Sustained-release functional material and use thereof

Abstract

The present invention relates to a sustained-release functional material and a use thereof. The sustained-release functional material comprises an insoluble substrate and a functional substance, wherein the lowest processing temperature of the insoluble substrate is lower than the highest failure temperature of the functional substance. In the provided sustained-release functional material, by defining the matching of the processing temperatures of the insoluble substrate and of the functional substance, the preparation of the sustained-release functional material can be ensured while it can be ensured that the functional substance will not fail. The sustained-release functional material has a better application effect.

Description

A sustained-release functional material and its application

[0001] The present disclosure claims the priority of the Chinese patent application with application number 202310788825.3, filed with the Patent Office of China on June 28, 2023, and entitled “A sustained-release functional material and its application”, the priority of the Chinese patent application with application number 202310781013.6, filed with the Patent Office of China on June 28, 2023, and entitled “A sustained-release carrier material and its application”, and the priority of the Chinese patent application with application number 202310783918.7, filed with the Patent Office of China on June 28, 2023, and entitled “A sustained-release carrier material and its application”, the entire contents of which are incorporated by reference into the present disclosure. Technical Field

[0002] The present disclosure relates to the field of sustained-release technology, and in particular to a sustained-release functional material and applications thereof. Background Art

[0003] Currently, the main approach to achieving multiple functions, such as deodorizing, descaling, and sterilizing, is to add functional substances to the working environment. These include aromatherapy for deodorizing, salts for descaling, and silver phosphate, copper, zinc, guanidine, and healthy natural agents for sterilization. To facilitate use and maintain the long-term effectiveness of the functional substances, the commonly used approach is to load the functional substances into a carrier, such as silver phosphate loaded into glass, natural antimicrobial agents and guanidines loaded into a plastic matrix, and descaling salts loaded into activated carbon. These approaches can, to a certain extent, ensure that the effects of the functional substances last for a certain period of time. However, these functional substances are mostly inorganic or small molecules, which are essentially randomly dispersed in the matrix, making it difficult to form a stable release pathway. Therefore, in theory, only the functional substances dispersed on the surface can be released, while the functional substances within the matrix are difficult to release, and the functional substances cannot fully exert their effects. Alternatively, similar to the functional components loaded into activated carbon, although the functional substances within the matrix can exert a certain effect, they cannot achieve stable and long-term effects.

[0004] Therefore, in order to ensure the long-term sustained release of functional components such as deodorization, descaling or sterilization, it is necessary to screen materials that can cooperate with each other and ultimately form a sustained-release carrier structure with a sustained-release effect to meet application requirements.

[0005] Summary of the Invention

[0006] In order to solve the above technical problems, the present disclosure provides a sustained-release functional material and application thereof.

[0007] In a first aspect, the present disclosure provides a sustained-release functional material, comprising an insoluble substrate and a functional substance, wherein the lowest processing temperature of the insoluble substrate is lower than the highest failure temperature of the functional substance.

[0008] As a preferred technical solution of the present disclosure, the sustained-release functional material further comprises a water-soluble substrate, the functional substance is loaded on the water-soluble substrate, and the lowest processing temperature of the water-soluble substrate is lower than the highest failure temperature of the functional substance.

[0009] As a preferred technical solution of the present disclosure, the functional substance is an inorganic functional substance, and the failure temperature is the decomposition temperature of the inorganic functional substance.

[0010] As a preferred technical solution of the present disclosure, the functional substance is an organic compound functional substance, and the failure temperature is the decomposition temperature or inactivation temperature of the organic compound functional substance.

[0011] As a preferred technical solution of the present disclosure, the insoluble substrate is a water-insoluble polymer, and the minimum processing temperature of the insoluble substrate is the glass transition temperature of the water-insoluble polymer.

[0012] As a preferred technical solution of the present disclosure, the water-soluble substrate is a water-soluble polymer, and the processing temperature of the water-soluble substrate is the glass transition temperature of the water-soluble polymer.

[0013] As a preferred technical solution of the present disclosure, the preparation method of the sustained-release functional material comprises: loading the functional substance on the water-soluble substrate, and then blending the water-soluble substrate with the insoluble substrate at a processing temperature to obtain the sustained-release functional material, wherein:

[0014] The lowest processing temperature of the water-soluble substrate and the insoluble substrate is ≤ the processing temperature ≤ the highest failure temperature of the functional substance. Preferably, the processing temperature is an intermediate temperature between the lowest processing temperature and the highest failure temperature.

[0015] As a preferred technical solution of the present disclosure, the water-soluble substrate and the functional substance loaded on the water-soluble substrate form a water-soluble phase in the sustained-release carrier structure, and the water-soluble phase is a continuous phase.

[0016] As a preferred technical solution of the present disclosure, the insoluble matrix forms a non-water-soluble phase in the sustained-release carrier structure, and the non-water-soluble phase is a continuous phase.

[0017] As a preferred technical solution of the present disclosure, the short side size of the phase region of the water-soluble phase is 100 nm to 10 μm, and the short side size of the phase region of the non-water-soluble phase is 100 nm to 10 μm.

[0018] As a preferred technical solution of the present disclosure, the functional substance is selected from any one or a combination of at least two of aromatherapy materials, detergents, scale inhibitors, bactericides, bacteriostatic agents, water treatment materials, clothing treatment agents, color fixing agents, biofilm removers or dyes.

[0019] In a second aspect, the present disclosure provides a use of the sustained-release functional material as described in the first aspect in a washing device.

[0020] As a preferred technical solution of the present disclosure, the slow-release functional material is used in the aromatherapy module, washing module, scale prevention module, sterilization module, antibacterial module, water treatment module, clothing treatment module, color fixing module or dyeing module of the washing device.

[0021] The above technical solution provided by the embodiments of the present disclosure has the following advantages compared with the prior art:

[0022] (1) In the sustained-release functional material provided by the present disclosure, by limiting the matching of the processing temperature of the insoluble substrate and the functional substance, the preparation of the sustained-release functional material can be ensured, and at the same time, the functional substance can be ensured not to lose effectiveness, thereby having a better application effect;

[0023] (2) In the present disclosure, by limiting the processing temperature of the sustained-release functional material, the water-soluble substrate and the insoluble substrate in the sustained-release functional material can form a better co-continuous phase structure, thereby ensuring that the functional substance is released as fully as possible and achieving better application effects;

[0024] (3) At the same time, in the present disclosure, by limiting the processing temperature of the sustained-release functional material, the morphology and performance of the sustained-release functional material obtained can be improved.

[0025] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic structural diagram of a sustained-release carrier structure provided in an embodiment of the present disclosure.

[0027] FIG2 is a SEM image of the non-water-soluble phase in the sustained-release carrier structure provided in Example 1 of the present disclosure. DETAILED DESCRIPTION

[0028] In a first aspect, the present disclosure provides a sustained-release functional material, comprising an insoluble substrate and a functional substance, wherein the lowest processing temperature of the insoluble substrate is lower than the highest failure temperature of the functional substance.

[0029] In the sustained-release functional material provided by the present disclosure, by limiting the matching of the processing temperature of the insoluble substrate and the failure temperature of the functional substance, the preparation of the sustained-release functional material can be ensured, and at the same time, the functional substance can be ensured not to fail, thereby having a better application effect.

[0030] It should be noted that the processing temperature of the insoluble substrate and the failure temperature of the functional substance are physical properties of the insoluble substrate and functional substance materials themselves. For different substrate and functional substance materials, their processing temperature and failure temperature are parameters determined by those skilled in the art through public research and / or experimental means after knowing the material composition. The specific methods for obtaining these values ​​are not specifically limited in this disclosure. Furthermore, both the processing temperature and failure temperature can be a temperature range or a specific value. The endpoints of this temperature range or appropriate values ​​within the temperature range can be determined as parameters such as the minimum processing temperature and the maximum failure temperature, and this disclosure does not specifically limit these parameters.

[0031] Preferably, the sustained-release functional material further comprises a water-soluble substrate, the functional substance is loaded on the water-soluble substrate, and the lowest processing temperature of the water-soluble substrate is lower than the highest failure temperature of the functional substance.

[0032] When the functional substance is loaded on a water-soluble substrate, during application, as the sustained-release functional material is immersed in water, the functional substance will slowly dissolve along with the dissolution of the water-soluble substrate, thereby achieving sustained release of the functional substance.

[0033] Preferably, the functional substance is an inorganic functional substance, and the failure temperature is the decomposition temperature of the inorganic functional substance.

[0034] Preferably, the functional substance is an organic compound functional substance, and the failure temperature is the decomposition temperature or inactivation temperature of the organic compound functional substance.

[0035] Preferably, the present disclosure lists some functional components and failure temperatures as follows:

[0036] Sodium percarbonate has the ability to remove stains and can be used as a slow-release functional material to assist washing machines. The decomposition temperature of sodium percarbonate is 120°C, so the minimum processing temperature (glass transition temperature or hot melting temperature) of insoluble and water-soluble substrates should be below 120°C. Biological enzymes: They can be used to remove special biological stains, such as milk stains and blood stains, but biological enzymes will be inactivated above 60°C. If thermal processing is used, the minimum processing temperature of insoluble and water-soluble substrates cannot exceed 60°C. Fragrances: Daily chemical fragrances are usually small molecule esters and ketones. During high-temperature processing, some components will volatilize or react, causing changes in the fragrance. Therefore, the matrix range needs to be determined based on the fragrance components.

[0037] The sustained-release functional material provided by the present disclosure is preferably prepared by thermal processing. Therefore, in order to avoid failure of the functional components, the screening of materials in the present disclosure must not only meet the requirement that the two materials form a co-continuous phase, but also ensure that the thermal processing temperature of the two is below the failure temperature of the functional components.

[0038] Preferably, the insoluble substrate is a water-insoluble polymer, and the minimum processing temperature of the insoluble substrate is the glass transition temperature of the water-insoluble polymer.

[0039] Preferably, the water-soluble substrate is a water-soluble polymer, and the processing temperature of the water-soluble substrate is the glass transition temperature of the water-soluble polymer.

[0040] Preferably, the water-soluble polymer is selected from one or more of polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyacrylamide and polyvinyl pyrrolidone.

[0041] Preferably, the water-insoluble polymer is selected from one or more of polyolefins, polyesters and ethylene-vinyl acetate copolymers.

[0042] Based on the above exemplary functional substances and the enumeration of water-soluble polymers and water-insoluble polymers, the following combinations can be exemplified by screening using the screening method provided by the present disclosure:

[0043] 30-70 parts of polyolefin elastomer, for example, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, etc., 15-60 parts of polyethylene oxide, for example, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, etc., 15-35 parts of sodium percarbonate, for example, 20 parts, 25 parts, 30 parts, etc., a twin-screw extruder or an internal mixer is used to mix the functional substance and the base material, and the processing temperature is between 90-110°C, for example, 95°C, 100°C, 105°C, etc.

[0044] 30-70 parts of polycaprolactone, for example, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, etc., 15-60 parts of polyethylene oxide, for example, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, etc., 15-35 parts of biological enzyme, for example, 20 parts, 25 parts, 30 parts, etc., a twin-screw extruder or an internal mixer is used to mix the functional substance and the matrix material, and the processing temperature is between 50 and 60°C, for example, 52°C, 55°C, 58°C, etc.

[0045] 30-70 parts of polycaprolactone, for example, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, etc., 15-60 parts of polyethylene oxide, for example, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, etc., 15-35 parts of flavors (dihydromyrcenol, cedar oil, citronellol, methyl ionone, santalinol, phytoncide, ethyl ionone, methyl dihydrolyl ketone, galaxol, lilyral, methyl hexyl cinnamaldehyde, etc.), for example, 20 parts, 25 parts, 30 parts, etc., a twin-screw extruder or an internal mixer is used to mix the functional substance and the base material, and the processing temperature is between 50 and 60°C, for example, 52°C, 55°C, 58°C, etc.

[0046] 30-70 parts of polyethylene, for example 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts, etc., 15-60 parts of polyethylene oxide, for example 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, etc., 15-35 parts of microencapsulated flavor, for example 20 parts, 25 parts, 30 parts, etc., a twin-screw extruder or an internal mixer is used to mix the functional substance and the matrix material, and the processing temperature is between 120 and 160°C, for example 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, 155°C, etc.

[0047] Preferably, the molecular weight of the water-soluble polymer is 1 to 1 million; for example, it can be 100, 300, 500, 800, 1000, 2000, 3000, 5000, 6000, 8000, 10,000, 20,000, 30,000, 50,000, 80,000, 10,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1 million, etc.

[0048] Preferably, the molecular weight of the polyvinyl alcohol is 800-5000; for example, it can be 800, 900, 1000, 1200, 1500, 1800, 2000, 2200, 2500, 2800, 3000, 3200, 3500, 3800, 4000, 4200, 4500, 4800 or 5000, etc.

[0049] Preferably, the molecular weight of the polyethylene glycol is 100-4000; for example, it can be 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500 or 4000, etc.

[0050] Preferably, the molecular weight of the polyethylene oxide is 50,000 to 1,000,000; for example, it can be 50,000, 80,000, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1,000,000, etc.

[0051] Preferably, the molecular weight of the water-insoluble polymer is 20,000 to 300,000; for example, it can be 20,000, 30,000, 50,000, 80,000, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000 or 300,000.

[0052] Preferably, the water-soluble polymer is polyethylene oxide with a molecular weight of 100,000 to 1,000,000 (for example, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1,000,000, etc.), or a polyol with a molecular weight of 800 to 5,000 (for example, 800, 900, 1000, 1200, 1500, 1800, 2000, 2200, etc.). 00, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500 or 4000, etc.) or polyethylene glycol having a molecular weight of 100 to 4000 (for example, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500 or 4000, etc.).

[0053] The water-insoluble polymer is a low-density polyethylene with a molecular weight of 30,000 to 100,000 (for example, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000 or 100,000), a homopolypropylene with a molecular weight of 80,000 to 150,000 (for example, 80,000, 90,000, 100,000, 110,000, 120,000, 130,000, 140,000 or 150,000), an ethylene-octene block copolymer with a molecular weight of 50,000 to 200,000 (for example, 50,000, 60,000, 70,000, 80,000, 90,000 or 100,000), a polycaprolactone with a molecular weight of 30,000 to 100,000 (for example, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000 or 100,000), a polyvinyl alcohol with a molecular weight of 20,000 to 100,000 (for example, 20,000, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000 or 100,000). 10,000, 90,000 or 100,000, etc.) of polybutylene terephthalate-adipate or 30,000 to 100,000 (for example, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000 or 100,000, etc.) of ethylene-vinyl acetate copolymer.

[0054] The mass ratio of the aqueous phase to the non-aqueous phase is (40-60):(40-60); for example, it can be 40:60, 41:59, 42:58, 43:57, 44:56, 45:55, 46:54, 47:53, 48:52, 49:51, 50:50, 51:49, 52:48, 53:47, 54:46, 55:45, 56:44, 57:43, 58:42, 59:41 or 60:40, etc.

[0055] In the present disclosure, the structure and sustained-release behavior of the sustained-release functional material can be controlled by adjusting the type, molecular weight and ratio of the water-soluble polymer and the water-insoluble polymer. The sustained-release behavior of the sustained-release functional material is related to its continuity. When the continuity reaches 100%, it means that the water-soluble phase region in the co-continuous structure can be completely dissolved, that is, it means that all functional substances can be dissolved. The co-continuous structure with a continuity of 100% is usually formed at a certain blending ratio, and the specific blending ratio mainly depends on factors such as processing conditions and rheological properties of the blending components. Therefore, for different insoluble substrates and water-soluble polymers, the blending ratio range for forming a co-continuous structure with 100% continuity is different. The present disclosure, by controlling these factors within the above range, helps to form a co-continuous structure with the water-soluble phase and the water-insoluble phase, thereby ensuring that the obtained sustained-release functional material has a suitable sustained-release rate.

[0056] Preferably, the preparation method of the sustained-release functional material comprises: loading the functional substance on the water-soluble substrate, and then blending the water-soluble substrate with the insoluble substrate at a processing temperature to obtain the sustained-release functional material, wherein: the lowest processing temperature of the water-soluble substrate and the insoluble substrate is ≤ the processing temperature ≤ the highest failure temperature of the functional substance, and preferably the processing temperature is an intermediate temperature between the lowest processing temperature and the highest failure temperature.

[0057] Processing at the appropriate processing temperature specified in the present disclosure can, on the one hand, enable the water-soluble substrate and the insoluble substrate to form a better co-continuous phase structure, thereby ensuring that the functional substances loaded on the water-soluble substrate can be dissolved evenly and slowly during application, so as to facilitate better application. On the other hand, a better processing temperature can enable the final sustained-release functional material to have a better morphology and better performance.

[0058] In the present disclosure, the intermediate temperature refers to: [(minimum processing temperature+maximum failure temperature) / 2]±5°C.

[0059] In the present disclosure, there is no particular limitation on the preparation method of the sustained-release functional material. As an exemplary preparation method, it may include the following steps:

[0060] The functional substance is first blended with the water-soluble base material to obtain a water-soluble phase material;

[0061] The water-soluble phase material and the insoluble base material are subjected to a second blending to obtain the sustained-release functional material.

[0062] The first blending and the second blending can be performed using a twin-screw extruder or an internal mixer; the processing temperature can be selected according to the types of the functional substance, the water-soluble substrate and the insoluble substrate.

[0063] When a twin-screw extruder is used, the processing temperature of the second blending can be 50-170°C (for example, 60°C, 70°C, 80°C, 90°C, 100°C, 120°C, 130°C, 140°C, 150, 160°C or 170°C, etc.), the screw speed of the second blending can be 50-150rpm (for example, 50rpm, 60rpm, 70rpm, 80rpm, 90rpm, 100rpm, 110rpm, 120rpm, 130rpm, 140rpm or 150rpm, etc.), and the residence time can be 2-5min (for example, 2min, 2.5min, 3min, 3.5min, 4min, 4.5min or 5min, etc.).

[0064] When an internal mixer is used, the mixing processing temperature of the second blending can be 50-180°C (for example, 60°C, 70°C, 80°C, 90°C, 100°C, 120°C, 130°C, 140°C, 150, 160°C, 170°C or 180°C, etc.), the rotation speed can be 50-100rpm (for example, 50rpm, 60rpm, 70rpm, 80rpm, 90rpm or 100rpm, etc.), and the mixing time can be 5-10min (for example, 5min, 5.5min, 6min, 6.5min, 7min, 7.5min, 8min, 8.5min, 9min, 9.5min or 10min, etc.).

[0065] In the present disclosure, the blending method has a certain influence on the size and structure of the water-soluble phase and the non-water-soluble phase. By controlling the blending process conditions within the above range, it is helpful to form a co-continuous structure with suitable phase domain size for the water-soluble phase and the non-water-soluble phase.

[0066] Preferably, the water-soluble substrate and the functional substance loaded on the water-soluble substrate form a water-soluble phase in the sustained-release carrier structure, and the water-soluble phase is a continuous phase.

[0067] Preferably, the insoluble matrix forms a non-water-soluble phase in the sustained-release carrier structure, and the non-water-soluble phase is a continuous phase.

[0068] In the present disclosure, the term "continuous phase" refers to the aqueous phase or the non-aqueous phase in the sustained-release carrier structure as a continuous entity, forming a continuous network structure within the sustained-release carrier structure. When both the aqueous phase and the non-aqueous phase are continuous phases, a co-continuous structure is formed. This ensures that the aqueous phase can be completely dissolved with water, while also providing support to prevent collapse of the sustained-release carrier structure during dissolution of the aqueous phase.

[0069] Preferably, the short side size of the phase region of the water-soluble phase is 100 nm to 10 μm, for example, it can be 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1 μm, 1.2μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.8μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm, etc.; the short side size of the phase region of the non-aqueous phase is 100nm~10μm, for example, it can be 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1μm, 1.2μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.8μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm, etc.

[0070] It should be noted that the short-side dimension of a phase region as used herein refers to the smallest dimension of the phase region in a direction passing through the center of the cross-sectional shape, across various cross-sectional shapes. For example, if a phase region is cylindrical, the short-side dimension of the phase region at that location is the diameter of the cylinder; if a phase region is flaky, the short-side dimension of the phase region at that location is the thickness of the flaky.

[0071] Preferably, the functional substance is selected from any one or a combination of at least two of aromatherapy materials, detergents, scale inhibitors, bactericides, bacteriostatic agents, water treatment materials, clothing treatment agents, color fixing agents, biofilm removers or dyes.

[0072] In a second aspect, the present disclosure provides a use of the sustained-release functional material as described in the first aspect in a washing device.

[0073] Preferably, the slow-release functional material is used in an aromatherapy module, a washing module, a scale inhibition module, a sterilization module, a bacteriostasis module, a water treatment module, a clothing treatment module, a color fixing module or a dyeing module of a washing device.

[0074] The sustained-release functional material is further described below through specific implementation methods.

[0075] Example 1

[0076] This embodiment provides a sustained-release dyeing material, a structural schematic diagram of which is shown in Figure 1, comprising a blended insoluble substrate, a water-soluble substrate, and a functional substance loaded on the water-soluble substrate, wherein the water-soluble substrate is a water-soluble polymer material, the insoluble substrate is a water-insoluble polymer material, and the functional substance is a dyeing material.

[0077] Among them, the water-soluble substrate and the functional substance loaded on the water-soluble substrate form a water-soluble phase in the sustained-release carrier structure (the white area in Figure 1), and the insoluble substrate forms a non-water-soluble phase (the black area in Figure 1). Both the water-soluble phase and the non-water-soluble phase are continuous phases;

[0078] The mass ratio of the water-soluble phase to the non-water-soluble phase is 55:45, and the mass ratio of the water-soluble polymer material to the dyeing material is 2:1;

[0079] The water-soluble polymer material is polyethylene oxide (the minimum processing temperature is 60-80°C, from Germany's Good Chemical Company, and the number average molecular weight is 300,000), the dyeing component is an active anion dye (the maximum failure temperature is 300-320°C), and the non-water-soluble polymer material is low-density polyethylene (the minimum processing temperature is 130-150°C, from Maoming Petrochemical Company's low-density polyethylene 2426H, and the number average molecular weight is 90,000).

[0080] The preparation method of the slow-release dyeing material in this embodiment is as follows:

[0081] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0082] (2) Using a twin-screw extruder, polyethylene oxide and cedar oil are first blended. The operating temperature of the twin-screw extruder is: zone 1 temperature is 80°C, zone 2 temperature is 120°C, zone 3 temperature is 140°C, zone 4 temperature is 140°C, zone 5 temperature is 140°C, zone 6 temperature is 140°C, and the die temperature is 120°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0083] The mixture obtained by the first blending is air-cooled to below 50° C., and then granulated to obtain a water-soluble masterbatch with a particle size of 2-5 mm;

[0084] (3) Using a twin-screw extruder, the water-soluble masterbatch obtained in step (2) is subjected to a second blending with low-density polyethylene. The operating temperature of the twin-screw extruder is as follows: the temperature of zone 1 is 150°C, the temperature of zone 2 is 160°C, the temperature of zone 3 is 170°C, the temperature of zone 4 is 170°C, the temperature of zone 5 is 170°C, the temperature of zone 6 is 170°C, and the die temperature is 160°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0085] The mixture obtained by the second blending is air-cooled to below 50° C. and then granulated to obtain a slow-release dyeing material.

[0086] Example 2

[0087] This embodiment provides a slow-release dyeing material.

[0088] The difference from Example 1 is that, in this example, the preparation method is as follows:

[0089] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0090] (2) Using a twin-screw extruder, polyethylene oxide and cedar oil are first blended. The operating temperature of the twin-screw extruder is: zone 1 temperature is 60°C, zone 2 temperature is 100°C, zone 3 temperature is 120°C, zone 4 temperature is 120°C, zone 5 temperature is 120°C, zone 6 temperature is 120°C, and the die temperature is 100°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0091] The mixture obtained by the first blending is air-cooled to below 50° C., and then granulated to obtain a water-soluble masterbatch with a particle size of 2-5 mm;

[0092] (3) Using a twin-screw extruder, the water-soluble masterbatch obtained in step (2) is subjected to a second blending with low-density polyethylene. The operating temperature of the twin-screw extruder is as follows: the temperature of zone 1 is 130°C, the temperature of zone 2 is 150°C, the temperature of zone 3 is 150°C, the temperature of zone 4 is 150°C, the temperature of zone 5 is 150°C, the temperature of zone 6 is 150°C, and the die temperature is 140°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0093] The mixture obtained by the second blending is air-cooled to below 50° C. and then granulated to obtain a slow-release dyeing material.

[0094] Example 3

[0095] This embodiment provides a sustained-release detergent material, comprising a blended insoluble substrate, a water-soluble substrate, and a functional substance loaded on the water-soluble substrate, wherein the water-soluble substrate is a water-soluble polymer material, the insoluble substrate is a water-insoluble polymer material, and the functional substance is a detergent material.

[0096] The water-soluble substrate and the functional substance loaded on the water-soluble substrate form a water-soluble phase in the sustained-release carrier structure, the insoluble substrate forms a non-water-soluble phase, and both the water-soluble phase and the non-water-soluble phase are continuous phases.

[0097] The mass ratio of the water-soluble phase to the non-water-soluble phase is 55:45, and the mass ratio of the water-soluble polymer material to the dyeing material is 1:1;

[0098] The water-soluble polymer material is polyethylene oxide (the minimum processing temperature is 60-80°C, German Good Chemical Company, and the number average molecular weight is 100,000), the washing material is composed of AEO and FMEE in a mass ratio of 1:1 (the maximum failure temperature is 160-180°C), and the non-water-soluble polymer material is ethylene-octene block copolymer (the minimum processing temperature is 70-90°C, ExxonMobil's POE6102, and the melt flow index is 1.5g / 10min).

[0099] The preparation method of the slow-release detergent material in this embodiment is as follows:

[0100] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0101] (2) Using a twin-screw extruder, polyethylene oxide and the washing material are first blended. The operating temperature of the twin-screw extruder is as follows: the temperature of zone 1 is 80°C, the temperature of zone 2 is 100°C, the temperature of zone 3 is 100°C, the temperature of zone 4 is 100°C, the temperature of zone 5 is 100°C, the temperature of zone 6 is 100°C, and the die temperature is 90°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0102] The mixture obtained by the first blending is air-cooled to below 50° C., and then granulated to obtain a water-soluble masterbatch with a particle size of 2-5 mm;

[0103] (3) using a twin-screw extruder, the water-soluble masterbatch obtained in step (2) is subjected to a second blending with the ethylene-octene block copolymer, the operating temperature of the twin-screw extruder is: the temperature of zone 1 is 80° C., the temperature of zone 2 is 110° C., the temperature of zone 3 is 110° C., the temperature of zone 4 is 110° C., the temperature of zone 5 is 110° C., the temperature of zone 6 is 110° C., and the die temperature is 100° C.; the screw speed is 50 rpm, and the material residence time is 3 min;

[0104] The mixture obtained by the second blending was air-cooled to below 50° C. and then granulated to obtain a solid washing material.

[0105] Example 4

[0106] This embodiment provides a slow-release detergent material. The difference from Example 3 is that in this embodiment, the preparation method is:

[0107] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0108] (2) Using a twin-screw extruder, polyethylene oxide and the washing material are first blended. The operating temperature of the twin-screw extruder is: zone 1 temperature is 100°C, zone 2 temperature is 120°C, zone 3 temperature is 120°C, zone 4 temperature is 120°C, zone 5 temperature is 120°C, zone 6 temperature is 120°C, and the die temperature is 110°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0109] The mixture obtained by the first blending is air-cooled to below 50° C., and then granulated to obtain a water-soluble masterbatch with a particle size of 2-5 mm;

[0110] (3) using a twin-screw extruder, the water-soluble masterbatch obtained in step (2) is subjected to a second blending with the ethylene-octene block copolymer, the operating temperature of the twin-screw extruder is: the temperature of zone 1 is 100° C., the temperature of zone 2 is 130° C., the temperature of zone 3 is 130° C., the temperature of zone 4 is 130° C., the temperature of zone 5 is 130° C., the temperature of zone 6 is 130° C., and the die temperature is 120° C.; the screw speed is 50 rpm, and the material residence time is 3 min;

[0111] The mixture obtained by the second blending was air-cooled to below 50° C. and then granulated to obtain a solid washing material.

[0112] Example 5

[0113] This embodiment provides a sustained-release detergent material, comprising a blended insoluble substrate, a water-soluble substrate, and a functional substance loaded on the water-soluble substrate, wherein the water-soluble substrate is a water-soluble polymer material, the insoluble substrate is a water-insoluble polymer material, and the functional substance is a detergent material.

[0114] The water-soluble substrate and the functional substance loaded on the water-soluble substrate form a water-soluble phase in the sustained-release carrier structure, the insoluble substrate forms a non-water-soluble phase, and both the water-soluble phase and the non-water-soluble phase are continuous phases.

[0115] The mass ratio of the water-soluble phase to the non-water-soluble phase is 40:60, and the mass ratio of the water-soluble polymer material to the washing material is 80:20;

[0116] The water-soluble polymer material is polyvinyl alcohol (the minimum processing temperature is 60-80°C, PVA-1799 from Anhui Wanwei Company, and the number average molecular weight is 1700), the washing material is composed of fatty alcohol polyoxyethylene ether (AEO), fatty acid methyl ester ethoxylate (FMEE) and sodium percarbonate in a mass ratio of 2:2:1 (the maximum failure temperature is 160-180°C), and the non-water-soluble polymer material is polycaprolactone (the minimum processing temperature is 55-75°C, PCL6800 from Solvay Company of the United States, and the number average molecular weight is 80,000).

[0117] The preparation method of the slow-release detergent material in this embodiment is as follows:

[0118] (1) drying the polyvinyl alcohol at a temperature of 50° C. for 6 h;

[0119] (2) Using a twin-screw extruder, polyvinyl alcohol and the washing material are first blended. The operating temperature of the twin-screw extruder is: the temperature of zone 1 is 60°C, the temperature of zone 2 is 80°C, the temperature of zone 3 is 80°C, the temperature of zone 4 is 80°C, the temperature of zone 5 is 80°C, the temperature of zone 6 is 80°C, and the die temperature is 75°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0120] The mixture obtained by the first blending is air-cooled to below 50° C., and then granulated to obtain a water-soluble masterbatch with a particle size of 2-5 mm;

[0121] (3) Using a twin-screw extruder, the water-soluble masterbatch obtained in step (2) is subjected to a second blending with polycaprolactone. The operating temperature of the twin-screw extruder is as follows: the temperature of zone 1 is 60°C, the temperature of zone 2 is 80°C, the temperature of zone 3 is 80°C, the temperature of zone 4 is 80°C, the temperature of zone 5 is 85°C, the temperature of zone 6 is 85°C, and the die temperature is 75°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0122] The mixture obtained by the second blending was air-cooled to below 50° C. and then granulated to obtain a solid washing material.

[0123] Example 6

[0124] This embodiment provides a slow-release aromatherapy material, comprising a blended insoluble substrate, a water-soluble substrate, and a functional substance loaded on the water-soluble substrate. The water-soluble substrate is a water-soluble polymer material, the insoluble substrate is a water-insoluble polymer material, and the functional substance is an aromatherapy material.

[0125] The water-soluble substrate and the functional substance loaded on the water-soluble substrate form a water-soluble phase in the sustained-release carrier structure, the insoluble substrate forms a non-water-soluble phase, and both the water-soluble phase and the non-water-soluble phase are continuous phases.

[0126] The mass ratio of the water-soluble phase to the non-water-soluble phase is 50:50, and the mass ratio of the water-soluble polymer material to the aromatherapy material is 80:20;

[0127] The water-soluble polymer material is polyethylene oxide (the minimum processing temperature is 60-80°C, from Germany's Good Chemical Company, with a number average molecular weight of 300,000), the aromatherapy material is microcapsule essence (the "lemon" fragrance of Hefei Ruixue New Materials Technology Co., Ltd., with a maximum failure temperature of 210-230°C), and the non-water-soluble polymer material is low-density polyethylene (the minimum processing temperature is 130-150°C, from Maoming Petrochemical Company's low-density polyethylene 2426H, with a number average molecular weight of 90,000).

[0128] The preparation method of the slow-release aromatherapy material in this embodiment is as follows:

[0129] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0130] (2) Using a twin-screw extruder, polyethylene oxide and microcapsule essence are first blended. The operating temperature of the twin-screw extruder is: the temperature of zone 1 is 80°C, the temperature of zone 2 is 120°C, the temperature of zone 3 is 140°C, the temperature of zone 4 is 140°C, the temperature of zone 5 is 140°C, the temperature of zone 6 is 140°C, and the die temperature is 120°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0131] The mixture obtained by the first blending is air-cooled to below 50° C., and then granulated to obtain a water-soluble masterbatch with a particle size of 2-5 mm;

[0132] (3) Using a twin-screw extruder, the water-soluble masterbatch obtained in step (2) is subjected to a second blending with low-density polyethylene. The operating temperature of the twin-screw extruder is as follows: the temperature of zone 1 is 80°C, the temperature of zone 2 is 140°C, the temperature of zone 3 is 170°C, the temperature of zone 4 is 170°C, the temperature of zone 5 is 170°C, the temperature of zone 6 is 170°C, and the die temperature is 160°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0133] The mixture obtained by the second blending is air-cooled to below 50° C., and then granulated to obtain a solid aromatherapy material.

[0134] Example 7

[0135] This embodiment provides a slow-release aromatherapy material. The difference from Example 6 is that in this embodiment, the preparation method is:

[0136] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0137] (2) Using a twin-screw extruder, polyethylene oxide and microcapsule essence are first blended. The operating temperature of the twin-screw extruder is: the temperature of zone 1 is 50°C, the temperature of zone 2 is 90°C, the temperature of zone 3 is 110°C, the temperature of zone 4 is 110°C, the temperature of zone 5 is 110°C, the temperature of zone 6 is 110°C, and the die temperature is 90°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0138] The mixture obtained by the first blending is air-cooled to below 50° C., and then granulated to obtain a water-soluble masterbatch with a particle size of 2-5 mm;

[0139] (3) Using a twin-screw extruder, the water-soluble masterbatch obtained in step (2) is subjected to a second blending with low-density polyethylene. The operating temperature of the twin-screw extruder is as follows: the temperature of zone 1 is 50°C, the temperature of zone 2 is 110°C, the temperature of zone 3 is 140°C, the temperature of zone 4 is 140°C, the temperature of zone 5 is 140°C, the temperature of zone 6 is 140°C, and the die temperature is 130°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0140] The mixture obtained by the second blending is air-cooled to below 50° C., and then granulated to obtain a solid aromatherapy material.

[0141] Example 8

[0142] This embodiment provides a slow-release aromatherapy material, which differs from embodiment 6 in that:

[0143] The mass ratio of the water-soluble phase to the non-water-soluble phase is 60:40, and the mass ratio of the water-soluble polymer material to the aromatherapy material is 70:30;

[0144] The water-soluble polymer material is polyvinyl alcohol (the minimum processing temperature is 60-80°C, PVA-1799 from Anhui Wanwei Company, and the number average molecular weight is 1700), and the non-water-soluble polymer material is low-density polyethylene (the minimum processing temperature is 130-150°C, low-density polyethylene 2426H from Maoming Petrochemical Company, and the number average molecular weight is 90,000).

[0145] Comparative Example 1

[0146] This comparative example provides a slow-release dyeing material.

[0147] The only difference from Example 1 is that the mass ratio of the water-soluble phase to the non-water-soluble phase is 20:80.

[0148] Comparative Example 2

[0149] This comparative example provides a slow-release aromatherapy material.

[0150] The only difference from Example 3 is that the mass ratio of the water-soluble phase to the water-insoluble phase is 80:20.

[0151] Performance testing:

[0152] The performance of the sustained-release carrier structures provided in the above examples and comparative examples was tested respectively, and the testing methods were as follows:

[0153] Tensile strength and elongation at break: The tensile properties were tested using a universal tensile testing machine. The test standard was GB / T 1040-2006, and the tensile rate was 50 mm / min.

[0154] The dissolution rate test method is as follows: prepare the solid aromatherapy material into a sample of 10mm×10mm×4mm with a mass of m1, rinse it with tap water at a flow rate of 2.5L / min at room temperature, take out the sample after the mass is constant, dry it, and weigh it. The mass is m2, and the volume of the water used for rinsing is v. The dissolution rate = (m1-m2) / v;

[0155] The criterion for determining constant sample mass is: the mass difference before and after rinsing for 1 hour is less than 0.01 g;

[0156] All samples must be dried in a 60°C forced air drying oven before weighing, and the drying standard is that the mass difference before and after drying for 1 hour is less than 0.01g.

[0157] Water-soluble phase continuity: Prepare the solid aromatherapy material into a 10mm×10mm×4mm sample and weigh the mass m1; soak the sample in 30℃ water until the mass does not change, take it out and dry it, and weigh the mass m2; Water-soluble phase continuity = the mass of the water-soluble phase dissolved in the sample / the theoretical mass of the water-soluble phase, the mass of the dissolved water-soluble phase = m1-m2.

[0158] Morphology characterization: Scanning electron microscopy (SEM) was used to observe the morphology of the sustained-release carrier material after immersion.

[0159] The results of the above tests are shown in Table 1 below:

[0160] Table 1

[0161] As can be seen from the test results in Table 1, the continuity of the water-soluble phase in the sustained-release functional material provided by the present disclosure is above 95%, the dissolution rate in water is 0.0001 g / L to 0.003 g / L, the tensile strength is 5 MPa to 20 MPa, and the elongation at break is 5% to 600%. It has excellent mechanical properties and is convenient for storage, transportation, and use.

[0162] The surface morphology of the sustained-release carrier material provided in Example 1 after immersion (non-aqueous phase) is shown in Figure 2. As can be seen from Figure 2, the non-aqueous phase is continuous, and the short side dimensions of the phase regions between the non-aqueous phase and the aqueous phase (the gaps in the figure) are in the range of 100 nm to 10 μm.

[0163] Comparisons of Example 2 with Example 1, Example 4 with Example 3, and Example 7 with Example 6 show that an appropriate processing temperature can improve the performance of the resulting sustained-release functional material. Compared with Example 1, Comparative Example 1 has a relatively low proportion of the water-soluble phase, resulting in a low degree of continuity of the water-soluble phase of the resulting sustained-release carrier material, which cannot form a co-continuous structure, making it difficult to completely release the water-soluble phase and slowing the release rate. Comparative Example 2 has a relatively low proportion of the non-water-soluble phase, resulting in an excessively high dissolution rate of the resulting sustained-release carrier material and easy disintegration of the material.

[0164] In a third aspect, the present disclosure further provides a sustained-release carrier material; the sustained-release carrier material comprises a blended water-soluble phase and a non-water-soluble phase;

[0165] The water-soluble phase is a water-soluble material;

[0166] Wherein, the dissolution rate of the water-soluble material in water is 0.0001 g / L to 0.003 g / L.

[0167] In the present disclosure, the test method for the dissolution rate is: prepare the sustained-release carrier material into a sample of 10mm×10mm×4mm with a mass of m1, and rinse it with tap water at a flow rate of 2.5L / min. After the mass of the sample is constant, take it out and dry it, weigh it, and the mass is m2. The volume of water used for rinsing is v, and the dissolution rate = (m1-m2) / v.

[0168] The sustained-release carrier material provided by the present disclosure includes a blended water-soluble phase and a non-water-soluble phase, wherein the water-soluble phase can be continuously and slowly dissolved in an aqueous environment, so it can be used to load water-soluble functional materials (such as aromatherapy materials, detergents, dyes, etc.), and simply and efficiently achieve the sustained release of the loaded material in an aqueous environment. The phase structure and sustained-release rate of the sustained-release carrier material are controllable and can be adjusted by adjusting the type, molecular weight, and ratio of the material. By adjusting the dissolution rate of the water-soluble material in water, the obtained sustained-release carrier material can be well adapted to a variety of application scenarios (such as washing machines, dishwashers, and other equipment), and has a good sustained-release effect under the water flow rate of various scenarios, thereby achieving the desired target life in these application scenarios.

[0169] The sustained-release functional material prepared using this sustained-release carrier material can be used in washing equipment, slowly releasing the functional components when water is added, achieving sustained release of the functional components simply and efficiently. This sustained-release carrier material, with its specific dissolution rate, is well adapted to the water volume conditions of conventional washing equipment during a single wash cycle, releasing the functional material at an effective concentration and achieving a good expected target lifespan. Users can obtain the beneficial technical effects of the functional material during the expected target lifespan without the need for frequent replacement, thus improving the user experience.

[0170] The sustained-release carrier material provided by the present disclosure is formed by blending a water-soluble phase material with a non-water-soluble phase material. When the sustained-release carrier material is in an aqueous environment, the surface water-soluble phase material dissolves with water, while a porous structure is formed on the non-water-soluble matrix. Water further penetrates into the matrix along the pores, causing the water-soluble phase material in the inner layer of the matrix to dissolve with water. Therefore, it can be used to load water-soluble functional materials (such as aromatherapy materials, detergents, dyes, etc.), and achieve the sustained release of the loaded materials in an aqueous environment simply and efficiently.

[0171] The slow-release carrier material provided by the present disclosure has a controllable phase structure and slow-release rate, which can be adjusted by adjusting the type, molecular weight, and ratio of the material. By adjusting the dissolution rate of the water-soluble material in water, the obtained slow-release carrier material can be well adapted to a variety of application scenarios (such as washing machines, dishwashers, and other equipment), and has a good slow-release effect under the water flow rate of various scenarios, thereby achieving the desired target life in these application scenarios. In some embodiments of the present disclosure, the water-soluble phase and the non-aqueous phase are both continuous phases.

[0172] In the present disclosure, the term "continuous phase" refers to the aqueous phase or the non-aqueous phase in the sustained-release carrier material as a continuous entity, forming a continuous network structure within the sustained-release carrier material. When both the aqueous phase and the non-aqueous phase are continuous phases, a co-continuous structure is formed. This ensures that the aqueous phase can be completely dissolved with water, while also providing support to prevent collapse of the sustained-release carrier material during dissolution of the aqueous phase.

[0173] Preferably, the short side size of the phase region of the water-soluble phase is 100 nm to 10 μm, for example, it can be 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1 μm, 1.2μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.8μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm, etc.; the short side size of the phase region of the non-aqueous phase is 100nm~10μm, for example, it can be 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1μm, 1.2μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.8μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm, etc.

[0174] It should be noted that the short-side dimension of a phase region as used herein refers to the smallest dimension of the phase region in a direction passing through the center of the cross-sectional shape, across various cross-sectional shapes. For example, if a phase region is cylindrical, the short-side dimension of the phase region at that location is the diameter of the cylinder; if a phase region is flaky, the short-side dimension of the phase region at that location is the thickness of the flaky.

[0175] Preferably, the mass ratio of the aqueous phase to the non-aqueous phase is (30-70):(30-70); for example, it can be 30:70, 32:68, 35:65, 38:62, 40:60, 42:58, 45:55, 48:52, 50:50, 52:48, 55:45, 58:42, 60:40, 62:38, 65:35, 68:32 or 70:30, etc. Preferably, it is (40-60):(40-60).

[0176] Preferably, the water-soluble material is selected from one or more of polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyacrylamide and polyvinyl pyrrolidone.

[0177] Preferably, the molecular weight of the water-soluble material is 1 to 1 million; for example, it can be 100, 300, 500, 800, 1000, 2000, 3000, 5000, 6000, 8000, 10,000, 20,000, 30,000, 50,000, 80,000, 10,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1 million, etc.

[0178] Preferably, the molecular weight of the polyvinyl alcohol is 800-5000; for example, it can be 800, 900, 1000, 1200, 1500, 1800, 2000, 2200, 2500, 2800, 3000, 3200, 3500, 3800, 4000, 4200, 4500, 4800 or 5000, etc.

[0179] Preferably, the molecular weight of the polyethylene glycol is 100-4000; for example, it can be 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500 or 4000, etc.

[0180] Preferably, the molecular weight of the polyethylene oxide is 50,000 to 1,000,000; for example, it can be 50,000, 80,000, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1,000,000, etc.

[0181] Preferably, the non-water-soluble phase is a water-insoluble material.

[0182] Preferably, the water-insoluble material is selected from one or more of polyolefins, polyesters and ethylene-vinyl acetate copolymers.

[0183] Preferably, the molecular weight of the water-insoluble material is 20,000 to 300,000; for example, 20,000, 30,000, 50,000, 80,000, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000 or 300,000, etc.

[0184] Preferably, the water-soluble material is polyethylene oxide with a molecular weight of 100,000 to 1,000,000 (for example, 100,000, 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1,000,000, etc.), or polyethylene oxide with a molecular weight of 800 to 5,000 (for example, 800, 900, 1000, 1200, 1500, 1800, 2000, 2200, etc.). 00, 250, 2800, 3000, 3200, 3500, 3800, 4000, 4200, 4500, 4800 or 5000, or a polyethylene glycol having a molecular weight of 100 to 4000 (e.g., 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1500, 2000, 2500, 3000, 3500 or 4000, or a polyethylene glycol having a molecular weight of 100 to 4000;

[0185] The non-water-soluble material is a low-density polyethylene with a molecular weight of 30,000 to 100,000 (for example, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000 or 100,000, etc.), a homopolymer polypropylene with a molecular weight of 80,000 to 150,000 (for example, 80,000, 90,000, 100,000, 110,000, 120,000, 130,000, 140,000 or 150,000, etc.), a homopolymer polypropylene with a molecular weight of 50,000 to 200,000 (for example, 50,000, 60,000, 70,000, 80,000, 90,000, 100,000, 110,000, 120,000, 130,000, 140,000, 150,000, 160,000, 170,000, 180,000, etc.) 190,000 or 200,000, etc.) ethylene-octene block copolymer, 30,000-100,000 (for example, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000 or 100,000, etc.) polycaprolactone, 20,000-100,000 (for example, 20,000, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000 or 100,000, etc.) polybutylene terephthalate-adipate, or 30,000-100,000 (for example, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000 or 100,000, etc.) ethylene-vinyl acetate copolymer;

[0186] The mass ratio of the aqueous phase to the non-aqueous phase is (40-60):(40-60); for example, it can be 40:60, 41:59, 42:58, 43:57, 44:56, 45:55, 46:54, 47:53, 48:52, 49:51, 50:50, 51:49, 52:48, 53:47, 54:46, 55:45, 56:44, 57:43, 58:42, 59:41 or 60:40, etc.

[0187] In the present disclosure, the structure and sustained-release behavior of the sustained-release carrier material can be controlled by adjusting the type, molecular weight and ratio of the water-soluble material and the water-insoluble material. The sustained-release behavior of the sustained-release carrier material is related to its continuity. When the continuity reaches 100%, it means that the water-soluble phase region in the co-continuous structure can be completely dissolved. The co-continuous structure with a continuity of 100% is usually formed at a certain specific blending ratio, and the specific blending ratio mainly depends on factors such as processing conditions and rheological properties of the blending components. Therefore, for different water-insoluble matrices and water-soluble materials, the blending ratio range for forming a co-continuous structure with 100% continuity is different. The present disclosure, by controlling these factors within the above-mentioned range, helps to form a co-continuous structure with the water-soluble phase and the water-insoluble phase, thereby ensuring that the obtained sustained-release carrier material has a suitable sustained-release rate.

[0188] In a fourth aspect, the present disclosure also provides a sustained-release carrier material and application thereof.

[0189] The sustained-release carrier material includes a blended water-soluble phase and a non-water-soluble phase. The tensile strength of the sustained-release carrier material is 5 MPa-50 MPa, for example, 10 MPa, 15 MPa, 20 MPa, 25 MPa, 30 MPa, 35 MPa, 40 MPa, 45 MPa, etc., and the elongation at break is 8%-800%, for example, 8%, 10%, 20%, 50%, 100%, 150%, 200%, 300%, 500%, 600%, 800%, etc.

[0190] Preferably, after the sustained-release carrier material completes sustained release in water, more than 95% of the mass of the water-soluble phase is dissolved in water, that is, the continuity of the water-soluble phase is more than 95%.

[0191] Preferably, after the sustained-release carrier material completes sustained release in water, less than 5% of the mass of the non-aqueous phase is dispersed in water, that is, the non-aqueous phase is also a continuous phase, that is, the aqueous phase and the non-aqueous phase form a co-continuous structure.

[0192] The present invention forms a sustained-release carrier by blending a water-soluble phase material with a non-water-soluble phase material. When the sustained-release carrier is in an aqueous environment, the surface water-soluble phase material dissolves with water. As the water-soluble phase material dissolves, a porous structure is formed on the non-water-soluble matrix, which can further allow water to flow into the matrix along the pores, thereby allowing the water-soluble phase material in the inner layer of the matrix to dissolve with water. Therefore, it can be used to load water-soluble functional materials (such as aromatherapy materials, detergents, scale inhibitors, bactericides, dyes, etc.), thereby achieving a simple and efficient sustained release of water-soluble functional components in an aqueous environment.

[0193] The sustained-release carrier material provided by the present invention not only needs to meet certain sustained-release requirements, but also needs to meet certain strength and toughness requirements in order to enable the sustained-release carrier material loaded with functional components to be stored, applied, etc., to ensure that it will not be broken during assembly and use, and to ensure that the functional components and the remaining components after the water-soluble phase are dissolved are still a whole, so as not to affect the application. The sustained-release carrier material provided by the present invention has physical parameters suitable for water sustained-release environments, and can maintain the inherent form of the sustained-release carrier under the impact of water flow. Higher tensile strength means that the sustained-release functional material has a longer service life, providing users with a better user experience. The higher water-soluble phase continuity allows the effective functional substances carried by the sustained-release carrier material to be more fully released for use in a water environment, thereby improving the use effect of the sustained-release carrier material.

[0194] The water-soluble phase and the non-water-soluble phase in the sustained-release carrier material provided by the present disclosure are both continuous phase structures. The continuous phase means that the water-soluble phase or the non-water-soluble phase in the sustained-release carrier material is a continuous whole, which is a continuous network structure in the sustained-release carrier material.

[0195] When the water-soluble phase and the non-aqueous phase are both continuous phases, a co-continuous structure is formed. The co-continuous structure can ensure that more than 95% of the water-soluble phase is dissolved with water, and can ensure that the non-aqueous phase is a continuous overall structure, which can avoid the non-aqueous phase from collapsing with the dissolution of the water-soluble phase.

[0196] Preferably, the short side size of the phase region of the water-soluble phase is 100nm to 10μm, for example, it can be 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1μm, 1.2μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.8μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm etc.; the short side size of the phase region of the non-aqueous phase is 100nm~10μm, for example, it can be 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 700nm, 800nm, 900nm, 1μm, 1.2μm, 1.5μm, 1.8μm, 2μm, 2.2μm, 2.5μm, 2.8μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm, etc.

[0197] It should be noted that the short-side dimension of a phase region as used herein refers to the smallest dimension of the phase region in a direction passing through the center of the cross-sectional shape, across various cross-sectional shapes. For example, if a phase region is cylindrical, the short-side dimension of the phase region at that location is the diameter of the cylinder; if a phase region is flaky, the short-side dimension of the phase region at that location is the thickness of the flaky.

[0198] The sustained-release carrier material has a sustained-release rate in water of 0.1 to 3 mg / L, for example, 0.2 mg / L, 0.5 mg / L, 0.8 mg / L, 1.0 mg / L, 1.5 mg / L, 2.0 mg / L, 2.5 mg / L, 2.8 mg / L, etc.

[0199] In the present disclosure, the test method for the dissolution rate is: prepare the sustained-release carrier material into a sample of 10mm×10mm×4mm with a mass of m1, and rinse it with tap water at a flow rate of 2.5L / min. After the mass of the sample is constant, take it out and dry it, weigh it, and the mass is m2. The volume of water used for rinsing is v, and the dissolution rate = (m1-m2) / v.

[0200] The sustained-release carrier material provided by the present disclosure can meet certain application requirements when the sustained-release rate is within the defined range of the present disclosure.

[0201] Preferably, the water-soluble phase is selected from water-soluble materials, and the processing temperature of the water-soluble materials is 50-200°C, such as 70°C, 80°C, 100°C, 120°C, 150°C, 180°C, etc.

[0202] Preferably, the water-soluble phase includes water-insoluble materials, and the processing temperature of the water-insoluble phase is 50-300°C, such as 70°C, 80°C, 100°C, 120°C, 150°C, 180°C, 200°C, 220°C, 250°C, 280°C, etc.

[0203] The processing temperature refers to the processable temperature of the material. If a twin-screw extruder is used for processing, this refers to the material's glass transition temperature or melting point, which allows processing. This description is not provided in detail in this disclosure. To obtain the sustained-release carrier material provided herein, the present disclosure requires that the processing temperatures of the aqueous phase and the non-aqueous phase be matched.

[0204] Preferably, the water-soluble material is selected from one or more of polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyacrylamide and polyvinyl pyrrolidone.

[0205] Preferably, the non-water-soluble material is selected from one or more of polyolefins, polyesters and ethylene-vinyl acetate copolymers, and the tensile strength of the non-water-soluble material is 5MPa-100MPa, such as 10MPa, 20MPa, 40MPa, 50MPa, 80MPa, etc., and the elongation at break is 5%-800%, such as 50%, 100%, 200%, 300%, 400%, 500%, 600%, 800%, etc.

[0206] In order to ensure that the processed sustained-release carrier can be used, the non-water-soluble material needs to have a certain mechanical strength. This setting can also ensure that when the water-soluble phase is basically completely dissolved, the remaining carrier still has a whole structure with a certain strength, which is convenient for collection, transfer and other operations.

[0207] Preferably, the water-soluble material is polyethylene oxide, and the molecular weight of the polyethylene oxide is 100,000 to 1,000,000, for example, it can be 120,000, 150,000, 180,000, 200,000, 220,000, 250,000, 280,000, 300,000, 320,000, 350,000, 380,000, 400,000, 420,000, 450,000, 480,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000 or 1,000,000, etc.

[0208] Preferably, the non-water-soluble material is any one of low-density polyethylene, homopolypropylene, ethylene-octene block copolymer, polycaprolactone, polybutylene terephthalate-adipate or ethylene-vinyl acetate copolymer, and the tensile strength of the non-water-soluble material is 5MPa-50MPa, for example, 10MPa, 15MPa, 20MPa, 25MPa, 30MPa, 35MPa, 40MPa, 45MPa, etc., and the elongation at break is 50%-800%, for example, 60%, 100%, 200%, 300%, 400%, 500%, 600%, 700%, 800%, etc.

[0209] In the present disclosure, the structure and sustained-release behavior of the sustained-release carrier material can be controlled by adjusting the types and parameters of the water-soluble and water-insoluble materials. The sustained-release behavior of the sustained-release carrier material is related to its continuity. When the continuity reaches 100%, it means that the water-soluble phase region in the co-continuous structure can be completely dissolved. A co-continuous structure with 100% continuity is usually formed at a certain blending ratio, and the specific blending ratio mainly depends on factors such as processing conditions and the rheological properties of the blending components. Therefore, for different water-insoluble matrices and water-soluble materials, the blending ratio range for forming a co-continuous structure with 100% continuity is different. The present disclosure, by controlling these factors within the above range, helps to form a co-continuous structure with the water-soluble phase and the water-insoluble phase, ensuring that the obtained sustained-release carrier material has a suitable sustained-release rate. The adjusted dissolution rate of the water-soluble material in water can be well adapted to a variety of application scenarios (such as washing machines, dishwashers, etc.), and has a good sustained-release effect under the water flow rate of various scenarios, so that the required target life can be achieved in these application scenarios.

[0210] In the present disclosure, there is no particular limitation on the preparation method of the above-mentioned sustained-release carrier material. As an exemplary preparation method, it may include the following steps:

[0211] The water-soluble phase material and the water-insoluble phase material are blended to obtain the sustained-release carrier material.

[0212] The blending can be carried out using a twin-screw extruder or an internal mixer; the processing temperature can be selected according to the types of the water-soluble phase material and the non-water-soluble phase material.

[0213] When a twin-screw extruder is used, the screw speed of the second blending can be 50 rpm to 150 rpm (for example, 50 rpm, 60 rpm, 70 rpm, 80 rpm, 90 rpm, 100 rpm, 110 rpm, 120 rpm, 130 rpm, 140 rpm or 150 rpm, etc.), and the residence time can be 2 to 5 min (for example, 2 min, 2.5 min, 3 min, 3.5 min, 4 min, 4.5 min or 5 min, etc.).

[0214] When an internal mixer is used, the rotation speed can be 50 rpm to 100 rpm (for example, 50 rpm, 60 rpm, 70 rpm, 80 rpm, 90 rpm or 100 rpm, etc.), and the mixing time can be 3 to 10 min (for example, 3 min, 3.5 min, 4 min, 4.5 min, 5 min, 5.5 min, 6 min, 6.5 min, 7 min, 7.5 min, 8 min, 8.5 min, 9 min, 9.5 min or 10 min, etc.).

[0215] In the present disclosure, the blending method has a certain influence on the size and structure of the water-soluble phase and the non-water-soluble phase. By controlling the blending process conditions within the above range, it is helpful to form a co-continuous structure with suitable phase domain size for the water-soluble phase and the non-water-soluble phase.

[0216] On the other hand, the present disclosure provides use of the above-mentioned sustained-release carrier material in the sustained-release of functional materials.

[0217] The functional material may be an aromatherapy material, a detergent, a scale inhibitor, a bactericide, a bacteriostat, a water treatment material, a clothing treatment agent, a color fixing agent, a biofilm remover or a dye.

[0218] Among them, bactericides include cationic bactericides or anionic bactericides; bactericides and bacteriostatic agents include natural extracts, organic bactericides or bacteriostatic agents, or inorganic bactericides or bacteriostatic agents; water treatment materials include residual chlorine treatment materials; clothing treatment agents include softeners, enzymes, etc. In a third aspect, the present disclosure provides a use of the slow-release carrier material as described in the first aspect in a washing device.

[0219] Preferably, the slow-release carrier material is used in an aromatherapy module, a detergent module, a scale inhibition module, a sterilization module, a bacteriostasis module, a water treatment module, a clothing treatment module, a color fixing module or a dyeing module of a washing device.

[0220] The sustained-release functional material prepared using this sustained-release carrier material can be used in washing equipment, slowly releasing the functional components when water is added, achieving sustained release of the functional components simply and efficiently. This sustained-release carrier material, with its specific dissolution rate, is well adapted to the water volume conditions of conventional washing equipment during a single wash cycle, releasing the functional material at an effective concentration and achieving a good expected target lifespan. Users can obtain the beneficial technical effects of the functional material during the expected target lifespan without the need for frequent replacement, thus improving the user experience.

[0221] The sustained-release carrier material disclosed in the present disclosure is further described below through specific embodiments.

[0222] Example 1

[0223] This embodiment provides a sustained-release carrier material, comprising a blended water-soluble phase and a non-water-soluble phase;

[0224] Wherein, the water-soluble phase and the non-aqueous phase are both continuous phases, and after the sustained-release carrier material completes sustained release in water, more than 95% of the mass of the water-soluble phase is dissolved in water, and less than 5% of the mass of the non-aqueous phase is dissolved in water;

[0225] The water-soluble phase is a water-soluble material, and the water-insoluble phase is a water-insoluble material;

[0226] The mass ratio of the water-soluble phase to the non-aqueous phase is 50:50;

[0227] The water-soluble material is polyethylene oxide (Germany's Good Chemical Company, with a number average molecular weight of 100,000), and the non-water-soluble material is ethylene-vinyl acetate copolymer (UE630 from Taiwan Polymer Chemical Co., Ltd., with a tensile strength of 17 MPa, an elongation at break of 700%, and a melt flow index of 1.5 g / 10 min).

[0228] The preparation method of the sustained-release carrier material in this embodiment is as follows:

[0229] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0230] (2) Using a twin-screw extruder, the dried polyethylene oxide and ethylene-vinyl acetate copolymer are blended. The operating temperature of the twin-screw extruder is as follows: the temperature of zone 1 is 80°C, the temperature of zone 2 is 100°C, the temperature of zone 3 is 100°C, the temperature of zone 4 is 100°C, the temperature of zone 5 is 100°C, the temperature of zone 6 is 100°C, and the die temperature is 100°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0231] The blended mixture is air-cooled to below 50° C. and then granulated to obtain a sustained-release carrier material.

[0232] Example 2

[0233] This embodiment provides a sustained-release carrier material, which differs from Example 1 in that:

[0234] The mass ratio of the water-soluble phase to the non-aqueous phase is 50:50;

[0235] The water-soluble material is polyethylene oxide (from Germany's Goodchem, with a number average molecular weight of 300,000), and the non-water-soluble material is low-density polyethylene (low-density polyethylene 2426H from Maoming Petrochemical Company, with a tensile strength of 15 MPa, an elongation at break of 600%, and a number average molecular weight of 90,000).

[0236] The preparation method of the sustained-release carrier material in this embodiment is as follows:

[0237] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0238] (2) Using a twin-screw extruder, the dried polyethylene oxide and low-density polyethylene are blended. The operating temperature of the twin-screw extruder is as follows: the temperature of zone 1 is 80°C, the temperature of zone 2 is 140°C, the temperature of zone 3 is 170°C, the temperature of zone 4 is 170°C, the temperature of zone 5 is 170°C, the temperature of zone 6 is 170°C, and the die temperature is 160°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0239] The blended mixture is air-cooled to below 50° C. and then granulated to obtain a sustained-release carrier material.

[0240] Example 3

[0241] This embodiment provides a sustained-release carrier material, which differs from Example 1 in that:

[0242] The mass ratio of the water-soluble phase to the non-aqueous phase is 55:45;

[0243] The water-soluble material is polyethylene oxide (Germany's Goodchem, with a number average molecular weight of 100,000), and the water-insoluble material is polycaprolactone (PCL6800 from Solvay, USA, with a tensile strength of 33 MPa, an elongation at break of 650%, and a number average molecular weight of 80,000).

[0244] The preparation method of the sustained-release carrier material in this embodiment is as follows:

[0245] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0246] (2) Using a twin-screw extruder, the dried polyethylene oxide and polycaprolactone were blended. The operating temperature of the twin-screw extruder was as follows: the temperature of zone 1 was 60°C, the temperature of zone 2 was 80°C, the temperature of zone 3 was 80°C, the temperature of zone 4 was 80°C, the temperature of zone 5 was 85°C, the temperature of zone 6 was 85°C, and the die temperature was 75°C; the screw speed was 50 rpm, and the material residence time was 3 min;

[0247] The blended mixture is air-cooled to below 50° C. and then granulated to obtain a sustained-release carrier material.

[0248] Example 4

[0249] This embodiment provides a sustained-release carrier material, which differs from Example 1 in that:

[0250] The mass ratio of the water-soluble phase to the non-aqueous phase is 55:45;

[0251] The water-soluble material is polyethylene oxide (Germany's Rhodamine Chemical Company, with a number average molecular weight of 100,000), and the water-insoluble material is ethylene-octene block copolymer (POE6102 from ExxonMobil, with a tensile strength of 8 MPa, an elongation at break of 800%, and a melt flow index of 1.5 g / 10 min).

[0252] The preparation method of the sustained-release carrier material in this embodiment is as follows:

[0253] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0254] (2) Using a twin-screw extruder, the dried polyethylene oxide and the ethylene-octene block copolymer were blended. The operating temperature of the twin-screw extruder was as follows: the temperature of zone 1 was 80°C, the temperature of zone 2 was 110°C, the temperature of zone 3 was 110°C, the temperature of zone 4 was 110°C, the temperature of zone 5 was 110°C, the temperature of zone 6 was 110°C, and the die temperature was 100°C; the screw speed was 50 rpm, and the material residence time was 3 min;

[0255] The blended mixture is air-cooled to below 50° C. and then granulated to obtain a sustained-release carrier material.

[0256] Example 5

[0257] This embodiment provides a sustained-release carrier material, which differs from Example 1 in that:

[0258] The mass ratio of the water-soluble phase to the non-aqueous phase is 55:45;

[0259] The water-soluble material is polyethylene oxide (Germany's Good Chemical Company, with a number average molecular weight of 100,000), and the non-water-soluble material is polybutylene terephthalate-adipate (TH801T from Xinjiang Lanshan Tunhe Company, with a tensile strength of 13 MPa, an elongation at break of 400%, and a number average molecular weight of 40,000).

[0260] The preparation method of the sustained-release carrier material in this embodiment is as follows:

[0261] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0262] (2) Using a twin-screw extruder, the dried polyethylene oxide and polybutylene terephthalate-adipate were blended. The operating temperature of the twin-screw extruder was as follows: the temperature of zone 1 was 80°C, the temperature of zone 2 was 110°C, the temperature of zone 3 was 110°C, the temperature of zone 4 was 110°C, the temperature of zone 5 was 110°C, the temperature of zone 6 was 110°C, and the die temperature was 100°C; the screw speed was 50 rpm, and the material residence time was 3 min;

[0263] The blended mixture is air-cooled to below 50° C. and then granulated to obtain a sustained-release carrier material.

[0264] Example 6

[0265] This embodiment provides a sustained-release carrier material, which differs from Example 1 in that:

[0266] The mass ratio of the water-soluble phase to the non-aqueous phase is 60:40;

[0267] The water-soluble material is polyethylene oxide (polyethylene oxide from Germany's Good Chemical Company, with a number average molecular weight of 1 million), and the water-insoluble material is homopolymer polypropylene (T30S from Zhongan United Petrochemical Company, with a tensile strength of 35 MPa, an elongation at break of 20%, and a number average molecular weight of 80,000).

[0268] The preparation method of the sustained-release carrier material in this embodiment is as follows:

[0269] (1) drying the polyethylene oxide at a temperature of 50° C. for 6 h;

[0270] (2) Using a twin-screw extruder, the dried polyethylene oxide and homopolypropylene are blended. The operating temperature of the twin-screw extruder is: the temperature of zone 1 is 150°C, the temperature of zone 2 is 160°C, the temperature of zone 3 is 170°C, the temperature of zone 4 is 170°C, the temperature of zone 5 is 170°C, the temperature of zone 6 is 170°C, and the die temperature is 160°C; the screw speed is 50 rpm, and the material residence time is 3 min;

[0271] The blended mixture is air-cooled to below 50° C. and then granulated to obtain a sustained-release carrier material.

[0272] Example 7

[0273] This embodiment provides a sustained-release carrier material, which differs from Example 2 in that:

[0274] The mass ratio of the water-soluble phase to the non-aqueous phase is 60:40;

[0275] The water-soluble material is polyvinyl alcohol (PVA-1799 from Anhui Wanwei Company, with a number average molecular weight of 1700), and the non-water-soluble material is low-density polyethylene (low-density polyethylene 2426H from Maoming Petrochemical Company, with a tensile strength of 15 MPa, an elongation at break of 600%, and a number average molecular weight of 90,000).

[0276] Example 8

[0277] This embodiment provides a sustained-release carrier material, which differs from Example 2 in that:

[0278] The mass ratio of the water-soluble phase to the non-aqueous phase is 40:60;

[0279] The water-soluble material is polyethylene glycol (polyethylene glycol-200 from Wuxi Yatai Chemical Joint Company, with a number average molecular weight of 200), and the non-water-soluble material is low-density polyethylene (low-density polyethylene 2426H from Maoming Petrochemical Company, with a tensile strength of 15 MPa, an elongation at break of 600%, and a number average molecular weight of 90,000).

[0280] Comparative Example 1

[0281] This comparative example provides a sustained-release carrier material, which differs from Example 1 only in that the mass ratio of the water-soluble phase to the non-water-soluble phase is 20:80.

[0282] Comparative Example 2

[0283] This comparative example provides a sustained-release carrier material, which differs from Example 1 only in that the mass ratio of the water-soluble phase to the non-water-soluble phase is 80:20.

[0284] Performance testing:

[0285] The performance of the sustained-release carrier materials provided in the above examples and comparative examples was tested respectively, and the testing method was as follows:

[0286] Tensile strength and elongation at break: The tensile properties were tested using a universal tensile testing machine. The test standard was GB / T 1040-2006, and the tensile rate was 50 mm / min.

[0287] The dissolution rate test method is as follows: prepare the solid aromatherapy material into a sample of 10mm×10mm×4mm with a mass of m1, rinse it with tap water at a flow rate of 2.5L / min at room temperature, take out the sample after the mass is constant, dry it, and weigh it. The mass is m2, and the volume of the water used for rinsing is v. The dissolution rate = (m1-m2) / v;

[0288] The criterion for determining constant sample mass is: the mass difference before and after rinsing for 1 hour is less than 0.01 g;

[0289] All samples must be dried in a 60°C forced air drying oven before weighing, and the drying standard is that the mass difference before and after drying for 1 hour is less than 0.01g.

[0290] Water-soluble phase continuity: Prepare the solid aromatherapy material into a 10mm×10mm×4mm sample and weigh the mass m1; soak the sample in 30℃ water until the mass does not change, take it out and dry it, and weigh the mass m2; Water-soluble phase continuity = the mass of the water-soluble phase dissolved in the sample / the theoretical mass of the water-soluble phase, the mass of the dissolved water-soluble phase = m1-m2.

[0291] Morphology characterization: Scanning electron microscopy (SEM) was used to observe the morphology of the sustained-release carrier material after immersion.

[0292] The results of the above tests are shown in Table 2 below:

[0293] Table 2

[0294] From the test results in Table 2, it can be seen that the tensile strength of the sustained-release carrier material provided by the present disclosure is 5MPa-50MPa, the elongation at break is 2%-600%, the continuity of the water-soluble phase reaches more than 97%, and the dissolution rate in water is 0.0001g / L-0.003g / L.

[0295] Compared with Example 1, in Comparative Example 1, due to the low proportion of the water-soluble phase, the continuity of the water-soluble phase of the sustained-release carrier material obtained is low, and a co-continuous structure cannot be formed. The water-soluble phase is difficult to be completely released, and the release rate is slow; in Comparative Example 2, due to the low proportion of the non-water-soluble phase, the dissolution rate of the sustained-release carrier material obtained is too large, and the material is easy to disintegrate.

[0296] A1. A sustained-release carrier material, characterized in that the sustained-release carrier material comprises a blended water-soluble phase and a water-insoluble phase; the water-soluble phase is a water-soluble material; wherein the dissolution rate of the water-soluble material in water is 0.0001 g / L to 0.003 g / L.

[0297] A2. The sustained-release carrier material according to claim A1, characterized in that both the water-soluble phase and the non-water-soluble phase are continuous phases.

[0298] A3. The sustained-release carrier material according to claim A1 or A2, characterized in that the short side size of the phase region of the water-soluble phase is 100 nm to 10 μm, and the short side size of the phase region of the non-water-soluble phase is 100 nm to 10 μm.

[0299] A4. The sustained-release carrier material according to any one of claims A1 to A3, characterized in that the mass ratio of the water-soluble phase to the non-water-soluble phase is (30-70):(30-70), preferably (40-60):(40-60).

[0300] A5. The sustained-release carrier material according to any one of claims A1 to A4, wherein the water-soluble material is selected from one or more of polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyacrylamide, and polyvinyl pyrrolidone;

[0301] Preferably, the molecular weight of the water-soluble material is 1 to 1 million;

[0302] Preferably, the molecular weight of the polyvinyl alcohol is 800 to 5000;

[0303] Preferably, the molecular weight of the polyethylene glycol is 100 to 4000;

[0304] Preferably, the molecular weight of the polyethylene oxide is 50,000 to 1,000,000.

[0305] A6. The sustained-release carrier material according to any one of claims A1 to A5, characterized in that the water-insoluble material is a water-insoluble material.

[0306] A7. The sustained-release carrier material according to claim A6, wherein the water-insoluble material is selected from one or more of polyolefins, polyesters, and ethylene-vinyl acetate copolymers;

[0307] Preferably, the molecular weight of the water-insoluble material is 20,000 to 300,000.

[0308] A8. The sustained-release carrier material according to any one of claims A1 to A7, wherein the water-soluble material is polyethylene oxide with a molecular weight of 100,000 to 1,000,000, polyvinyl alcohol with a molecular weight of 800 to 5,000, or polyethylene glycol with a molecular weight of 100 to 4,000;

[0309] The non-water-soluble material is low-density polyethylene with a molecular weight of 30,000 to 100,000, homopolypropylene with a molecular weight of 80,000 to 150,000, ethylene-octene block copolymer with a molecular weight of 50,000 to 200,000, polycaprolactone with a molecular weight of 30,000 to 100,000, polybutylene terephthalate-adipate with a molecular weight of 20,000 to 100,000, or ethylene-vinyl acetate copolymer with a molecular weight of 30,000 to 100,000.

[0310] The mass ratio of the water-soluble phase to the non-water-soluble phase is (40-60):(40-60).

[0311] A9. Use of the sustained-release carrier material according to any one of claims A1 to A8 in sustained-release of functional materials;

[0312] Preferably, the functional material is an aromatherapy material, a detergent, a scale inhibitor, a bactericide, a bacteriostatic agent, a water treatment material, a clothing treatment agent, a color fixing agent, a biofilm remover or a dye.

[0313] A10. Use of the sustained-release carrier material according to any one of claims A1 to A8 in a washing device;

[0314] Preferably, the slow-release carrier material is used in an aromatherapy module, a detergent module, a scale inhibition module, a sterilization module, a bacteriostasis module, a water treatment module, a clothing treatment module, a color fixing module or a dyeing module of a washing device.

[0315] B1. A sustained-release carrier material, characterized in that the sustained-release carrier material comprises a blended water-soluble phase and a non-water-soluble phase, the tensile strength of the sustained-release carrier material is 5MPa-50MPa, the elongation at break is 8%-800%, and the continuity of the water-soluble phase is above 95%.

[0316] B2. The sustained-release carrier material according to claim B1, characterized in that after the sustained-release carrier material completes sustained release in water, more than 95% of the mass of the water-soluble phase is dissolved in water, and less than 5% of the mass of the non-aqueous phase is dispersed in water.

[0317] B3. The sustained-release carrier material according to claim B1 or B2, characterized in that the short side size of the phase region of the water-soluble phase is 100 nm to 10 μm, and the short side size of the phase region of the non-water-soluble phase is 100 nm to 10 μm;

[0318] And / or, the sustained-release rate of the sustained-release carrier material in water is 0.1-3 mg / L.

[0319] B4. The sustained-release carrier material according to any one of claims B1 to B3, characterized in that the water-soluble phase is selected from water-soluble materials, and the processing temperature of the water-soluble materials is 50-200°C.

[0320] B5. The sustained-release carrier material according to any one of claims B1 to B4, characterized in that the water-soluble phase comprises a water-insoluble material, and the processing temperature of the water-insoluble phase is 50-300°C.

[0321] B6. The sustained-release carrier material according to any one of claims B1 to B5, characterized in that the water-soluble material is selected from one or more of polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyacrylamide and polyvinyl pyrrolidone.

[0322] B7. The sustained-release carrier material according to any one of claims B1 to B6, characterized in that the water-insoluble material is selected from one or more of polyolefins, polyesters and ethylene-vinyl acetate copolymers, and the tensile strength of the water-insoluble material is 5 MPa-100 MPa and the elongation at break is 5%-800%.

[0323] B8. The sustained-release carrier material according to any one of claims B1 to B7, wherein the water-soluble material is polyethylene oxide, and the molecular weight of the polyethylene oxide is 100,000 to 1,000,000;

[0324] And / or, the non-water-soluble material is any one of low-density polyethylene, homopolypropylene, ethylene-octene block copolymer, polycaprolactone, polybutylene terephthalate-adipate or ethylene-vinyl acetate copolymer, and the tensile strength of the non-water-soluble material is 5MPa-50MPa, and the elongation at break is 50%-800%.

[0325] B9. Use of the sustained-release carrier material according to any one of claims B1 to B8 in the sustained-release of functional materials;

[0326] Preferably, the functional material is an aromatherapy material, a detergent, a scale inhibitor, a bactericide, a bacteriostatic agent, a water treatment material, a clothing treatment agent, a color fixing agent, a biofilm remover or a dye.

[0327] B10. Use of the slow-release carrier material according to any one of claims B1 to B8 in a washing device;

[0328] Preferably, the slow-release carrier material is used in an aromatherapy module, a detergent module, a scale inhibition module, a sterilization module, a bacteriostasis module, a water treatment module, a clothing treatment module, a color fixing module or a dyeing module of a washing device. Industrial Applicability

[0329] The sustained-release functional material disclosed in the present invention shows significant application value in clothing washing and care and has strong industrial applicability.

Claims

1. A sustained-release functional material, comprising an insoluble substrate and a functional substance, characterized in that: The lowest processing temperature of the insoluble substrate is less than the highest failure temperature of the functional substance.

2. The sustained-release functional material according to claim 1, characterized in that: The sustained-release functional material further comprises a water-soluble substrate, the functional substance is loaded on the water-soluble substrate, and the lowest processing temperature of the water-soluble substrate is lower than the highest failure temperature of the functional substance.

3. The sustained-release functional material according to claim 1 or 2, characterized in that: The functional substance is an inorganic functional substance, and the failure temperature is the decomposition temperature of the inorganic functional substance; And / or, the functional substance is an organic compound functional substance, and the failure temperature is the decomposition temperature or inactivation temperature of the organic compound functional substance.

4. The sustained-release functional material according to any one of claims 1 to 3, characterized in that: The insoluble substrate is a water-insoluble polymer, and the lowest processing temperature of the insoluble substrate is the glass transition temperature of the water-insoluble polymer.

5. The sustained-release functional material according to any one of claims 2 to 4, characterized in that: The water-soluble substrate is a water-soluble polymer, and the processing temperature of the water-soluble substrate is the glass transition temperature of the water-soluble polymer.

6. The sustained-release functional material according to any one of claims 2 to 5, characterized in that: The method for preparing the sustained-release functional material comprises: loading the functional substance on the water-soluble substrate, and then blending the water-soluble substrate with the insoluble substrate at a processing temperature to obtain the sustained-release functional material, wherein: The lowest processing temperature of the water-soluble substrate and the insoluble substrate is ≤ the processing temperature ≤ the highest failure temperature of the functional substance, and preferably the processing temperature is an intermediate temperature between the lowest processing temperature and the highest failure temperature.

7. The sustained-release functional material according to any one of claims 2 to 6, characterized in that: The water-soluble substrate and the functional substance loaded on the water-soluble substrate form a water-soluble phase in the sustained-release carrier structure, and the water-soluble phase is a continuous phase; And / or, the insoluble matrix forms a water-insoluble phase in the sustained-release carrier structure, and the water-insoluble phase is a continuous phase.

8. The sustained-release functional material according to claim 7, characterized in that: The short side size of the phase region of the water-soluble phase is 100 nm to 10 μm, and the short side size of the phase region of the water-insoluble phase is 100 nm to 10 μm.

9. The sustained-release functional material according to any one of claims 1 to 8, characterized in that: The functional substance is selected from any one or a combination of at least two of aromatherapy materials, detergents, antiscalants, bactericides, bacteriostatic agents, water treatment materials, clothing treatment agents, color fixing agents, biofilm removers or dyes.

10. Use of the sustained-release functional material according to any one of claims 1 to 9 in a washing device; Preferably, the slow-release functional material is used in an aromatherapy module, a washing module, a scale inhibition module, a sterilization module, an antibacterial module, a water treatment module, a clothing treatment module, a color fixing module or a dyeing module of a washing device.

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