dry three-necked flask, raise the temperature to 65°C, stir evenly, add 22.0g maleic anhydride in batches, and then Raise the temperature to 88°C for esterification, react for 2.5h~3.0h, cool down to 70°C, add 29.42g of anhydrous sodium sulfite to it, then add 121.83g of hot water at 65°C~75°C, raise the temperature to 80°C for 120min, cool down to 45°C ℃~50℃, the sulfosuccinate disodium salt combined leather fatliquoring agent can be obtained after discharge. The appearance of the fatliquoring agent is yellow ointment, and the softness of the fatliquor leather is good.

Embodiment 2

[0033] Add 45.0g of lanolin alcohol containing hydroxyl, 30.0g of castor oil and 25.0g of special rapeseed oil fatty acid acyldiethanolamine to a dry three-necked flask, raise the temperature to 65°C, stir evenly, add 28.0g of maleic anhydride in batches, and then Raise the temperature to 90°C for esterification, react for 2.5h~3.0h, cool down to 70°C, add 37.8g of anhydrous sodium sulfite to it, then add 121.83g of hot water at 65°C~75°C, raise the temperature to 80°C for 150min, cool down to 45°C ℃~50℃, the sulfosuccinate disodium salt combined leather fatliquoring agent can be obtained after discharge. The appearance of the fatliquoring agent is yellow-white paste, and the fatliquoring leather has a strong waxy feeling, good filling performance, good light resistance and strong binding ability.

Embodiment 3

[0035] Add 46.0g lanolin alcohol containing hydroxyl group, 28.0g castor oil and 26.0g special rapeseed oil fatty acid acyldiethanolamine to a dry three-necked flask, heat up to 65°C, stir evenly, add 24.0g maleic anhydride in batches, and then Raise the temperature to 92°C for esterification, react for 3.0h to 3.5h, cool down to 70°C, add 32.4g of anhydrous sodium sulfite to it, then add 132.94g of hot water at 65°C to 75°C, raise the temperature to 82°C for 100min, cool down to 45°C ℃~50℃, the sulfosuccinate disodium salt combined leather fatliquoring agent can be obtained after discharge. The appearance of the fatliquoring agent is yellow-white paste, and the fatliquoring leather has a strong waxy feeling, good filling property and good light fastness.

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Abstract

The invention provides a sulfonated succinate disodium salt combination type leather greasing agent preparing method. It includes the following steps: using lanonol contains hydroxyl, special colza oil fat acyl diethanolamine and castor oil as material; forming butene diacid monoester; sulfonation by anhydrous sodium sulfite. The out look of the greasing agent is faint yellow ointment shape. It will not stratify for six months while storing at room temperature, 1:9 water miscible liquid for 24h without floating oil. The produced greasing leather has the advantages of flattening, smooth surface, and good light fastness.

Description

technical field [0001] The invention belongs to the technical field of leather chemical industry, and in particular relates to a preparation method of a sulfosuccinate disodium salt combined leather fatliquoring agent. Background technique [0002] Leather fatliquor has an important influence on the performance of the finished leather. It can penetrate into the collagen fibers of the leather, lubricate and plasticize the leather fibers, make the collagen molecular chains and segments easy to move, and the resulting leather is soft and smooth. Waterproof, sunscreen, moisturizing and elastic. Combined fatliquoring agent is a kind of leather fatliquoring agent product with excellent performance, because its molecular structure contains active groups such as amide group, carboxyl group and sulfonic acid group, it can be combined with active groups on leather collagen fibers such as amino, Hydroxyl and chromium form a variety of chemical bonds, such as ionic bonds, hydrogen bond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02
Inventor 兰云军柴玉叶鲍利红罗卫平邹祥龙银德海
Owner WENZHOU UNIV
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