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Carboxylated collagen foam stabilizers as well as preparation method and compound modifying method thereof

A technology of collagenization and collagen, applied in the field of carboxylated collagen foam stabilizer and its preparation, to achieve good application prospects, good foam stability and environmental friendliness

Active Publication Date: 2016-09-21
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country is a big country in the tanning industry, but the traditional tanning industry salt-wet leather can only produce finished leather accounting for 20% of the raw hide, and will produce solid waste of more than 60% of the raw hide

Method used

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  • Carboxylated collagen foam stabilizers as well as preparation method and compound modifying method thereof
  • Carboxylated collagen foam stabilizers as well as preparation method and compound modifying method thereof
  • Carboxylated collagen foam stabilizers as well as preparation method and compound modifying method thereof

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preparation example Construction

[0053] The preparation method and compound modification method of the above-mentioned carboxylated collagen foam stabilizer have the following reaction route:

[0054]

[0055] Hydrolyzed collagen has the following structure:

[0056]

[0057] Hydrolyzed collagen is amphiphilic and is a surface active substance, but its hydrophilicity is too strong, and its foaming and foam stabilization performance is not good, so it needs to be modified, and its hydrophobicity can be enhanced by adding hydrophobic groups surface activity. The hydrophobic group connected in the present invention is a long-chain aliphatic amine group, and the structural formula is as follows:

[0058]

Embodiment 1

[0060] Step 1: Preparation of hydrolyzed gelatin:

[0061] Make 20g dry weight of gelatin into an aqueous solution with a mass fraction of 10%, raise the temperature to 50°C, adjust the pH to 9 after the gelatin is completely dissolved, hydrolyze the gelatin with alkaline protease of 0.5% gelatin dry weight, react for 4 hours, and raise the temperature Heat to 90°C to inactivate the enzyme, and filter to obtain the hydrolyzed gelatin solution;

[0062] Step 2: Preparation of collagen foam stabilizer:

[0063] Add 3g of long-chain fatty amine to the hydrolyzed gelatin solution, and then add 1g of catalyst, stir and react at 30°C for 1h to prepare collagen foam stabilizer.

[0064] Step 3: Purification of collagen foam stabilizer:

[0065] After the reaction, use a rotary evaporator to remove water and unreacted long-chain fatty amines to obtain pure collagen foam stabilizer.

[0066] Step 4: Preparation of collagen compound modified foam stabilizer:

[0067] Add 0.2 g of so...

Embodiment 2

[0071] Step 1: Preparation of hydrolyzed gelatin:

[0072] Make 20g of dry weight gelatin into an aqueous solution with a mass fraction of 20%, raise the temperature to 50°C, adjust the pH to 8 after the gelatin is completely dissolved, and hydrolyze the gelatin with alkaline protease with a dry weight of 1.5% of the gelatin, and react for 2.5 hours. Raise the temperature to 90°C to inactivate the enzyme, and filter to obtain the hydrolyzed gelatin solution;

[0073] Step 2: Preparation of collagen foam stabilizer:

[0074] Add 6g of long-chain fatty amine to hydrolyzed gelatin solution, then add 3g of catalyst, stir and react at 40°C for 3h, and prepare collagen foam stabilizer.

[0075] Step 3: Purification of collagen foam stabilizer:

[0076] After the reaction, use a rotary evaporator to remove water and unreacted long-chain fatty amines to obtain pure collagen foam stabilizer.

[0077] Step 4: Preparation of collagen compound modified foam stabilizer:

[0078] Add 0....

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Abstract

The invention relates to carboxylated collagen foam stabilizers as well as a preparation method and a compound modifying method thereof. Waste leather contains a large amount of collagen and can be taken as a biomass resource. The preparation method comprises steps as follows: gelatin is compounded into an aqueous solution, pH is regulated after the gelatin is heated and dissolved, the gelatin is hydrolyzed by alkaline proteases, and a gelatin hydrolysate is obtained; long-chain aliphatic amine and a catalyst are added, and a collagen foam stabilizer is prepared through reaction; water and unreacted long-chain aliphatic amine are extracted out, and a pure collagen foam stabilizer is obtained; sodium dodecyl benzene sulfonate or lauryl sodium sulfate is added, and a compound foam stabilizer is obtained. The waste leather is recycled, a series of collagen foam stabilizers are synthesized according to difference of long-chain aliphatic amine, and the synthesized foam stabilizers have good foaming stability and environment friendliness. Therefore, the series of products have good application prospect.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a carboxylated collagen foam stabilizer, a preparation method and a compound modification method thereof. Background technique [0002] my country is a big country in the tanning industry, but the traditional tanning industry salt-wet leather can only produce finished leather accounting for about 20% of the raw hide, and will produce solid waste of more than 60% of the raw hide. Waste leather contains a large amount of collagen, which can be used as a biomass resource. Therefore, from an economic point of view, it is urgent to use leather waste as a resource to synthesize a green and biodegradable collagen foam stabilizer. Contents of the invention [0003] The purpose of the present invention is to provide a carboxylated collagen foam stabilizer and its preparation method and compound modification method, and to utilize leather waste as a resource to synthesize a collag...

Claims

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Application Information

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IPC IPC(8): B01F17/30C08H1/00C07K2/00C12P21/06C08L89/00C08K5/42C08K5/41C09K23/30
CPCC12P21/06C07K2/00C08H1/00C08K5/41C08K5/42C09K23/16
Inventor 王学川王琳任龙芳强涛涛
Owner SHAANXI UNIV OF SCI & TECH
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