A heavy-duty detergent composition, preparation method and application thereof

Abstract

The present invention relates to the technical field of daily chemical products, and specifically to a heavy-duty detergent composition, a preparation method and application thereof, and in particular to its application in cleaning the surface of metal articles, wherein the metal includes aluminum. The heavy-duty detergent composition of the present invention comprises: 5% to 30% of an alkali agent, 1% to 20% of an organic anticorrosive agent, 1% to 20% of a surfactant, 0.1% to 3% of a chelating agent, 20% to 90% of a filler, and 0% to 5% of other auxiliary agents; the alkali agent comprises an organic alkali and an inorganic alkali, the weight ratio of the organic alkali to the inorganic alkali is (1 to 3): (3 to 1), and the weight ratio of the alkali agent to the organic anticorrosive agent is (1 to 4): (4 to 1). The composition has good cleaning effect, low corrosivity, high safety, low price, and is convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of daily chemical products, and in particular to a heavy-duty detergent composition, a preparation method and application thereof. Background Art

[0002] With the rapid development of economy and the improvement of living standards, the market size of the baked food industry has been increasing year by year at a high growth rate, and the market size of the baked food industry has also been gradually expanding. The rapid growth of the baking market means a large consumption of baking trays, among which aluminum baking trays have low density, high strength, good plasticity, and good thermal conductivity, and are favored by manufacturers. However, aluminum baking trays are not resistant to acid and alkali and are easily corroded, so cleaning has always been a difficult problem.

[0003] In actual production, on the one hand, the mixture of grease and fallen food crumbs will firmly stick to the surface of the baking pan under high temperature baking for a long time; on the other hand, continuous production often cannot be cleaned in time, and heavy dirt is formed day after day, which is difficult to clean with ordinary dishwashing detergents. Therefore, it is necessary to take into account both the cleaning effect and the anti-corrosion effect when cleaning aluminum baking pans. At present, there are a small number of acidic detergents and alkaline detergents on the market. However, acidic detergents are expensive and have poor cleaning effects; although alkaline detergents have good cleaning effects, they often cause serious corrosion to the baking pan, which in turn endangers the health of consumers. In addition, there are few types of baking pan detergents on the market, mainly liquid, with high storage and transportation costs, and it is impossible to choose according to the severity of the dirt, which is inconvenient to use.

[0004] A method provides a metal detergent, which is compounded with polyvinyl alcohol, sodium lauryl sulfate, silicon dioxide, sodium lauryl polyether sulfate and a non-ionic surfactant. Polyvinyl alcohol acts as a surfactant and also as a precipitant to have a certain protective effect on the metal surface when cleaning. Silicon dioxide has a certain friction removal effect on the dust and particles on the metal surface. This metal detergent uses relatively mild raw material ingredients. Although it reduces the risk of corrosion of metal materials, it cannot achieve an effective cleaning effect on heavily dirty metals and cannot take into account the cleaning effect of heavy dirt.

[0005] There is a method to provide a metal detergent with high cleaning performance, rust prevention, sewage treatment performance, foam suppression and excellent liquid stability. On the one hand, the above detergents are still aimed at medium and light dirt; on the other hand, liquid detergents are inconvenient to transport and have high cost prices.

[0006] In response to the above problems, if a detergent can be developed that combines cleaning effects, low corrosiveness, stability, safety, low cost and ease of use, it will be of great appeal to bread and cake manufacturers and have a very broad market application prospect. Summary of the invention

[0007] Based on this, the purpose of the present invention includes providing a heavy-duty detergent composition and a preparation method and application thereof. The heavy-duty detergent composition has the characteristics of good cleaning effect, low corrosiveness, high safety, low price, and easy use. It can be dissolved and diluted with water in a certain proportion to prepare an aqueous solution for cleaning the surface of objects made of metal or alloy materials.

[0008] The technical solution of the present invention includes the following contents:

[0009] A heavy-duty detergent composition comprises the following raw materials and their weight percentages:

[0010]

[0011] Wherein, the alkali agent comprises an organic base and an inorganic base in a weight ratio of 1:3 to 3:1;

[0012] The organic base comprises at least one of an alcohol amine compound, a fatty amine compound, an alicyclic amine compound and a polyethylene imine compound;

[0013] The inorganic base includes a hydroxide;

[0014] The organic anticorrosive agent comprises at least one of organic phosphoric acid, organic phosphate, alkyl sulfonate, polyamino acid and organic zinc salt;

[0015] The weight ratio of the alkaline agent to the organic anti-corrosion agent is 1:4 to 4:1.

[0016] In some embodiments, the surfactant includes at least one of an anionic surfactant and a nonionic surfactant.

[0017] In some embodiments, the heavy-duty detergent composition satisfies at least one of the following conditions:

[0018] (1) The surfactant comprises the anionic surfactant and the nonionic surfactant in a weight ratio of 1:2 to 2:1;

[0019] (2) the anionic surfactant comprises at least one of alkyl sulfonates, alkylbenzene sulfonates, α-olefin sulfonates, alkyl sulfates and alkyl polyether sulfates;

[0020] (3) The nonionic surfactant includes at least one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty acid polyoxyethylene ester, polyoxyethylene alkylamine, polyoxyethylene alkylamide, polyethers and nonylphenol polyoxyethylene ether.

[0021] In some embodiments, the surfactant is fatty alcohol polyoxyethylene ether and dodecylbenzene sulfonate in a weight ratio of 1:2 to 2:1.

[0022] In some embodiments, the organic base includes at least one of monoethanolamine, diethanolamine, triethanolamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine, cyclohexylamine, cyclohexylethylamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine.

[0023] In some embodiments, the inorganic base includes at least one of sodium hydroxide, potassium hydroxide, lithium hydroxide, magnesium hydroxide, calcium hydroxide and barium hydroxide.

[0024] In some embodiments, the organic anti-corrosion agent includes at least one of amino trimethylene phosphonic acid, ethylenediaminetetramethylene phosphonic acid, sodium hydroxyethylidene diphosphonate, sodium petroleum sulfonate, polyaspartic acid, polylysine, polysarcosine, zinc acetate, zinc glycinate, zinc lysine and zinc threonate.

[0025] In some embodiments, the chelating agent comprises at least one of sodium citrate, disodium ethylenediaminetetraacetic acid, tetrasodium ethylenediaminetetraacetic acid, tetrasodium glutamate diacetic acid, trisodium methylglycine diacetic acid, and tetrasodium iminodisuccinic acid; and / or

[0026] The filler comprises at least one of silicate, carbonate, sulfate, phosphate and bentonite; and / or

[0027] The other auxiliary agents include at least one of flavors, pigments, pearl powder, enzyme preparations, preservatives, antibacterial agents and colored particles.

[0028] A method for preparing a heavy-duty detergent composition comprises the following steps:

[0029] Weigh the raw materials according to the formula of the heavy-duty detergent composition described above;

[0030] Mix the filler, the inorganic base and the organic anti-corrosion agent, and stir for 10 to 20 minutes;

[0031] Add the organic base and the surfactant in a spraying manner and mix at 800 r / min to 1000 r / min;

[0032] Then add the chelating agent and other adjuvants and mix.

[0033] An application of the heavy-duty detergent composition described above in cleaning the surface of an article made of metal or alloy material comprises:

[0034] According to the degree of stains on the surface of the metal or metal alloy article, the heavy-duty detergent is mixed with water in a volume ratio of 1:1 to 1:5 and used at 10°C to 60°C.

[0035] The heavy-duty detergent composition of the present invention uses an alkaline system as the basic framework of the formula to ensure the washing and cleaning effect of the formula. In order to achieve the excellent anti-corrosion effect of the formula, on the one hand, a compound of inorganic alkali and organic alkali is used to avoid excessive corrosion of the metal by the inorganic alkali, and on the other hand, the polar groups in the organic anti-corrosion agent are used to adsorb on the metal surface, thereby forming a monomolecular film in the entire anode and cathode area to prevent or slow down the occurrence of electrochemical reactions; at the same time, the hydrophilic group and hydrophobic group of the anti-corrosion agent are used to make its molecules adsorb on the metal surface through the hydrophilic group part to form a dense hydrophobic film, thereby protecting the metal surface from corrosion.

[0036] The beneficial effects of the present invention include the following:

[0037] 1. One of the beneficial effects of the present invention is that the organic base and the inorganic base are compounded to ensure the effective cleaning effect of the metal while avoiding the corrosion of the metal by excessive inorganic base.

[0038] 2. Another beneficial effect of the present invention is that by utilizing the introduction of organic corrosion inhibitors, the occurrence of electrochemical reactions on the metal surface is prevented or slowed down, effectively protecting the metal surface from corrosion, while taking into account the cleaning effect and anti-corrosion effect of the formula.

[0039] 3. Another beneficial effect of the present invention is that the formula is designed into a powder form, which effectively achieves the stability of the formula and the convenience of use, and achieves cost savings and operational convenience by controlling different dilution ratios for different degrees of heavy dirt.

[0040] 4. The heavy-duty anti-corrosion metal detergent of the present invention has the characteristics of good cleaning effect, low corrosivity, high safety, low price, and convenient use, and has wide market demand and application value.

[0041] In order to achieve the convenience of use of the formula, the heavy-duty detergent composition of the present invention is designed as a powder formula so that consumers can control the dilution ratio in different proportions according to different degrees of heavy dirt to achieve cost savings and convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 This is a schematic diagram of the appearance of the cleaning performance evaluation and corrosion resistance performance evaluation grading standards of this application.

[0044] Figure 2 The corrosion of the outer surface of the metal baking pan after washing in Example 1, Comparative Example 2 and Comparative Example 3 (see Figure 2 (a), (b) and (c)).

[0045] Figure 3 Schematic diagram of the metal baking tray after washing in Example 2 and Comparative Example 2 observed under a metallographic microscope (see Figure 3 (a) and (b)).

[0046] Figure 4 Schematic diagram of the appearance of the baking tray of Example 2 before and after washing (see Figure 4 (a) and (b)). DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the embodiments, examples and accompanying drawings. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the protection scope of the appended claims of the present invention.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0049] Unless otherwise specified or incompatible herewith, the terms and phrases used herein shall have the following meanings:

[0050] The term "and / or" used in this article includes any one of two or more related listed items, and also includes any and all combinations of the related listed items, wherein any and all combinations include any two related listed items, any more related listed items, or a combination of all related listed items.

[0051] In the present invention, “further”, “furthermore”, “particularly”, etc. are used for descriptive purposes to indicate differences in content, but should not be construed as limiting the scope of protection of the present invention.

[0052] In the present invention, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.

[0053] In the present invention, when it comes to numerical intervals (i.e., numerical ranges), unless otherwise specified, the optional numerical distribution is considered continuous within the above numerical interval, and includes the two numerical endpoints (i.e., the minimum value and the maximum value) of the numerical range, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to integers within the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints. In addition, when multiple ranges are provided to describe features or characteristics, these ranges can be merged. In other words, unless otherwise specified, the ranges disclosed herein should be understood to include any and all subranges included therein.

[0054] All preparations and experiments in the present invention were carried out at 25°C.

[0055] The temperature parameters in the present invention, if not specifically limited, are allowed to be either constant temperature treatment or to vary within a certain temperature range. It should be understood that the constant temperature treatment allows the temperature to fluctuate within the precision range controlled by the instrument. Fluctuations within the range of ±0.5°C, ±0.4°C, ±0.3°C, ±0.2°C, and ±0.1°C are allowed.

[0056] In the present invention, weight may be μg, mg, g, kg or other mass units known in the chemical industry.

[0057] In the present invention, "includes", "comprising", "including", "containing", "having" or other variations are intended to cover non-closed inclusions, and these terms are not distinguished from each other. The term "comprising" means that other steps and ingredients that do not affect the final result can be added. The term "comprising" also includes the terms "consisting of" and "consisting essentially of". The compositions and methods / processes of the present invention may include, consist of, and consist essentially of the essential elements and limitations described herein, as well as any additional or optional ingredients, compositions, steps, or limitations described herein.

[0058] In one aspect of the present invention, a heavy-duty detergent composition is provided. The heavy-duty detergent composition has the characteristics of good cleaning effect, low corrosiveness, high safety, low price, and convenient use. The heavy-duty detergent composition can be dissolved and diluted with water in a certain proportion to prepare an aqueous solution for cleaning metal items.

[0059] The composition of the invention comprises an alkali agent, an organic corrosion inhibitor, a surfactant, a chelating agent, a filler and other auxiliary agents in appropriate percentages, which together form a basic framework of the formula with an alkaline system to ensure the washing and cleaning effect of the formula. The composition adopts a compound of an inorganic base and an organic base to avoid excessive corrosion of the metal by the inorganic base. The polar groups in the organic corrosion inhibitor are adsorbed on the metal surface, thereby forming a monomolecular film in the entire anode and cathode regions to prevent or slow down the occurrence of electrochemical reactions. At the same time, the hydrophilic group and the hydrophobic group of the corrosive agent allow its molecules to be adsorbed on the metal surface through the hydrophilic group part to form a dense hydrophobic film, thereby protecting the metal surface from corrosion.

[0060] In one embodiment, the heavy-duty detergent composition comprises the following raw materials and their weight percentages:

[0061]

[0062] Wherein, the alkali agent comprises an organic base and an inorganic base in a weight ratio of 1:3 to 3:1;

[0063] The organic base includes at least one of an alcohol amine compound, an aliphatic amine compound, an alicyclic amine compound and a polyethyleneimine compound;

[0064] Inorganic bases include hydroxides;

[0065] The organic anticorrosive agent includes at least one of an organic phosphoric acid, an organic phosphate, an alkyl sulfonate, a polyamino acid and an organic zinc salt;

[0066] The weight ratio of the alkali agent to the organic corrosion inhibitor is 1:4 to 4:1.

[0067] In some of the embodiments, based on the total weight percentage of the heavy-duty detergent composition as 100%, the weight percentage of the alkaline agent is 5% to 30%, and can further be 5% to 20%, for example 5%, 8%, 10%, 12%, 15%, 18%, 20%, 22%, 25%, 28%, 30%, etc.

[0068] In some of the embodiments, based on the total weight percentage of the heavy-duty detergent composition as 100%, the weight percentage of the organic anti-corrosion agent is 1% to 20%, and can further be 3% to 15%, for example 1%, 2%, 5%, 8%, 10%, 12%, 15%, 18%, 20%, etc.

[0069] In some of the embodiments, based on the total weight percentage of the heavy-duty detergent composition as 100%, the weight percentage of the surfactant is 1% to 20%, and can further be 3% to 15%, for example 1%, 2%, 5%, 8%, 10%, 12%, 15%, 18%, 20% and the like.

[0070] In some of the embodiments, based on the total weight percentage of the heavy-duty detergent composition as 100%, the weight percentage of the chelating agent is 0.1% to 3%, and can further be 0.5% to 3%, for example 0.1%, 0.5%, 1%, 2%, 3%, etc.

[0071] In some of the embodiments, based on the total weight percentage of the heavy-duty detergent composition as 100%, the weight percentage of the filler is 20% to 90%, and can further be 45% to 85%, for example 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90% and the like.

[0072] In some of the embodiments, based on the total weight percentage of the heavy-duty detergent composition as 100%, the weight percentage of other additives is 0% to 5%, and can further be 1% to 5%, for example 0% (indicating that the substance is not added), 1%, 2%, 3%, 4%, 5%, etc.

[0073] In some embodiments, the surfactant includes at least one of an anionic surfactant and a nonionic surfactant.

[0074] In some embodiments, the surfactant includes an anionic surfactant and a nonionic surfactant in a weight ratio of 1:2 to 2:1.

[0075] In some embodiments, the anionic surfactant includes at least one of alkyl sulfonates, alkylbenzene sulfonates, α-olefin sulfonates, alkyl sulfates, and alkyl polyether sulfates.

[0076] In some of the embodiments, the nonionic surfactant includes at least one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty acid polyoxyethylene ester, polyoxyethylene alkylamine, polyoxyethylene alkylamide, polyethers and nonylphenol polyoxyethylene ether.

[0077] In some embodiments, the surfactant includes fatty alcohol polyoxyethylene ether and sodium dodecylbenzene sulfonate in a weight ratio of 1:2 to 2:1. Preferably, the surfactant is a mixture of fatty alcohol polyoxyethylene ether and sodium dodecylbenzene sulfonate, wherein the weight ratio of fatty alcohol polyoxyethylene ether to sodium dodecylbenzene sulfonate can be 1:2 to 2:1, and can further be 1:(1.5 to 2), for example 2:1, 1.7:1, 1.5:1, 1:1, 1:1.5, 1:1.7, 1:2, etc.

[0078] In some embodiments, the organic base includes at least one of monoethanolamine, diethanolamine, triethanolamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine, cyclohexylamine, cyclohexylethylamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine.

[0079] In some embodiments, the organic base is selected from monoethanolamine, or a mixture of diethylenetriamine and monoethanolamine.

[0080] In some embodiments, the inorganic base includes at least one of sodium hydroxide, potassium hydroxide, lithium hydroxide, magnesium hydroxide, calcium hydroxide and barium hydroxide.

[0081] The molecular structure of the organic anticorrosive agent in the present invention consists of two parts, one part is a non-polar group that is lipophilic and hydrophobic, and the other part is a polar group that is hydrophilic and lipophobic and is easily adsorbed by metals. The polar group formed by atoms with relatively large electronegativity is adsorbed on the metal surface, changes the charge state, interface properties and free energy state of the metal surface, stabilizes the energy, and slows down the corrosion rate; on the other hand, the non-polar group is arranged on the metal surface in a directional manner to form a hydrophobic protective film, which prevents the invasion of corrosive media and hinders the transfer of related substances or charges involved in the corrosion reaction.

[0082] In some embodiments, the organic anti-corrosion agent includes at least one of amino trimethylene phosphoric acid, ethylenediaminetetramethylene phosphoric acid, sodium hydroxyethylidene diphosphonate, sodium petroleum sulfonate, polyaspartic acid, polylysine, polysarcosine, zinc acetate, zinc glycinate, zinc lysine and zinc threonate.

[0083] In some of the embodiments, the organic anti-corrosion agent is selected from amino trimethylene phosphoric acid, or a combination of at least one of the following ingredients: polyaspartic acid, amino trimethylene phosphoric acid, and zinc glycinate.

[0084] In some of the embodiments, the organic base is monoethanolamine, the organic anti-corrosion agent is aminotri(methylene)phosphoric acid, and the weight ratio of the inorganic base to the organic base is (1-3):1.

[0085] In some of the embodiments, the organic base is a mixture of monoethanolamine and diethylenetriamine, optionally, the weight ratio of monoethanolamine to diethylenetriamine is (0.8-1.2):1; further, the organic corrosion inhibitor includes at least one of polyaspartic acid, aminotri(methylene)phosphoric acid and zinc glycinate, and the weight ratio of the inorganic base to the organic base is (0.5-1):1.

[0086] In some embodiments, the chelating agent includes at least one of sodium citrate, disodium ethylenediaminetetraacetic acid, tetrasodium ethylenediaminetetraacetic acid, tetrasodium glutamate diacetic acid, trisodium methylglycine diacetic acid, and tetrasodium iminodisuccinic acid.

[0087] In some of these embodiments, the filler includes at least one of silicates, carbonates, sulfates, phosphates, and bentonites.

[0088] In some embodiments, other additives include at least one of flavors, pigments, pearlescent powder, enzyme preparations, preservatives, antibacterial agents and colored particles.

[0089] In one embodiment, the heavy-duty detergent composition is composed of 4-20 parts of alkali agent, 5-15 parts of organic anti-corrosion agent, 3-15 parts of surfactant, 0.5-3 parts of chelating agent, 45-85 parts of filler and 0-3 parts of other auxiliary agents based on 100 parts by weight of the total weight; wherein the weight parts of the alkali agent can be independently selected from 4-20 parts, further selected from 8-12 parts, 4-6 parts, for example 4, 5, 6, 8, 10, 12, 15, 20, etc.; the weight parts of the organic anti-corrosion agent can be independently selected from 5-15 parts, further selected from 3-9 parts, 10-15 parts, for example 3, 6, 9, 10, 12, 1 5, etc.; the weight portions of surfactants can be independently selected from 3 to 15 parts, and can be further selected from 10 to 15 parts, 8 to 12 parts, for example 8, 10, 12, 15, etc.; the weight portions of chelating agents can be independently selected from 0.5 to 3 parts, and can be further selected from 0.5 to 2 parts, for example 0.5, 1, 1.5, 2, 3, etc.; the weight portions of fillers can be independently selected from 45 to 85 parts, and can be further selected from 50 to 60 parts, 50 to 70 parts, 60 to 70 parts, and can be further selected from 50, 55, 60, 65, 70, etc.; the weight portions of other auxiliary agents can be independently selected from 0 to 3 parts, for example 0, 1, 2, 3, etc.

[0090] In one embodiment, the heavy-duty detergent composition comprises, by weight:

[0091]

[0092] In one embodiment, the heavy-duty detergent composition comprises, by weight:

[0093]

[0094] In one embodiment, the heavy-duty detergent composition comprises, by weight:

[0095]

[0096] The composition of the present invention can be in powder form, so that consumers can control the dilution ratios according to different degrees of heavy dirt to achieve cost savings and operational convenience.

[0097] A method for preparing the above heavy-duty detergent composition comprises the following steps:

[0098] Weigh the raw materials according to the above formula of heavy-duty detergent composition;

[0099] Take the filler, inorganic base and organic anti-corrosion agent and mix them, stirring for 10min to 20min;

[0100] Add organic base and surfactant by spraying, and mix at 800r / min~1000r / min;

[0101] Then add the chelating agent and other additives and mix.

[0102] A use of the above heavy-duty detergent composition in cleaning the surface of metal or alloy articles comprises:

[0103] Depending on the degree of stains on the surface of metal or metal alloy items, mix heavy-duty detergent and water in a volume ratio of 1:1 to 1:5 and use at 10℃ to 60℃.

[0104] In the application of the heavy-duty detergent composition of the embodiment of the present invention, the heavy-duty detergent composition has good corrosion resistance when used to clean the surface of metal or alloy materials, and has strong decontamination ability, is fast and convenient, and has a wide range of applications. The corrosion resistance in the present invention refers to the corrosion resistance of the metal surface, and the ability of the metal material surface to resist the corrosion and damage of the surrounding medium is called corrosion resistance. For example, the chemical corrosion resistance of the aluminum alloy metal surface is the result of the aluminum metal surface resisting direct chemical reactions with the surrounding medium.

[0105] The following are some specific embodiments.

[0106] The raw materials and reagents involved in the following specific examples can be obtained from commercial sources, or can be prepared by those skilled in the art according to known methods.

[0107] In the following examples, unless otherwise specified, all contents are expressed in weight percentage, and the contents of the listed components are the converted active substance contents.

[0108] In the following embodiments, the following abbreviations will be used and have the functions indicated.

[0109] NaOH: inorganic alkali agent, cleaning agent, pH regulator;

[0110] Monoethanolamine: organic alkali agent, cleaning agent, pH adjuster;

[0111] Diethylenetriamine: organic alkali agent, cleaning agent, pH regulator;

[0112] AEO-9: fatty alcohol polyoxyethylene ether, linear nonionic surfactant;

[0113] LAS: sodium dodecylbenzene sulfonate, anionic surfactant;

[0114] K12: sodium lauryl sulfate, anionic surfactant, foaming agent;

[0115] Anhydrous sodium metasilicate: filler, cleaning aid;

[0116] Sodium carbonate: filler, cleaning aid;

[0117] Sodium sulfate (anhydrous sodium sulfate): filler, cleaning aid;

[0118] EDTA-2Na: ethylenediaminetetraacetic acid tetrasodium salt, metal chelating agent;

[0119] ATMP: aminotrimethylphosphonic acid, organic corrosion inhibitor;

[0120] HEDP-4Na: Sodium hydroxyethylidene diphosphonate, organic corrosion inhibitor;

[0121] Sodium petroleum sulfonate: alkyl sulfonate, organic anticorrosive agent;

[0122] Polyaspartic acid: polyamino acid, organic anticorrosive agent;

[0123] Zinc Glycinate: Amino acid zinc salt, organic anti-corrosion agent.

[0124] 1. Preparation and application of heavy-duty detergent

[0125] 1. Raw material preparation

[0126] According to Table 1, detergent compositions AE of Examples 1-4 and Comparative Example 1 were formulated.

[0127] Table 1 Raw materials and weight parts of heavy-duty detergent composition

[0128]

[0129]

[0130] 2. Preparation of solid detergent

[0131] (1) Weigh a certain amount of cleaning aid and inorganic filler in a beaker and stir for 10-20 minutes to mix evenly;

[0132] (2) Add the solid inorganic alkali agent and the corrosion inhibitor into the beaker in sequence, stirring while adding. After the addition is completed, stir for 10 minutes to mix evenly;

[0133] (3) After the cleaning aid, filler, inorganic alkaline agent and organic anti-corrosion agent are uniformly mixed, organic liquid alkali and surfactant are added in sequence in the form of spraying, and the system is mixed uniformly under high-speed stirring at 800-1000 r / min.

[0134] (4) Continue to add the remaining additives and other ingredients into the above beaker and stir until the mixture is evenly mixed; a solid powder product can be obtained.

[0135] 3. Cleaning performance and corrosion resistance test methods

[0136] The prepared detergent is diluted with pure water in a certain ratio (1:1-1:6), stirred until completely dissolved, and the plates are immersed in the detergent aqueous solution at a certain temperature (15℃-65℃) for a certain period of time (5min-30min). After the immersion is completed, take out the plates, brush each part back and forth with a brush for about 5 times (simulating the mechanical cleaning in the actual washing factory), and then rinse with water, and evaluate its cleaning performance by visual observation.

[0137] The prepared detergent is diluted with pure water in a certain ratio (1:1-1:6), stirred until completely dissolved, and the plate is immersed in a detergent aqueous solution at a certain temperature (15°C-65°C) for a certain period of time (5min-30min). After the immersion is completed, take it out, brush each part back and forth with a brush for about 5 times (simulating the mechanical cleaning of the actual washing factory), and then rinse with water, and observe the surface of the metal baking tray with a metallographic microscope, and evaluate the corrosion resistance of the composition according to the degree of surface corrosion.

[0138] For the criteria of cleaning performance and anti-corrosion performance, refer to Figure 1 ,Depend on Figure 1 It can be seen that the cleaning effects of the baking pans C1 to C5 are successively enhanced, and the corrosion degrees of the baking pans A1 to A5 are successively weakened.

[0139] 4. Test results

[0140] In each embodiment and comparative example, the composition was dissolved in room temperature water at a ratio of 1:3, and the heavy-duty aluminum plate was immersed for 15 minutes to measure the cleaning effect and anti-corrosion effect and other properties as shown in Table 2:

[0141] Table 2 Heavy-duty detergent composition and performance test results

[0142]

[0143]

[0144] The results show that under the above-mentioned compounding of each composition, composition AE has excellent single cleaning effect on the baking tray. Compared with composition E of comparative example 1, the corrosion inhibitors aminotrimethylenephosphonic acid (ATMP), sodium salt of hydroxyethylidene diphosphonic acid (HEDP-4Na), sodium petroleum sulfonate and benzotriazole introduced into composition AD in the embodiment all show certain metal corrosion resistance. In particular, ATMP and benzotriazole still maintain the excellent corrosion resistance of A5 after 20 washings.

[0145] 2. Attempt to optimize the formula of heavy-duty detergent A

[0146] 1. Raw material preparation

[0147] According to Table 3, the detergent compositions FL of Examples 5-7 and Comparative Examples 2-5 were formulated.

[0148] Table 3 Heavy-duty detergent composition and its weight parts

[0149]

[0150] 2. Prepare the compositions in each embodiment and comparative example according to the preparation method in the first part, and further prepare the detergent aqueous solution; test the detergent aqueous solution in each embodiment and comparative example according to the performance test method in the first part, and the results are shown in Table 4.

[0151] Table 4 Heavy-duty detergent composition and performance test results

[0152]

[0153] According to Table 4, compared with composition J in comparative example 2, compositions F and G in Examples 5 and 6 show relatively poor corrosion resistance when the amount of corrosion inhibitor ATMP in the system is less than 5%, especially after multiple washings, the corrosion resistance is significantly reduced. Compositions F, G, H and I show that the corrosion resistance of the composition increases with the increase of the amount of corrosion inhibitor ATMP. In comparative examples 3 and 4, compositions K and L correspond to compositions with excessively high inorganic alkali and organic alkali contents, respectively. The system with excessively high inorganic alkali content has excellent cleaning performance, but has obvious corrosion effect on the baking tray; while the organic alkali content is too high, it will directly reduce the cleaning effect of the composition. The combination of suitable inorganic alkali and organic alkali can simultaneously achieve excellent corrosion resistance and cleaning effects of the system.

[0154] 3. Attempt to optimize the formula of heavy-duty detergent B

[0155] 1. Raw material preparation

[0156] According to Table 5, detergent compositions MS of Examples 9-12 and Comparative Examples 5-7 were formulated.

[0157] Table 5 Heavy-duty detergent composition and its weight parts

[0158]

[0159]

[0160] 2. Prepare the compositions in each embodiment and comparative example with reference to the preparation method in the first part, and further prepare a detergent aqueous solution; test the detergent aqueous solution in each embodiment and comparative example with reference to the performance test method in the first part, and the results are shown in Table 6.

[0161] Table 6 Heavy-duty detergent composition and performance test results

[0162]

[0163] In Examples 9 to 12, different types of anti-corrosion agents were used in combination with inorganic bases and organic bases, and compositions M, N, O, and P all exhibited excellent cleaning and anti-corrosion performance in the temperature range of 15°C to 65°C and the dilution range of 2:1 to 1:6. In the comparative examples, compositions Q, R, and S maintained excellent cleaning effects, but the anti-corrosion effects could not meet the requirements.

[0164] All documents mentioned in the present invention are cited as references in the present invention, just as each document is cited as a reference separately. Unless it conflicts with the application purpose and / or technical solution of the present invention, the cited documents involved in the present invention are cited with all contents and all purposes. When the present invention involves cited documents, the definitions of relevant technical features, terms, nouns, phrases, etc. in the cited documents are also cited. When the present invention involves cited documents, the examples and preferred embodiments of the cited relevant technical features can also be incorporated into the present invention as references, but are limited to the ability to implement the present invention. It should be understood that when the cited content conflicts with the description in the present invention, the present invention shall prevail or be modified adaptively according to the description of the present invention.

[0165] The technical features of the above-mentioned implementation modes and examples can be combined in any appropriate manner. To make the description concise, not all possible combinations of the technical features in the above-mentioned implementation modes and examples are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0166] The above-described embodiments only express several implementation methods of the present invention, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. In addition, it should be understood that after reading the above-mentioned teaching content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and the equivalent forms obtained also fall within the protection scope of the present invention. It should also be understood that the technical solutions obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the technical solutions provided by the present invention are all within the protection scope of the claims attached to the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims, and the description and drawings may be used to explain the contents of the claims.

Claims

1. A heavy-duty detergent composition, characterized in that It includes the following raw materials and their weight percentages: Wherein, the alkali agent comprises an organic base and an inorganic base in a weight ratio of 1:3 to 3:1; The organic base comprises at least one of an alcohol amine compound, a fatty amine compound, an alicyclic amine compound and a polyethylene imine compound; The inorganic base includes a hydroxide; The organic anticorrosive agent comprises at least one of organic phosphoric acid, organic phosphate, alkyl sulfonate, polyamino acid and organic zinc salt; The weight ratio of the alkaline agent to the organic anti-corrosion agent is 1:4 to 4:

1.

2. The heavy-duty detergent composition according to claim 1, characterized in that The surfactant includes at least one of anionic surfactants and nonionic surfactants.

3. The heavy-duty detergent composition according to claim 2, characterized in that At least one of the following conditions is met: (1) The surfactant comprises the anionic surfactant and the nonionic surfactant in a weight ratio of 1:2 to 2:1; (2) the anionic surfactant comprises at least one of alkyl sulfonates, alkylbenzene sulfonates, α-olefin sulfonates, alkyl sulfates and alkyl polyether sulfates; (3) The nonionic surfactant includes at least one of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty acid polyoxyethylene ester, polyoxyethylene alkylamine, polyoxyethylene alkylamide, polyethers and nonylphenol polyoxyethylene ether.

4. The heavy-duty detergent composition according to claim 3, characterized in that The surfactant is fatty alcohol polyoxyethylene ether and dodecylbenzene sulfonate in a weight ratio of 1:2 to 2:

1.

5. The heavy-duty detergent composition according to any one of claims 1 to 4, characterized in that The organic base includes at least one of monoethanolamine, diethanolamine, triethanolamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine, cyclohexylamine, cyclohexylethylamine, diethylenetriamine, triethylenetetramine and tetraethylenepentamine.

6. The heavy-duty detergent composition according to any one of claims 1 to 4, characterized in that The inorganic base includes at least one of sodium hydroxide, potassium hydroxide, lithium hydroxide, magnesium hydroxide, calcium hydroxide and barium hydroxide.

7. The heavy-duty detergent composition according to any one of claims 1 to 4, characterized in that The organic corrosion inhibitor includes at least one of amino trimethylene phosphonic acid, ethylenediaminetetramethylene phosphonic acid, sodium hydroxyethylidene diphosphonate, sodium petroleum sulfonate, polyaspartic acid, polylysine, polysarcosine, zinc acetate, zinc glycinate, zinc lysine and zinc threonate.

8. The heavy-duty detergent composition according to any one of claims 1 to 4, characterized in that The chelating agent comprises at least one of sodium citrate, disodium ethylenediaminetetraacetic acid, tetrasodium ethylenediaminetetraacetic acid, tetrasodium glutamate diacetic acid, trisodium methylglycine diacetic acid and tetrasodium iminodisuccinic acid; and / or The filler comprises at least one of silicate, carbonate, sulfate, phosphate and bentonite; and / or The other auxiliary agents include at least one of flavors, pigments, pearl powder, enzyme preparations, preservatives, antibacterial agents and colored particles.

9. A method for preparing a heavy-duty detergent composition, characterized in that: The steps include: Weigh the raw materials according to the formula of the heavy-duty detergent composition described in any one of claims 1 to 8; Mix the filler, the inorganic base and the organic anti-corrosion agent, and stir for 10 to 20 minutes; Add the organic base and the surfactant in a spraying manner and mix at 800 r / min to 1000 r / min; Then add the chelating agent and other adjuvants and mix.

10. Use of the heavy-duty detergent composition according to any one of claims 1 to 8 for cleaning the surface of metal or alloy articles, characterized in that: include: According to the degree of stains on the surface of the metal or metal alloy article, the heavy-duty detergent is mixed with water in a volume ratio of 1:1 to 1:5 and used at 10°C to 60°C.

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