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Composite lipase degreasant and application

A technology of lipase degreasing agent and compound lipase, which is applied in the field of leather degreasing, can solve the problems of low degree of oil hydrolysis and poor degreasing effect in the leather, and achieve the effect of mild action, improved degradation degree and efficient degreasing

Active Publication Date: 2017-01-25
SICHUAN DOWELL SCI & TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lipase preparations currently on the market do not have a high degree of hydrolysis of intradermal oils, and the degreasing effect is relatively poor.

Method used

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  • Composite lipase degreasant and application
  • Composite lipase degreasant and application
  • Composite lipase degreasant and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Table 1 is the water immersion process condition in embodiment 1, wherein the consumption percentage of auxiliary agent and water is based on the quality of skin. According to the method shown in Table 1, the sheepskin and the pigskin (the weight of the skin is 100kg) were soaked in water respectively to obtain the soaked sheepskin and the soaked pigskin respectively.

[0045] For the animal hides soaked in water, the meat is removed by a meat remover the next day for degreasing after soaking in water.

[0046] The water immersion process condition in the embodiment 1 of table 1

[0047] process Materials used Dosage% time (minutes) Remark presoaked water room temperature water 500 soda ash 0.3 DOWELLAN FG-C 0.2 DOWELLLIT FMN 0.2 20 Stop for 40 minutes, 3 times soaking normal temperature water 400 soda ash 0.5 DOWELLLAN SPH 0.2 DOWELLAN FG-C 0.3 DOWELLL...

Embodiment 2

[0049] Table 2 is the liming and deliming process conditions in Example 2, wherein the consumption percentage of auxiliary agent and water is based on the quality of skin. According to the method shown in Table 2, the sheep skin (the weight of the skin is 100kg) is carried out liming and deliming to obtain the sheep skin after liming and deliming.

[0050] Liming and deliming process conditions in table 2 embodiment 2

[0051]

[0052]

Embodiment 3

[0054] Sheep skin degreased after soaking in water

[0055] Take 15kg of lipase GL100 sold by Novozymes with an optimum pH value of 6.5-8.5 and an enzyme activity of 50,000 units / g; an optimum pH value of 6.5-11 and an enzyme activity of 50,000 units / g Lipase Ultra G 5kg sold by Novozymes; AEO-9 5kg; Pinpinga O 10kg; Calcium Chloride 2kg; Dipotassium Hydrogen Phosphate 5kg; Enzyme degreaser.

[0056] Get 100 kg of sheepskin after soaking in water and removing the flesh in Example 1, add to the drum, then add 200 kg of water, adjust the temperature to 40 ° C, add 3 kg of the compound lipase degreasing agent prepared, rotate for 60 minutes, drain; then add 200 kg of temperature It is the water of 40 ℃, rotates after 10 minutes, drains water, takes out skin embryo.

[0057] Sampling was carried out to measure the residual oil content in the skin embryo, and the degreasing rate of the compound lipase degreasing agent was calculated, as shown in Table 3, which is the degreasing e...

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Abstract

Relating to the technical field of leather degreasing, the invention provides a composite lipase degreasant and application. The composite lipase degreasant is prepared from, by weight, 15-25 parts of lipase and 10-15 parts of surfactant. The lipase is neutral lipase or alkali lipase; the surfactant is a sulfonate surfactant, polyoxyethylene ether surfactant or or a plurality of sulfonate surfactants and polyoxyethylene ether surfactants. The composite lipase degreasant and application, by synergistic effects of the lipase and surfactant, enhances the degradation of lipase to grease and makes intracutaneous grease easily eluted from crust so as to reach highly efficient degreasing effects. Applicable to degreasing all kinds of animal skins, such as pigskin, sheepskin, goat skin and buffalo hide, the composite lipase degreasant and application has mild skin effects, which is economical, eco-friendly and applicable to degreasing in different procedures.

Description

technical field [0001] The invention relates to the technical field of leather degreasing, in particular to a compound lipase degreasing agent and application thereof. Background technique [0002] Leather usually refers to animal skin that has been denatured and not perishable after physical and chemical processing such as depilation and tanning; leather is composed of natural protein fibers tightly woven in three-dimensional space, and its surface has a special grain layer, which has Natural grain and luster, comfortable to touch. The process of processing raw hides into leather mainly includes three stages: preparation, tanning and finishing; among them, the preparation stage includes processes such as soaking in water, fleshing, liming and dehairing, softening and pickling, so that the raw hides are in a state ready for tanning. The tanning stage is the qualitative change stage of converting raw hides into leather, making perishable hides into non-perishable leather. T...

Claims

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Application Information

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IPC IPC(8): C14C5/00
CPCC14C5/00
Inventor 梁亮杨斯盛严建林
Owner SICHUAN DOWELL SCI & TECH INC
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