192results about How to "Strong degreasing ability" patented technology

Disclosed is carbon-containing urethane foam composite material, relating to urethane foam composite material. The composite material is carbon-containing soft urethane foam, or carbon-containing slowly-recoverable urethane foam or carbon-containing hard urethane foam. Apart from the necessary foam source and the auxiliary material, the raw material for preparing the urethane foam includes super-thin bamboo powder or charcoal powder. Furthermore, far-infrared powder, sterilized powder, silver ion powder, organic germanium powder, tea powder or Chinese herbal powder can be added into the raw material for preparing the urethane foam. The urethane foam can be made into bath sponge and washing sponge with the capabilities of adsorbing and degrading noxious gas, disinfecting and sterilizing, radiating far infrared rays and adjusting humidity or be made into pillows, cushions, mattresses and indoor decorations with medical and health care functions in daily life.

The invention relates to the technical field of bath products in life, and in particular relates to shampoo and a preparation method thereof. The shampoo comprises the following components according to parts by weight: 7.5-17.5% of glutinous rice powder, 82-92% of water, 0.05-0.45% of strains, and proper amounts of a stabilizer, an anticorrosive and essence. The preparation method comprises the following steps of: cleaning glutinous rice, grinding the glutinous rice into powder to obtain glutinous rice powder, and sieving the glutinous rice powder through a sieve of 60-100 meshes; mixing 7.5-17.5% of glutinous rice powder and 82-92% of water according to weight percent, and stirring until the mixture is pasty, wherein the water temperature is 5-10 DEG C; adding strains, mixing uniformly, and fermenting 10-20 days under normal temperature, wherein the weight percentages of strains and glutinous rice powder are 0.05-0.45% and 7.5-17.5%; after fermentation, carrying out high-temperature sterilization; adding the proper amounts of stabilizer, anticorrosive and essence for mixing, and stirring uniformly; and hermetically packaging to obtain a finished product. Compared with the prior art, the shampoo not only can meet the cleaning requirement of regular shampoos but also is mild in nature, non-toxic and non-irritant and good in grease and contamination removal capacity, and can prevent diseases of head skin and nourish hair, so that the hair keeps lustrous and moist.

The invention relates to a preparation method for a detergent which is originated from plants, can be used for washing tableware and removing pesticide residues and heavy-metal pollution, has high efficiency, is natural, environmentally friendly and safe, and is easy to degrade. The detergent is prepared by mainly mixing a soapberry saponin extract, alcohol, propylene glycol, soluble starch, water and the like according to a certain proportion. The detergent takes plant natural extract soapberry saponin as a surfactant, has the advantages of good decontamination effect, no toxic or side effect on human bodies and good environmentally-friendly benefit, is easy to degrade and does not pollute the environment. The main material soapberry has a wide source and low cost.

The invention provides a metal cleaning agent which comprises the following components in percentage by weight: 0.3%-5% of a defoaming agent, 1%-15% of a cationic surfactant, 1%-10% of an anionic surfactant, 3%-15% of a nonionic surfactant, 20%-40% of a main cleaning agent, 2%-5% of an inhibiter and the balance of deionized water. The metal cleaning agent provided by the invention has the advantages of low alkali, low foam and environmental friendliness, has a strong deoiling effect under a relatively low temperature and is very low in corrosivity.

The invention discloses a metal greasy dirt cleaning agent and its production method, wherein the metal greasy dirt cleaning agent comprises degreasing agent and surface active agent, while the degreasing agent comprises (by weight ratio) sodium-hydroxide 10-18, sodium carbonate 20-35, sodium tripolyphosphate 15-24, normal sodium pyrophosphate 8-12, sodium silicate 20-30, the surface active agent comprises leveling agent, OP-10 and lauric diglycollic amide 0.8-1.2.

The invention discloses an electrical appliance cleaner, which selects comparatively safe methylen chloride, perchloroethylene, F141B to be constituents. Perchloroethylene has high KB value and strong decontaminating and degreasing ability, can form a layer of waterproof protecting film on the surface of material before full volatilization to prevent water vapour from accumulating, and can be used as the cleaner of the invention. F141B has very strong volatility, which can be used for adjusting the volatility of the product. Methylen chloride also has volatility, decontaminating ability and excellent permeability, which is used for improving the resultant force of the product. The electrical appliance cleaner of the invention is safe in use without flash point or fire point, does not burn while encountering with open fire; the electrical appliance cleaner can replace gasoline, xylene and other flammable organic solvents; the electrical appliance cleaner has no obvious effect on vast majority of plastics, rubber and other high molecular compounds.

The invention discloses a water-based cleaning agent, which comprises the following components in percentage by mass: 1 to 3 percent of sodium tripolyphosphate, 2 to 4 percent of disodium hydrogen phosphate, 0.5 to 1 percent of borax, 2 to 4 percent of nitrobenzoic acid, 0.5 to 2 percent of sodium hydroxide, 1 to 4 percent of surfactant, 2 to 5 percent of polyethylene glycol, 13 to 15 percent of triethanolamine, 0.01 to 0.1 percent of defoamer and the balance of water. The water-based cleaning agent is high in cleaning capacity of greasy dirt, avoids generating a large amount of foam in the cleaning process, is suitable for full-automatic cleaning and ultrasonic cleaning, has the good protective effect on cleaning machines, does not contain inflammable and explosive ingredients, is used safely, does not have influence on human bodies and does not pollution on environment.

The invention relates to an environment-friendly low-temperature efficient metal cleaner. The environment-friendly low-temperature efficient metal cleaner comprises nonionic surfactants I, nonionic surfactants II, anionic surfactants, fatty acid, defoaming agents, low-carbon alcohol and deionized water. Compared with other metal cleaners, the environment-friendly low-temperature efficient metal cleaner has the advantages that the environment-friendly low-temperature efficient metal cleaner is high in cleaning ability, and is good in degreasing ability for various metals even when used at low temperatures; all ingredients of the environment-friendly low-temperature efficient metal cleaner are safe and nontoxic, and the environment-friendly low-temperature efficient metal cleaner does not contain phosphate, nitrite and non-biodegradable substances; the pH (potential of hydrogen) of the environment-friendly low-temperature efficient metal cleaner is moderate, the environment-friendly low-temperature efficient metal cleaner does not corrode surfaces of the metals, is low-foam, is easy to rinse and good in stability, is excellent in antirust ability without antirust agents, can be applied to cleaning surfaces of parts of nonmetal materials, and has a broad application prospect, and a process for manufacturing the environment-friendly low-temperature efficient metal cleaner is simple.

The invention relates to a low temperature electrolytic cleaning agent particularly suitable for secondary cold-rolled steel strips, and is mainly characterized in that the cleaning agent comprises the following components in percentage by weight: sodium hydroxide 20-40%, auxiliary cleaning agent 10-40%, moisture enhancing agent 5-10%, polyether emulsifier 5-30%, chelating agent 1-10%, and antifoaming agent 1-7%, the concentration of the cleaning agent during cleaning is 2-4.5%, and the temperature of the cleaning agent during cleaning is 30-40 DEG C. The cleaning agent can effectively remove the oil stains on the surface of secondary cold-rolled steel strips. The low temperature electrolytic cleaning agent provided by the invention has the advantages of low working temperature, rapid cleaning (the cleaning of the secondary cold-rolled steel strips is finished within 3-6 seconds), no scaling during use, low foam formation, and high stain removal capacity.

The invention discloses a decontamination hand sanitizer which comprises the following components by weight: 2-4 parts of sodium dodecyl benzene sulfonate, 5-8 parts of tea saponin, 1-3 parts of glycerol, 0.1-0.9 part of hydroxypropyl cellulose, 3-5 parts of an aloe extraction liquid, and 60-70 parts of deionized water. The decontamination hand sanitizer disclosed by the invention has strong oil strain removal capacity; the decontamination hand sanitizer contains the aloe extraction liquid, thereby having a protection effect on hand skin; and the decontamination hand sanitizer does not contain harmful substances, thereby having small pollution to the environment after use.

The invention discloses a compound liquid laundry detergent and a preparation method thereof. The compound liquid laundry detergent comprises, by mass, 10 to 15% of fatty alcohol polyoxyethylene ether-9, 5% of fatty alcohol polyoxyethylene ether-7, 4 to 6% of sodium fatty acid methyl ester sulfonate, 4 to 6% of sodium dodecyl sulfate, 6 to 8% of cocamidopropyl hydroxysulfobetaine, 3 to 4% of dodecyl dimethyl benzyl ammonium chloride, 10% of propylene glycol, 2% of ethanol, 0.25% of a modified organosilicon antifoaming agent AFE-1410, 2% of an auxiliary agent, 0.03% of a fluorescent brighting agent CBS-X, 0.03% of essence, 0.01% of pigment and 1 to 3% of a thickening agent, with the balance being deionized water. Through mutual penetration and synergism of the raw materials, the compound liquid laundry detergent has the characteristics of better detergency, stability, low foam, softness, no harm to a water body, easy degradation, etc. The raw materials used for preparation of the compound liquid laundry detergent are easily available and environment-friendly; and the preparation method is simple and easily practicable.

The invention relates to biological fermentation hair shampoo and a preparation method thereof. The hair shampoo is prepared from the following raw materials in percentage by weight: 10-15% of composite fermented amino acid total effective nutrient solution, 0.2-0.3% of guar gum, 0.11-0.13% of citric acid, 11-14% of fatty alcohol-polyoxyethylene ether (AES), 2-3% of oligomerization maltose glucoside, 3-5 parts of coconut oil glycollic amide, 0.4-0.6% of climbazole, 6-8 parts of coconut oil amide propyl group glycine betaine, 0.15-0.3% of essence and the balance of pure water, wherein the components are homogenized and mixed step by step, react at controlled temperature and are subsequently cooled down so as to obtain the biological fermentation hair shampoo ultimately. Compared with the prior art, the bath cream has the advantages that the pure natural fermented composite fermented amino acid total effective nutrient solution is used as a hair conditioner raw material, so that the hair shampoo is gentle in property and high in degreasing capability, dirt on hair can be rapidly cleaned because of rich bubble, but the grease is not excessively removed, the metabolism of hair is prompted, the hair is smooth, meek, glossy and elastic after being washed with the hair shampoo, and scurf can be cleaned away.

The invention provides a peel off pack containing activated carbon and a preparation method of the peel off pack. The peel off pack and the preparation method have the beneficial effects that as containing kaolin, sodium carboxymethylcellulose, olive oil and an emulsifier, the peel off pack containing activated carbon, prepared by the preparation method, is wet and elastic after film formation and is capable of lowering damage to skin during peeling; polyvinyl alcohol is a film forming agent; the kaolin is excellent in degreasing ability, so that the skin is smooth and transparent; the activated carbon is developed in pore structure and larger in specific surface area and is capable of effectively adsorbing deep fouling of the skin; the olive oil has the efficacies of refreshing and nourishing skin; honey is capable of effectively softening cuticle and promoting the skin to absorb nutrition and has the actions of a penetrating agent; silk peptide amino acid is rich in content, contains eight kinds of amino acid which are necessary in a human body and is also capable of inhibiting the formation of melanin.

The invention relates to a kitchen cleaner and a preparation method thereof. The cleaner comprises the following components in percentage by weight: 1 percent to 5 percent of caustic soda liquid, 1 percent to 5 percent of sodium citrate, 1 percent to 4 percent of Berol226 (ethoxy alcohol and alkyl glycoside surfactant), 1 percent to 4 percent of FMEE (fatty acid methyl ester ethoxylate), 3 to 8 percent of glycol ether, 1 to 3 percent of N-methyl-2-pyrrolidone, 0.05 to 0.1 percent of TB10 consisting of Kathon and 2-bromo-2-nitro-1,3-propanediol, and the balance of water. The kitchen cleaner adopts an imported mixture with cation and non-ionic surface activity, has superstrong degreasing capacity, shows higher degreasing capacity when being compounded with a chelate and has excellent tolerance on both hard water and soft water. The kitchen cleaner can be kept stable under both the acid and alkali conditions, has excellent emulsifying capacity and capacity of preventing oil dirt from being redeposited, and is suitable for various surfaces. The cleaner has excellent fluidity, can rapidly soften dirt with various weights, dissolve the oil dirt into liquid and enable the liquid to be automatically dropped into an oil cup in any seasons under the non-disassembled condition, has high drying speed, is easy to polish, does not damage the surface of an enclosure and blades, and is not only convenient, but also safe. Anticorrosive sterilizing factors effectively inhibit bacterial colony from being bred. No matter novel or old range hood can achieve an ideal cleaning effect.

The invention provides a wet tissue for kitchen cleaning and disinfection. According to the wet tissue for the kitchen cleaning and disinfection, alpha-alkenyl sodium sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, C12 fatty alcohol polyoxyethylene (9) ether, ethylenediamine tetraacetic acid disodium, sodium citrate, 1, 2-propylene glycol, arachlorometaxylenol, isothiazolone, essence, citric acid and deionized water are prepared into wet tissue raw liquid according to a certain proportion, the wet tissue raw liquid is evenly dripped on a spunlace non-woven fabric film, and then sealed and packed to form a product. When the wet tissue for the kitchen cleaning and disinfection is used, the wet tissue simply covers on an article to be wiped evenly, and the article is wiped repeatedly after a few moments. The wet tissue for kitchen cleaning and disinfection has the advantages of being not harmful to hand, strong in degreasing ability, obvious in disinfecting effect, convenient to use and the like.

The invention discloses an oil stain detergent for sewing machine overhauling, which comprises the following raw materials in percentage by mass: 3-8% of chelator, 15-20% of emulsifier, 3-4% of rust inhibitor, 2-6% of triethanolamine oleate soap, 1% of sodium hydroxide, 4% of sodium carbonate and the balance of water. The detergent prepared under certain conditions has high oil stain removal capacity, does not corrode metal equipment, does not generate irritating odor in use, and thus, is safe to use. The detergent can effectively prevent the sewing machine cleaning equipment from rusting. The detergent system has stable properties, can not easily go bad, and has favorable stability.

The invention belongs to the field of non-ferrous metal recovery, and particularly relates to a recovery method of a waste SCR denitration catalyst. The recovery method comprises the steps of pretreatment, TiO2 separation, extraction and purification, titanium recovery, vanadium recovery, tungsten / molybdenum recovery and the like. The recovery method is capable of recycling a several precious recovery products such as V2O5, ammonium tungstate / ammonium molybdate and BaTiO3 from the waste SCR denitration catalyst. The invention provides an effective technical scheme, and efficient resource utilization of the waste SCR denitration catalyst can be realized.

The invention relates to the field of chemical articles for daily use, in particular to an alkali liquor used for a dishwasher and table ware. The alkali liquor takes alkali metal sodium hydroxide as main component and utilizes strong alkali saponifying grease to promote protein macromolecule to be dissolved and hydrolyzed, thus having stronger removing function for oil stains, smudge and protein smudge; when being matched with other solvents, especially ethylenediamine tetracetic acid chelator, the alkali liquor plays the role of washing and removing stains and can prevent hard scale formed by various inorganic salts in the water, thus achieving the aim of cleaning. The strong alkali has no foam, strong capability of degreasing, and does not need to prewash the table ware by using liquid detergent and bleach like other products, so that the aims of little dosage, good effect, energy conservation as well as saving labor and cost can be achieved only by adding 0.1-0.5% of the alkali liquor.

The invention belongs to the field of chemical cleaning agents, discloses a water-soluble cleaning liquid used for magnesium alloy cleaning and further discloses a preparation method of the water-soluble cleaning liquid. The water-soluble cleaning liquid comprises, by weight, 8-20 parts of non-ionic surfactants, 3-10 parts of corrosion inhibitors, 2-8 parts of anionic surfactants, 2-4 parts of pHregulators, 2-5 parts of chelating agents and 60-80 parts of water. A magnesium alloy cleaning agent is good in emulsibility, high in deoiling ability, stable in performance, good in cleaning performance and high in rust prevention ability and has the excellent anti-corrosion ability to a magnesium alloy.

The invention discloses a green sea fruit and vegetable antibacterial cleaning agent and a preparation method thereof. The antibacterial cleaning agent takes alkyl glycoside as a main component and comprises the following components by mass percent: 70-80% of surfactant, 3-6% of thickening agent, 6-9% of detergent assistant, 1-4% of pH regulator, 0.1-0.4% of preservative and the balance of water. The antibacterial cleaning agent has the beneficial effects that the raw materials of the product are green substances and are non-toxic, harmless, healthy and environment-friendly, thus avoiding damages of the artificially synthesized detergent to washings and residues in water; besides, the cleaning agent has stronger degreasing capability, is convenient to use, can be used for removing harmful substances on fruits and vegetables, such as residual pesticides and wax, has exquisite and stable foam and stronger antibacterial property, is pollution-free, does not cause secondary pollution and is beneficial to environment-friendly rapid development; and therefore, the antibacterial cleaning agent has the advantages of green raw materials, non-toxicity, harmlessness, healthiness, environment-friendliness, and the like.

The invention discloses aromatic cleaning powder. The aromatic cleaning powder is prepared from the following raw materials in parts by weight: 20-30 parts of sodium dodecyl sulfate, 3-5 parts of vanillin, 10-14 parts of tea saponin, 3-5 parts of carbon nanopowder, 1-2 parts of calcium stearate, 2-3 parts of potassium sorbate, 1-3 parts of saw dust, 2-3 parts of calcium carbonate, 10-16 parts of bentonite, 2-3 parts of phosphorus pentoxide, 6-8 parts of sodium dehydroacetate, 0.3-1 part of linalyl acetate and 4-5 parts of auxiliaries. The aromatic cleaning powder is high in biodegradation rate, strong in oil fouling removing capacity, good in antibacterial activity, not prone to deteriorating and stinking, pollution-free, environment-friendly, and harmless to a human body; the added vanillin is capable of effectively improving the smell of a traditional cleaning powder; and the aromatic cleaning powder is wide in application range.

The invention relates to the technical field of washing processing, and concretely discloses a preparation method of plant washing salt powder. The method comprises the following steps: preparing cassia seed and ginkgo biloba extract, preparing soybean, tea seed and ripe vegetable sponge extract, uniformly stirring above extracts at 40-60DEG C, filtering, carrying out vacuum drying on the above obtained filtrate, adding citric acid, alkaline protease, plant cellulase, quartz sand, diatomite and salt, mixing, putting the obtained mixture in a crusher, crushing to prepare 60-100 mesh particle powder, bagging, and sealing. The plant washing salt powder is similar to detergent powder, and is convenient to transport and carry due to the powder shape, the whole plant washing salt powder respectively adopt natural plants as raw materials, and the alkaline protease and the plant cellulase added in the invention have low activity in a dry state and have a degradation effect after being mixed with water to remove protein and plant fibers on the surface of an object to be washed; and the plant washing salt powder has very strong washing and oil stain removal abilities, and also has a hand protection function.

The invention relates to a grease dirt cleaning agent for bituminous pavement and a preparation method, and the grease dirt cleaning agent is prepared by the following steps: stirring and emulsifying sodium dodecylsulphonate (SDS) and alpha-olefin sulfonate (AOS) to prepare non-ionic surfactant mixed latex; stirring and emulsifying alkyl polyglucoside (APGS) and fatty alcohol-polyoxyethlene ether (FAPE) to prepare anionic surfactant mixed latex; mixing the non-ionic surfactant mixed latex with the anionic surfactant mixed latex; and adding ethanol and deionized water, stirring and emulsifying, and cooling to obtain the product. The grease dirt cleaning agent for bituminous pavement in the invention has the advantages of strong dirt-removing power, low production cost and convenient usage, and is easy to dissolve in water; all components thereof can be completely in biodegradation; and the used waste water can be discharged directly without toxicity and pollution on environment.

The invention provides a metal antirust agent. The metal antirust agent comprises, by weight, 6-10 parts of citric acid, 1-5 parts of edetic acid, 4-8 parts of binary acid, 10-20 parts of monoethaneamine benzoate, 10-20 parts of triethanolamine, 10-20 parts of diethanol amine, 20-30 parts of synthetic boric acid ester, 25-35 parts of macrogol ester, 35-45 parts of epoxy acrylate resin, 30-40 parts of N-octadecane oeoyl sarcosine acid, 0.4-1.0 part of a silicon antifoaming agent and 600-800 parts of water. The metal antirust agent is scientific and reasonable in formula and free of hazardous substances such as trichloroethane and tetrachloroethane and environment pollution, and the ozone sphere at a high altitude cannot be damaged. The degreasing and decontamination capacity is high, and no harmful effect to non-ferrous metal exists. The antirust capability is high, foam is not produced, and the overflowing phenomenon cannot occur at a high pressure.

The invention belongs to the technical field of glass cleaning, and more specifically relates to a cleaning method of a printing ink specially used for glass screen printing. The cleaning method comprises following steps: a washing solution is prepared; the washing solution is introduced into a cleaning device, and is heated to 120 to 160 DEG C; glass plates to be cleaned are introduced into the washing solution, and are immersed in the washing solution, and the temperature is maintained to be constant for 2 to 3h; the glass plates are taken out from the washing solution, and are washed; the glass plates are introduced into ultrasonic equipment for ultrasonic washing, and then are dried. Compared with the prior art, the cleaning method possesses following advantages: printing ink on the glass plates can be removed completely; no damage on the printing layers on the glass plates is caused; in the washing solution, a plant based environment-friendly organic solvent and a volatile organicsolvent which are friendly to the environment are adopted, excellent oil and dirt removing effect is achieved, and no environment pollution is caused.

The invention provides a novel water-soluble non-phosphorus degreasing agent for a permanent magnet material, comprising alkali, a cleaning auxiliary agent and a surface active agent, wherein the alkali is a mixture of two or more of sodium hydroxide, sodium carbonate and sodium gluconate; the cleaning auxiliary agent is a polyacrylic acid polymer; and the surface active agent is a low-foam non-ionic surface active agent. The novel water-soluble non-phosphorus degreasing agent for the permanent magnet material has the characteristics of neutrality, non-phosphorus property, environmental-protection performance and low temperature. According to the invention, the degreasing agent has good wettability, permeability, emulsibility and strong degreasing capability, and can prevent grease dirt from being adsorbed again; the degreasing solution is stable, has high grease dirt capacity and can be used in a long term; and meanwhile, by using the non-ionic surface active agent, the foam is little, the washing performance is superior, the water can be softened, and the corrosion of the permanent magnet material in degreasing powder can be avoided.

The invention relates to the field of viscose, in particular to a preparation method of flat viscose filament yarns and a spinning nozzle used in the preparation process. The production method comprises a process for preparing a spinning original solution, a spinning process, a post-treatment process and a post-processing process. The invention also relates to application of the flat viscose filament yarns to preparation of cleaning cloth, and the spinning nozzle used in the preparation method. The flat viscose filament yarns provided by the invention are widely applied and can be used for preparing the cleaning cloth; the cleaning effect of the cleaning cloth can be well matched with that of cleaning cloth prepared from superfine chemical fiber, and the cleaning cloth is susceptible to moisture absorption and quick drying; the cleaning cloth is easy to clean, has good hand feel and special gloss, is insusceptible to bacterial breeding, and can meet the requirements of people on high-grade furniture supplies.

The invention provides an oil removal powder for a metal surface. The oil removal powder comprises the following raw materials of, by weight, 20-30 g of sodium carbonate, 5-10 g of borax, 0.5-1 g of EDTA disodium, 8-10 g of washing assistant, 40-50 g of a metal protective agent and 2.5-7.5 g of a surfactant, wherein the surfactant comprises at least one of an anionic surfactant and a nonionic surfactant; the anionic surfactant is sodium alcohol ether sulphate; the nonionic surfactant comprises at least one of nonylphenol polyoxyethylene ether and fatty acid methyl ester ethoxylate; and the washing assistant is sodium citrate. A preparation method comprises the following steps of mixing sodium carbonate, borax and EDTA disodium, and carrying out uniform stirring so as to obtain a powder A;mixing the washing assistant and the metal protective agent, and carrying out uniform stirring so as to obtain a powder B; mixing the powder A and the powder B, adding the surfactant, and carrying outuniform stirring so as to obtain the finished product oil removal powder. The oil removal powder is high in oil removal capability and has good wetting, solubilizing and emulsification capabilities.

The invention relates to a foamless detergent which is aliphatic alcohol polyether synthesized by an external recycle unit and which is composed of aliphatic alcohol, epoxy ethane and propylene oxide. By the employment of the detergent of the invention, various oils and resembling oil materials can be easily removed from a plurality of adsorbates. The detergent substitutes for normal series products of ODS and APEO which are harmful to human environment, and has the advantages of toxic-free property and environment preservation. The invention has outstanding properties, including humectation, emulsification, dispersion, solubilization and the like, and thereby the invention is an environment-friendly detergent which is high in efficiency, acid-free, high in wetting property and high in detergency.

The invention discloses a leather softening compound enzyme with acid proteases and a method for preparing the leather softening compound enzyme. The leather softening compound enzyme and the method have the advantages that the leather softening compound enzyme is mainly made of the high-activity acid proteases with abundant plant proteases and microorganism proteases, mould culture, acid lipase, non-ionic surfactants, plant extract, antioxidants, protective agents, activators and the like are scientifically compounded, accordingly, the compound enzyme is provided with complete enzyme systems, is stable in activity and high in efficacy, permeability and degreasing capacity and can act mildly and moderately, the hand feel and physical and mechanical properties of crust leather can be obviously improved, the bare weight of the crust leather can be obviously increased, and the shrinkage temperatures of the crust leather of raw hide of wet-blue leather of different animals can be increased by 9-14 DEG C; the porosity of the crust leather can be improved by 7.85-10.96%; the breathability of the crust leather can be improved by 41.0-50.1 mL / cm<2>hr; the tensile strength of the crust leather can be improved by 6.51-7.47 N / mm<2>; the tear strength of the crust leather can be improved by 5.28-20 N / mm; the elongation of the crust leather can be improved by 4.8-8.7%; the quality of products can be greatly improved, and the production cost can be reduced.