A long-lasting fragrance composition, and a preparation method and application thereof

Abstract

The application relates to the field of essence and flavor technology, and discloses a long-lasting fragrance fixing composition, a preparation method and application thereof. The long-lasting fragrance fixing composition comprises a fragrance fixative, a blending agent, a modifier and a solvent, and in particular, at least two of ambergris ketone, vetiver oil and patchouli oil in the fragrance fixative constitute a woody fragrance fixing skeleton; the long-lasting fragrance fixing composition is synergistically acted by a musk blending agent and seven modifiers with specific compositions and matching ratios, so that the long-lasting fragrance fixing composition has a long fragrance retention time, full and coordinated fragrance and rich levels, the fragrance retention time can reach 84-108 hours, and the long-lasting fragrance fixing composition is not stratified after being sealed and placed for 3 months at-5 DEG C and 25 DEG C respectively, thereby effectively solving the technical problems of traditional fragrance fixing products, such as high cost due to many raw materials, short fragrance retention time, obvious fragrance conflict and poor low-temperature storage stability. The preparation method comprises the steps of mixing, segmental aging, cooling and filtering, so that the fragrance is transformed from raw and astringent to mellow, and the prepared long-lasting fragrance fixing composition has pure, stable and long-lasting fragrance.

Description

Technical Field

[0001] This application relates to the field of fragrance and flavor technology, and in particular to a long-lasting fragrance fixative composition, its preparation method, and its application. Background Technology

[0002] In the fragrance and flavor industry, perfumes, shampoos, shower gels, laundry detergents, and other daily chemical products commonly incorporate fragrances to enhance the olfactory experience and pleasure. Fixative compositions are the core functional components of fragrance systems, slowing down the dissipation of volatile fragrance ingredients and extending the duration of the aroma, directly determining the product's fragrance retention and aroma stability. As consumers' demands for the quality of daily chemical products continue to rise, they not only expect pleasant scents during use but also hope that these scents will persist for a long time after use. Developing fixative compositions with long-lasting fragrance, harmonious aroma, and stable quality has become an important direction for technological innovation in the fragrance and flavor industry.

[0003] In traditional fixative formulation techniques, in order to prolong the fragrance duration, a large amount of high-boiling-point fixative raw materials are usually selected for preparation. For example, synthetic musk-like raw materials are used as the fixative framework, supplemented with fragrance components with a longer fragrance duration. The fragrance volatilization is delayed by increasing the overall proportion of high-boiling-point raw materials in the formula. Alternatively, natural plant essential oils are introduced, which enhance the fragrance duration of the formula by relying on their own high boiling point and complex chemical components.

[0004] However, these existing technologies have obvious drawbacks. The simple combination of a large amount of fixative raw materials can easily lead to complicated formula components and large amounts of raw materials, which not only significantly increases production costs, but may also cause conflicts between different fragrances due to the disorderly superposition of multiple fragrance raw materials, making the overall aroma harsh, monotonous, or even producing unpleasant odors, seriously affecting the harmony and quality of the aroma. On the other hand, natural plant essential oils have the disadvantage of easily releasing wax or high melting point components in low-temperature environments, which also leads to problems such as turbidity and sedimentation in the product, seriously affecting the appearance quality and low-temperature storage stability of the product. Summary of the Invention

[0005] To at least overcome one of the problems existing in the prior art, one object of the present invention is to provide a long-lasting fragrance fixative composition, comprising a fixative, a blending agent, a modifier, and a solvent. The fixative is selected from at least two of ambroxanone, vetiver oil, and patchouli oil. The blending agent is selected from at least one of galena, methyl dihydrojasmonate, and hymex. The modifier is composed of cashmereone, polysantalin, asterol, ambroxan, benzoin resin, thuja resin, and santalin oil in a weight ratio of (1~5):(1~4.5):(0.7~4):(0.5~2):(0.4~1.5):(0.5~1.2):(0.3~1). Through the synergistic effect of the specifically matched fixative components, the musky blending agent, and the multi-resin lactone complex modifier, the fixative composition of this application simultaneously possesses excellent fragrance longevity and aroma harmony, and its components are simple, without stratification or precipitation during long-term storage. A second objective of this invention is to provide a method for preparing the long-lasting fragrance fixative composition. A third objective of this invention is to provide the application of the long-lasting fragrance fixative composition in the preparation of daily fragrances, perfumes, shower gels, shampoos, conditioners, and laundry detergents.

[0006] Therefore, the present invention adopts the following technical solution: A first aspect of the present invention provides a long-lasting fragrance fixative composition, the raw material components of which include: a fixative, a blending agent, a modifier, and a solvent; The fixative is selected from at least two of ambroxol, vetiver oil, and patchouli oil; The compounding agent is selected from at least one of the following: galaxy musk, methyl dihydrojasmonate, and hymex musk. The modifier is composed of cashmereone, polysantalin, asterol, ambroxan, benzoin resin, turmeric resin and santalin oil in a weight ratio of (1~5):(1~4.5):(0.7~4):(0.5~2):(0.4~1.5):(0.5~1.2):(0.3~1).

[0007] The fixative composition of the long-lasting fragrance of this application comprises, in which the fixative is selected from at least two of ambroxanone, vetiver oil, and patchouli oil. Ambroxanone has a warm, woody ambroxan base fragrance and provides excellent diffusion and fixative effects; vetiver oil has a rich, dry woody fragrance; and patchouli oil has a rich, long-lasting woody and balsamic fragrance, which helps to form a long-lasting woody fixative framework and slows down the evaporation rate of the fragrance; the blending agent is selected from at least one of gallocha, methyl dihydrojasmonate, and hymex musk, which helps to balance the softness of the fragrance and connect the front and back notes; the modifier is a blend of seven specific fragrances in a specific ratio, among which cashmereone, polysantalinol, ambroxol, and ambroxan modify the fragrance through their respective characteristic fragrances; benzoin resin and thuja resin adsorb and lock in volatile small molecule fragrances, and the boiling point-raising effect of santalin oil delays the evaporation of the fragrance. The synergistic effect of the components enables the fixative composition of this application to achieve excellent long-lasting fragrance and full and harmonious aroma while simplifying the composition, thus solving the technical defects of traditional fixative products such as short fragrance retention time and poor fragrance compatibility.

[0008] Preferably, the fixative is composed of ambroxol, vetiver oil, and patchouli oil. More preferably, the weight ratio of ambroxol, vetiver oil, and patchouli oil in the fixative is (10~22):(0.5~3):(0.7~1.5). Even more preferably, the weight ratio of ambroxol, vetiver oil, and patchouli oil in the fixative is (15~22):(1~3):(0.7~1.5).

[0009] Preferably, the blending agent is composed of galenamus, methyl dihydrojasmonate, and hymexmus. More preferably, the weight ratio of galenamus, methyl dihydrojasmonate, and hymexmus in the blending agent is (30~40):(25~32):(0.5~1.8). Even more preferably, the weight ratio of galenamus, methyl dihydrojasmonate, and hymexmus in the blending agent is (32~40):(25~32):(0.5~1.8).

[0010] In the fixative, a high proportion of ambroxan provides a long-lasting base woody scent, a small amount of vetiver oil adds a delicate and lingering base note, and a trace of patchouli oil primarily modifies the dull woody aroma. The three components, in this balanced proportion, extend the evaporation period of the top, middle, and base notes, avoiding the thinness of the fragrance caused by a single fixative ingredient or the stuffiness caused by an overly strong woody scent. This helps improve the overall fragrance's longevity, evenness, and the mutual solubility stability of the fragrance ingredients. In the blending agent, a high proportion of methyl dihydrojasmonate provides a soft floral base in the middle notes, gallo musk extends the base note's longevity, and a small amount of hyspermum musk weakens the pungent nature of musk. The combination of these three helps neutralize the heavy woody notes of the fixative, achieving a natural transition between floral, musky, and woody scents, enhancing the fragrance's comfort, and further slowing down the overall aroma's dissipation.

[0011] Preferably, in the modifier, the weight ratio of cashmereone, polysantalinol, asterolone, ambroxan, benzoin resin, turmeric resin, and santalin oil is (1.5~5):(1~4):(1~3):(0.8~2):(0.6~1.2):(0.7~1):(0.3~0.8). More preferably, in the modifier, the weight ratio of cashmereone, polysantalinol, asterolone, ambroxan, benzoin resin, turmeric resin, and santalin oil is (2~5):(1.5~4):(1~3):(0.8~2):(0.7~1.2):(0.7~1):(0.3~0.8). More preferably, in the modifier, the weight ratio of cashmereone, polysantalinol, asterolone, ambroxan, benzoin resin, turmeric resin and santalin oil is (3~5):(1.5~4):(1~3):(0.8~2):(0.7~1.2):(0.7~1):(0.5~0.8).

[0012] In the modifier, cashmereone, polysantalin, asterol, and ambergris furan modify the aroma through their respective unique fragrances, making the overall aroma rich, delicate, and layered. Benzoin resin, turmeric resin, and sandalwood oil provide a base note of balsamic-woody aroma. Benzoin resin and turmeric resin are high-molecular-weight compounds that first physically adsorb and lock in volatile small-molecule fragrances before slowly releasing them. Sandalwood oil delays the volatilization of the aroma by raising the boiling point. With a specific ratio of the seven components, the system will not become viscous due to excessive resin, nor will the aroma be thin due to insufficient lactone. This greatly improves the compatibility between the components and is beneficial for long-term storage.

[0013] Preferably, the solvent is selected from at least one of dipropylene glycol, benzyl benzoate, triethyl citrate, and isopropyl myristate. More preferably, the solvent is selected from at least one of dipropylene glycol, benzyl benzoate, and triethyl citrate.

[0014] Preferably, the raw materials of the long-lasting fragrance fixative composition include the following components in parts by weight: 8-25 parts fixative; 40-65 parts of the mixing agent; 5-20 parts of the modifier; Replenish the solvent to 100 parts.

[0015] In the above technical solution, the fixative provides a long-lasting fragrance-locking framework; too little fixative results in insufficient fragrance retention, while too much results in a dull aroma. The blending agent balances the overall fragrance; too little results in a harsh scent, while too much can lead to a cloying feeling. The modifier helps enrich the layers of fragrance and delays its volatilization; insufficient modifier results in weak modification, while excessive modifier can cause components to easily precipitate. All components work synergistically within the proportions specified in this application, achieving excellent fragrance longevity and a full, harmonious fragrance, as well as good storage stability.

[0016] A second aspect of the present invention provides a method for preparing a long-lasting fragrance fixative composition according to the first aspect of the present invention, comprising the following steps: S1. Mix fixative, blending agent, modifier and solvent, stir to obtain premix; S2. The premixed material is aged at 35~45℃ for 6~12 hours, and then cooled to 15~25℃ for a second aging for 20~36 hours. S3. Cool the aged mixture to -5~5℃, maintain for 2~5 hours, and then return to room temperature; S4. Filter, collect the filtrate, and obtain the long-lasting fragrance fixative composition.

[0017] Preferably, in step S2, the temperature of the first aging is 40-45℃ and the time is 7-12 hours; the temperature of the second aging is 20-25℃ and the time is 20-36 hours. More preferably, in step S2, the temperature of the first aging is 40-45℃ and the time is 8-12 hours; the temperature of the second aging is 20-25℃ and the time is 23-36 hours.

[0018] Preferably, in step S2, the primary aging and secondary aging are carried out under nitrogen protection.

[0019] In this preparation method, step S1 involves mixing all raw materials and stirring until homogeneous; step S2 involves aging the premix at 35-45℃ for 6-12 hours, where appropriate heating accelerates molecular motion and promotes the full dissolution and dispersion of viscous raw materials such as benzoin resin and turmeric resin, significantly shortening the time required for traditional aging; then, the temperature is lowered to 15-25℃ for a second aging of 20-36 hours, protecting heat-sensitive components from prolonged high-temperature damage and resulting in a more mellow aroma. Furthermore, aging under nitrogen protection effectively prevents oxidation reactions in the system, maintaining the fresh aroma and light-colored appearance of the natural raw materials; step S3 involves cooling the aged mixture to -5-5℃ for 2-5 hours and then restoring it to room temperature, allowing a small amount of incompletely incompatible resin and low-solubility impurities to precipitate at low temperatures, facilitating filtration in step S4, and improving the stability of the product under low-temperature storage conditions to a certain extent, while also enhancing the purity of the aroma.

[0020] The third aspect of this application provides the application of a long-lasting fragrance fixative composition in the preparation of daily fragrances, perfumes, shower gels, shampoos, conditioners, and laundry detergents, wherein the long-lasting fragrance fixative composition is the long-lasting fragrance fixative composition described above, or is prepared by the above preparation method.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects: The long-lasting fragrance fixative composition of this application utilizes a specific ratio of fixative, blending agent, modifier, and solvent. In particular, at least two of the fixatives, namely ambroxanone, vetiver oil, and patchouli oil, form the woody fixative framework. The synergistic effect of the musk blending agent and the seven modifiers in a specific composition and ratio results in a long-lasting fragrance composition with a full, harmonious, and rich aroma. The fragrance retention time can reach 84-108 hours. It does not separate into layers after being sealed and left to stand for 3 months at -5℃ and 25℃ respectively. This effectively solves the technical problems of traditional fixative products, such as high cost due to multiple raw materials, short fragrance retention time, obvious fragrance conflict, and poor low-temperature storage stability.

[0022] 2) In the fixative of the long-lasting fragrance composition of this application, a high proportion of ambroxan provides a long-lasting base woody fragrance, a small amount of vetiver oil supplements the long-lasting base notes, and a trace amount of patchouli oil neutralizes the heavy and dull feeling of wood. The three elements in balance extend the volatilization period of the top, middle and base notes, which helps to improve the overall fragrance persistence and uniformity and the mutual solubility stability of the fragrance.

[0023] 3) The modifier of the long-lasting fragrance fixative composition of this application is a compound of cashmereone, polysantalinol, asterolone, ambroxan, benzoin resin, turmeric resin, and sandalwood oil in a specific ratio. The four components of cashmereone, polysantalinol, asterolone, and ambroxan form a fragrance modification system, making the overall fragrance rich, delicate and layered. Benzoin resin and turmeric resin adsorb and lock in volatile small molecule fragrances through their high molecular structure and release them slowly. Sandalwood oil delays the volatilization of fragrance by raising the boiling point of the system. The seven components work synergistically in a specific ratio, which greatly improves the compatibility between the components and the fragrance persistence.

[0024] 4) The preparation method of the fixative composition of this application involves the steps of mixing, segmented aging, cooling and filtering. The aging process is divided into primary aging and secondary aging. The primary aging is carried out at 35~45℃ for 6~12h to promote the full dissolution and dispersion of viscous raw materials. Then, the temperature is lowered to 15~25℃ for secondary aging for 20~36h to protect the heat-sensitive components from high temperature damage and to transform the aroma from raw to mellow. The resulting fixative composition has a pure, stable and long-lasting aroma. Detailed Implementation

[0025] The present invention will be further described in detail below through specific embodiments, comparative examples and tables, but is not limited to all the discussions and data.

[0026] In the raw material components of the long-lasting fragrance fixative composition, ambroxanone is from Shanghai Wanli Fragrance Trading Co., Ltd.; vetiver oil and patchouli oil are from Shanghai Tanabe Industrial Co., Ltd.; gallocha musk and methyl dihydrojasmonate are from Nanjing Jiulonghui Fragrance Co., Ltd.; hyaluronic acid musk, ambroxan furan, benzoin resin and sandalwood oil are from Chongqing Zhengyuan Trading Co., Ltd.; cashmereone, polysantalin, asterol, toluene resin and triethyl citrate are from Guangzhou Liying Trading Co., Ltd.

[0027] It is particularly important to emphasize that, unless otherwise specified, the raw materials, reagents, or devices used in this invention can all be obtained through conventional commercial channels. Unless otherwise specified, "parts" in this invention refers to parts by weight.

[0028] Examples of long-lasting fixative compositions: A long-lasting fragrance fixative composition is prepared by the following steps: S1. Mix 8-25 parts of fixative, 40-65 parts of blending agent, and 5-20 parts of modifier, and add solvent to make up to 100 parts. Stir to obtain a premix. S2. Under nitrogen protection, the premix is ​​aged at 35~45℃ for 6~12h, and then cooled to 15~25℃ for a second aging for 20~36h. S3. Cool the aged mixture to -5~5℃, maintain for 2~5 hours, and then return to room temperature; S4. Filter, collect the filtrate, and obtain the long-lasting fragrance fixative composition.

[0029] Regarding step S1, in some specific embodiments, the fixative can be selected from at least two of ambroxol, vetiver oil, and patchouli oil; the weight ratio of ambroxol, vetiver oil, and patchouli oil in the fixative can be 10:0.5:0.7, 15:1:0.7, 20:3:1.5, 22:2:1, or 18:1:1.5. The blending agent can be selected from at least one of galomus, methyl dihydrojasmonate, and hymex musk; the weight ratio of galomus, methyl dihydrojasmonate, and hymex musk in the blending agent can be 30:25:1, 35:25:0.5, 40:30:1.8, or 35:32:1. The modifier is composed of cashmereone, polysantalin, anemone lactone, ambroxan, benzoin resin, thuja resin, and santalin oil in weight ratios of 1:1:2:1:0.4:0.5:0.3, 1.5:1:0.7:1:0.6:1.2:0.5, 4:2:4:2:1.2:1:0.7, 5:2:3:2:1.5:1:0.5, or 2:4.5:1:0.5:0.7:1:1. The solvent may be selected from at least one of dipropylene glycol, benzyl benzoate, triethyl citrate, and isopropyl myristate. The amount of fixative can be 8, 10, 15, 20 or 25 parts, the amount of blending agent can be 40, 45, 50, 55 or 65 parts, and the amount of modifier can be 5, 10, 15 or 20 parts, and then made up to 100 parts with solvent.

[0030] Regarding step S2, in some specific implementation schemes, the temperature for the first aging can be 35℃, 40℃, or 45℃, and the aging time for the first aging can be 6h, 9h, 11h, or 12h; the temperature for the second aging can be 15℃, 20℃, or 25℃, and the aging time for the second aging can be 20h, 25h, 30h, or 36h.

[0031] For step S3, in some specific implementations, the mixture is cooled to -5°C, -3°C, 0°C or 5°C and maintained for 2h, 3h, 4h or 5h. Example 1

[0032] A long-lasting fragrance fixative composition is prepared by the following steps: S1. Add 16.7 parts of fixative (including 15 parts of ambroxol, 1 part of vetiver oil, and 0.7 parts of patchouli oil), 56 parts of blending agent (including 30 parts of galena, 25 parts of methyl dihydrojasmonate, and 1 part of hymex musk), 6.5 parts of modifier (including 1.5 parts of cashmereone, 1 part of polysantalinol, 0.7 parts of asterolone, 1 part of ambroxan, 0.6 parts of benzoin resin, 1.2 parts of turushi resin, and 0.5 parts of santalinus oil), and triethyl citrate to a sealed mixing vessel to a final volume of 100 parts. Start stirring, set the stirring speed to 260 r / min, and continue stirring for 30 min. Then turn off the stirring to obtain the premix. S2. Introduce nitrogen and control the pressure inside the reactor to 0.3 kPa. Perform a first aging at 40°C for 8 hours, then cool down to 20°C for a second aging for 30 hours. S3. Transfer the aged mixture to a stainless steel sealed container, place it in a constant temperature cold bath cooled to -2℃ and keep it warm for 3 hours. After taking it out, let it naturally return to 20℃. S4. Filter with qualitative filter paper, collect the filtrate, and obtain the long-lasting fragrance fixative composition. Example 2

[0033] The preparation method of a long-lasting fragrance fixative composition is the same as in Example 1, except that the fixative in Example 2 is 24.5 parts, which consists of 20 parts ambroxol, 3 parts vetiver oil and 1.5 parts patchouli oil. Example 3

[0034] The preparation method of a long-lasting fragrance fixative composition is the same as in Example 1, except that in Example 3, the modifier is 14.9 parts, which consists of 4 parts cashmione, 2 parts polysantalinol, 4 parts asterolone, 2 parts ambergris furan, 1.2 parts benzoin resin, 1 part turol resin and 0.7 parts santalin oil. Example 4

[0035] The preparation method of a long-lasting fragrance fixative composition is the same as in Example 1, except that in step S2 of Example 4, the aging temperature is 35°C.

[0036] Comparative Example 1: The preparation method of a long-lasting fragrance fixative composition is the same as in Example 1, except that the fixative in Comparative Example 1 is replaced with an equal amount of triethyl citrate.

[0037] Comparative Example 2: The preparation method of a long-lasting fragrance fixative composition is the same as in Example 1, except that the fixative in Comparative Example 2 is 19.7 parts, which consists of 15 parts ambroxol, 4 parts vetiver oil and 0.7 parts patchouli oil.

[0038] Comparative Example 3: The preparation method of a long-lasting fragrance fixative composition is the same as in Example 1, except that in Comparative Example 3, the benzoin resin in the modifier is replaced with an equal amount of turula resin.

[0039] Comparative Example 4: The preparation method of a long-lasting fragrance fixative composition is the same as in Example 1, except that the modifier in Comparative Example 4 is 11 parts, which consists of 6 parts cashmiphene, 1 part polysantalinol, 0.7 parts asterolone, 1 part ambergris furan, 0.6 parts benzoin resin, 1.2 parts turushi resin and 0.5 parts santalin oil.

[0040] Comparative Example 5: The preparation method of a long-lasting fragrance fixative composition is the same as that in Example 1, except that in step S2 of Comparative Example 5, the aging is carried out once at 35°C for 48 hours, without secondary aging.

[0041] Comparative Example 6: The preparation method of a long-lasting fragrance fixative composition is the same as in Example 1, except that step S3 is omitted in Comparative Example 6.

[0042] Material performance testing: The long-lasting fragrance fixative compositions obtained in Examples 1-4 and Comparative Examples 1-6 were subjected to various performance tests, and the test methods are as follows: 1. Scent Residue End Time: Take a 1cm × 15cm standard scent paper strip, immerse one end of the strip in the sample to a depth of 2cm, leave it for 3 seconds, then remove it and hang it vertically in a windless fume hood. Record the hanging time as 0h. Prepare 5 strips in parallel for each sample group. Five professional fragrance tasters each hold one strip and smell the end of the strip every 6 hours, evaluating the aroma intensity on a 5-point scale: 5 points for rich and full aroma; 4 points for obvious aroma; 3 points for medium aroma; 2 points for detectable but weak aroma; 1 point for faintly detectable aroma; 0 points for completely no aroma. Record the time from the start of the fragrance intensity decay to 1 point for each sample group, and take the average of the times recorded by the five fragrance tasters as the scent residue end time of that sample.

[0043] 2. Aroma Harmony: At the 24-hour mark of the fragrance longevity test, 5 professional fragrance evaluators evaluated the sample from three dimensions: harmony, richness, and comfort. Each dimension was scored independently with a maximum score of 10. The average of the scores from the 5 evaluators for each dimension was then taken to obtain the average score of the sample in each of the three dimensions: harmony, richness, and comfort. The average scores of these three dimensions were then added together and divided by 3 to obtain the final aroma harmony score of the sample (maximum score of 10).

[0044] 3. Storage stability: Take two 20mL samples from each sample, put them into transparent glass screw-top bottles and seal them. Place them in environments of -5℃ and 25℃ respectively. After standing for 3 months, take them out and restore them to 25℃. Observe them visually under natural light. If the sample remains clear and transparent, without any visible turbidity, precipitation, layering or exudation, it is "qualified". If any of the above abnormal phenomena occur, it is "unqualified". Describe the abnormal state in detail.

[0045] The test properties of the long-lasting fragrance fixative compositions of Examples 1-4 and Comparative Examples 1-6 are shown in Table 1 below:

[0046] The long-lasting fragrance fixative compositions of Examples 1-4 achieve a long-lasting fragrance through the rational proportions of fixatives, blending agents, modifiers, and solvents, especially the synergistic effect of specific components and proportions of fixatives, blending agents, and seven specific modifiers. Combined with the preparation methods of segmented aging and low-temperature freeze-filtration, the prepared long-lasting fragrance fixative compositions have a long-lasting fragrance duration of 84-108 hours, excellent aroma harmony, and high storage stability. They remain clear and transparent without precipitation even after being sealed and left to stand for 3 months at -5℃ and 25℃. This effectively solves the technical problems of short fragrance duration, obvious aroma conflict, and poor low-temperature storage stability of traditional fixative products.

[0047] Compared with Example 1, Comparative Example 1 was prepared in the same way, except that the fixative in Comparative Example 1 was replaced with triethyl citrate in equal amounts. The results showed that the lasting fragrance duration of the fixative composition in Comparative Example 1 was reduced to 48 hours, and the aroma harmony score was only 7.3 points. This may be because triethyl citrate itself is a low-boiling-point solvent and does not have a fixative function. The combination agent and modifier alone cannot maintain a long-lasting fragrance, resulting in a thin overall aroma and rapid diffusion of the fixative composition.

[0048] Compared with Example 1, Comparative Example 2 was prepared in the same way, except that the fixative in Comparative Example 2 was 19.7 parts, which consisted of 15 parts ambroxol, 4 parts vetiver oil, and 0.7 parts patchouli oil. The results showed that the lasting time of the fixative composition in Comparative Example 2 was reduced to 60 hours, and the aroma harmony score was only 6.8 points. This may be because the proportion of vetiver oil in Comparative Example 2 was too high, and its rich dry woody aroma accounted for too much of the system, resulting in an overly strong woody smell, a lack of smooth transition, uneven overall release rate, and unsatisfactory aroma harmony.

[0049] Compared with Example 1, Comparative Example 3 was prepared in the same way, except that the benzoin resin in the modifier was replaced with an equal amount of turula resin. The results showed that the retention time of the fixative composition in Comparative Example 3 was reduced to 72 hours, the aroma harmony score was reduced to 7.5 points, and bottom precipitates appeared in the stability test at -5℃ / 3 months. This may be because although benzoin resin and turula resin are both natural resin raw materials, their molecular weight distribution, softening point and solubility in solvent systems are different. Only under specific ratios can a stable co-solubilized system and synergistic effect be formed. After all the benzoin resin was replaced with turula resin, the synergistic and complementary effect of the two was lost, the fixative effect was weakened, and the solubility of the total amount of resin at low temperature was insufficient, resulting in the precipitation of some components.

[0050] Compared with Example 1, Comparative Example 4 was prepared in the same way, except that the modifier in Comparative Example 4 was 11 parts, consisting of 6 parts cashmione, 1 part polysantalinol, 0.7 parts asterolone, 1 part ambergris furan, 0.6 parts benzoin resin, 1.2 parts turol resin and 0.5 parts santalin oil. The results showed that the retention time of the fixative composition in Comparative Example 4 was reduced to 72 hours and the aroma harmony score was reduced to 7.9 points. This may be because the cashmione in Comparative Example 4 was excessive, and its unique camphor-woody notes were too prominent, causing an imbalance in aroma. At the same time, the excessive cashmione itself has a certain degree of volatility, and the additional volatile components led to a harsh and irritating aroma, which affected its modification effect to a certain extent.

[0051] Compared with Example 1, Comparative Example 5 was prepared in the same way, except that in step S2, the aging process was changed to a single aging at 35°C for 48 hours without secondary aging. The results showed that the retention time of the fixative composition in Comparative Example 5 was reduced to 60 hours, and the aroma harmony score was only 6.4 points. This may be because the long-term high-temperature aging caused the heat-sensitive terpenes in the naturally derived vetiver oil and patchouli oil in the formula to oxidize or decompose, which damaged the aroma quality and volatility characteristics. At the same time, the lack of a low-temperature aging process for secondary aging prevented the intermolecular forces between the components from being fully established, resulting in a monotonous aroma and poor aroma harmony.

[0052] Compared with Example 1, Comparative Example 6 was prepared in the same way, except that step S3 was omitted in Comparative Example 6. The results showed that the fragrance retention time of the fixative composition of Comparative Example 6 was 78 hours and the aroma harmony score was 8.1. However, slight turbidity appeared in the stability test at -5℃ for 3 months. This may be because after omitting step S3, trace amounts of insoluble matter that could have been precipitated at low temperature and removed by filtration remained in the final product. These residues interfered with the uniform release of aroma molecules to a certain extent and slowly accumulated under long-term storage conditions at -5℃, resulting in slight turbidity in the system.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. Any obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A long-lasting fragrance fixative composition, characterized in that, Its raw material components include: fixatives, blending agents, modifiers, and solvents; The fixative is selected from at least two of ambroxol, vetiver oil, and patchouli oil; The compounding agent is selected from at least one of the following: galaxy musk, methyl dihydrojasmonate, and hymex musk. The modifier is composed of cashmereone, polysantalin, asterol, ambroxan, benzoin resin, turmeric resin and santalin oil in a weight ratio of (1~5):(1~4.5):(0.7~4):(0.5~2):(0.4~1.5):(0.5~1.2):(0.3~1).

2. The long-lasting fragrance fixative composition according to claim 1, characterized in that, The fixative is composed of ambroxanone, vetiver oil and patchouli oil, and the blending agent is composed of galaxy musk, methyl dihydrojasmonate and hymex musk.

3. The long-lasting fragrance fixative composition according to claim 2, characterized in that, In the fixative, the weight ratio of ambroxanone, vetiver oil, and patchouli oil is (10~22):(0.5~3):(0.7~1.5).

4. The long-lasting fragrance fixative composition according to claim 2, characterized in that, In the compounding agent, the weight ratio of galaxy musk, methyl dihydrojasmonate and hymex musk is (30~40):(25~32):(0.5~1.8).

5. The long-lasting fragrance fixative composition according to claim 1, characterized in that, In the modifier, the weight ratio of cashmereone, polysantalinol, asterolone, ambroxan, benzoin resin, turmeric resin and santalin oil is (1.5~5):(1~4):(1~3):(0.8~2):(0.6~1.2):(0.7~1):(0.3~0.8).

6. The long-lasting fragrance fixative composition according to claim 1, characterized in that, The solvent is selected from at least one of dipropylene glycol, benzyl benzoate, triethyl citrate, and isopropyl myristate.

7. The long-lasting fragrance fixative composition according to claim 1, characterized in that, Its raw materials include the following components in parts by weight: 8-25 parts fixative; 40-65 parts of the mixing agent; 5-20 parts of the modifier; Replenish the solvent to 100 parts.

8. A method for preparing a long-lasting fragrance fixative composition as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S1. Mix fixative, blending agent, modifier and solvent, stir to obtain premix; S2. The premixed material is aged at 35~45℃ for 6~12 hours, and then cooled to 15~25℃ for a second aging for 20~36 hours. S3. Cool the aged mixture to -5~5℃, maintain for 2~5 hours, and then return to room temperature; S4. Filter, collect the filtrate, and obtain the long-lasting fragrance fixative composition.

9. The method for preparing the long-lasting fragrance fixative composition according to claim 8, characterized in that, In step S2, the primary and secondary aging processes are carried out under nitrogen protection.

10. The use of the long-lasting fragrance fixative composition according to any one of claims 1 to 7 or the long-lasting fragrance fixative composition prepared by the preparation method according to any one of claims 8 to 9 in the preparation of daily fragrances, perfumes, shower gels, shampoos, conditioners, and laundry detergents.

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