Color stabilizer for perfume as well as preparation method and application of color stabilizer

Abstract

The invention belongs to the technical field of daily chemical products, and particularly relates to a color stabilizer for perfume as well as a preparation method and application thereof. The color stabilizer is prepared from the following components in parts by weight: 40 to 70 parts of ethylhexyl methoxycinnamate, 20 to 50 parts of diethylamino hydroxybenzoyl hexyl benzoate, 5 to 15 parts of octotriazole and 0.1 to 1 part of benzotriazolyl dodecyl p-cresol. The composite stabilizer can synchronously realize UVA + UVB full-wave band blocking and built-in light stabilization functions only through one-time compounding, does not need to additionally add a light stabilizer, has double effects of oxidation resistance and ultraviolet absorption, simplifies the use of the stabilizer in a perfume formula, and effectively improves the color durability and overall stability of the product.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of daily chemical products, and particularly relates to a color stabilizer for perfume, and a preparation method and application thereof. BACKGROUND

[0002] As a daily chemical product with olfactory enjoyment and aesthetic value, the color stability of perfume is one of the key indicators for measuring product quality. During storage and use, perfume is often affected by environmental factors such as ultraviolet radiation, temperature fluctuations, and oxygen contact, resulting in oxidation, degradation, or photosensitive reactions, which causes the color to gradually fade, turn yellow, or even become turbid, seriously affecting the sensory experience and market acceptance of the product.

[0003] To delay the discoloration of perfume, the existing technology usually uses the addition of sunscreen agents to resist the damage of ultraviolet rays to active ingredients in perfume. However, the commonly used single sunscreen agent has obvious defects in the perfume system: on the one hand, its protective effect on the color of perfume is unstable, and it is difficult to continuously inhibit the discoloration of perfume under different light intensities and temperature conditions; on the other hand, some sunscreen agents are in powder form, and have poor solubility in oil-soluble or alcohol-soluble perfume bases, which easily causes precipitation, affecting the appearance transparency and use quality of the perfume, and further reducing the effective concentration of the sunscreen agent, further weakening the protective effect on the color of the perfume.

[0004] Therefore, it is a key requirement to develop a composite stabilizer suitable for perfume system, with good solubility and stable color protection effect. SUMMARY

[0005] The purpose of the present application is to overcome the deficiencies of the prior art and provide a color stabilizer for perfume, which is in the form of an oil-like liquid by compounding specific components, and can effectively control or delay the discoloration of perfume.

[0006] To achieve the above purpose, the technical solution adopted by the present application includes: In a first aspect, the present application provides a color stabilizer, which includes the following components: ethylhexyl methoxy cinnamate, diethyl amino hydroxybenzoyl hexyl benzoate, octocrylene, and benzotriazolyl dodecyl p-cresol.

[0007] Preferably, the color stabilizer includes the following components by weight: ethylhexyl methoxy cinnamate 40-70 parts, diethyl amino hydroxybenzoyl hexyl benzoate 20-50 parts, octocrylene 5-15 parts, and benzotriazolyl dodecyl p-cresol 0.1-1 part.

[0008] The present application prepares a color stabilizer by compounding methoxy cinnamic acid ethylhexyl ester (OMC), diethyl amino hydroxybenzoyl hexyl benzoate (DHHB, avobenzone derivative), octinoxate (Uvinul T-150) and benzotriazolyl dodecyl p-methyl phenol (BDHC) in a preferred dosage range. The color stabilizer can effectively realize the dual mechanism of "triple wave band" synergistic blocking and antioxidant-light stability integration. First, through the precise matching of each component, the overall coverage of the 280-400 nm ultraviolet wave band is realized: OMC is responsible for 280-320 nm (UVB region), DHHB covers 320-400 nm (UVA region), and octinoxate and BDHC jointly act, not only supplementing the key gap of 340-360 nm, but also forming a charge transfer complex, significantly enhancing the ultraviolet absorption intensity and light stability, so as to achieve full-wave band protection without blind area. Secondly, the hindered phenol structure of BDHC can effectively remove dissolved oxygen in the system before light, reduce the risk of photooxidation, and play a role in pre-antioxidation; after light, it is converted into a quinone structure, continues to absorb UVA wave band ultraviolet rays, and forms a secondary protection mechanism of "pre-antioxidation and post-supplement absorption".

[0009] Therefore, the composite stabilizer of the present application can simultaneously realize UVA+UVB full-wave band blocking and built-in light stabilization function by only one compounding, without additional addition of light stabilizer, and has the dual effects of antioxidant and ultraviolet absorption, simplifying the use of stabilizer in perfume formula, and effectively improving the color durability and overall stability of the product.

[0010] Preferably, the color stabilizer comprises the following components by weight: methoxy cinnamic acid ethylhexyl ester 45-65 parts, diethyl amino hydroxybenzoyl hexyl benzoate 25-45 parts, octinoxate 7-12 parts and benzotriazolyl dodecyl p-methyl phenol 0.2-0.8 parts.

[0011] Preferably, the color stabilizer comprises the following components by weight: methoxy cinnamic acid ethylhexyl ester 45-65 parts, diethyl amino hydroxybenzoyl hexyl benzoate 25-45 parts, octinoxate 7-12 parts and benzotriazolyl dodecyl p-methyl phenol 0.2-0.8 parts.

[0012] The use amount and ratio of the four components are the core to realize the "full-waveband protection-antioxidation synergy-long-term stability", which directly determines whether the color stabilizer can effectively control or delay the discoloration of perfume, and ultimately ensures the stability of the color of the perfume. If the ratio of the four components is unbalanced, it will lead to "leakage" in the ultraviolet protection waveband, so that it cannot fully block the key waveband that causes discoloration, and then the perfume is still prone to fading and other problems under light. In addition, the discoloration in the perfume is not only caused by ultraviolet rays, but also caused by thermal oxidation, microbial metabolism, etc. Among the four components, the phenolic hydroxyl structure of BDHC has strong antioxidant activity and can scavenge free radicals generated by thermal oxidation; OMC, DHHB and Uvinul T-150 can indirectly reduce the oxidation pressure by reducing the photo-induced oxidation reaction; if the proportion of BDHC is too low, it cannot effectively scavenge the free radicals of thermal oxidation or photo-oxidation by-products, which will lead to the continuous accumulation of oxidation reaction and accelerate the discoloration of the perfume; if the proportion is too high, it may compete with other ultraviolet absorbers for the action site, thereby reducing the overall protection efficiency; and the proportions of OMC, DHHB and Uvinul T-150 need to be matched with BDHC to form a closed loop of "light protection-free radical scavenging", so as to balance the dual risks of photo-oxidation and thermal oxidation.

[0013] It is found through experiments that when the four components are compounded in the best ratio defined above, the UVA / UVB full-waveband synergistic protection can be effectively realized, the photo-induced discoloration risk can be maximally reduced, and the long-term protection effect of the stabilizer can be effectively ensured, so that the discoloration acceleration caused by the premature failure of a certain component can be avoided.

[0014] In a second aspect, the application provides a preparation method of the color stabilizer, which comprises the following steps: The components are mixed, heated to 45-60 DEG C, stirred and dissolved uniformly, and then cooled after standing.

[0015] The color stabilizer provided by the application can form a stable oily liquid system through reasonable collocation of components by only mixing and heating treatment process, so that the problems of poor solubility and precipitation caused by poor compatibility of some powdery components in the prior art are avoided.

[0016] In a third aspect, the application provides application of the color stabilizer in daily chemical products.

[0017] Preferably, the daily chemical product comprises perfume.

[0018] In a fourth aspect, the application provides a perfume comprising the color stabilizer.

[0019] Preferably, the mass percentage content of the color stabilizer in the perfume is 0.1-1%.

[0020] Compared with the prior art, the application has the following beneficial effects: (1) The ultraviolet absorbers commonly used in the prior art often have the problem of incomplete waveband coverage, especially a "gap" in protection is easily formed between UVA (320-400 nm) and UVB (280-320 nm) at 340-360 nm, leading to the possibility of discoloration of perfume ingredients due to irradiation of specific wavebands of ultraviolet light. The present application, through the synergistic design of "triple waveband", precisely fills the above-mentioned gap, realizes full-waveband absorption of 280-400 nm without blind area, and more comprehensively blocks the damage of ultraviolet light to the color of perfume from the source.

[0021] (2) In the prior art, ultraviolet protection, antioxidant and light stabilization functions are usually achieved by adding multiple independent ingredients, which not only increases the complexity of the formula, but also may affect stability due to compatibility problems between ingredients. The BDHC described in the present application has both antioxidant and secondary light absorption functions, and in combination with the synergistic effect of other ingredients, it realizes the integration of "antioxidant-light stabilization" protection, without the need for additional light stabilizers or antioxidants, significantly simplifying the formula composition and reducing the potential risks caused by multiple ingredient compounding.

[0022] (3) In the prior art, incomplete ultraviolet absorption or insufficient antioxidant capacity often leads to gradual discoloration of perfume during long-term storage. The present application, through full-waveband absorption and the secondary protection mechanism of "antioxidation first, then absorption", effectively delays the influence of light and oxidation on the color of perfume, significantly improving the long-term storage stability of perfume. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The color stabilizer prepared for Comparative Examples 2-4 and 6 was added to the base colored perfume, and the color comparison chart before and after the accelerated light aging test (left for before, right for after). DETAILED DESCRIPTION

[0024] In order to better illustrate the purpose, technical scheme and advantages of the present application, the present application will be further described below in conjunction with specific examples. Those skilled in the art should understand that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0025] Unless otherwise specified, the raw materials involved in the following examples and comparative examples are all commercially available general materials.

[0026] Examples 1-5 Examples 1-5 provide a color stabilizer, the formula of which is shown in Table 1. The preparation method of the color stabilizer comprises the following steps: Ethylhexyl cinnamate, diethylamino hydroxybenzoyl hexyl benzoate, octinoxate, benzotriazolyl dodecyl p-methylphenol were added into a container and mixed, the mixed material was heated to 45-60℃ while stirring until dissolved uniformly, and then cooled to obtain the color stabilizer.

[0027] Table 1 Formulation table of color stabilizers according to examples 1-5 (parts by weight) Comparative examples 1-8 Comparative examples 1-8 provide a color stabilizer, the formulation of which is shown in Table 2. The preparation method of the color stabilizer is the same as that of example 1, the only difference being the formulation.

[0028] Table 2 Formulation table of color stabilizers according to comparative examples 1-8 (parts by weight) Comparative example 9 This comparative example provides a color stabilizer, which is different from example 1 only in that an equal amount of bis-ethylhexyloxyphenol methoxyphenyl triazine is used to replace benzotriazolyl dodecyl p-methylphenol.

[0029] Comparative example 10 This comparative example provides a color stabilizer, which is different from example 1 only in that an equal amount of methylene bis-benzotriazolyl tetramethylbutyl phenol is used to replace octinoxate.

[0030] Effect example 1 This effect example takes the color stabilizers prepared in examples 1-5 and comparative examples 1-10 as test samples, compares the color changes of the same kind of perfume containing different test samples under specific light conditions through accelerated light aging test, quantitatively evaluates the color protection effect of the stabilizer, and the specific test method is as follows: 1. Sample preparation: Take the basic colored perfume (the basic perfume includes the following components by mass percentage: alcohol 72%, essence 15%, pigment 33# red (CI 17200) 0.00012%, and the balance is water), fill it into a glass sample bottle (15mL per bottle), add the test sample to the basic perfume, the mass percentage of the test sample in the basic perfume is 0.5%, mix uniformly, and then balance in a 25℃ constant temperature water bath for 2h, and the basic colored perfume without adding sample is used as a blank group; 2. Initial color parameter determination: Turn on the spectrophotometer, preheat for 30 min, and calibrate; pour the balanced blank group and test group samples into quartz cuvettes, avoiding bubbles; determine the CIE Lab value of each sample, continuously determine each sample for 3 times, and take the average value as the initial color parameter (denoted as L0*, a0*, b0*). 3. Accelerated light aging test: Set the relevant parameters: light source UVA-340 nm lamp tube; irradiance 0.51 W / m2; blackboard temperature 45℃; relative humidity 50%±5%; Put the quartz bottle containing the sample into the sample holder of the aging box, close the door, start the aging program; after aging for 24 h, take out the sample, balance it in a 25℃ constant temperature water bath for 2 h, and determine the CIE Lab value of each sample after aging (denoted as L t *、a t *、b t *), continuously determine each sample for 3 times, and take the average value. Calculate the total color difference ΔE*ab before and after aging by the color difference formula (the smaller the total color difference, the better the color stability), and the formula is as follows: The specific test results are shown in Table 3.

[0031] Table 3 The results in Table 3 show that the color stabilizer prepared by the technical scheme of the present application can effectively inhibit the color change of colored perfume during the light aging process, significantly improve the stability, and play an excellent color protection effect, especially the color stabilizer described in Example 1 has the best color stability effect, and almost no color change can be detected.

[0032] The ΔE*ab values (3.86-4.95) of the comparative examples 1-4, each of which lacks one of the four specific components of ethylhexyl methoxy cinnamate, oxybenzone, octinoxate, and benzotriazolyl dodecyl p-methyl phenyl, are significantly higher than those of the examples, indicating that the four components are not simply additive, but have a synergistic effect, and that the absence of any one of them will result in a significant decrease in stability, proving that all four components are necessary for achieving the best color stability effect; the ΔE*ab values (6.76, 8.83) of the comparative examples 5-6, each of which lacks two of the four components, are not only much higher than those of the examples, but are even close to those of the blank group, further verifying the necessity of the synergistic effect of the four components, and that the absence of two of them completely destroys the synergistic system and almost completely eliminates the stability. The ΔE*ab values of the comparative examples 7-8, each of which has a ratio of the four components that exceeds the preferred range of the present application, are also significantly higher than those of the examples, indicating that simply ensuring the completeness of the component types is not enough to achieve the best results, and that the optimization of the dosage ratio is also crucial, and that only at the preferred ratio can the synergistic effect of the four components be maximized, and that an imbalance in the ratio will significantly weaken the stability. The ΔE*ab values of the comparative examples 9-10, each of which uses other components with similar properties to replace the specific components of the present application, are still higher than those of the examples, indicating that the four components selected by the present application have structural specificity, and that their chemical properties and light stabilization mechanisms are unmatched by other replacement components, and that the replacement will result in the failure of the synergistic effect and a decrease in stability.

[0033] Effect Example 2 This effect example uses the color stabilizer prepared in examples 1-5 as the test sample to test its appearance, physical and chemical indicators, and stability.

[0034] The test sample was placed in a high temperature environment of 45±1℃ and a low temperature environment of -15±1℃ for 1 month, and was tested for 6 cycles of high and low temperature cycling: 24 hours at each of 45±1℃ and -15±1℃ was one cycle, and the sample was observed for problems such as delamination and precipitation. The specific test results are shown in Table 4.

[0035] Table 4 The results in Table 4 show that the color stabilizer of the present application has good stability and is not prone to problems such as delamination and precipitation in different environments, thereby effectively maintaining the functional properties of the product.

[0036] Finally, it should be noted that the above examples are intended to illustrate the technical solutions of the present application, but not to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A color stabilizer, characterized in that, The color stabilizer comprises the following components: ethylhexyl methoxycinnamate, hexyl diethylamino hydroxybenzoyl benzoate, octetrazol, and benzotriazolyl dodecyl p-cresol.

2. The color stabilizer as described in claim 1, characterized in that, The color stabilizer comprises the following components in parts by weight: 40-70 parts of ethylhexyl methoxycinnamate, 20-50 parts of diethylamino hydroxybenzoyl hexyl benzoate, 5-15 parts of octotriazole, and 0.1-1 parts of benzotriazolyl dodecyl p-cresol.

3. The color stabilizer as described in claim 2, characterized in that, The color stabilizer comprises the following components in parts by weight: 45-65 parts of ethylhexyl methoxycinnamate, 25-45 parts of diethylamino hydroxybenzoyl hexyl benzoate, 7-12 parts of octriazole, and 0.2-0.8 parts of benzotriazolyl dodecyl p-cresol.

4. The color stabilizer as described in claim 3, characterized in that, The color stabilizer comprises the following components in parts by weight: 50 parts of ethylhexyl methoxycinnamate, 40 parts of diethylamino hydroxybenzoyl hexyl benzoate, 9.5 parts of octriazole, and 0.5 parts of benzotriazolyl dodecyl p-cresol.

5. The method for preparing the color stabilizer according to any one of claims 1-4, characterized in that, Includes the following steps: Mix the components, heat to 45-60℃, stir until dissolved and uniform, and let stand to cool.

6. The application of the color stabilizer as described in any one of claims 1-4 in daily chemical products.

7. The application as described in claim 6, characterized in that, The aforementioned daily chemical products include perfumes.

8. A perfume, characterized in that, The perfume includes the color stabilizer as described in any one of claims 1-4.

9. The perfume as described in claim 8, characterized in that, The color stabilizer has a mass percentage of 0.1-1% in the perfume.

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