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Complex enzyme water soaking agent for tanning

A compound enzyme preparation and water soaking agent technology, which is applied in the field of leather chemicals, can solve the problems of uneven water return and less fiber interstitial removal, and achieve the effects of shortening soaking time, speeding up removal, and reducing pollution

Active Publication Date: 2015-10-07
ANHUI LEVEKING BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the soaking aids used in traditional tanning are acids, alkalis, neutral salts, surfactants and other materials. These soaking aids have the defects of less removal of fiber interstitial and uneven return water, and a large amount of acid, alkali, Salt use is also one of the main sources of the most difficult neutral salt pollution in tannery wastewater

Method used

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  • Complex enzyme water soaking agent for tanning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 1.5 parts of Lvweikang Leveking-01 alkaline lipase at 10,000 international units / g, 1.5 parts of Lvweikang Leveking-PF01 alkaline protease at 50,000 international units / g, and green Mix 1.0 part of Weikang Leveking-001 glucoamylase, 1.0 part of A.S1.398 neutral protease of 50,000 international units / gram, and mix the above enzyme preparations evenly to obtain a compound enzyme preparation.

[0027] Weigh 1.0 parts of compound enzyme preparation, 2.0 parts of sodium lauryl sulfate, 5.0 parts of urea, 1.0 parts of sodium carbonate, 16 parts of cornstarch, 5.0 parts of sodium metapolyphosphate, and 10.0 parts of sodium sulfate, and mix them uniformly to obtain tanning Use compound enzyme water soaking agent. The enzyme activity of lipase in the composite enzyme soaking agent is 75 international units / g, the enzyme activity of protease is 625 international units / g, and the enzyme activity of glucoamylase is 250 international units / g.

[0028] The composite enzyme wat...

Embodiment 2

[0036] Weigh 5.0 parts of Lvweikang Leveking-01 alkaline lipase at 10,000 IU / g, 3.0 parts of 2709 alkaline protease at 50,000 IU / g, and Lvweikang Leveking-001 at 50,000 IU / g 1.0 part of glucoamylase, 1.0 part of 166 neutral protease of 50,000 international units / g, and the above enzyme preparations were evenly mixed to obtain a compound enzyme preparation.

[0037] Weigh 1.0 parts of compound enzyme preparation, 2.0 parts of sodium dodecylsulfonate, 8.0 parts of urea, 2.0 parts of sodium carbonate, 15 parts of cornstarch, 2.0 parts of kaolin, 2.0 parts of sodium metapolyphosphate, and 8.0 parts of sodium sulfate, and mix After uniformity, a compound enzyme water soaking agent for tanning is obtained. The enzyme activity of lipase in the composite enzyme water soaking agent is 125 international units / g, the enzyme activity of protease is 500 international units / g, and the enzyme activity of glucoamylase is 125 international units / g.

[0038] The compound enzyme water soaking a...

Embodiment 3

[0046] Weigh 3.0 parts of Lvweikang Leveking-01 alkaline lipase at 10,000 IU / g, 2.0 parts of Lvweikang Leveking-PF01 alkaline protease at 50,000 IU / g, and Lvweikang Leveking-PF01 alkaline protease at 50,000 IU / g Mix 2.0 parts of Weikang Leveking-001 glucoamylase, 3.0 parts of 166 neutral protease at 50,000 international units / g, and mix the above enzyme preparations evenly to obtain a compound enzyme preparation.

[0047] Weigh 1.0 parts of compound enzyme preparation, 1.0 parts of Remibond, 2.0 parts of urea, 1.0 parts of sodium carbonate, 8.0 parts of corn starch, 1.0 parts of sodium metapolyphosphate, 3.0 parts of diatomaceous earth, and 3.0 parts of sodium sulfate, and mix well A compound enzyme water soaking agent for tanning was obtained. The enzyme activity of lipase in the composite enzyme water soaking agent is 150 international units / g, the enzyme activity of protease is 1250 international units / g, and the enzyme activity of glucoamylase is 500 international units / g....

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Abstract

The invention discloses a compound-enzyme soaking agent used for leather making. The compound-enzyme soaking agent comprises following components by weight: 1 part of a compound enzyme preparation, 1-5 parts of a surfactant, 2-10 parts of urea, 1-5 parts of a pH regulator and 10-50 parts of a diluent. The compound-enzyme soaking agent is capable of accelerating grease decomposition and water penetration, accelerating removal of interfibrillar substances, shortening the soaking time, largely reducing the using amount of sodium chloride and the using amount of the surfactant, and significantly reducing pollution of neutral salts in the soaking processes of leather making.

Description

technical field [0001] The invention relates to the technical field of leather chemicals, in particular to a leather soaking agent containing a compound enzyme preparation. Background technique [0002] In the leather production process, soaking in water is the first process and also a key process. Due to the reasons of antisepsis and preservation, raw hides lose water to varying degrees. After dehydration, the fiber interstitium of the raw hide shrinks, and the collagen fibers are bonded together, which hinders the infiltration of water and chemicals, thereby affecting the quality of tanning processing. Sufficient backwater of raw leather will provide guarantee for chemical penetration and chemical reaction in the subsequent manufacturing process. The traditional tanning soaking process takes a long time. In order to speed up the soaking process and ensure that the whole hide is evenly soaked in water, it is usually necessary to add a soaking aid to promote soaking. Most...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C1/04C12N9/50C12N9/34C12N9/20
Inventor 王剑英程海明万晓军林智
Owner ANHUI LEVEKING BIOTECH CO LTD
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