Yellow removing gel composition as well as preparation method and application of yellow removing gel composition

Abstract

The invention provides a yellow-removing gel composition as well as a preparation method and application of the yellow-removing gel composition. The yellow-removing gel composition comprises a redox agent, a thickening agent, a stabilizer and a solvent, the thickening agent comprises a mixture of C16-18 fatty alcohol and cetostearyl alcohol polyoxyethylene ether, the mass ratio of the C16-18 fatty alcohol to the cetostearyl alcohol polyoxyethylene ether is (2-7): 1, and the stabilizer comprises ethylenediamine disuccinic acid, ethylenediamine tetra (methylene phosphonic acid), glutamic acid diacetic acid, hydroxy ethylidene diphosphoric acid and one or more of corresponding salts of the substances. The composition in the gel state has good smearing performance and adhesiveness and can easily cover and be tightly attached to the surfaces of various materials; when the gel composition is used, the gel composition can be uniformly smeared and attached to the surface of a yellowed or discolored object, effective components are slowly released, the surface characteristics are not damaged, and it can be ensured that the yellowing effect is renovated and the natural color of the body is restored.

Description

Technical Field

[0001] The present application relates to the technical field of daily chemical products, and in particular to a de-yellowing gel composition, a preparation method of the de-yellowing gel composition and an application thereof. Background Art

[0002] In recent years, composite structure casual shoes with white as the main color have become popular among consumers, and are often collectively referred to as white shoes, such as shell toe shoes, clover white shoes, canvas shoes / sports shoes, casual shoes, air force shoes, etc. However, after wearing white shoes for a period of time, the uppers, shoe edges or soles often have concentrated oxidation yellowing problems, which affects the aesthetics of the white shoes.

[0003] Currently, the bleaching agents on the market mainly include oxygen bleaching and chlorine bleaching. However, for shoe materials, chlorine bleaching is too strong and often corrodes leather or fabrics. Relatively speaking, oxygen bleaching is more gentle, but oxygen bleaching is basically in liquid form, which is very unfavorable for the treatment of shoe edges or soles. It is difficult to attach redox agents to them to play a role. In addition, the redox agents in oxygen bleaching are less stable, which affects the bleaching effect. Summary of the invention

[0004] Based on this, the present application provides a de-yellowing gel composition that is easy to apply on a substrate and in which an oxidizing-reducing agent can be stably present, and a preparation method and application of the de-yellowing gel composition.

[0005] The first aspect of the present application provides a de-yellowing gel composition, comprising an oxidation-reduction agent, a thickener, a stabilizer and a solvent; the thickener comprises a mixture of C16-18 fatty alcohol and cetearyl alcohol polyoxyethylene ether, the mass ratio of the C16-18 fatty alcohol to the cetearyl alcohol polyoxyethylene ether is (2-7):1, and the stabilizer comprises one or more of ethylenediamine disuccinic acid, ethylenediaminetetramethylenephosphonic acid, glutamic acid diacetic acid, hydroxyethylidene diphosphonic acid and the corresponding salts of the above substances.

[0006] In some embodiments, the mass proportion of the thickener in the deyellowing gel composition is 1%-20%, and can be optionally 1.5%-15%.

[0007] In some embodiments, the stabilizer accounts for 0.1%-3% by weight in the deyellowing gel composition.

[0008] In some embodiments, the redox agent comprises hydrogen peroxide;

[0009] Optionally, the redox agent includes hydrogen peroxide, and the mass proportion of hydrogen peroxide in the hydrogen peroxide is 2%-70%.

[0010] In some embodiments, based on 100 parts by mass of the de-yellowing gel composition, the de-yellowing gel composition includes: 1-40 parts of an oxidizing-reducing agent, 1-20 parts of a thickener, 0.1-3 parts of a stabilizer, 0-2 parts of an auxiliary agent, 0-10 parts of a surfactant, 0-1 parts of a flavor, and 20-90 parts of a solvent.

[0011] In some embodiments, the surfactant includes one or more of fatty alcohol polyoxyethylene ether, alkyl glucoside, C8-20 branched alcohol polyoxyethylene ether, dodecylaminopropionate, dodecylethoxysulfobetaine, dodecylhydroxypropylsulfobetaine, dodecylsulfopropylbetaine, octadecyldihydroxyethylamine oxide, cocamidopropylhydroxysulfobetaine, cocamidopropylamine oxide and laurylamidepropylamine oxide.

[0012] In some embodiments, the auxiliary agent includes one or more of sodium citrate, citric acid, and phosphoric acid.

[0013] In some embodiments, the flavor includes one or more of a liquid flavor and an emulsion microencapsulated flavor.

[0014] In some embodiments, the solvent comprises water.

[0015] The second aspect of the present application provides a method for preparing a yellowing-removing gel composition, comprising the following steps:

[0016] Melt the thickener to prepare phase A;

[0017] preparing a solution comprising a stabilizer and a solvent as phase B;

[0018] Adding a redox agent to the phase B to prepare a mixture C;

[0019] Adding the phase A to the mixture C and stirring them homogeneously to prepare the yellowing-removing gel composition;

[0020] Among them, the thickener includes a mixture of C16-18 fatty alcohol and cetearyl alcohol polyoxyethylene ether, the mass ratio of the C16-18 fatty alcohol and the cetearyl alcohol polyoxyethylene ether is (2-7):1, and the stabilizer includes ethylenediamine disuccinic acid, ethylenediaminetetramethylenephosphonic acid, glutamic acid diacetic acid, hydroxyethylidene diphosphonic acid and one or more of the corresponding salts of the above substances.

[0021] The third aspect of the present application provides a use of the anti-yellowing gel composition of the first aspect of the present application in the preparation of a skin care product with anti-yellowing effect.

[0022] The above-mentioned de-yellowing gel composition can significantly improve the compatibility of the redox agent and the thickener by compounding with a specific thickener, and can improve the stability of the redox agent itself in the thickening system by adding a specific stabilizer, so as to prepare a composition in a gel state; the composition in a gel state has good spreadability and adhesion, and can easily cover and fit tightly on the surface of various materials; when used, the gel composition can be evenly applied and attached to the surface of yellowed or discolored objects, and the effective ingredients can be slowly released, which does not destroy the surface characteristics, and can ensure the renovation and de-yellowing effect and restore the original color of the object; it is easy to clean after use, no residue or odor is generated, and can ensure the best use effect and safety. At the same time, the redox agent has super stability, which can reduce decomposition and failure during storage and transportation. DETAILED DESCRIPTION

[0023] For ease of understanding of the present invention, the application will be described more fully below with reference to relevant embodiments. The following provides preferred embodiments of the application. However, the application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] The terms "and / or", "or / and", and "and / or" used herein include any one of two or more related listed items, and also include any and all combinations of the related listed items, wherein the any and all combinations include any combination of two related listed items, any more related listed items, or all related listed items. It should be noted that when at least three items are connected by at least two conjunctions selected from "and / or", "or / and", and "and / or", it should be understood that in the present application, the technical solution undoubtedly includes technical solutions connected by "logical and", and also undoubtedly includes technical solutions connected by "logical or".

[0026] In the present application, 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.

[0027] In this application, when it comes to numerical ranges, unless otherwise specified, the above numerical ranges are deemed to be continuous and include the minimum and maximum values ​​of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be merged. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges included therein.

[0028] Only some numerical ranges are specifically disclosed herein. However, any lower limit can be combined with any upper limit to form an unspecified range; and any lower limit can be combined with other lower limits to form an unspecified range, and likewise any upper limit can be combined with any other upper limit to form an unspecified range. In addition, each separately disclosed point or single value can itself be combined as a lower limit or upper limit with any other point or single value or with other lower limits or upper limits to form an unspecified range.

[0029] The temperature parameters in this application, unless otherwise specified, allow both constant temperature treatment and treatment within a certain temperature range. The constant temperature treatment allows the temperature to fluctuate within the accuracy range controlled by the instrument. Fluctuations within the range of ±5°C, ±4°C, ±3°C, ±2°C, and ±1°C are allowed.

[0030] Herein, the “suitable” mentioned in “suitable combination”, “suitable method”, “any suitable method”, etc., shall be based on the ability to implement the technical solution of this application, solve the technical problems of this application, and achieve the expected technical effects of this application.

[0031] In the present application, "further", "further", "particularly" and the like are used for descriptive purposes to indicate differences in content, but should not be construed as limiting the scope of protection of the present application.

[0032] In this application, "optionally", "optional", and "optional" mean optional or dispensable, that is, any one of the two parallel schemes of "yes" or "no". If multiple "options" appear in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction, each "optional" is independent.

[0033] In the description of the application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] Unless otherwise specified, all formulations and tests herein took place at 25°C.

[0035] As used herein, "includes," "comprising," "containing," "having," or other variations thereof are intended to encompass non-closed inclusions, and no distinction is made between these terms. The term "comprising" means that other steps and ingredients that do not affect the end result may be added. The compositions and methods / processes of the present invention comprise, consist of, and consist essentially of the essential elements and limitations described herein, as well as any additional or optional ingredients, components, steps, or limitations described herein. As used herein, no distinction is made between the terms "efficacy," "performance," "effect," and "efficacy."

[0036] If there is no special description, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution. If there is no special description, all technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0037] If there is no special explanation, all the steps of the present application can be performed sequentially or randomly, preferably sequentially.

[0038] After wearing white shoes for a period of time, the uppers, edges or soles of the shoes often show concentrated oxidation yellowing problems, which affects the aesthetics of the shoes. Through further research, it is known that leather and rubber products will show different degrees of yellowing during long-term use, and the main materials of footwear, such as polyurethane (PU) materials, thermoplastic rubber (TPR) materials, and leather coated with polymer materials, are prone to yellowing under the radiation of sunlight. In addition, fabric fabrics, as an indispensable part of the upper material, are also prone to local yellowing during long-term storage, transportation and wearing. In daily life, many items such as plastic products, furniture, tiles, car interiors, etc. also have the same problem. During use, they are prone to yellow stains on the surface due to environmental factors (such as ultraviolet rays, oxidation, pollution, etc.), affecting the appearance.

[0039] The bleaching agents currently on the market mainly include oxygen bleaching and chlorine bleaching, but for shoe materials, chlorine bleaching is too strong and often corrodes leather or fabrics. Relatively speaking, oxygen bleaching is milder, but oxygen bleaching is basically in liquid form, which is very unfavorable for the treatment of shoe edges or soles, and it is difficult to attach redox agents to them to play a role. Traditional conventional liquid redox agents are difficult to meet special needs. The liquid form makes it impossible for them to adhere to the surface of objects for slow bleaching; and conventional thickeners such as xanthan gum and carbomer cannot maintain a long-term and stable thickening effect under high-strength redox agents, and it is difficult for hydrogen peroxide to exist stably in a gel form.

[0040] Based on the above problems, the present application adopts a specific thickener for compounding and combines it with a specific stabilizer to form a composition in a gel state; the composition is easy to apply on the substrate, and the redox agent can stably exist in the composition and can slowly release the active ingredients during use, thereby prolonging the action time, thereby more thoroughly removing yellow spots, etc. and restoring the original color and texture of the object.

[0041] One or more embodiments of the present application provide a deyellowing gel composition, comprising an oxidation-reducing agent, a thickener, a stabilizer and a solvent; the thickener comprises a mixture of C16-18 fatty alcohol and cetearyl alcohol polyoxyethylene ether, the mass ratio of C16-18 fatty alcohol to the cetearyl alcohol polyoxyethylene ether is (2-7):1, and the stabilizer comprises one or more of ethylenediamine disuccinic acid, ethylenediaminetetramethylenephosphonic acid, glutamic acid diacetic acid, hydroxyethylidene diphosphonic acid and the corresponding salts of the above substances.

[0042] It should be noted that the stabilizer includes one or more of ethylenediamine disuccinic acid and its salts, ethylenediaminetetramethylenephosphonic acid and its salts, glutamic acid diacetic acid and its salts, and hydroxyethylidene diphosphonic acid and its salts.

[0043] It can be understood that the above-mentioned deyellowing gel composition can significantly improve the compatibility of the redox agent and the thickener by compounding with a specific thickener, and can improve the stability of the redox agent itself in the thickening system by adding a specific stabilizer, so as to prepare a composition in a gel state; the composition in a gel state has good spreadability and adhesion, and can easily cover and fit tightly on the surface of various materials; when used, the gel composition can be evenly applied and attached to the surface of yellowed or discolored objects, and the effective ingredients can be slowly released, which does not destroy the surface characteristics, and can ensure the renovation and deyellowing effect and restore the original color of the object; it is easy to clean after use, and no residue or odor is generated, which can ensure the best use effect and safety. At the same time, the redox agent has super stability, which can reduce decomposition and failure during storage and transportation.

[0044] In addition, the gel composition can be evenly applied to any part of shoes, clothing and objects to be treated, and users can also apply it more accurately to the area that needs to be treated without it flowing or dripping as easily as liquid. The gel form can reduce the direct contact area between hydrogen peroxide and the skin, thereby reducing skin irritation. It is easy to operate and has strong adhesion. It can gradually release active oxygen to act, and the effect lasts for a long time and is released gently.

[0045] In some embodiments, the mass proportion of the thickener in the de-yellowing gel composition is 1%-20%; for example, it can be but not limited to 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20% or the range between any two of the above mass proportions, etc. When the mass proportion of the thickener in the de-yellowing gel composition is within the above range, the composition exists in the form of a gel paste, which can be evenly applied to any part of shoes, clothes and objects to be treated. Users can also apply it more accurately to the area to be treated without flowing or dripping as easily as liquid; the gel form can reduce the direct contact area between hydrogen peroxide and the skin, thereby reducing skin irritation, is easy to operate and has strong adhesion, can gradually release active oxygen to act, and has a long-lasting effect and gentle release.

[0046] In some optional embodiments, the mass proportion of the thickener in the deyellowing gel composition is 1.5%-15%.

[0047] In some exemplary embodiments, the mass proportion of the thickener in the deyellowing gel composition is 6%-14%.

[0048] In some embodiments, the weight percentage of the stabilizer in the deyellowing gel composition is 0.1%-3%; for example, it can be but not limited to 0.1%, 0.2%, 0.4%, 0.6%, 0.8%, 1%, 1.2%, 1.4%, 1.6%, 1.8%, 2%, 2.2%, 2.4%, 2.6%, 2.8%, 3% or the range between any two of the above weight percentages. When the weight percentage of the stabilizer is within the above range, the composition has strong stability and ensures a gel-like paste state; at the same time, it can reduce decomposition and failure during storage and transportation, and maintain the redox property of the composition when it is used.

[0049] In some optional embodiments, the weight proportion of the stabilizer in the deyellowing gel composition is 0.2%-4%.

[0050] As a possible embodiment, the redox agent includes hydrogen peroxide.

[0051] In some optional embodiments, the redox agent includes hydrogen peroxide, and the mass proportion of hydrogen peroxide in the hydrogen peroxide is 2%-70%; for example, it can be but not limited to 2%, 4%, 6%, 8%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60% / 65%, 70% or a range between any two of the above effective contents, etc.

[0052] In some embodiments, based on 100 parts by mass of the de-yellowing gel composition, the de-yellowing gel composition includes: 1-40 parts of an oxidizing-reducing agent, 1-20 parts of a thickener, 0.1-3 parts of a stabilizer, 0-2 parts of an auxiliary agent, 0-10 parts of a surfactant, 0-1 parts of a flavor, and 20-90 parts of a solvent.

[0053] As a non-limiting example, based on 100 parts by mass of the deyellowing gel composition, the parts by mass of the redox agent contained in the gel composition may be, but are not limited to, 1 part, 2 parts, 4 parts, 6 parts, 8 parts, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, 34 parts, 36 parts, 38 parts, 40 parts, or ranges between any of the above parts by mass.

[0054] Taking the deyellowing gel composition as 100 parts by mass, the thickener contained in the gel composition may be, but is not limited to, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts by mass or a range between any of the above parts by mass.

[0055] In some embodiments, based on 100 parts by mass of the deyellowing gel composition, the mass fraction of the thickener contained in the gel composition is 1.5 parts to 15 parts by mass.

[0056] As a possible implementation manner, based on 100 parts by mass of the deyellowing gel composition, the mass fraction of the thickener contained in the gel composition is 6 parts to 14 parts.

[0057] Based on 100 parts by mass of the deyellowing gel composition, the amount of the stabilizer contained in the gel composition may be, but is not limited to, 0.1 parts, 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1 parts, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts, 3 parts or ranges between any of the above parts by mass.

[0058] In some embodiments, based on 100 parts by mass of the deyellowing gel composition, the amount of the stabilizer contained in the gel composition is 0.2 parts to 0.4 parts by mass.

[0059] Taking the deyellowing gel composition as 100 parts by mass, the mass fraction of the auxiliary agent contained in the gel composition can be, but is not limited to, 0 parts, 0.05 parts, 0.1 parts, 0.2 parts, 0.4 parts, 0.6 parts, 0.8 parts, 1 parts, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, 2 parts or ranges between any of the above mass fractions.

[0060] It should be noted that when the mass fraction of the auxiliary agent is 0 parts, it means that the gel composition does not contain the auxiliary agent.

[0061] In some exemplary embodiments, based on 100 parts by mass of the deyellowing gel composition, the mass fraction of the auxiliary agent contained in the gel composition is 0.05 parts to 0.2 parts.

[0062] Taking the deyellowing gel composition as 100 parts by mass, the surfactant contained in the gel composition may be, but is not limited to, 0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10 or ranges between any of the above parts by mass.

[0063] It should be noted that when the mass fraction of the surfactant is 0 parts, it means that the gel composition does not contain a surfactant.

[0064] In some embodiments, based on 100 parts by mass of the deyellowing gel composition, the mass fraction of the surfactant contained in the gel composition is 1 part to 2 parts.

[0065] Taking the deyellowing gel composition as 100 parts by mass, the flavor contained in the gel composition may be, but is not limited to, 0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1 part or a range between any of the above parts by mass.

[0066] It should be noted that when the mass fraction of the flavor is 0 parts, it indicates that the gel composition does not contain any flavor.

[0067] As a possible implementation manner, based on 100 parts by mass of the deyellowing gel composition, the mass fraction of the flavor contained in the gel composition is 0.1 part to 0.25 part.

[0068] Taking the deyellowing gel composition as 100 parts by mass, the mass fraction of the solvent contained in the gel composition may be, but is not limited to, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts, 80 parts, 85 parts, 90 parts, 95 parts, 100 parts or ranges between any of the above mass fractions.

[0069] When the mass fractions of the redox agent, thickener, stabilizer, auxiliary agent, surfactant, flavor and solvent contained in the deyellowing gel composition are respectively within the above ranges, the composition has strong stability and good spreadability and adhesion, can easily cover and tightly adhere to the surfaces of various materials, and effectively exerts its renovation and deyellowing effect to restore the original color of the objects.

[0070] In some embodiments, the surfactant includes one or more of fatty alcohol polyoxyethylene ether, alkyl glucosides, C8-20 branched alcohol polyoxyethylene ether, dodecylaminopropionate, dodecylethoxysulfobetaine, dodecylhydroxypropylsulfobetaine, dodecylsulfopropylbetaine, octadecyldihydroxyethylamine oxide, cocamidopropylhydroxysulfobetaine, cocamidopropylamine oxide and laurylamidepropylamine oxide.

[0071] In some embodiments, the adjuvant includes one or more of sodium citrate, citric acid, and phosphoric acid.

[0072] As a possible implementation, the flavor includes one or more of liquid flavor and emulsion microcapsule flavor.

[0073] In some embodiments, the solvent comprises water.

[0074] One or more embodiments of the present application provide a method for preparing a yellowing-removing gel composition, which can be used to prepare the above-mentioned yellowing-removing gel composition. The preparation method comprises the following steps:

[0075] Melting the thickener to prepare phase A; preparing a solution containing a stabilizer and a solvent as phase B; adding an oxidation-reduction agent to the phase B to prepare a mixture C; adding phase A to the mixture C, and stirring homogeneously to prepare a yellowing-removing gel composition;

[0076] Among them, the thickener includes a mixture of C16-18 fatty alcohol and cetearyl alcohol polyoxyethylene ether, the mass ratio of C16-18 fatty alcohol and cetearyl alcohol polyoxyethylene ether is (2-7):1, and the stabilizer includes ethylenediamine disuccinic acid, ethylenediaminetetramethylenephosphonic acid, glutamic acid diacetic acid, hydroxyethylidene diphosphonic acid and one or more of the corresponding salts of the above substances.

[0077] In some embodiments, the pressure of the homogenous stirring is stirring at normal pressure.

[0078] As a possible implementation manner, the rotation speed of homogenizing stirring is 1000r / min-3500r / min; for example, it can be but not limited to 1000r / min, 1500r / min, 2000r / min, 2500r / min, 3000r / min, 3500r / min, etc.

[0079] In some optional embodiments, the homogenizing stirring time is 5 minutes.

[0080] In some embodiments, phase B also includes surfactants and adjuvants.

[0081] One or more embodiments of the present application provide a use of the above-mentioned yellowing-removing gel composition in preparing a skin care product with yellowing-removing effect.

[0082] The technical scheme of the present invention is described in detail below in conjunction with specific embodiments. 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. The experimental methods for which specific conditions are not specified in the following embodiments are preferably referred to the guidance given in the present invention, and can also be carried out according to the experimental manual or conventional conditions in the art, or according to the conditions recommended by the manufacturer, or with reference to experimental methods known in the art.

[0083] In the following specific embodiments, the measured parameters of raw material components may have slight deviations within the range of weighing accuracy unless otherwise specified. For temperature and time parameters, acceptable deviations caused by instrument test accuracy or operation accuracy are allowed.

[0084] It should be noted that the raw materials used in the following test examples, embodiments and comparative examples can all be purchased from the market.

[0085] 1. Preparation of yellowing gel composition

[0086] 1. Formula composition

[0087] The formulation compositions of Examples 1-10 are shown in Table 1-1, and the formulation compositions of Examples 11-13 and Comparative Examples 1-7 are shown in Table 1-2.

[0088] Table 1-1

[0089]

[0090] Table 1-2

[0091]

[0092] 2. Preparation process

[0093] The preparation process of Examples 1-13, Comparative Example 1 and Comparative Examples 4-7 is as follows: heating the thickener to 60°C for melting and heat preservation to prepare phase A; preparing a solution of water, stabilizer, auxiliary agent and surfactant, and heating it to 62°C and stirring and mixing evenly to prepare phase B; adding hydrogen peroxide to phase B to prepare mixture C; adding phase A to mixture C, starting homogenization and stirring for 5 minutes to prepare a semi-finished product, the homogenization pressure is normal pressure, and the speed is 2000r / min; cooling the semi-finished product, adding flavor, stirring evenly, and preparing a deyellowing gel composition.

[0094] The preparation process of Comparative Example 2-3 is as follows: prepare a solution of water, thickener, stabilizer, auxiliary agent and surfactant, and heat and stir to mix evenly to obtain phase A; add hydrogen peroxide to phase A, start homogenization and stir for 5 minutes to obtain mixture B; cool down, add flavor, stir evenly to obtain the composition.

[0095] 2. Performance Test

[0096] 1. Gel morphology stability test

[0097] Test method: The yellowing removal gel composition was placed in a light-proof environment at a temperature of 45° C. for 2 months, and the material was observed with the naked eye after stabilization. The test results of Examples 1-13 and Comparative Examples 1-7 are shown in Tables 2-3, respectively.

[0098] Table 2

[0099]

[0100] Table 3

[0101]

[0102] From the comparison of the results in Table 2 and Table 3, it can be seen that the gel composition prepared in the present application has better texture and better stability.

[0103] 2. Active oxygen stability test

[0104] Test method: The anti-yellowing gel composition with renovation function of the present invention is placed in a light-proof environment at a temperature of 45°C for 2 months, and the hydrogen peroxide content before and after stability is tested according to the hydrogen peroxide content test method in "GB / T 1616 Industrial Hydrogen Peroxide". The active oxygen stability refers to the ratio of the hydrogen peroxide content after stability to the initial hydrogen peroxide content before stability. The test results of Examples 1-13 and Comparative Examples 1-7 are shown in Tables 4-5, respectively.

[0105] Table 4

[0106]

[0107] Table 5

[0108]

[0109] It can be seen from the results in Tables 4-5 that the redox agent in the gel composition prepared in the present application has better stability.

[0110] 3. Yellowing effect test

[0111] Testing instrument: Whiteness meter

[0112] Test method: Expose smooth white PU leather to purple light for 96 hours to make it evenly yellow. Cut into 6*6cm square test pieces respectively, and evenly apply a layer of the composition on the square test pieces, and hang them under natural light or sunlight (while observing the adhesion effect of the composition) for 6 hours; wipe the composition clean with a clean wet towel respectively, and test the whiteness difference of the leather before and after. The test results of Examples 1-13 and Comparative Examples 1-8 are shown in Table 6 respectively.

[0113] Table 6

[0114]

[0115] From the comparison of the results of Examples 1-13 and Comparative Examples 1-7 in Table 6, it can be seen that the gel composition prepared in the present application has an excellent yellowing removal effect.

[0116] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments 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.

[0117] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A yellowing gel composition, characterized in that: It includes an oxidation-reduction agent, a thickener, a stabilizer and a solvent; the thickener includes a mixture of C16-18 fatty alcohol and cetearyl alcohol polyoxyethylene ether, the mass ratio of the C16-18 fatty alcohol to the cetearyl alcohol polyoxyethylene ether is (2-7):1, and the stabilizer includes ethylenediamine disuccinic acid, ethylenediaminetetramethylenephosphonic acid, glutamic acid diacetic acid, hydroxyethylidene diphosphonic acid and one or more of the corresponding salts of the above substances.

2. The anti-yellowing gel composition according to claim 1, characterized in that: The mass proportion of the thickener in the deyellowing gel composition is 1%-20%, and can be optionally 1.5%-15%.

3. The anti-yellowing gel composition according to claim 1, characterized in that: The mass proportion of the stabilizer in the deyellowing gel composition is 0.1%-3%.

4. The anti-yellowing gel composition according to claim 1, characterized in that: The redox agent includes hydrogen peroxide; Optionally, the redox agent includes hydrogen peroxide, and the mass proportion of hydrogen peroxide in the hydrogen peroxide is 2%-70%.

5. The anti-yellowing gel composition according to claim 1, characterized in that: Taking the de-yellowing gel composition as 100 parts by mass, the de-yellowing gel composition includes: 1-40 parts of an oxidizing-reducing agent, 1-20 parts of a thickener, 0.1-3 parts of a stabilizer, 0-2 parts of an auxiliary agent, 0-10 parts of a surfactant, 0-1 parts of an essence, and 20-90 parts of a solvent.

6. The anti-yellowing gel composition according to claim 5, characterized in that: The surfactant includes one or more of fatty alcohol polyoxyethylene ether, alkyl glucoside, C8-20 branched alcohol polyoxyethylene ether, dodecylaminopropionate, dodecylethoxysulfobetaine, dodecylhydroxypropylsulfobetaine, dodecylsulfopropylbetaine, octadecyldihydroxyethylamine oxide, cocamidopropylhydroxysulfobetaine, cocamidopropylamine oxide and laurylamidepropylamine oxide.

7. The anti-yellowing gel composition according to claim 5, characterized in that: The auxiliary agent includes one or more of sodium citrate, citric acid and phosphoric acid.

8. The anti-yellowing gel composition according to any one of claims 5 to 7, characterized in that: The flavor includes one or more of liquid flavor and emulsion microcapsule flavor.

9. The anti-yellowing gel composition according to claim 1, characterized in that: The solvent includes water.

10. A method for preparing a yellowing-removing gel composition, characterized in that: The steps include: Melt the thickener to prepare phase A; preparing a solution comprising a stabilizer and a solvent as phase B; Adding a redox agent to the phase B to prepare a mixture C; Adding the phase A to the mixture C and stirring them homogeneously to prepare the yellowing-removing gel composition; Among them, the thickener includes a mixture of C16-18 fatty alcohol and cetearyl alcohol polyoxyethylene ether, the mass ratio of the C16-18 fatty alcohol and the cetearyl alcohol polyoxyethylene ether is (2-7):1, and the stabilizer includes ethylenediamine disuccinic acid, ethylenediaminetetramethylenephosphonic acid, glutamic acid diacetic acid, hydroxyethylidene diphosphonic acid and one or more of the corresponding salts of the above substances.

11. Use of the anti-yellowing gel composition according to any one of claims 1 to 9 in preparing a skin care product with anti-yellowing effect.

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