Method for preparing collagen polypeptide based surfactant

A technology based on surfactants and collagen polypeptides, which is applied in the field of preparation of protein-based surfactants, can solve the problems of decreased product solubility, low yield of active ingredients, and decreased emulsifying performance, so as to reduce the total cost and reduce waste disposal. Pressure, good emulsifying effect

Active Publication Date: 2015-09-23
烟台全杰技术产业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, experimental analysis found that the yield of active ingredients in the synthetic product was low, only about 58.16%, and

Method used

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  • Method for preparing collagen polypeptide based surfactant
  • Method for preparing collagen polypeptide based surfactant
  • Method for preparing collagen polypeptide based surfactant

Examples

Experimental program
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example 1

[0017] (1) Mix 50g of waste leather shavings with 500ml of water, add 4g of sodium hydroxide and 0.5g of 2-phosphonic acid butane-1,2,4-tricarboxylic acid sodium salt, in an environment of 100°C After hydrolyzing for 10 hours, the unhydrolyzed leather residue was removed by filtration, and the resulting hydrolyzed solution was concentrated under reduced pressure to make the Baume degree reach 18.

[0018] (2) Take 40ml of oleic acid and dehydrate it in an oven for half an hour, then cool it to room temperature in a desiccator. Pour the cooled dehydrated oleic acid into a three-necked beaker, then slowly add 10ml of phosphorus trichloride dropwise under the environment of 50°C, and stir well. After 1 hour of reaction, the temperature was raised to 65° C., and the aging reaction was performed for 2 hours. After the reaction is completed, pour the product into a separatory funnel, let it stand overnight to separate layers, remove the phosphorous acid in the lower layer, and remo...

example 2

[0022] (1) Mix 60g of waste leather shavings with 600ml of water, add 4.8g of sodium hydroxide and 0.6g of 2-phosphonic acid butane-1,2,4-tricarboxylic acid sodium salt, Hydrolyze in an environment of 100° C. for 10 hours, remove leather residues that have not been hydrolyzed by filtration, and concentrate the obtained hydrolyzate under reduced pressure to make the Baume degree reach 18.

[0023] (2) Take 40ml of oleic acid and dehydrate it in an oven for half an hour, then cool it to room temperature in a desiccator. Pour the cooled dehydrated oleic acid into a three-necked beaker, then slowly add 10ml of phosphorus trichloride dropwise under the environment of 50°C, and stir well. After 60 minutes of reaction, the temperature was raised to 65° C., and the aging reaction was performed for 2 hours. After the reaction is completed, pour the product into a separatory funnel, let it stand overnight to separate layers, remove the phosphorous acid in the lower layer, and remove th...

example 3

[0027] (1) Mix 80g of waste leather shavings with 800ml of water, add 6.4g of sodium hydroxide and 0.8g of 2-phosphonic acid butane-1,2,4-tricarboxylic acid sodium salt, at 100°C It was hydrolyzed in the environment for 10 hours, and the unhydrolyzed leather residue was removed by filtration, and the resulting hydrolyzed solution was concentrated under reduced pressure to reach a Baume degree of 18.

[0028] (2) Take 40ml of oleic acid and dehydrate it in an oven for half an hour, then cool it to room temperature in a desiccator. Pour the cooled dehydrated oleic acid into a three-necked beaker, then slowly add 10ml of phosphorus trichloride dropwise under the environment of 50°C and stir well. After 60 minutes of reaction, the temperature was raised to 65° C., and the aging reaction was performed for 2 hours. After the reaction is completed, pour the product into a separatory funnel, let it stand overnight to separate layers, remove the phosphorous acid in the lower layer, an...

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Abstract

The invention relates to a method for preparing a collagen polypeptide based surfactant. The method comprises the steps: hydrolyzing leather scraps with a strongly-alkaline solution of sodium hydroxide, then, filtrating a hydrolysis solution to remove chromium-containing filtrated residue, and carrying out reduced-pressure distillation on the filtrate so as to obtain a protein hydrolyzate; mixing oleoyl chloride and n-hexane according to a certain ratio, slowly dropwise adding the mixture into the concentrated protein hydrolyzate cooled by ice water, reacting for 20-30 minutes, and then, heating the reacted mixture to the temperature of 20-30 DEG C for aging reaction; after the reaction ends, heating the reaction solution to the temperature of 50-60 DEG C so as to remove part of n-hexane; and pouring out the reaction product, and carrying out centrifugal separation on the reaction product to remove a byproduct sodium oleate and superfluous n-hexane solvent, thereby obtaining the collagen polypeptide based surfactant. According to the method, the high-yield efficient protein based surfactant prepared from chromium-containing leather waste, which serves as a main raw material, can be applied to a leather making process again as a degreasing agent, so that not only is the resource utilization of the waste realized, but also the total cost of chemical raw materials for leather making enterprises is reduced.

Description

technical field [0001] The invention relates to a preparation method of a surfactant, in particular to a preparation method of a protein-based surfactant, and the prepared surfactant is mainly used as a degreasing agent for a leather-making process. Background technique [0002] Chrome leather shavings mainly come from chrome-containing leather scraps in tanneries. According to statistics, my country's tanning enterprises produce more than 1.4 million tons of leather solid waste every year. Because of the chromium content, these wastes are often treated as industrial pollutants. How to rationally utilize this waste resource is gradually becoming the focus of scientific and technological workers in related fields. Using the collagen polypeptide in the chrome leather shavings hydrolyzate as the hydrophilic group, reacting with oleoyl chloride to form a protein-based surfactant, and reapplying the protein-based surfactant as a degreasing agent to the tanning process is an eff...

Claims

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Application Information

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IPC IPC(8): B01F17/30C07K14/78C07K1/107C09K23/30
Inventor 王全杰魏星星张萌萌张文斌苏立清韩金永段宝荣王晓龙
Owner 烟台全杰技术产业有限公司
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