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Collagen foaming agent, compound modified collagen foaming agent and their preparation methods

A collagen and foaming agent technology, which is applied in the field of fine chemicals and achieves good application prospects, good foaming stability and environmental friendliness.

Inactive Publication Date: 2016-05-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 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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  • Collagen foaming agent, compound modified collagen foaming agent and their preparation methods
  • Collagen foaming agent, compound modified collagen foaming agent and their preparation methods
  • Collagen foaming agent, compound modified collagen foaming agent and their preparation methods

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preparation example Construction

[0037] The preparation method of above-mentioned collagen foaming agent is realized by the following steps:

[0038] Step 1: Preparation of hydrolyzed gelatin:

[0039] Make gelatin with a dry weight of 20g into an aqueous solution with a mass fraction of 10%~30%, raise the temperature to 50°C, adjust the pH to 8~9 after the gelatin is completely dissolved, and use alkaline protease with a dry weight of 0.5%~3% of the gelatin Hydrolyze the gelatin, after reacting for 1h~4h, heat up to 90°C to inactivate the enzyme, and filter to obtain the hydrolyzed gelatin solution;

[0040] Step 2: Adjustment of the pH of the gelatin solution:

[0041] Adjust the hydrolyzed gelatin solution so that its pH reaches 9-10;

[0042] Step 3: Preparation of collagen foaming agent:

[0043] Add 0.5~3.0g of long-chain fatty acid chloride to the hydrolyzed gelatin solution, stir and react at 30~80°C for 1~6h, and prepare collagen egg foaming agent.

[0044] In step 1 and step 2, the pH adjustment...

Embodiment 1

[0050] Step 1: Preparation of hydrolyzed gelatin:

[0051] 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;

[0052] Step 2: Adjustment of the pH of the gelatin solution:

[0053] Adjust the hydrolyzed gelatin solution so that its pH reaches 9;

[0054] Step 3: Preparation of collagen foaming agent:

[0055] Add 3.0 g of long-chain fatty acid chlorides to the hydrolyzed gelatin solution, and stir and react at 30°C for 6 hours to prepare a foaming agent for collagen eggs;

[0056] Step 4: Preparation of collagen compound modified foaming agent:

[0057] Adding 0.05% sodium dodecylbenzene sulfonate based on the mass of the collagen foaming a...

Embodiment 2

[0062] Step 1: Preparation of hydrolyzed gelatin:

[0063] Make 20g dry weight of 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, hydrolyze the gelatin with alkaline protease with a dry weight of 1.5% 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;

[0064] Step 2: Adjustment of the pH of the gelatin solution:

[0065] Adjust the hydrolyzed gelatin solution so that its pH reaches 9;

[0066] Step 3: Preparation of collagen foaming agent:

[0067] Add 1.5 g of long-chain fatty acid chlorides to the hydrolyzed gelatin solution, stir and react at 55°C for 3 hours to prepare a foaming agent for collagen eggs;

[0068] Step 4: Preparation of collagen compound modified foaming agent:

[0069] Adding 0.30% sodium dodecylbenzene sulfonate based on the mass of the collagen foaming a...

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Abstract

The invention relates to a collagen foaming agent, a compound modified collagen foaming agent and their preparation methods. The preparation method of the collagen foaming agent comprises preparing a gelatin aqueous solution, carrying out heating dissolution, adjusting pH and carrying out alkali protease hydrolysis to obtain a hydrolyzed gelatin solution, adjusting pH of the hydrolyzed gelatin solution, adding long-chain fatty acid chloride into the solution and carrying out a stirring reaction process to obtain the collagen foaming agent. The preparation method of the compound modified collagen foaming agent comprises adding sodium dodecyl benzene sulfonate or Arabic gum into the collagen foaming agent so that the collagen foaming agent is subjected to physical compound modification and forms the compound modified collagen foaming agent. The novel collagen foaming agent is prepared through the reaction of the long-chain fatty acid chloride and collagen. Through physical compound modification of the novel collagen foaming agent, leather waste resource utilization is realized. The invention provides the collagen foaming agents with excellent performances.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a collagen-based foaming agent, its compounded modified foaming agent and a preparation method of the two. Background technique [0002] The protein foaming agent has excellent performance, especially good foam stability, and the foam durability can reach more than 24 hours, and it is made of collagen in waste leather, which is easy to biodegrade, mild to the human body, and The environment is non-polluting, so the synthesis and performance research of collagen-based foaming agents have received extensive attention in recent years. [0003] 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 bioma...

Claims

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Application Information

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IPC IPC(8): C12P21/06
CPCC12P21/06
Inventor 王学川王琳任龙芳强涛涛
Owner SHAANXI UNIV OF SCI & TECH
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