Fragrance-retaining laundry gel bead content with good flowability and preparation method and application of fragrance-retaining laundry gel bead content

Abstract

The invention relates to the technical field of daily chemicals, and discloses a fragrant laundry gel bead content with good fluidity and a preparation method and application thereof, and the laundry gel bead content comprises the following components in percentage by mass: a premix A, a premix B and 0.02-0.4% of microcapsule essence; the premix A comprises 1-10% of hydrogenated castor oil, 10-25% of a surfactant serving as an emulsifier and water, and the laundry gel bead content contains 0.05-0.2% of hydrogenated castor oil; the premixture B is prepared from 10 to 30 percent of glycerol, 10 to 30 percent of propylene glycol, 10 to 30 percent of polyether type nonionic surfactant and 10 to 20 percent of anionic surfactant. According to the invention, the variety and proportion of the raw materials are regulated and controlled, so that the suspension force required by the suspension microcapsule essence is obtained in the condensate bead system, the hidden danger of large viscosity increase of the condensate bead system caused by hydrogenated castor oil is reduced from the source, and the storage and use stability of the condensate beads is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of daily chemical technology, in particular to a fragrance-remaining laundry condensate bead content with good fluidity and a preparation method and application thereof. BACKGROUND

[0002] In recent years, fragrance washing and protection products have attracted more and more attention from the public. At present, fragrance washing and protection products have developed to pursue the actual effect of long-lasting fragrance. Laundry condensate beads are a new type of washing product, which are more and more popular among consumers. Unlike conventional liquid detergents, the content of laundry condensate beads is wrapped with a water-soluble film. In order to avoid the destruction of the water-soluble film by water in the system, an organic solvent is used as the main solvent system. In order to achieve the effect of long-lasting fragrance in laundry condensate beads, microcapsule perfume can be added to the condensate beads. However, unlike general detergents, the microcapsule perfume added to the non-continuous phase system will cause aggregation and stratification, which is particularly obvious in the appearance of the condensate beads. For example, patent CN 108893212 A discloses a long-lasting fragrance laundry condensate bead, which adds microcapsule perfume to achieve the purpose of fragrance retention. However, there are still many difficulties, such as stratification and turbidity during long-term storage, which affect the performance and consumer experience of the product.

[0003] Therefore, a suspending agent needs to be added to improve the suspension stability of the microcapsule perfume. There are three types of suspending agents in detergents, cellulose, hydrogenated castor oil and polymer. The hydrogenated castor oil suspending agent is the first choice due to its high cost performance. However, the addition of this type of suspending agent in the condensate beads will cause significant changes in the rheological properties of the system during cooling, which is usually manifested as a dramatic increase in the viscosity of the suspending agent system to a paste-like state. For example, patent CN 109880700 A discloses an external structured system composition for liquid detergents and liquid detergents thereof. The suspending agent paste formed by incubation at 55-80℃ is not conducive to subsequent addition and use in condensate beads. In addition, the application of this type of suspending agent in the condensate bead system will also cause a dramatic increase in the viscosity of the system during the storage period, thereby affecting the appearance and use experience and other practical application problems. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a fragrance-remaining laundry condensate bead content with good fluidity and a preparation method and application thereof. By adjusting the type of emulsifier, the ratio of emulsifier / HCO, the ratio of HCO / microcapsule perfume and the average particle size of emulsion in the condensate bead content, the prepared condensate bead has excellent suspension performance and fluidity, which can ensure the appearance and stability during storage and use during the shelf life.

[0005] The object of the present application is achieved by the following technical solutions: In a first aspect, the present application provides a laundry fragrance-retaining condensate content with good fluidity, which comprises, by mass percentage, premix A, premix B and 0.02-0.4% of microcapsule fragrance; the premix A comprises 1-10% of hydrogenated castor oil, 10-25% of surfactant as emulsifier and water, and contains 0.05-0.2% of hydrogenated castor oil in the laundry condensate content; the premix B comprises 10-30% of glycerol, 10-30% of propylene glycol, 10-30% of polyether non-ionic surfactant and 10-20% of anionic surfactant; the premix A is an emulsion with an average particle size of 50-150 μm; and the surfactant as emulsifier is a surfactant with a long carbon chain of C10 or more and containing EO and / or PO and / or aromatic hydrocarbon, such as sodium sulfate, sodium carboxylate or sodium sulfonate.

[0006] The present application uses extremely low content of hydrogenated castor oil, which cannot form a network structure after being emulsified, solidified and crystallized. In order to obtain good suspension force of hydrogenated castor oil under the condition of extremely low content, the types of emulsifier and solvent are selected and the content ratio of hydrogenated castor oil is controlled, and the homogenization parameters of the emulsion are controlled to obtain emulsion droplets with a specific particle size range in which the hydrogenated castor oil is wrapped. Then, the suspension performance is generated by cooling and crystallization. By limiting the proportion of microcapsule fragrance added, the suspension force is matched with the amount of microcapsule fragrance to be suspended, so that good suspension effect is achieved.

[0007] Since the content of hydrogenated castor oil added in the present application is low, the particle size of the emulsion droplets is particularly important for the suspension performance and the appearance quality of the material liquid. If the droplet size is small, it is relatively stable, and it is not easy to demulsify or the demulsification speed is slow during the subsequent transfer to the condensate material liquid, which leads to incomplete crystallization form during cooling and affects the suspension performance. If the droplet size is large, it will lead to rapid demulsification due to sudden temperature change during the transfer stage, and the hydrogenated castor oil precipitates and solidifies and cannot be emulsified in the condensate, which affects the appearance quality and suspension performance of the material liquid.

[0008] Preferably, in the laundry condensate content, the mass ratio of microcapsule fragrance to hydrogenated castor oil is not more than 8, and more preferably, the mass ratio of microcapsule fragrance to hydrogenated castor oil is not more than 4.

[0009] Preferably, in the laundry condensate content, the mass percentage of premix B is 75-99%.

[0010] Preferably, the premix A further comprises other auxiliary agents, and the other auxiliary agents are used to adjust the pH of the premix A to 6-9.

[0011] Preferably, the premix A comprises, by mass percentage, 1-10% hydrogenated castor oil, 10-25% surfactant as emulsifier, other additives, and water.

[0012] Preferably, the premix B further includes other additives used to adjust the pH of the premix B to 6-8.

[0013] Preferably, the premix B comprises, by mass percentage, 10-30% glycerol, 10-20% propylene glycol, 10-40% polyether nonionic surfactant, 10-20% anionic surfactant, other additives, and water.

[0014] Preferably, the other additives are acids or bases.

[0015] Preferably, the surfactant used as an emulsifier includes one or more of the following: sodium fatty alcohol polyether sulfate (AES), fatty alcohol polyoxyethylene ether (AEO), sodium fatty alcohol polyether carboxylate (AEC), oil ethoxylate sulfonate (SNS-80), and sodium benzenesulfonate surfactant.

[0016] Preferably, the polyether-type nonionic surfactant includes one or more of fatty alcohol alkoxylates, fatty acid ester ethoxylates, oil ethoxylates, and fatty alcohol amide ethoxylates.

[0017] Preferably, the anionic surfactant includes one or more of aromatic anionic surfactants, sulfonate surfactants, fatty alcohol surfactants, fatty acid surfactants, and anionic amino acid surfactants.

[0018] Preferably, the contents of the laundry detergent pods also include liquid fragrance.

[0019] Secondly, the present invention provides a method for preparing the contents of laundry detergent pods, comprising the following steps: (1) Mix the surfactant used as an emulsifier with water, adjust the pH to 6-9, heat to 85-95℃, add hydrogenated castor oil, turn on the homogenizer, and fully emulsify until the average particle size of the emulsion is 50-150μm to obtain premix A. (2) After mixing glycerol, propylene glycol, polyether nonionic surfactant and anionic surfactant, adjust the pH to 6-9 and heat to 55-85℃ to obtain premix B; (3) Under stirring conditions, premix A is added to premix B and kept at a temperature of ≥55°C for a period of time, and then cooled to below 40°C to obtain the composition; (4) Add microcapsule fragrance to the composition, and the contents of laundry detergent pods are obtained by discharging.

[0020] A certain amount of hydrogenated castor oil is melted at high temperature and then present in a system with a specific ratio of emulsifier. At this stage, the hydrogenated castor oil is simply dispersed in the system due to melting at high temperature; the temperature should not be too low, otherwise the hydrogenated castor oil will solidify. After complete melting, homogenization is performed. The emulsifying ability of the emulsifier is used to encapsulate the hydrogenated castor oil into small droplets of a certain size. This improves the encapsulation rate of the emulsifier, trapping the hydrogenated castor oil inside the droplets, and also prevents rapid precipitation and solidification during the subsequent transfer from premix A to premix B due to the sudden temperature change. Adding microencapsulated fragrance after forming the composition reduces the breakage rate of the microencapsulated fragrance and improves the fragrance retention effect.

[0021] Preferably, in step (1), the homogenization frequency is 20-60Hz and the homogenization time is 20-40min.

[0022] Preferably, in step (3), the heat preservation time is 10-60 min; and the cooling rate is 0.5-2.0℃ / min.

[0023] Thirdly, the present invention provides an application of the contents of laundry detergent pods in the preparation of laundry detergent pods.

[0024] As a preferred method, the following steps are included: encapsulating the contents of the laundry pods with an aqueous membrane to obtain laundry pods with good suspension properties and stability.

[0025] Preferably, the water-soluble film is a polyvinyl alcohol film, starch film, gelatin film, or polyvinyl acid film.

[0026] Compared with the prior art, the present invention has the following beneficial effects: (1) Based on the characteristics of high-temperature emulsification and cooling crystallization of hydrogenated castor oil to produce suspension properties, by controlling factors such as the type of emulsifier, the ratio of emulsifier to HCO, the ratio of HCO to microcapsule flavor, the average particle size of the emulsion, the temperature holding time at key points and the cooling rate, a higher suspension force per unit of HCO was obtained. (2) In the bead system, as long as the content of hydrogenated castor oil is low, the suspension force required for the suspension microcapsule flavor can be obtained, which greatly reduces the risk of large viscosity increase caused by hydrogenated castor oil to the bead system from the source, and ensures the appearance and stability of the bead storage and use during the shelf life. Detailed Implementation

[0027] The technical solution of the present invention will be illustrated below with specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0028] All raw materials used in this invention are commercially available industrial raw materials, and different surfactants have different water contents. Unless otherwise specified, the contents in the table below are the amounts of industrial raw materials added, meaning that the raw materials already contain a certain amount of water, and are not the pure content.

[0029] The raw materials used in this invention include: Hydrogenated castor oil: HCO, 100% by mass, solid; Glycerin: 95% by mass, with the remainder being water; Propylene glycol: 99% by mass, with the remainder being water; Microencapsulated flavoring: 30% solids, the remainder being water; Sodium ethoxylate sulfonate of oils and fats: SNS-80, with a mass content of 70% and the remainder being water; Sodium fatty alcohol polyether sulfate: AES, 70% by mass, balance being water; Sodium alkylbenzene sulfonate: LAS, solid; Fatty alcohol polyoxyethylene ether: AEO-9, with a mass content of 99% and the balance being water; Coconut oil fatty acids: 70% by mass, the remainder being water; Triethanolamine: 85% by mass, with the remainder being water; Sodium citrate: 100% by mass, solid.

[0030] Additionally, Table 1 shows the formulations of premix B used in Examples 1-13 and Comparative Examples 1-6.

[0031] Table 1 Formulation of Premix B The present invention tests the contents of the laundry detergent pods obtained in Examples 1-13 and Comparative Examples 1-6, as well as the laundry detergent pods themselves: Viscosity test: The test was conducted at 25°C.

[0032] Yield stress test (levitation force): Based on the data measured by the rheometer, the σ0 yield stress was obtained by fitting the data using Origin, with a fitting range of 0.01-100s. -1 The correlation coefficients were all greater than 0.999; then the yield stress was calculated according to the Herschel-Bulkley model.

[0033] 45℃ Liquid Appearance Stability: Store at 45℃ and observe the appearance of the liquid inside the laundry detergent pods for any precipitation, layering, or sedimentation. "√" indicates no precipitation, layering, or sedimentation, while "×" indicates precipitation, layering, or sedimentation.

[0034] Appearance stability of the room-temperature liquid material: Store at room temperature and observe whether there is precipitation, stratification, or sedimentation in the liquid material of the laundry beads. "√" indicates no precipitation, stratification, or sedimentation in the liquid material, and "×" indicates precipitation, stratification, or sedimentation in the liquid material.

[0035] Appearance of the laundry beads: If the appearance is full and there is no visible precipitation or stratification to the naked eye, it is qualified; otherwise, it is unqualified.

[0036] Viscosity at 45°C for 1M (mPa·s): After storing at 45°C for 1 month, conduct a viscosity test at 25°C.

[0037] Rating of fragrance retention intensity: Wash a towel at a concentration of 0.5 g / L. After washing in the washing machine, randomly select 20 evaluators to score the fragrance retention intensity of the towel (evaluate after rubbing); after standing for 120 h, let the original 20 evaluators evaluate the fragrance retention intensity again.

[0038] Example 1 (1) After mixing the surfactant (LAS) as an emulsifier and water evenly, add other additives (triethanolamine) to adjust the pH of the system to 6 - 9. Heat up to 85°C, then add solid HCO. After HCO is completely melted, start homogenization. The homogenization frequency is 60 Hz and the homogenization time is 40 min to obtain the premix A; (2) After mixing propylene glycol, glycerol, surfactants (SNS-80, AEO-9, LAS, coconut oil fatty acid) and water evenly, use sodium citrate and triethanolamine to adjust the pH of the system to 6 - 8. Heat up to 60°C and keep it to obtain the premix B; (3) Under stirring conditions, add the premix A to the premix B and keep it at 60°C for 20 min, then cool down to below 40°C at a rate of 1.0°C / min to obtain the composition; (4) Add microcapsule fragrance and liquid fragrance to the composition, and discharge to obtain the content of the laundry beads.

[0039] (5) Wrap the content of the laundry beads with a water-soluble film to obtain the laundry beads.

[0040] Example 2 (1) After mixing the surfactant (LAS) as an emulsifier and water evenly, add other additives (triethanolamine) to adjust the pH of the system to 6 - 9. Heat up to 85°C, then add solid HCO. After HCO is completely melted, start homogenization. The homogenization frequency is 20 Hz and the homogenization time is 20 min to obtain the premix A; (2) After mixing propylene glycol, glycerol, surfactants (SNS-80, AEO-9, LAS, coconut oil fatty acid) and water evenly, use sodium citrate and triethanolamine to adjust the pH of the system to 6 - 8. Heat up to 60°C and keep it to obtain the premix B; (3) Under stirring conditions, premix A is added to premix B and kept at 60°C for 20 min, and then cooled to below 40°C at a rate of 1.0°C / min to obtain the composition; (4) Add microcapsule fragrance and liquid fragrance to the composition, and the contents of laundry detergent pods are obtained by discharging.

[0041] (5) Wrap the contents of the laundry detergent pods with a water-soluble film to obtain laundry detergent pods.

[0042] Comparative Example 1 (1) After the surfactant (LAS) used as an emulsifier is mixed evenly with water, other auxiliary agents (triethanolamine) are added to adjust the pH of the system to 6-9. The temperature is raised to 85°C, and then solid HCO is added. After the HCO is completely dissolved, the homogenizer is turned on. The homogenization frequency is 10Hz and the homogenization time is 20min to obtain premix A. (2) After mixing propylene glycol, glycerol, surfactants (SNS-80, AEO-9, LAS, coconut oil fatty acids) and water evenly, the pH of the system is adjusted to 6-8 with sodium citrate and triethanolamine, and the temperature is heated to 60℃ and maintained to obtain premix B. (3) Under stirring conditions, premix A is added to premix B and kept at 60°C for 20 min, and then cooled to below 40°C at a rate of 1.0°C / min to obtain the composition; (4) Add microcapsule fragrance and liquid fragrance to the composition, and the contents of laundry detergent pods are obtained by discharging.

[0043] (5) Wrap the contents of the laundry detergent pods with a water-soluble film to obtain laundry detergent pods.

[0044] Examples 3-9, 12-13 and Comparative Examples 2-3, 5-6 (1) After the surfactant (LAS) used as an emulsifier is mixed evenly with water, other auxiliary agents (triethanolamine) are added to adjust the pH of the system to 6-9. The temperature is raised to 85°C, and then solid HCO is added. After the HCO is completely dissolved, the homogenizer is turned on. The homogenization frequency is 40Hz and the homogenization time is 20min to obtain premix A. (2) After mixing propylene glycol, glycerol, surfactants (SNS-80, AEO-9, LAS, coconut oil fatty acids) and water evenly, the pH of the system is adjusted to 6-8 with sodium citrate and triethanolamine, and the temperature is heated to 60℃ and maintained to obtain premix B. (3) Under stirring conditions, premix A is added to premix B and kept at 60°C for 20 min, and then cooled to below 40°C at a rate of 1.0°C / min to obtain the composition; (4) Add microcapsule fragrance and liquid fragrance to the composition, and the contents of laundry detergent pods are obtained by discharging.

[0045] (5) Wrap the contents of the laundry detergent pods with a water-soluble film to obtain laundry detergent pods.

[0046] Example 10 (1) After the surfactant (LAS) used as an emulsifier is mixed evenly with water, other auxiliary agents (triethanolamine) are added to adjust the pH of the system to 6-9. The temperature is raised to 85°C, and then solid HCO is added. After the HCO is completely dissolved, the homogenizer is turned on. The homogenization frequency is 40Hz and the homogenization time is 20min to obtain premix A. (2) After mixing propylene glycol, glycerol, surfactants (SNS-80, AEO-9, LAS, coconut oil fatty acids) and water evenly, the pH of the system is adjusted to 6-8 with sodium citrate and triethanolamine, and the temperature is heated to 60℃ and maintained to obtain premix B. (3) Under stirring conditions, premix A is added to premix B and kept at 60°C for 10 min, and then cooled to below 40°C at a rate of 1.0°C / min to obtain the composition; (4) Add microcapsule fragrance and liquid fragrance to the composition, and the contents of laundry detergent pods are obtained by discharging.

[0047] (5) Wrap the contents of the laundry detergent pods with a water-soluble film to obtain laundry detergent pods.

[0048] Example 11 (1) After the surfactant (LAS) used as an emulsifier is mixed evenly with water, other auxiliary agents (triethanolamine) are added to adjust the pH of the system to 6-9. The temperature is raised to 85°C, and then solid HCO is added. After the HCO is completely dissolved, the homogenizer is turned on. The homogenization frequency is 40Hz and the homogenization time is 20min to obtain premix A. (2) After mixing propylene glycol, glycerol, surfactants (SNS-80, AEO-9, LAS, coconut oil fatty acids) and water evenly, the pH of the system is adjusted to 6-8 with sodium citrate and triethanolamine, and the temperature is heated to 60℃ and maintained to obtain premix B. (3) Under stirring conditions, premix A is added to premix B and kept at 60°C for 60 min, and then cooled to below 40°C at a rate of 1.0°C / min to obtain the composition; (4) Add microcapsule fragrance and liquid fragrance to the composition, and the contents of laundry detergent pods are obtained by discharging.

[0049] (5) Wrap the contents of the laundry detergent pods with a water-soluble film to obtain laundry detergent pods.

[0050] Comparative Example 4 (1) After the surfactant (LAS) used as an emulsifier is mixed evenly with water, other auxiliary agents (triethanolamine) are added to adjust the pH of the system to 6-9. The temperature is raised to 85°C, and then solid HCO is added. After the HCO is completely dissolved, the homogenizer is turned on. The homogenization frequency is 40Hz and the homogenization time is 20min to obtain premix A. (2) After mixing propylene glycol, glycerol, surfactants (SNS-80, AEO-9, LAS, coconut oil fatty acids) and water evenly, the pH of the system is adjusted to 6-8 with sodium citrate and triethanolamine, and the temperature is heated to 60℃ and maintained to obtain premix B. (3) Under stirring conditions, premix A was added to premix B and kept at 60°C for 240 min, and then cooled to below 40°C at a rate of 1.0°C / min to obtain the composition; (4) Add microcapsule fragrance and liquid fragrance to the composition, and the contents of laundry detergent pods are obtained by discharging.

[0051] (5) Wrap the contents of the laundry detergent pods with a water-soluble film to obtain laundry detergent pods.

[0052] Table 2. Laundry detergent pod formulations in Examples 1-2 and Comparative Example 1. Table 3 Test results of Examples 1-2 and Comparative Example 1 Table 2 shows the laundry detergent pod formulations in Examples 1-2 and Comparative Example 1. The average particle size of the premix A emulsion differs between Examples 1-2 and Comparative Example 1. As shown in Table 3, because the homogenized droplets of premix A in Comparative Example 1 are larger, the demulsification rate is faster when the material is transferred to the pods, resulting in HCO precipitation in the pod system. This precipitation becomes more pronounced with prolonged storage time, and is even more evident after the liquid is encapsulated into pods. In Examples 1-2, the average particle size of the homogenized droplets of premix A is between 100-120 μm, ensuring that demulsification and crystallization are completed during the transfer process, forming a pod liquid with good suspension and flowability.

[0053] Table 4. Laundry detergent pod formulations in Examples 3-5 and Comparative Example 2. Table 5 Test results of Examples 3-5 and Comparative Example 2 Table 4 shows the laundry detergent pod formulations in Examples 3-5 and Comparative Example 2. The HCO content in the laundry detergent pods differs between Examples 3-5 and Comparative Example 2. As shown in Table 5, the HCO content in the laundry detergent pods in Comparative Example 2 is relatively high, which prevents timely and uniform dispersion, resulting in cloudy particles and high viscosity in the liquid. The pod liquid is also prone to softening and collapsing during pod coating and storage.

[0054] Table 6. Laundry detergent pod formulations in Examples 6-9 and Comparative Example 3. Table 7 Test results of Examples 6-9 and Comparative Example 3 Table 6 shows the laundry detergent pod formulations in Examples 6-9 and Comparative Example 3. The amounts of premix A and microcapsule fragrance added in Examples 6-9 and Comparative Example 3 are different. As shown in Table 7, in Comparative Example 3, the HCO content in the pod solution is low, while the content of microcapsule fragrance that needs to be suspended is high. This makes the microcapsule fragrance prone to precipitation during high-temperature storage under low suspension force. In contrast, the pod solutions in Examples 9 and Comparative Example 3 have the same HCO content, but because the content of microcapsule fragrance that needs to be suspended is low, the solution can remain stable under lower suspension force. Therefore, the suspension performance of droplets of a certain size formed after high-temperature emulsification of HCO, after cooling and crystallization, is related to the amount of the substance to be suspended. That is, the ratio of microcapsule fragrance to HCO in the pod solution needs to be limited within a certain range to ensure a good suspension effect. In addition, in Examples 6-9, under a one-month stability test at 45°C, the viscosity increase was not significant, and there were no abnormalities in the flow inside the granules. This indicates that the technology of this patent also solves the problem of excessive viscosity increase caused by suspending microcapsule fragrances in granules, which affects usability and aesthetics.

[0055] Table 8. Laundry detergent pod formulations in Examples 10-11 and Comparative Example 4. Table 9 Test results of Examples 10-11 and Comparative Example 4 Table 8 shows the laundry detergent pod formulations in Examples 10-11 and Comparative Example 4. The heating and holding times after adding premix A to premix B differ between Examples 10-11 and Comparative Example 4. As shown in Table 9, in Comparative Example 4, due to the excessively long holding time, the structure of HCO in the liquid was not sufficiently stable, resulting in a lower yield stress and easier structural damage at high temperatures. In contrast, the holding time in Examples 10-11 was more sufficient, leading to a more stable structure of HCO in the liquid and a higher yield stress.

[0056] Table 10 Laundry Detergent Pod Formulations in Examples 12-13 and Comparative Examples 5-6 Table 11 Test results of Examples 12-13 and Comparative Examples 5-6 Table 10 shows the laundry detergent pod formulations in Examples 12-13 and Comparative Examples 5-6. The emulsifier content in premix 1 differs between Examples 12-13 and Comparative Examples 5-6. As shown in Table 11, the emulsifier content in premix 1 of Comparative Example 6 is too low, resulting in HCO3- precipitation due to insufficient dispersion after addition, leading to particulate matter in the liquid and affecting its use. Conversely, the emulsifier content in premix 1 of Comparative Example 7 is too high, resulting in high viscosity of the liquid during the heat preservation stage, making it impossible for the laboratory agitator to effectively mix the liquid evenly, thus hindering the transfer to premix 2.

[0057] Table 12 Sensory evaluation of the fragrance retention of laundry detergent pods in Examples 7-8 (out of 10) Table 13 Shelf-life stability of laundry pods in Example 8 As shown in Table 12, the laundry detergent pods prepared in this invention exhibit significantly better fragrance retention than commercially available pods without or with added microcapsule fragrance. Commercially available ordinary pod 2, containing microcapsule fragrance, has a higher fragrance retention after 120 hours than commercially available ordinary pod 1, but it is still far lower than the laundry detergent pods of this invention, indicating that the laundry detergent pods of this invention also have a long-lasting fragrance effect. As shown in Table 13, a long-term shelf-life stability study of the laundry detergent pods obtained in Example 8 shows that the yield stress increases over time, better ensuring the product's suspension performance. Therefore, the results indicate that the laundry detergent pods of this invention can be stored within their shelf life, with stable suspension performance and appearance, and good flowability of the pod liquid.

[0058] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made using the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A fragrance-remaining laundry condensation bead content having good flowability, characterized by, The laundry condensation bead content comprises, by mass percentage, premix A, premix B, and 0.02-0.4% of microcapsule perfume; the premix A comprises 1-10% of hydrogenated castor oil, 10-25% of surfactant as emulsifier, and water, and contains 0.05-0.2% of hydrogenated castor oil in the laundry condensation bead content; the premix B comprises 10-30% of glycerol, 10-30% of propylene glycol, 10-30% of polyether nonionic surfactant, and 10-20% of anionic surfactant; the premix A is an emulsion with an average particle size of 50-150 μm; the surfactant as emulsifier is a surfactant with a long carbon chain of C10 or more and containing EO and / or PO and / or aromatic hydrocarbon, sodium sulfate, sodium carboxylate, or sodium sulfonate.

2. The laundry fragrance-remaining bead content according to claim 1, wherein the laundry fragrance-remaining bead content is a laundry detergent bead content. The premix A further comprises other auxiliary agents for adjusting the pH of the premix A to 6-9.

3. The laundry scent-releasing bead content having good fluidity according to claim 1 or 2, wherein the perfume is a perfume having a viscosity of 10 to 1000 mPa-s at 25°C. The premix B further comprises other auxiliary agents for adjusting the pH of the premix B to 6-8.

4. The laundry fragrance-remaining bead content according to claim 1, wherein the laundry fragrance-remaining bead content is a laundry detergent bead content. The surfactant as emulsifier comprises one or more of sodium fatty alcohol polyether sulfate, fatty alcohol polyoxyethylene ether, sodium fatty alcohol polyether carboxylate, oil ethoxylate sulfonate, and sodium benzene sulfonate surfactant.

5. The laundry fragrance-remaining bead content according to claim 1, wherein the laundry fragrance-remaining bead content is a laundry detergent bead content. The polyether nonionic surfactant comprises one or more of fatty alcohol alkoxylate, fatty acid ester ethoxylate, oil ethoxylate, and fatty alcohol amide ethoxylate.

6. The laundry fragrance-keeping and good-flowing content of the condensed beads according to claim 1 or 4 or 5, characterized in that, The anionic surfactant comprises one or more of aromatic anionic surfactant, sulfonate type surfactant, fatty alcohol type surfactant, fatty acid type surfactant, and anionic amino acid surfactant.

7. A process for the preparation of laundry compact beadlets content according to any one of claims 1 to 6, characterized in that, The method comprises the following steps: (1) mixing the surfactant as emulsifier and water, adjusting the pH to 6-9, heating to 85-95 ℃, then adding hydrogenated castor oil, starting homogenization, and fully emulsifying to an emulsion average particle size of 50-150 μm to obtain premix A; (2) mixing glycerol, propylene glycol, polyether nonionic surfactant, and anionic surfactant, adjusting the pH to 6-9, and heating to 55-85 ℃ to obtain premix B; (3) under stirring, adding premix A into premix B, incubating at a temperature of ≥55 ℃ for a period of time, and then cooling to below 40 ℃ to obtain the composition; (4) adding microcapsule perfume into the composition, and discharging to obtain the laundry condensation bead content.

8. The method for preparing the contents of laundry detergent pods as described in claim 7, characterized in that, In step (1), the frequency of homogenization is 20-60 Hz, and the homogenization time is 20-40 min.

9. The method for preparing the contents of laundry detergent pods as described in claim 7 or 8, characterized in that, In step (3), the incubation time is 10-60 min, and the cooling rate is 0.5-2.0 ℃ / min.

10. Use of the laundry condensation bead content of any one of claims 1-6 or the laundry condensation bead content prepared by the method of any one of claims 7-9 in preparing laundry condensation beads.

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