CN111592941A - Composite biological degreasing agent and application thereof - Google Patents
Composite biological degreasing agent and application thereof Download PDFInfo
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- CN111592941A CN111592941A CN202010487551.0A CN202010487551A CN111592941A CN 111592941 A CN111592941 A CN 111592941A CN 202010487551 A CN202010487551 A CN 202010487551A CN 111592941 A CN111592941 A CN 111592941A
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- degreasing
- degreasing agent
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Classifications
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/008—Polymeric surface-active agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/046—Salts
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/166—Organic compounds containing borium
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2041—Dihydric alcohols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/34—Organic compounds containing sulfur
- C11D3/349—Organic compounds containing sulfur additionally containing nitrogen atoms, e.g. nitro, nitroso, amino, imino, nitrilo, nitrile groups containing compounds or their derivatives or thio urea
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
- C11D3/38627—Preparations containing enzymes, e.g. protease or amylase containing lipase
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C5/00—Degreasing leather
Abstract
The invention provides a composite biological degreasing agent and application thereof, and relates to the technical field of leather degreasing. The composite biological degreasing agent comprises the following components in parts by weight: 15-35 parts of acid lipase; and 10-25 parts of a surfactant. The composite biological degreasing agent disclosed by the invention mainly uses the acid lipase, can utilize the oil degrading effect of the acid lipase under an acid condition and the emulsifying effect of the surfactant, and plays a synergistic effect of biological degreasing and chemical degreasing when performing supplementary degreasing treatment on acid leather and wet blue leather, so that the aim of efficiently degreasing under the acid condition is fulfilled, and thus, the blank of the acid leather or wet blue leather and the like can meet the requirement of subsequent tanning processing.
Description
Technical Field
The invention relates to the technical field of leather degreasing, in particular to a composite biological degreasing agent and application thereof.
Background
The leather is animal skin which is obtained by physical and chemical processing such as unhairing, tanning and the like and is denatured and non-perishable. Degreasing is an essential process for processing leather or fur, and only natural grease contained in animal pelts is removed to a certain degree, the collagen fibers in the leather can be loosened, so that favorable conditions are created for smooth proceeding of various processes such as subsequent tanning and the like. However, for animal skins rich in oil, such as sheep skins, pigskins and the like, which have a large oil content, previous degreasing treatment usually cannot completely degrease, so that a large amount of unremoved oil is still contained in an embryo of the pickled skins and wet blue skins, and if the degreasing is not performed, the tanning processing quality is poor, such as the problems of oil frost on the surface of the leather, uneven dyeing and the like, so that the pickled skins and wet blue skins need to be subjected to the additional degreasing under an acidic condition.
The applicant has found that the prior art has at least the following technical problems: at present, a method for treating a leather blank in a sour leather and wet blue leather state is to use a large amount of surfactant for degreasing, but the large amount of surfactant used in the leather making process has great influence on environmental pollution. The lipase preparation adopted in the prior leather making is mainly degreased under neutral and alkaline conditions, and is not suitable for acid leather and wet blue leather. Although the acid lipase can meet the requirement of performing supplementary degreasing treatment on acid skins and wet blue skins under an acidic condition, the degreasing rate of the acid lipase used alone is not high.
Disclosure of Invention
In view of the above, the present invention aims to provide a composite biological degreasing agent and an application thereof. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a composite biological degreasing agent which comprises the following components in parts by weight:
15-35 parts of acid lipase; and
10-25 parts of a surfactant.
According to a preferred embodiment, the surfactant is a nonionic surfactant.
According TO a preferred embodiment, the nonionic surfactant is selected from the group consisting of basf TO-8 nonionic surfactants or basf XL90 nonionic surfactants or AEO-9 nonionic surfactants.
According to a preferred embodiment, the complex biological degreasing agent further comprises the following components in parts by weight:
0.1-1 part of enzyme activating property;
6-15 parts of an enzyme stabilizer;
1-5 parts of a pH stabilizer; and
0.1 part of preservative and the balance of water.
According to a preferred embodiment, the enzyme activator is selected from calcium chloride.
According to a preferred embodiment, the enzyme stabilizer comprises propylene glycol and 4-formylphenylboronic acid, wherein the propylene glycol and the 4-formylphenylboronic acid account for the following parts by weight in the composite biological degreasing agent: 5-10 parts of propylene glycol; 1-5 parts of 4-formylphenylboronic acid.
According to a preferred embodiment, the pH stabilizer is selected from sodium citrate or sodium tripolyphosphate.
According to a preferred embodiment, the preservative is selected from cason or BIT 20.
The invention also provides an application of the composite biological degreasing agent, which comprises the step of degreasing the pickled or blue wet skin.
According to a preferred embodiment, the application further comprises that the complex biological degreasing agent degreases pickled or wet blue skins under acidic conditions.
Based on the technical scheme, the composite biological degreasing agent and the application thereof at least have the following technical effects:
the compound biological degreasing agent mainly comprises 15-35 parts of acid lipase and 10-25 parts of surfactant, and the acid lipase is mainly used, so that the synergistic effect of biological degreasing and chemical degreasing can be exerted when supplementary degreasing treatment is carried out on acid skins and wet blue skins by utilizing the grease degrading effect of the acid lipase under an acid condition and the emulsifying effect of the surfactant, the purpose of efficient degreasing under the acid condition is achieved, and the blank of the acid skins or the wet blue skins meets the requirements of subsequent tanning processing.
On the other hand, the composite biological degreasing agent provided by the embodiment of the invention takes the surfactant as an auxiliary material, and reduces the dosage of the surfactant compared with a degreasing treatment method adopting a large amount of surfactant, thereby reducing the pollution to the environment in the leather treatment process.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention provides a composite biological degreasing agent, which comprises the following components in parts by weight:
15-35 parts of acid lipase; and
10-25 parts of a surfactant.
Preferably, the surfactant is a nonionic surfactant.
The acid lipase is a lipase which can stably and efficiently carry out the hydrolysis reaction of the grease in an acid environment. The composite biological degreasing agent disclosed by the invention takes acid lipase as a main component and takes a nonionic surfactant as an auxiliary component, redundant grease in acid skins or wet blue skins can be efficiently removed under an acidic condition, and compared with a large amount of surfactant used for degreasing treatment in the composite biological degreasing, the dosage of the surfactant is reduced. The applicant finds through experiments that the dosage of the nonionic surfactant in the composite biological degreasing agent can be relatively reduced by 25% -45% when the same degreasing effect is achieved compared with a degreasing process adopting the surfactant.
Preferably, the nonionic surfactant is selected from the group consisting of basf TO-8 nonionic surfactant or basf XL90 nonionic surfactant or AEO-9 nonionic surfactant. Preferably, the basf TO-8 nonionic surfactant, the basf XL90 nonionic surfactant, and the AEO-9 nonionic surfactant are all provided by basf (china) ltd.
Preferably, the composite biological degreasing agent further comprises the following components in parts by weight:
0.1-1 part of enzyme activating property; preferably, the enzyme activator is selected from calcium chloride.
6-15 parts of an enzyme stabilizer; preferably, the enzyme stabilizer comprises 5-10 parts of propylene glycol; 1-5 parts of 4-formylphenylboronic acid.
1-5 parts of a pH stabilizer; preferably, the pH stabilizer is selected from sodium citrate or sodium tripolyphosphate.
0.1 part of preservative, preferably, the preservative is selected from the group consisting of cason or BIT 20.
The balance of water.
The invention also provides an application of the composite biological degreasing agent, which comprises the step of degreasing the pickled or blue wet skin. Preferably, the complex biological degreasing agent degreases sour skins or wet blue skins under acidic conditions. Preferably, the complex biological degreaser of the present invention is suitable for acidic conditions with a pH of 3.5-4.0.
In order to further illustrate the technical solution of the present invention, the following embodiments are specifically described.
Example 1
The preparation process of the composite biological degreasing agent in the embodiment 1 is as follows:
the composite biological degreasing agent in the embodiment 1 comprises the following components in parts by weight:
20 parts of acid lipase;
nonionic surfactant: basff TO-820 parts;
enzyme activator: 0.1 part of calcium chloride;
enzyme stabilizer: 8 parts of propylene glycol and 2.5 parts of 4-formylphenylboronic acid (4-FPBA);
pH stabilizer: 4.5 parts of sodium citrate;
preservative: 0.1 part of kasong;
the balance of water.
The components are mixed evenly to obtain the composite biological degreasing agent mainly containing the acid lipase in the embodiment 1.
Table 1 shows the application of the complex biological degreasing agent prepared in this example 1 and the market product 1 as comparative experiments to the degreasing process of grease-rich wet sheep blue. The product 1 is prepared from a Darween FG-E nonionic degreasing agent produced by Darween corporation, wherein the content of the surfactant in the selected Darween FG-E is 50%. The amounts of the auxiliaries and water are based on the weight of the wet blue hide.
TABLE 1
Table 2 shows the spent liquor degreasing ratio in the two comparative processes.
TABLE 2
| Item | Market products 1 | Example 1 |
| Defatting rate/%) | 37.01％ | 48.23％ |
From the above results, it can be seen that the degreasing rate of the complex biological degreasing agent prepared in the example 1 on blue wet skin is obviously higher than that of the product 1 in the market.
Example 2
The preparation process of the composite biological degreasing agent in the embodiment 2 is as follows:
the composite biological degreasing agent of the embodiment 2 comprises the following components in parts by weight:
25 parts of acid lipase;
nonionic surfactant: basf XL-9020 parts;
enzyme activator: 0.15 part of calcium chloride;
enzyme stabilizer: propylene glycol 8.5, 4-formylphenylboronic acid (4-FPBA)3.0 parts;
pH stabilizer: 5 parts of sodium citrate;
preservative: 0.1 part of kasong;
the balance of water.
The components are uniformly mixed to obtain the composite biological degreasing agent mainly containing the acid lipase in the embodiment 2.
Table 3 shows the application of the composite biological degreasing agent prepared in this example 2 and the market product 2 as comparative experiments to the degreasing process of grease-rich wet sheep blue. The market product 2 is prepared from a Darween FG-FU nonionic degreasing agent produced by Darween corporation, wherein the content of a surfactant in the selected Darween FG-FU is 60%. The amounts of the auxiliaries and water are based on the weight of the wet blue hide.
TABLE 3
Table 4 shows the spent liquor degreasing ratio in the two comparative processes.
TABLE 4
| Item | Market products 2 | Example 2 |
| Defatting rate/%) | 41.25％ | 54.01％ |
From the above results, it can be seen that the degreasing rate of the complex biological degreasing agent prepared in the embodiment 2 on blue wet skin is significantly higher than that of the product 2 in the market.
Example 3
The preparation process of the composite biological degreasing agent in the embodiment 3 is as follows:
the composite biological degreasing agent of the embodiment 3 comprises the following components in parts by weight:
15 parts of acid lipase;
nonionic surfactant: basf AEO-925 parts;
enzyme activator: 0.1 part of calcium chloride;
enzyme stabilizer: 2.0 parts of propylene glycol 7.5, 4-formylphenylboronic acid (4-FPBA);
pH stabilizer: 4 parts of sodium citrate;
preservative: 0.1 part of kasong;
the balance of water.
The components are uniformly mixed to obtain the composite biological degreasing agent mainly containing the acid lipase in the embodiment 3.
Table 5 shows the application of the complex biological degreasing agent prepared in this example 3 and the market product 3 as comparative experiments to the degreasing process of grease-rich wet sheep blue. The market product 3 is the dabulan FG-C non-ionic degreasing agent produced by the dabulan corporation, wherein the content of the surfactant in the selected dabulan FG-C is 40%. The amounts of the auxiliaries and water are based on the weight of the wet blue hide.
TABLE 5
Table 6 shows the spent liquor degreasing ratio in the two comparative processes.
TABLE 6
| Item | Market products 3 | Example 3 |
| Defatting rate/%) | 33.65％ | 42.37％ |
From the above results, it can be seen that the degreasing rate of the complex biological degreasing agent prepared in the embodiment 3 on blue wet skin is obviously higher than that of the product 3 in the market.
The embodiment shows that the compound biological degreasing agent can efficiently degrease the sheep blue wet skin rich in grease through the synergistic action of the acid lipase and the nonionic surfactant, can effectively solve the degreasing treatment process of the animal skin rich in grease in the acid skin or blue wet skin state, and is economic and environment-friendly.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The composite biological degreasing agent is characterized by comprising the following components in parts by weight:
15-35 parts of acid lipase; and
10-25 parts of a surfactant.
2. The complex biological degreaser of claim 1 wherein the surfactant is a non-ionic surfactant.
3. The complex biological degreaser of claim 2, wherein the non-ionic surfactant is selected from basf TO-8 or basf XL90 or AEO-9.
4. The complex biological degreasing agent as recited in claim 1, wherein the complex biological degreasing agent further comprises the following components in parts by weight:
0.1-1 part of enzyme activating property;
6-15 parts of an enzyme stabilizer;
1-5 parts of a pH stabilizer; and
0.1 part of preservative and the balance of water.
5. The complex biological degreaser of claim 4 wherein the enzyme activator is selected from calcium chloride.
6. The complex biological degreasing agent as recited in claim 4, wherein the enzyme stabilizer comprises propylene glycol and 4-formylphenylboronic acid, wherein the propylene glycol and the 4-formylphenylboronic acid account for the following weight parts in the complex biological degreasing agent: 5-10 parts of propylene glycol; 1-5 parts of 4-formylphenylboronic acid.
7. The complex biological degreaser of claim 4, wherein the pH stabilizer is selected from sodium citrate or sodium tripolyphosphate.
8. The complex biological degreaser of claim 4 wherein the preservative is selected from the group consisting of kason and BIT 20.
9. Use of the complex biological degreaser of any of claims 1 to 8, comprising a degreasing treatment for pickled or blue wet hides.
10. The use of claim 9, further comprising the complex biological degreaser degreasing the pickled or wet blue skin under acidic conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010487551.0A CN111592941A (en) | 2020-06-02 | 2020-06-02 | Composite biological degreasing agent and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010487551.0A CN111592941A (en) | 2020-06-02 | 2020-06-02 | Composite biological degreasing agent and application thereof |
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| CN111592941A true CN111592941A (en) | 2020-08-28 |
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| CN202010487551.0A Pending CN111592941A (en) | 2020-06-02 | 2020-06-02 | Composite biological degreasing agent and application thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100112663A1 (en) * | 2007-04-09 | 2010-05-06 | Novozymes A/S | Enzymatic Treatment of Skin and Hide Degreasing |
| CN101831362A (en) * | 2010-06-10 | 2010-09-15 | 中国皮革和制鞋工业研究院 | High efficiency low-foaming blue leather degreaser |
| CN105524906A (en) * | 2014-09-29 | 2016-04-27 | 湖南新鸿鹰生物工程有限公司 | Leather softening compound enzyme with acid proteases and method for preparing leather softening compound enzyme |
| CN106191340A (en) * | 2016-07-28 | 2016-12-07 | 四川大学 | Acid bating defat compound enzymic preparation and leather-making technology application thereof |
| CN106350620A (en) * | 2016-08-29 | 2017-01-25 | 四川达威科技股份有限公司 | Composite lipase degreasant and application |
| CN107164585A (en) * | 2017-07-14 | 2017-09-15 | 四川大学 | A kind of efficient enzyme degreasing method of Animal Skin |
| CN107326124A (en) * | 2017-07-24 | 2017-11-07 | 北京泛博清洁技术研究院有限公司 | A kind of fur degreasing complex enzyme formulation and preparation method thereof |
| CN111139321A (en) * | 2020-01-08 | 2020-05-12 | 漳州信德皮革有限公司 | Leather production process |
-
2020
- 2020-06-02 CN CN202010487551.0A patent/CN111592941A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100112663A1 (en) * | 2007-04-09 | 2010-05-06 | Novozymes A/S | Enzymatic Treatment of Skin and Hide Degreasing |
| CN101831362A (en) * | 2010-06-10 | 2010-09-15 | 中国皮革和制鞋工业研究院 | High efficiency low-foaming blue leather degreaser |
| CN105524906A (en) * | 2014-09-29 | 2016-04-27 | 湖南新鸿鹰生物工程有限公司 | Leather softening compound enzyme with acid proteases and method for preparing leather softening compound enzyme |
| CN106191340A (en) * | 2016-07-28 | 2016-12-07 | 四川大学 | Acid bating defat compound enzymic preparation and leather-making technology application thereof |
| CN106350620A (en) * | 2016-08-29 | 2017-01-25 | 四川达威科技股份有限公司 | Composite lipase degreasant and application |
| CN107164585A (en) * | 2017-07-14 | 2017-09-15 | 四川大学 | A kind of efficient enzyme degreasing method of Animal Skin |
| CN107326124A (en) * | 2017-07-24 | 2017-11-07 | 北京泛博清洁技术研究院有限公司 | A kind of fur degreasing complex enzyme formulation and preparation method thereof |
| CN111139321A (en) * | 2020-01-08 | 2020-05-12 | 漳州信德皮革有限公司 | Leather production process |
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Application publication date: 20200828 |