Quickly-soluble incense bead granules

Abstract

The application discloses quick-dissolving fragrance-retaining pearl particles and relates to the technical field of daily chemical products. The density of the fragrance-retaining pearl particles is less than or equal to 0.98 g / cm 3 , the particle size is 2.0-9.0 mm, and the dissolving time is 2-10 min. The fragrance-retaining pearl particles comprise an encapsulating material, a thickening agent and a fragrance. The encapsulating material is polyethylene glycol with a weight average molecular weight of 200-7000, and the thickening agent can increase the viscosity of the encapsulating material when the encapsulating material is melted. By using polyethylene glycol with a weight average molecular weight of 200-7000 as the encapsulating material, the fragrance-retaining pearl particles have a relatively fast dissolving speed in water, and the technical problem that the fragrance-retaining pearl particles cannot be completely dissolved and cannot play a fragrance-retaining role due to short washing time during quick washing is solved. By adding the thickening agent, the viscosity of the polyethylene glycol when the polyethylene glycol is melted can be adjusted, and then gas can stay in the molten material body to form micro-bubbles. After extrusion molding, the fragrance-retaining pearl particles with a relatively small density can be obtained, so that the fragrance-retaining pearl particles can float on the water surface during use, are not washed away by water and have a better fragrance-retaining effect.

Description

Technical Field

[0001] This invention relates to the field of daily chemical product technology, and in particular to a fast-dissolving fragrance-retaining bead granule. Background Technology

[0002] Fragrance beads enhance the scent of clothes and are typically added to the washing machine. During the wash cycle, they slowly dissolve, releasing fragrance molecules that adhere to the clothes, adding aroma. Simultaneously, the released fragrance molecules keep the washing machine smelling pleasant, preventing unpleasant odors. However, the current fragrance release process of fragrance beads is adapted to the standard washing machine cycle. That is, the fragrance beads gradually dissolve and release fragrance molecules during a 40-60 minute wash cycle (the standard washing machine cycle time is usually 40-60 minutes). Therefore, when washing fewer clothes, such as in summer and autumn, using a quick wash cycle (usually around 15 minutes) is not suitable. This is because the quick wash cycle time is too short (excluding water filling and draining time, the actual washing time is about 8 minutes), and the existing fragrance beads cannot completely dissolve. This results in poor fragrance enhancement, and undissolved fragrance beads will adhere to the clothes, significantly reducing the user experience. To accelerate the dissolution of fragrance beads, existing technologies reduce the molecular weight of the carrier to facilitate rapid dissolution. However, reducing the carrier's molecular weight lowers its viscosity during melting. This decrease in viscosity allows microbubbles to easily escape from the carrier, reducing the microbubble volume ratio and consequently increasing the bead density. Consequently, the beads cannot float on water and are easily washed away, failing to provide a lasting fragrance effect. Furthermore, reducing the carrier's molecular weight lowers the melting point of the fragrance beads, causing them to clump together at lower temperatures, affecting their usability. Therefore, existing technologies require further improvement and refinement. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a fast-dissolving fragrance bead, which aims to solve the defects of the existing fragrance beads used in the quick wash mode, which have a large density, are easy to sink to the bottom of the water and be washed away, and cannot play a fragrance retention role.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A type of fast-dissolving fragrance beads, wherein the density of the fragrance beads is ≤0.98 g / cm³. 3 The particle size is 2.0-9.0 mm, and the dissolution time is 2-10 min. The fragrance beads include encapsulation material, thickener and fragrance. The encapsulation material is polyethylene glycol with a weight average molecular weight of 200-7000. The thickener can increase the viscosity of the encapsulation material when it melts.

[0006] In the aforementioned fast-dissolving fragrance beads, the weight-average molecular weight of the thickener is 9000-15000.

[0007] The thickener in the fast-dissolving fragrance beads comprises one or more of the following: glucose ethylene oxide polymer, methyl glucose ethylene oxide polymer, sucrose ethylene oxide polymer, sorbitol ethylene oxide polymer, glycerol ethylene oxide polymer, and pentaerythritol ethylene oxide polymer; or one or more of the following: glucose ethylene oxide propylene oxide copolymer, methyl glucose ethylene oxide propylene oxide copolymer, sucrose ethylene oxide propylene oxide copolymer, sorbitol ethylene oxide propylene oxide copolymer, glycerol ethylene oxide propylene oxide copolymer, and pentaerythritol ethylene oxide propylene oxide copolymer.

[0008] The fast-dissolving fragrance beads also contain microbubbles, the volume percentage of which is 10-75%.

[0009] The raw materials for preparing the fast-dissolving fragrance beads, by weight, include: 20-90 parts of encapsulating material, 2-10 parts of thickener, 0.1-10 parts of forming agent, 0.01-50 parts of fragrance, and 1-10 parts of gas trapping agent.

[0010] In the aforementioned fast-dissolving fragrance beads, the fragrance includes flavoring and fragrance bead microcapsules, the outer wall of which carries a positive charge.

[0011] In the aforementioned fast-dissolving fragrance beads, the gas trapping agent includes one or more of the following: silica, kaolin, bentonite, clay, natural zeolite, molecular sieve, amorphous metal oxide, nano-alumina, nano-magnetic iron oxide, modified coke powder, modified fly ash, modified coffee grounds, modified cellulose, and modified starch.

[0012] In the fast-dissolving fragrance beads, the particle size of the gas trapping agent is 10-1000 nm.

[0013] The fast-dissolving fragrance beads, by weight, include 0.1 to 10 parts of additive A and 0.1 to 10 parts of additive B; additive A can generate gas when heated or reacting with additive B.

[0014] In the fast-dissolving fragrance beads, the molding agent includes one or more of the following: polyethylene glycol stearate, plant-based modified ester-based quaternary ammonium salt, plant-based modified imidazoline quaternary ammonium salt, plant-based modified amide salt, cationic modified starch, cationic modified cellulose, and hemicellulose.

[0015] Beneficial effects:

[0016] This invention provides fast-dissolving fragrance beads. By using polyethylene glycol with a weight-average molecular weight of 200-7000 as the encapsulation material, the fragrance beads can dissolve quickly in water. Through rapid dissolution, the encapsulated fragrance and fragrance capsules are released, solving the technical problem that the fragrance beads cannot completely dissolve and thus fail to retain fragrance during quick washes due to the short washing time. By adding a thickener, the viscosity of polyethylene glycol during melting can be adjusted, allowing gas to remain in the molten material without overflowing, forming microbubbles. After extrusion molding, fragrance beads with low density can be obtained, so that they float on the water surface during use, are not washed away, and have a better fragrance retention effect. Detailed Implementation

[0017] This invention provides fast-dissolving fragrance beads. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the following embodiments are provided to further illustrate the invention in detail. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0018] A preferred embodiment of the present invention provides a fast-dissolving fragrance bead granule with a density ≤0.98g / cm³. 3 These fragrance beads float on water and therefore won't be washed away during washing. They gradually dissolve during the wash cycle, releasing fragrance compounds and providing a lasting scent. The beads have a particle size of 2.0–9.0 mm and dissolve in water in 2–10 minutes, exhibiting a rapid dissolution rate suitable for quick wash cycles. They completely dissolve during the quick wash, adhering the fragrance or fragrance capsules to the clothing for a lasting scent. To ensure rapid dissolution, the encapsulating material is polyethylene glycol with a weight-average molecular weight of 200–7000. Due to its small molecular weight, it dissolves quickly in water. With appropriately sized beads, it can dissolve completely within 9 minutes, releasing the encapsulated fragrance and fragrance capsules. This solves the technical problem of insufficient dissolution and ineffective scent retention during quick wash cycles. The fragrance beads also contain fragrance and a thickener. The fragrance includes flavorings and flavoring microcapsules, which release aromatic factors and have a fragrance-retaining effect. The thickener is used to adjust the viscosity of polyethylene glycol when it melts. A high molecular weight polymer with a large three-dimensional structure is used so that the low molecular weight polyethylene glycol has a large viscosity when melted, which allows microbubbles to remain in the molten material. After extrusion molding, fragrance beads with a low density are obtained so that they can float on the water surface when used.

[0019] The thickener must both increase the viscosity of the fragrance beads material when melted and have good water solubility so that it can dissolve quickly during use. In a preferred embodiment, the thickener is selected from one or more of the following: glucose ethylene oxide polymer, methyl glucose ethylene oxide polymer, sucrose ethylene oxide polymer, sorbitol ethylene oxide polymer, glycerol ethylene oxide polymer, and pentaerythritol ethylene oxide polymer; or selected from one or more of the following: glucose ethylene oxide propylene oxide copolymer, methyl glucose ethylene oxide propylene oxide copolymer, sucrose ethylene oxide propylene oxide copolymer, sorbitol ethylene oxide propylene oxide copolymer, glycerol ethylene oxide propylene oxide copolymer, and pentaerythritol ethylene oxide propylene oxide copolymer. The aforementioned thickener has a large three-dimensional structure, which can significantly increase the viscosity of polyethylene glycol (PEG) when added in small amounts. It also exhibits good compatibility with PEG, allowing for uniform dispersion within the PEG. Importantly, it has good water solubility, dissolving rapidly in water and significantly shortening the dissolution time of the fragrance beads. Furthermore, the thickener can adjust the melting temperature of the fragrance beads, raising their melting point and preventing them from melting and sticking together at high temperatures, which would make them inconvenient to use.

[0020] Specifically, the glucose ethylene oxide polymer, methyl glucose ethylene oxide polymer, sucrose ethylene oxide polymer, sorbitol ethylene oxide polymer, glycerol ethylene oxide polymer, and pentaerythritol ethylene oxide polymer are polymers A obtained by polymerizing glucose, methyl glucose, sucrose, sorbitol, glycerol, pentaerythritol, and ethylene oxide at 100–135°C under the action of a catalyst. The general molecular formula of polymer A is A(CH2CH2O). m H, where A represents glucose, methyl glucose, sucrose, sorbitol, glycerol, and pentaerythritol, and the value of m can be 200 to 340. Therefore, its weight-average molecular weight is 9,000 to 15,000, and it has a large three-dimensional structure, which can greatly increase the viscosity of polyethylene glycol and increase the melting point of fragrance beads. At the same time, after being capped with glucose, methyl glucose, sucrose, sorbitol, glycerol, and pentaerythritol, the aforementioned polymer A has good water solubility and can be quickly dissolved in water.

[0021] Specifically, the glucose ethylene oxide propylene oxide copolymer, methyl glucose ethylene oxide propylene oxide copolymer, sucrose ethylene oxide propylene oxide copolymer, sorbitol ethylene oxide propylene oxide copolymer, glycerol ethylene oxide propylene oxide copolymer, and pentaerythritol ethylene oxide propylene oxide copolymer are products of the polymerization reaction of glucose, methyl glucose, sucrose, sorbitol, glycerol, and pentaerythritol with ethylene oxide and propylene oxide under the action of a catalyst. The polymerization reaction temperature is 100-135℃, and the catalysts used are potassium hydroxide, sodium hydroxide, sodium methoxide, etc. Through the polymerization reaction, polymer B is formed with ethylene oxide and propylene oxide as the main chains and glucose, methyl glucose, sucrose, sorbitol, glycerol, and pentaerythritol as end-caps. The general molecular formula of polymer B is A(CH2CH2O). n (CH(CH3)CH2O) k H, where A represents glucose, methyl glucose, sucrose, sorbitol, glycerol, pentaerythritol, n equals 130-290, k equals 20-90, and its molecular weight is 9000-15000. It also has the effect of increasing the viscosity of polyethylene glycol, increasing the melting point of fragrance beads and the water solubility rate.

[0022] To improve the fragrance retention effect, the fragrance or fragrance microcapsules need to adhere more to the surface of the clothing. Since the surface of the fabric is usually negatively charged, in a preferred embodiment, the outer wall of the fragrance bead microcapsule is positively charged, which allows it to adhere better to the fabric surface and improve the fragrance retention effect.

[0023] To enable the fragrance beads to float on water, the beads also contain microbubbles. These microbubbles are formed within the beads through physical or chemical methods, thereby reducing their density to less than that of water, thus facilitating buoyancy. Generally, the higher the volume percentage of microbubbles in the fragrance beads, the lower the density, resulting in a higher buoyancy and better fragrance retention. However, a higher volume percentage also reduces the hardness of the fragrance beads, making them more prone to breakage during transportation or bottling. Therefore, the volume percentage of microbubbles needs to be controlled within a suitable range. In a preferred embodiment, the volume percentage of microbubbles is 10%–75%. When the volume percentage of microbubbles in the fragrance beads falls within this range, the beads achieve a low density while maintaining good hardness, meeting the requirements for bottling and transportation.

[0024] Furthermore, the effective diameter of the microbubbles in the fragrance beads affects their hardness and buoyancy. Generally, when the volume ratio of microbubbles is fixed, the smaller the effective diameter of the microbubbles, the less likely they are to break, resulting in better hardness of the fragrance beads. Simultaneously, a smaller effective diameter also leads to more uniform dispersion of the microbubbles within the beads, resulting in a higher buoyancy of the fragrance beads and a better fragrance retention effect. In a preferred embodiment, the effective diameter of the microbubbles is 0.1–1000 μm, which allows for more uniform dispersion of the microbubbles, higher hardness of the fragrance beads, and a higher buoyancy in water, resulting in a better fragrance retention effect.

[0025] To improve the uniformity of microbubbles dispersion in the fragrance beads, the fragrance bead particles also contain a gas trapping agent. This gas trapping agent is a porous powder material with a large specific surface area and is difficult to melt. When it is dispersed in molten material, it can exist as a gas nucleus, preventing gas from escaping and playing the role of trapping gas and forming microbubbles.

[0026] In a preferred embodiment, the gas trapping agent comprises one or more of the following: silica, kaolin, bentonite, clay, natural zeolite, molecular sieve, amorphous metal oxide, nano-alumina, nano-magnetic iron oxide, modified coke powder, modified fly ash, modified coffee grounds, modified cellulose, and modified starch. All of the aforementioned gas trapping agents possess a porous structure and a large specific surface area, thus exhibiting good gas trapping performance. Furthermore, they have high melting points and can disperse as independent phases within molten materials, acting as gas nuclei to trap gases. The modified coke powder, modified fly ash, modified coffee grounds, modified cellulose, and modified starch are prepared using chemical or biological methods to create loose, porous powdery materials with a large specific surface area, enabling them to perform gas trapping.

[0027] The particle size of the gas trap directly affects the formation of microbubbles and their uniform dispersion within the beads. Generally, with a fixed amount of gas trap added, the finer the particle size, the better its dispersion in the material, resulting in more uniform and smaller microbubbles with a higher buoyancy rate and better hardness of the fragrance beads. However, if the particle size of the gas trap is too small, it is prone to agglomeration, leading to decreased dispersibility. Therefore, in a preferred embodiment, the particle size of the gas trap can be 10–1000 nm, 10–100 nm, 10–50 nm, a combination of the above particle size ranges, or any value within the above ranges, exhibiting good dispersibility and ensuring good uniform dispersion of microbubbles in the fragrance beads.

[0028] Furthermore, the specific surface area of ​​the gas trap affects its gas trapping ability; with the same particle size, a larger specific surface area results in better gas trapping ability. Specifically, the specific surface area of ​​the gas trap can be 1–1000 m². 2 / g, or 1-500m 2 / g, or 100-300m 2 / g, or a combination thereof, or any specific surface area within the aforementioned range. Gas traps with the aforementioned particle size range and specific surface area exhibit good dispersibility in the mixture, effectively trapping gases, forming microbubbles within the beads, and distributing them uniformly.

[0029] In a preferred embodiment, in order to better shape the extruded material during preparation, the raw materials for preparing the fragrance beads also include a molding agent. The molding agent includes one or more combinations of polyethylene glycol stearate, plant-based modified ester-based quaternary ammonium salt, plant-based modified imidazoline quaternary ammonium salt, plant-based modified amide salt, cationic modified starch, cationic modified cellulose, and hemicellulose. By adding any of the aforementioned molding agents, the extruded material can be quickly shaped. Furthermore, the aforementioned molding agents can also change the flowability of the material, giving it good flowability under pressure and preventing collapse when the external force is removed, thus achieving a better molding effect.

[0030] In a preferred embodiment, the raw materials for preparing the fragrance bead granules, by weight, include: 20-90 parts encapsulating material, 2-10 parts thickener, 0.1-10 parts molding agent, 0.01-50 parts fragrance, and 1-10 parts gas trapping agent. The encapsulating material is polyethylene glycol with a molecular weight of 200-7000, which has a fast dissolution rate in aqueous solution. The thickener increases the viscosity of the melted polyethylene glycol. The molding agent improves the flowability and molding effect of the material. The gas trapping agent traps gas to form microbubbles. It should be noted that pigments, antibacterial agents, and other components may also be added to the aforementioned raw materials for preparing the fragrance bead granules to achieve better appearance or corresponding functions. Specific additions can be made according to actual needs and will not be described in detail here.

[0031] The aforementioned raw materials are melted, mixed, gas-introduced, and extruded into granules to obtain fragrance beads. The specific preparation steps are as follows:

[0032] Step A1. Take the encapsulating material, thickener, molding agent, gas trapping agent, and fragrance according to the specified ratio;

[0033] Step A2. First, add the encapsulating material to the reactor and heat it to a molten state; while stirring, add the molding agent, gas trapping agent, and fragrance, stir evenly, then add the thickener and stir to mix evenly to obtain the mixture;

[0034] Step A3. Introduce gas into the mixture and stir until it is evenly dispersed in the mixture;

[0035] Step A4. Adjust the temperature of the mixture to 50-75℃, granulate, and after cooling, obtain fragrance beads.

[0036] In this embodiment, microbubbles are obtained by melting and mixing the raw materials and then introducing gas. The added gas trapping agent ensures the microbubbles are uniformly dispersed in the mixture, while the added thickener increases the viscosity of the mixture, preventing gas leakage and thus resulting in more microbubbles. The fragrance beads prepared by this method have a low density, float on water, and exhibit a fast dissolution rate.

[0037] The aforementioned fragrance beads obtain microbubbles by introducing gas into the bead particles. This method requires sophisticated equipment; otherwise, uneven bubble distribution or insufficient gas dispersion can lead to gas overflow, preventing the production of fragrance beads with a large microbubble volume ratio. In another embodiment, microbubbles are obtained through a chemical reaction. For example, raw materials that can generate gas through thermal decomposition or acid-salt reactions are added to the raw materials used to prepare the fragrance bead particles. Specifically, by weight, the raw materials for preparing the fragrance beads include: 20-90 parts encapsulating material, 2-10 parts thickener, 0.1-10 parts molding agent, 0.01-50 parts fragrance, 1-10 parts gas trapping agent, 0.1-10 parts additive A, and 0.1-10 parts additive B. The auxiliary agent A can be one or a combination of water-soluble alkaline earth metal carbonates, water-soluble alkaline earth metal bicarbonates, water-soluble alkaline earth metal sulfites, and water-soluble alkaline earth metal bisulfites. The auxiliary agent B can be an inorganic or organic acid with a stronger acidity than carbonic acid or sulfurous acid, such as silicic acid, metasilicic acid, or phosphoric acid, or an organic acid with a stronger acidity than carbonic acid or sulfurous acid, such as acetic acid, citric acid, or oxalic acid. During the preparation process, auxiliary agent A is easily decomposed by heat, generating gas to facilitate the formation of microbubbles in the beads. The added auxiliary agent B can react chemically with incompletely decomposed auxiliary agent A to generate gas, ensuring the complete reaction of auxiliary agent A and producing more gas.

[0038] In this embodiment, the fragrance beads are prepared through the following steps:

[0039] Step B1. Take each raw material component according to the formula;

[0040] Step B2. First, heat the encapsulating material to a molten state. Add the molding agent while stirring, and stir to ensure that the molding agent is fully mixed with the molten encapsulating material. Add the gas trap and stir to mix well. Then add the fragrance and stir to mix well. Next, add the thickener and stir to mix well. Slowly add the aqueous solution of additive A in batches and stir to mix well. Then slowly add the aqueous solution of additive B in batches and stir to mix well, so that additive A and additive B can react fully to obtain a mixture containing microbubbles.

[0041] Step B3. Adjust the material temperature to 50-75℃, granulate it using a granulator, and after cooling and molding, obtain fast-dissolving fragrance beads granules.

[0042] In this embodiment, gas is obtained through the thermal decomposition reaction of additive A or the reaction of additive A and additive B. The gas is then uniformly dispersed in the mixture by the action of a gas trapping agent to form microbubbles. The viscosity of the mixture is adjusted by a thickener, which makes it less likely for the gas to overflow, thereby increasing the volume ratio of microbubbles and reducing the density of the fragrance beads.

[0043] To further illustrate the fast-dissolving fragrance beads provided by the present invention, the following embodiments are provided.

[0044] Example 1

[0045] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 45 parts polyethylene glycol, 5 parts thickener, 5 parts molding agent, 40 parts fragrance, and 5 parts gas trapping agent.

[0046] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 2000;

[0047] The thickener is a glucose ethylene oxide polymer with a weight average molecular weight of 12,000;

[0048] The molding agent is polyethylene glycol stearate;

[0049] The gas trapping agent is silicon dioxide with a particle size of 50 nm.

[0050] The method for preparing the fragrance bead granules is as follows: Take each raw material according to the ratio, first add the encapsulating material to the reaction vessel, heat to a molten state, add the molding agent, gas trapping agent and fragrance while stirring, stir evenly, then add the thickener and stir to mix evenly to obtain a mixture; introduce gas into the mixture and stir evenly to disperse the gas evenly in the mixture; adjust the temperature of the mixture to 60℃, extrude and granulate, and after cooling, obtain the fragrance bead granules.

[0051] The volume percentage of microbubbles in these fragrance beads is 25%; the density of these fragrance beads is 0.73 g / cm³. 3The particle size is 9 mm, and the dissolution time is 10 min.

[0052] Example 2

[0053] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 45 parts encapsulating material, 5 parts thickener, 5 parts molding agent, 40 parts fragrance, 5 parts gas trapping agent, 6 parts additive A and 6 parts additive B.

[0054] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 2000;

[0055] The thickener is a methylglucose ethylene oxide polymer with a weight average molecular weight of 12,000;

[0056] The molding agent is a plant-based modified ester-based quaternary ammonium salt;

[0057] The gas trapping agent is kaolin with a particle size of 50 nm.

[0058] The auxiliary agent A is an alkaline earth metal carbonate;

[0059] The auxiliary agent B is silicic acid.

[0060] The method for preparing the fragrance bead granules is as follows: Take the raw materials according to the formula, first add the encapsulating material to the reaction vessel, heat to a molten state, add the molding agent, gas trapping agent and fragrance while stirring, stir evenly, then add the thickener and stir evenly to obtain a mixture; slowly add the aqueous solution of auxiliary agent A in batches and stir evenly; then slowly add the aqueous solution of auxiliary agent B in batches and stir evenly to allow auxiliary agent A and auxiliary agent B to react fully to obtain a mixture containing microbubbles; adjust the temperature of the mixture to 60℃, extrude and granulate, and after cooling, obtain the fragrance bead granules.

[0061] The volume percentage of microbubbles in these fragrance beads is 45%; the density of these fragrance beads is 0.48 g / cm³. 3 The particle size is 7.0 mm, and the dissolution time is 7.5 min.

[0062] Example 3

[0063] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 20 parts encapsulating material, 2 parts thickener, 10 parts molding agent, 50 parts fragrance, 1 part gas trapping agent, 2 parts additive A and 1 part additive B.

[0064] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 7000;

[0065] The thickener is a sucrose ethylene oxide polymer with a weight average molecular weight of 9000;

[0066] The molding agent is a plant-based modified imidazoline quaternary ammonium salt;

[0067] The gas trapping agent is bentonite with a particle size of 10.

[0068] The auxiliary agent A is a water-soluble alkaline earth metal bicarbonate;

[0069] The auxiliary agent B is metasilicic acid.

[0070] The method for preparing the fragrance beads is the same as in Example 2, and will not be repeated here.

[0071] The volume percentage of microbubbles in these fragrance beads is 10%, and the density of these fragrance beads is 0.92 g / cm³. 3 The particle size is 5.5 mm, and the dissolution time is 4 min.

[0072] Example 4

[0073] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 90 parts of encapsulating material, 10 parts of thickener, 0.1 parts of molding agent, 0.01 parts of fragrance, 10 parts of gas trapping agent, 10 parts of additive A and 10 parts of additive B.

[0074] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 200;

[0075] The thickener is a sorbitol ethylene oxide polymer with a weight average molecular weight of 15,000;

[0076] The molding agent is a plant-based modified amide salt;

[0077] The gas trapping agent is clay with a particle size of 100 nm.

[0078] The auxiliary agent A is a water-soluble alkaline earth metal sulfite;

[0079] The auxiliary agent B is phosphoric acid.

[0080] The method for preparing the fragrance beads is the same as in Example 2, and will not be repeated here.

[0081] The volume percentage of microbubbles in these fragrance beads is 75%; the density of these fragrance beads is 0.10 g / cm³. 3 The particle size is 2.0 mm, and the dissolution time is 2 min.

[0082] Example 5

[0083] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 30 parts encapsulating material, 7 parts thickener, 3 parts molding agent, 20 parts fragrance, 3 parts gas trapping agent, 3 parts additive A and 3 parts additive B.

[0084] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 1000;

[0085] The thickener is a glycerol-ethylene oxide polymer with a weight-average molecular weight of 11,000;

[0086] The molding agent is cationic modified starch;

[0087] The gas trapping agent is natural zeolite with a particle size of 1000 nm.

[0088] The auxiliary agent A is a water-soluble alkaline earth metal bisulfite.

[0089] The auxiliary agent B is acetic acid.

[0090] The method for preparing the fragrance beads is the same as in Example 2, and will not be repeated here.

[0091] The volume percentage of microbubbles in these fragrance beads is 7%; the density of these fragrance beads is...

[0092] 0.95g / cm 3 The particle size was 4.9 mm, and the dissolution time was 6.4 min.

[0093] Example 6

[0094] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 50 parts encapsulating material, 5 parts thickener, 5 parts molding agent, 30 parts fragrance, 4 parts gas trapping agent, 4 parts additive A and 4 parts additive B.

[0095] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 3000;

[0096] The thickener is a pentaerythritol ethylene oxide polymer with a weight average molecular weight of 13,000.

[0097] The molding agent is cationic modified cellulose;

[0098] The gas trapping agent is a molecular sieve with a particle size of 40 nm.

[0099] The auxiliary agent A is a water-soluble alkaline earth metal bicarbonate;

[0100] The auxiliary agent B is citric acid.

[0101] The method for preparing the fragrance beads is the same as in Example 2, and will not be repeated here.

[0102] The volume percentage of microbubbles in these fragrance beads is 42%; the density of these fragrance beads is...

[0103] 0.51g / cm3 The particle size is 5.0 mm, and the dissolution time is 4.5 min.

[0104] Example 7

[0105] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 60 parts encapsulating material, 4 parts thickener, 6 parts forming agent, 40 parts fragrance, 6 parts gas trapping agent, 6 parts additive A and 6 parts additive B.

[0106] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 4000;

[0107] The thickener is a glucose-ethylene oxide-propylene oxide copolymer with a weight average molecular weight of 14,000.

[0108] The molding agent is cationic modified hemicellulose;

[0109] The gas trapping agent is an amorphous metal oxide with a particle size of 30 nm.

[0110] The auxiliary agent A is a combination of alkaline earth metal carbonate and water-soluble alkaline earth metal bicarbonate, each accounting for 50%.

[0111] The auxiliary agent B is oxalic acid.

[0112] The method for preparing the fragrance beads is the same as in Example 2, and will not be repeated here.

[0113] The volume percentage of microbubbles in these fragrance beads is 58%; the density of these fragrance beads is...

[0114] 0.31g / cm 3 The particle size is 4.5 mm, and the dissolution time is 4.9 min.

[0115] Example 8

[0116] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 70 parts encapsulating material, 3 parts thickener, 7 parts molding agent, 45 parts fragrance, 7 parts gas trapping agent, 7 parts additive A and 5 parts additive B.

[0117] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 5000;

[0118] The thickener is a combination of methyl glucose ethylene oxide propylene oxide copolymer and sucrose ethylene oxide propylene oxide copolymer with a weight average molecular weight of 12,000, each accounting for 50%.

[0119] The molding agent is a combination of polyethylene glycol stearate and cationic modified starch, each accounting for 50%;

[0120] The gas trapping agent is a combination of nano-alumina and nano-magnetic iron oxide, with a particle size of 20 nm.

[0121] The auxiliary agent A is a water-soluble alkaline earth metal bicarbonate;

[0122] The auxiliary agent B is citric acid.

[0123] The method for preparing the fragrance beads is the same as in Example 2, and will not be repeated here.

[0124] The volume percentage of microbubbles in these fragrance beads is 65%; the density of these fragrance beads is...

[0125] 0.22g / cm 3 The particle size was 5.8 mm, and the dissolution time was 6.2 min.

[0126] Example 9

[0127] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 80 parts encapsulating material, 3 parts thickener, 2 parts molding agent, 40 parts fragrance, 8 parts gas trapping agent, 8 parts additive A and 8 parts additive B.

[0128] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 6000;

[0129] The thickener is a combination of sorbitol ethylene oxide propylene oxide copolymer and glycerol ethylene oxide propylene oxide copolymer, each accounting for 50%, with a weight average molecular weight of 11,000.

[0130] The molding agent is a combination of cationic modified cellulose and cationic modified hemicellulose;

[0131] The gas trapping agent is modified coke powder or modified fly ash, with a particle size of 200 nm.

[0132] The auxiliary agent A is a water-soluble alkaline earth metal bicarbonate;

[0133] The auxiliary agent B is citric acid.

[0134] The method for preparing the fragrance beads is the same as in Example 2, and will not be repeated here.

[0135] The volume percentage of microbubbles in these fragrance beads is 63%; the density of these fragrance beads is 0.25 g / cm³. 3 The particle size is 6.0 mm, and the dissolution time is 7.1 min.

[0136] Example 10

[0137] A fast-dissolving fragrance bead granule, wherein the raw materials for preparing the fragrance bead granule include, by weight, 90 parts encapsulating material, 8 parts thickener, 9 parts molding agent, 45 parts fragrance, 6 parts gas trapping agent, 6 parts additive A and 6 parts additive B.

[0138] The encapsulating material is polyethylene glycol with a weight-average molecular weight of 800;

[0139] The thickener is a pentaerythritol-ethylene oxide-propylene oxide copolymer with a weight average molecular weight of 12,000.

[0140] The molding agent is polyethylene glycol stearate;

[0141] The gas trapping agent is a combination of modified coffee grounds, modified cellulose, and modified starch in a weight ratio of 1:1:1, and its particle size is 500 nm.

[0142] The auxiliary agent A is a water-soluble alkaline earth metal bicarbonate;

[0143] The auxiliary agent B is citric acid.

[0144] The method for preparing the fragrance beads is the same as in Example 2, and will not be repeated here.

[0145] The volume percentage of microbubbles in these fragrance beads is 46%; the density of these fragrance beads is 0.46 g / cm³. 3 The particle size is 6.5 mm, and the dissolution time is 5.3 min.

[0146] Comparative Example 1

[0147] A fragrance-retaining bead granule is prepared using the same raw materials and preparation method as in Example 1, except that no thickener is added to the raw materials.

[0148] The microbubbles in these fragrance beads comprise 0.1% of the total volume; the density of these fragrance beads is 1.04 g / cm³. 3 The particle size is 5.5 mm, and the dissolution time is 12 min.

[0149] Comparative Example 2

[0150] A fragrance bead granule is prepared using the same raw materials and preparation method as in Example 1, except that polyethylene glycol with a weight-average molecular weight of 13,000 is used as the encapsulating material in the raw materials.

[0151] The microbubbles in these fragrance beads comprise 3% of the total volume; the density of these fragrance beads is 1.01 g / cm³. 3 The particle size is 4.5 mm, and the dissolution time is 13.5 min.

[0152] Comparative Example 3

[0153] A fragrance-retaining bead granule is prepared using the same raw materials and preparation method as in Example 2, except that no thickener is added to the raw materials.

[0154] The microbubbles in these fragrance beads comprise 4% of the total volume; the density of these fragrance beads is [not specified].

[0155] 0.99g / cm 3 The particle size is 5.0 mm, and the dissolution time is 13 min.

[0156] Comparative Example 4

[0157] A fragrance-retaining bead granule is prepared using the same raw materials and preparation method as in Example 2, except that no gas trapping agent is added to the raw materials.

[0158] The volume percentage of microbubbles in the fragrance beads is 5%; the density of the fragrance beads is...

[0159] 0.98g / cm 3 The particle size is 6.0 mm, and the dissolution time is 11 min.

[0160] It should be noted that the fragrances in Examples 1-10 and Comparative Examples 1-4 all contain fragrance and fragrance microcapsules, and the fragrance microcapsules are positively charged.

[0161] As can be seen from Examples 1-10, by selecting polyethylene glycol with a lower molecular weight and adding a thickener, the prepared fast-dissolving fragrance beads can have both a low density, allowing them to float on the water surface without being washed away, and a short dissolution time, all of which can be completely dissolved within 10 minutes. Therefore, they can meet the needs of the quick-wash mode and have a good fragrance retention effect. In Comparative Examples 1 and 3, since no thickener was added and the encapsulating material used was low molecular weight polyethylene glycol, the viscosity during preparation was low, which could not retain air bubbles. As a result, the density was greater than or slightly less than that of water, making it easy to be washed away with water during use and failing to retain fragrance. Furthermore, due to its high density, even when the particle size was smaller than that of Example 1, the dissolution time was still greater than 10 minutes. Even if it was not washed away by water during actual use, it would inevitably have insufficient fragrance retention because it was not completely dissolved before the end of the wash. Comparative Example 2 used high molecular weight polyethylene glycol as the encapsulating material, but no additives A and B were added, and no aeration was carried out during preparation. Therefore, the volume ratio of its microbubbles was very small, resulting in an insignificant decrease in density. Moreover, due to the slow dissolution rate of high molecular weight polyethylene glycol, it could not be completely dissolved within 10 minutes, failing to meet the needs of quick washing. Although a thickener was added to Comparative Example 4, the lack of a gas trapping agent prevented the retention of the generated gas, ultimately resulting in a not particularly significant decrease in density and a dissolution time greater than 10 minutes.

[0162] In summary, the fast-dissolving fragrance beads of this invention, by selecting polyethylene glycol with a small molecular weight as the encapsulating material and adding thickeners and gas traps, can produce fragrance beads with both low density and fast dissolution time, meeting the needs of quick-wash mode and exhibiting good fragrance retention.

[0163] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solution and inventive concept of the present invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A type of fast-dissolving fragrance-retaining bead granules, characterized in that, The density of the fragrance beads is ≤0.98 g / cm³. 3 The particle size is 2.0–9.0 mm, and the dissolution time is 2–10 min. The fragrance beads include encapsulating material, thickener, and fragrance. The encapsulating material is polyethylene glycol with a weight-average molecular weight of 200–7000. The thickener has a weight-average molecular weight of 9000–15000 and includes: glucose ethylene oxide polymer, methyl glucose ethylene oxide polymer, sucrose ethylene oxide polymer, sorbitol ethylene oxide polymer, glycerol ethylene oxide polymer, and pentaerythritol ethylene oxide polymer. The fragrance beads contain one or more of the following: alcohol-based ethylene oxide polymers; or one or more of the following: glucose ethylene oxide-propylene oxide copolymer, methyl glucose ethylene oxide-propylene oxide copolymer, sucrose ethylene oxide-propylene oxide copolymer, sorbitol ethylene oxide-propylene oxide copolymer, glycerol ethylene oxide-propylene oxide copolymer, and pentaerythritol ethylene oxide-propylene oxide copolymer; the fragrance beads also contain a gas trapping agent, which is a porous powder material with a specific surface area of ​​1–1000 m². 2 / g; the fragrance beads also contain microbubbles.

2. The fast-dissolving fragrance beads according to claim 1, characterized in that, The volume percentage of the microbubbles is 10-75%.

3. The fast-dissolving fragrance beads according to claim 1, characterized in that, The raw materials for preparing the fragrance beads, by weight, include: 20-90 parts of encapsulating material, 2-10 parts of thickener, 0.1-10 parts of molding agent, 0.01-50 parts of fragrance, and 1-10 parts of gas trapping agent.

4. The fast-dissolving fragrance beads according to claim 3, characterized in that, The fragrance includes flavorings and fragrance microcapsules, the outer wall of which is positively charged.

5. The fast-dissolving fragrance beads according to claim 3, characterized in that, The gas trapping agent includes one or more of the following: silica, clay, natural zeolite, molecular sieve, amorphous metal oxide, nano-alumina, nano-magnetic iron oxide, modified coke powder, modified fly ash, modified coffee grounds, modified cellulose, and modified starch.

6. The fast-dissolving fragrance beads according to claim 3, characterized in that, The gas trapping agent includes kaolin and / or bentonite.

7. The fast-dissolving fragrance beads according to claim 3, characterized in that, The particle size of the gas trap is 10–1000 nm.

8. The fast-dissolving fragrance beads according to claim 3, characterized in that, The raw materials for preparing the fragrance beads, by weight, also include: 0.1 to 10 parts of additive A and 0.1 to 10 parts of additive B; the reaction of additive A and additive B produces gas.

9. The fast-dissolving fragrance beads according to claim 3, characterized in that, The molding agent includes one or more combinations of polyethylene glycol stearate, plant-based modified ester-based quaternary ammonium salt, plant-based modified imidazoline quaternary ammonium salt, plant-based modified amide salt, cationic modified starch, cationic modified cellulose, and cationic modified hemicellulose.