A long-lasting fragrance retaining composite essential oil thickening composition and a method for preparing the same

Abstract

The present application relates to the field of daily chemical products, and particularly relates to a long-lasting fragrance composite essential oil thickening composition and a preparation method thereof. The long-lasting fragrance composite essential oil thickening composition comprises an essential oil phase and a thickening phase; the essential oil phase at least comprises plant oil and plant extract; and the thickening phase at least comprises a humectant, an organic acid ester, a cocamide and its derivative, and an auxiliary agent. The composite essential oil thickening composition provided in the present application can be effectively applied to washing and protecting products, can play a good fragrance retention and thickening performance, and the essential oil phase can be applied to skin care products at the same time, plays the same fragrance flavor and fragrance retention effect, and has the effect of avoiding jelly phenomenon.

Description

Technical Field

[0001] This invention relates to the field of daily chemical products, and in particular to a long-lasting fragrance compound essential oil thickening composition and its preparation method. Background Technology

[0002] As people's quality of life improves, the frequency of use of daily chemical products such as shampoo, shower gel, and facial cleanser is increasing, and as cleansing cosmetics, they have become essential necessities in people's lives. With product development, people's demands for these products are no longer limited to skin and hair cleansing; they also have higher requirements for fragrance, quality, lifespan, and shelf life. Safety, gentleness, non-irritation, fresh and long-lasting fragrance, and naturally sourced ingredients have become important requirements for modern cleansing and care products.

[0003] Existing technology, Chinese patent CN202210107596.X, provides a shampoo composition with anti-dandruff, anti-itch, and oil-controlling effects. It mainly uses a mixture of various surfactants, anti-dandruff agents, fragrances, and other additives. It claims that the plant extracts and antibacterial agents added to the shampoo composition effectively control oil, and that the combined effect of other additives significantly improves the stability and applicability of the shampoo. However, the simple use of fragrances does not solve the problems of fragrance retention and aroma complexity, and the composition does not offer a solution to the common "jelly-like" appearance.

[0004] Therefore, in order to solve the above problems, this application provides a long-lasting fragrance compound essential oil thickening composition for use in the preparation of personal care products such as shampoo and shower gel. Summary of the Invention

[0005] To address the aforementioned problems, the first aspect of the present invention provides a long-lasting fragrance compound essential oil thickening composition, the composition comprising an essential oil phase and a thickening phase; the essential oil phase comprising at least plant oils and plant extracts; the thickening phase comprising at least a humectant, organic acid esters, cocamide and its derivatives, and auxiliaries.

[0006] As a preferred embodiment, the mass ratio of the essential oil phase to the thickening phase is 0.8–1.2:1.5–2.2.

[0007] As a preferred embodiment, the mass ratio of the essential oil phase to the thickening phase is 1.11:1.7.

[0008] As a preferred embodiment, the vegetable oil is at least one of olive oil, jojoba seed oil, tea seed oil, rosehip oil, shea butter, lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, lemon oil, litsea fruit oil, lemongrass leaf oil, geranium capillaris oil, Rosa damascena flower oil, grape seed oil, camellia oil, and coconut oil.

[0009] As a preferred embodiment, the vegetable oil is a mixture of lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, litsea fruit oil, lemongrass leaf oil, capitulata oil, and Rosa damascena flower oil.

[0010] As a preferred embodiment, the mass ratio of lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, litsea oil, lemongrass fruit oil, lemongrass leaf oil, geranium capillaris oil, and Rosa damascena flower oil is 5.6–6.5: 0.7–0.8: 0.5–0.9: 0.1–0.6: 0.7–0.8: 0.3–0.6: 0.2–0.4: 0.2–0.5: 0.1–0.3.

[0011] As a preferred embodiment, the mass ratio of lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, limonene fruit oil, lemongrass leaf oil, capitulata oil, and Rosa damascena flower oil is 5.6:0.7:0.6:0.3:0.7:0.6:0.4:0.4:0.2.

[0012] As a preferred embodiment, the plant extract is at least one selected from the following: Lippia citriodora leaf extract, Curcuma longa root extract, Withania somnifera extract, Centella asiatica (L.) Urb extract, Backhousia citriodora leaf extract, Pelargonium graveolens extract, Salvia miltiorrhiza Bunge extract, Citrus paradisi Macf extract, and Portulaca oleracea L. extract.

[0013] As a preferred embodiment, the plant extracts are Lippia Citriodora leaf extract, Backhousia Citriodora leaf extract, and Pelargonium Graveolens extract.

[0014] As a preferred embodiment, the mass ratio of the plant oil to the plant extract is 0.2–8:0.01–1.

[0015] As a preferred embodiment, the mass ratio of the plant oil to the plant extract is 0.9–0.95: 0.01–0.1.

[0016] As a preferred embodiment, the humectant is at least one of glycerin, trehalose, 1,2-pentanediol, glyceryl polyacrylate, caprylyl glycol, propylene glycol, squalene, and glyceryl polyether-26.

[0017] As a preferred option, the moisturizer is glycerin.

[0018] As a preferred embodiment, the organic ester is a mixture of methyl cocoate and PEG-120 methyl glucoside dioleate in a mass ratio of 4–6:18–22.

[0019] As a preferred embodiment, the organic ester is methyl cocoate and PEG-120 methyl glucoside in a mass ratio of 5:19-20.

[0020] As a preferred embodiment, the adjuvant is at least one of tocopherol, tocopheryl acetate, cetearyl alcohol, and octyl polymethylsiloxane.

[0021] As a preferred embodiment, the adjuvant is tocopherol or tocopherol acetate.

[0022] As a preferred option, the adjuvant is tocopherol.

[0023] As a preferred embodiment, the cocoamide and its derivatives are a mixture of cocoamide MEA and cocoamide methyl MEA in a mass ratio of 8-10:4-5.

[0024] As a preferred embodiment, the cocoamide and its derivatives are cocoamide MEA and cocoamide methyl MEA in a mass ratio of 9.5:4.5.

[0025] In this application, a thickening phase is prepared using raw materials such as cocamide MEA, methyl cocoate, cocamide methyl MEA, and glycerin. This not only provides excellent thickening effects but also further improves the stability of the composition / product and avoids the common "jelly phenomenon." The applicant believes that when the mass ratio of cocamide MEA to cocamide methyl MEA is 9.5:4.5 and the mass ratio of methyl cocoate to PEG-120 methyl glucoside dioleate is 5:19-20, the resulting thickening phase not only exhibits excellent thickening properties but also, through their combined action, reduces the impact on the transparency of the product composition / product, decreasing the number of refractions of light within the composition. Furthermore, methyl cocoate, cocamide MEA, and cocamide methyl MEA can further reduce the carbon chain entanglement strength of PEG-120 and tocopherol in the composition, preventing excessive chain segment entanglement and aggregation that leads to final phase separation, thereby effectively avoiding the jelly phenomenon.

[0026] The second aspect of the present invention provides a method for preparing the above-mentioned long-lasting fragrance compound essential oil thickening composition, the steps of which include the following steps: (1) adding the required plant oil and plant extract into a mixing container, heating to 50-60°C and stirring to mix evenly to obtain the essential oil phase; (2) homogenizing the moisturizer, organic acid ester, cocoamide and its derivatives and auxiliaries in another homogenizing container to obtain the thickening phase; (3) mixing the essential oil phase and the thickening phase evenly in the required proportion to obtain the composition.

[0027] A third aspect of the present invention provides an application of the above-mentioned long-lasting fragrance compound essential oil thickening composition, including its application in the preparation of washing and care products and skin care products.

[0028] As a preferred embodiment, this application provides the application of a compound essential oil thickening composition in shampoo, the formulation of which is shown in Table 1 below:

[0029] Table 1

[0030]

[0031]

[0032] As a preferred embodiment, the preparation steps of the above-mentioned shampoo include: (1) adding phase A to the reaction vessel in sequence, stirring and heating to 80-90°C, and dissolving evenly; (2) adding phases B, C and thickening phase to the reaction vessel, stirring and dissolving evenly; (3) dispersing phase D evenly in advance, and then fully mixing the multiphases in steps (1) and (2) before adding phase D and mixing evenly; (4) when the temperature drops to below 45°C, adding essential oil phase, mixing evenly, and then discharging to obtain the shampoo.

[0033] Beneficial effects:

[0034] 1. The composite essential oil thickening composition provided in this application can be effectively applied to washing and care products, and can achieve good fragrance retention and thickening properties. At the same time, the essential oil can also be applied to skin care products, achieving the same fragrance flavor and fragrance retention effect.

[0035] 2. The composite essential oil thickening composition provided in this application has a reasonable combination of components, good compatibility between components, and a highly efficient composite thickener that makes the overall stability of the formula high. Similarly, the washing and care products prepared using the composition have excellent stability and suitable viscosity.

[0036] 3. The compound essential oil thickening composition provided in this application, while focusing on the fragrance retention and stability of the composition, can also solve the jelly phenomenon that is easy to occur in existing technologies / products, and has extremely high versatility in washing and care products and skin care products.

[0037] 4. The composite essential oil thickening composition provided in this application, which uses raw materials such as cocamide MEA, methyl cocoate, cocamide methyl MEA, and glycerin to prepare the thickening phase, can achieve a good product thickening effect. The thickening phase can not only have excellent thickening effect, but also reduce the impact on the transparency of the product composition / product through their joint action, reduce the number of times light is refracted in the composition, and avoid the impact of the composition on the transparency of transparent products.

[0038] 5. The composite essential oil thickening composition provided in this application, when the mass ratio of cocamide MEA and cocamide methyl MEA is 9.5:4.5 and the mass ratio of methyl cocoate and PEG-120 methyl glucoside dioleate is 5:19-20, can further reduce the carbon chain entanglement strength of PEG-120 and tocopherol in the composition, avoid the final phase separation phenomenon caused by excessive entanglement and aggregation of chain segments, and thus effectively avoid the jelly phenomenon. Attached Figure Description

[0039] Figure 1 This refers to the shampoo product with a jelly-like appearance prepared in Comparative Example 2 of this application.

[0040] Figure 2 This refers to the shampoo product without a jelly-like appearance obtained in Example 1 of this application. Detailed Implementation

[0041] Example 1

[0042] The first aspect of this embodiment provides a long-lasting fragrance compound essential oil thickening composition, the composition comprising an essential oil phase and a thickening phase; the essential oil phase comprises lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, litsea fruit oil, lemon lemongrass leaf oil, geranium capillaris oil, Rosa damascena flower oil, Lippia citriodora leaf extract, Lemon broom leaf extract, and Geranium geranium extract, with a mass ratio of 5.6:0.7:0.6:0.3:0.7:0.6:0.4:0.4:0.2:1:0.2:0.4; the thickening phase comprises cocamide MEA, methyl cocoate, cocamide methyl MEA, glycerin, PEG-120 methyl glucoside dioleate, and tocopherol, with a mass ratio of 9.5:0.5:4.5:0.5:1.9995:0.0005.

[0043] The mass ratio of the essential oil phase to the thickening phase is 1.11:1.7.

[0044] The leaf extract of Lippiacitriodora was purchased from Guangdong Zhuoneng Biotechnology Co., Ltd.

[0045] The leaf extracts of BACKHOUSIA CITRIODORA and PELARGONIUM GRAVEOLENS were purchased from Guangdong Zhuoneng Biotechnology Co., Ltd.

[0046] The second aspect of this embodiment provides a method for preparing the above-mentioned long-lasting fragrance compound essential oil thickening composition, the steps of which include: (1) adding lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, limonene fruit oil, lemon lemongrass leaf oil, geranium capillaris oil, Rosa damascena flower oil, Lippia citriodora leaf extract, lemon basil leaf extract, and geranium geranium extract to a mixing container, heating to 55°C and stirring until uniformly mixed to obtain the essential oil phase; (2) homogenizing cocamide MEA, methyl cocoate, cocamide methyl MEA, glycerin, PEG-120 methyl glucoside dioleate, and tocopherol in another homogenizing container to obtain the thickening phase; (3) mixing the essential oil phase and the thickening phase uniformly in proportion to obtain the composition.

[0047] The third aspect of this embodiment provides an application of a shampoo containing the above-mentioned long-lasting fragrance complex essential oil thickening composition, the formulation of which is shown in Table 2 below:

[0048] Table 2

[0049]

[0050]

[0051] The preparation method of the above shampoo includes the following steps: (1) Add phase A to the reaction vessel, stir and heat to 85°C, and dissolve evenly; (2) Add phases B, C and thickening phase to the reaction vessel, stir and dissolve evenly; (3) Disperse phase D evenly in advance, and then fully mix the multiphases in steps (1) and (2) before adding phase D and mixing evenly; (4) When the temperature drops to below 45°C, add essential oil phase, mix evenly, and then discharge the product.

[0052] Example 2

[0053] The specific implementation method of this embodiment is the same as that of embodiment 1, except that:

[0054] In the essential oil composition, the mass ratio of lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, litsea fruit oil, lemon lemongrass leaf oil, geranium capillaris oil, Rosa damascena flower oil, Lippia citriodora leaf extract, lemon balm leaf extract, and geranium sambac extract is 6.4:0.8:0.7:0.4:0.8:0.3:0.2:0.4:0.2:0.5:0.2:0.4.

[0055] The shampoo formula is the same as in Example 1, except for the change in the content of plant oil in the essential oil phase. The essential oil phase formula is shown in Table 3 below:

[0056] Table 3

[0057]

[0058] Comparative Example 1

[0059] The specific implementation method of this comparative example is the same as that of Example 1, except that:

[0060] The thickening phase contains cocamide MEA, methyl cocoate, cocamide methyl MEA, glycerol, PEG-120 methyl glucoside dioleate, and tocopherol in a mass ratio of 9.5:0.5:9:1:1.9995:0.0005.

[0061] The shampoo formula is the same as in Example 1, except for the change in the content of substances in the thickening phase. The essential oil phase formula is shown in Table 4 below:

[0062] Table 4

[0063]

[0064] Comparative Example 2

[0065] The specific implementation method of this comparative example is the same as that of Example 1, except that:

[0066] The thickening phase contains cocamide MEA, methyl cocoate, cocamide methyl MEA, glycerol, PEG-120 methyl glucoside dioleate, and tocopherol in a mass ratio of 9.5:0.5:4.5:0.5:4.9997:0.0003.

[0067] The shampoo formula is the same as in Example 1, except for the change in the content of substances in the thickening phase. The essential oil phase formula is shown in Table 5 below:

[0068] Table 5

[0069]

[0070] Comparative Example 3

[0071] The specific implementation method of this comparative example is the same as that of Example 1, except that:

[0072] The thickening phase contains cocamide MEA, methyl cocoate, cocamide methyl MEA, glycerol, PEG-120 methyl glucoside dioleate, and tocopherol in a mass ratio of 14.25:0.5:4.5:0.5:1.9995:0.0005.

[0073] The shampoo formula is the same as in Example 1, except for the change in the content of substances in the thickening phase. The essential oil phase formula is shown in Table 6 below:

[0074] Table 6

[0075]

[0076]

[0077] Performance Evaluation

[0078] 1. Fragrance retention test after washing:

[0079] This method is an in vitro test that simulates the daily hair washing habits of the general public to conduct a real hair retention test. First, a scented test sample is prepared and left to stand for 24 hours. Then, a real hair bundle is pre-washed with unscented shampoo until odorless. 2.5g of the sample is accurately weighed and placed in a beaker containing two clean hair bundles. The hair bundles are thoroughly stirred with a glass rod until rich foam is produced. After standing for 10 minutes, one hair bundle is selected and rinsed under a constant-flow warm water tap until the hair bundle is clean and free of foam. The other bundle is used to evaluate the fragrance during the foaming stage.

[0080] The rinsed wet hair was dried using a hairdryer at a temperature that simulates normal hair drying. Based on consumers' shampoo usage habits, the fragrance of the shampoo was evaluated at four stages: after adding fragrance to the sample, after drying, at 24 hours, and at 48 hours (the fragrance duration test can be determined according to project requirements). The scores were recorded in the fragrance evaluation table after the evaluation.

[0081] The above fragrance evaluation was conducted by a panel of 20 experienced fragrance evaluators. They performed blind tests and scored the fragrance intensity of the three shampoos, the change in fragrance intensity across different hair strands, and the lasting power of the scent. The scoring criteria were based on fragrance intensity, ranging from 7 to 1 point from highest to lowest, with very weak fragrances receiving 1 point, in increments of 0.5 points. Higher scores indicate stronger lasting power and a better fragrance.

[0082] A is the shampoo product prepared in Example 1, B is the shampoo product prepared in Example 2, and C is the commercially available shampoo - L'Occitane Fresh Verbena Shampoo (origin: France). The results are recorded in Table 7.

[0083] Table 7

[0084]

[0085] 2. Aroma Evaluation:

[0086] Experimental method: Take 10g of test samples A, B and C respectively and put them into sample bottles of the same diameter. Select 20 members with fragrance evaluation experience to evaluate and score the top, middle and base notes and overall fragrance harmony of the three samples. Each sample was smelled 5 times and the average value was recorded in the fragrance evaluation table 8.

[0087] Table 8

[0088] A 48.4 45.2 93.6 B 47 44.6 91.6 C 45 43.6 88.6

[0089] The results above indicate that, compared with sample C, samples A and B of the present invention have better aroma layering and overall aroma harmony than sample C, and sample A (Example 1) has better performance.

[0090] 3. Hair care efficacy test:

[0091] Hair's combability is an important indicator of the effectiveness of shampoo or hair care products. Hair's combability generally refers to the amount of resistance encountered when a comb passes through the hair.

[0092] This experimental method is an in vitro method using human hair strands. The combing performance of the test samples before and after use was compared. Valid data of the resistance encountered by 20 combs when passing through the hair were measured, and the mean and standard deviation were calculated. Normality tests were performed on the data before and after use. If the data were normally distributed, a paired t-test was performed; if they were not normally distributed, a two-sample t-test was performed, and significance was determined using a two-tailed test. If the combing performance of the sample after use was better than before use, and the significance analysis showed P < 0.05, then the test sample can be considered to have hair-care effects. (Note: P < 0.05 is marked with *; P < 0.01 with **; P < 0.001 with ***)

[0093] We selected sample A (Example 1), which had the best fragrance effect, for the experiment. We measured 20 valid data points and calculated the mean and standard deviation. The greater the reduction in combing effort after using the product, the stronger the smoothing effect of the sample, indicating better hair care effect. The results are recorded in Table 9.

[0094] Table 9

[0095]

[0096] Sample A (Example 1) has obvious hair care effects.

[0097] 4. Viscosity and transparency tests:

[0098] Six 200g bottles were prepared from the test samples of Example 1, Comparative Example 1, Comparative Example 2, and Comparative Example 3. One bottle of each test sample was placed in each bottle and tested under various conditions including -8℃, 5℃, 25℃, 45℃, alternating hot and cold temperatures, and light exposure. The tests were conducted continuously for three months under these six conditions. Samples were removed immediately after preparation, after one month, two months, and three months, allowed to return to room temperature, and then tested, observed, and recorded. The results after three months are shown below: no abnormal jelly-like phenomena and those exhibiting jelly-like phenomena are shown below. Figure 1 and Figure 2 As shown, the results are recorded in Table 10:

[0099] Table 10

[0100]

[0101]

Claims

1. A long-lasting fragrance-enhancing compound essential oil thickening composition, characterized in that: The composition comprises an essential oil phase and a thickening phase; the essential oil phase consists of lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, litsea fruit oil, lemon lemongrass leaf oil, capitulata oil, Rosa damascena flower oil, lemon vine leaf extract, lemon balm leaf extract, and geranium leaf extract, in a mass ratio of 5.6~6.4:0.7~0.8:0.6~0.7:0.3~0.4:0.7~0.8:0.3~0.6:0.2~0.4:0.4:0.2:0.5~1:0.2:0.4; The thickening phase is composed of cocamide MEA, methyl cocoate, cocamide methyl MEA, glycerol, PEG-120 methyl glucoside dioleate and tocopherol in a mass ratio of 9.5:0.5:4.5:0.5:1.9995:0.0005; The mass ratio of the essential oil phase to the thickening phase is 1.11:1.

7.

2. A method for preparing the long-lasting fragrance compound essential oil thickening composition according to claim 1, characterized in that: The steps include the following: (1) Add the lemon peel oil, citron peel oil, bergamot leaf oil, lemon leaf oil, lemon oil, limon oil, lemon citronella leaf oil, geranium capillaris oil, Rosa damascena flower oil, lemon vine leaf extract, lemon basil leaf extract and geranium leaf extract to a mixing container, heat to 50~60℃ and stir to mix evenly to obtain the essential oil phase; (2) The cocoamide MEA, methyl cocoate, cocoamide methyl MEA, glycerol, PEG-120 methyl glucoside and tocopherol are homogenized in another homogenizing container to obtain the thickening phase; (3) Mix the essential oil phase and the thickening phase evenly according to the required ratio to obtain the composition.

3. An application of the long-lasting fragrance compound essential oil thickening composition according to claim 1, characterized in that, This study describes the application of the composite essential oil thickening composition in the preparation of personal care products.

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