Fabric color-enhancing and glowing care agent and preparation method thereof

Abstract

The invention discloses a fabric color-enhancing and glowing care agent and a preparation method thereof. The fabric color-enhancing and glowing care agent comprises a color-enhancing and fragrance-retaining composition and a color-protecting and fragrance-retaining composition, the color-enhancing and fragrance-retaining composition is prepared from the following raw materials in percentage by weight: 42-70% of a first forming agent; 10%-30% of a color enhancing agent; 0.5-10% of a dispersant; 1.5 to 5 percent of cellulase; 2-10% of a first essence; 0.5-3% of a first auxiliary agent; the color-protecting fragrance-retaining composition is prepared from the following raw materials in percentage by weight: 48-90% of a second forming agent; 5-30% of a filling agent; 0.5%-10% of a color fixative; 1-10% of a second essence; and 0.5-3% of a second auxiliary agent. The care agent has the advantages that the care agent capable of enhancing and protecting the color of the fabric is obtained, and the problem of precipitation does not occur.

Description

Technical Field

[0001] This application relates to the field of fabric care agents, and in particular to a fabric color-enhancing and brightening care agent and its preparation method. Background Technology

[0002] The interaction between natural fibers and dyes is physical, and fading can easily occur when the colorfastness is not ideal. Current color-fixing and color-protecting laundry products prevent dye loss by adding cationic polymers such as color-fixing and color-protecting agents, or use cellulase to remove lint from clothes to brighten and enhance the color of fabrics.

[0003] Laundry products using color-fixing agents show significant color-fixing and protection effects during the first wash after purchase, but their effect on brightening and revitalizing faded fabrics is limited. Laundry products using cellulase only remove lint and restructure fabric fibers; neither type of product fundamentally solves the problem of color fading. Furthermore, the addition of color-fixing agents may affect the stability of the laundry detergent, leading to phenomena such as layering, sedimentation, or discoloration. These phenomena not only affect the appearance of the laundry detergent but may also reduce its cleaning effectiveness.

[0004] Currently, laundry detergent sheets that blacken or blue fabrics adhere a single dye to the surface of non-woven fabric, effectively "renovating" faded fabrics. However, in practical use, fabric care sheets made from non-woven fabric are prone to being sucked into the drain pump of drum washing machines due to the small area and light weight of the non-woven fabric, affecting the machine's lifespan. Furthermore, the dye adhered to the non-woven fabric cannot be completely removed during washing; and since hands need to directly contact the non-woven fabric before and after washing, skin can easily become stained with dye. Summary of the Invention

[0005] In order to obtain a fabric color-enhancing and color-protecting agent that can enhance and protect the color of fabrics without causing precipitation problems, this application provides a fabric color-enhancing and color-renewing agent and its preparation method.

[0006] Firstly, the fabric color-enhancing and brightening care agent provided in this application adopts the following technical solution:

[0007] A fabric color-enhancing and color-retaining care agent includes a color-enhancing and fragrance-retaining composition and a color-protecting and fragrance-retaining composition;

[0008] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0009] First molding agent: 42-70%; colorant: 10-30%; dispersant: 0.5-10%; cellulase: 1.5-5%; first fragrance: 2-10%; first auxiliary agent: 0.5-3%;

[0010] The dispersant comprises an ester-based quaternary ammonium salt and a nonionic surfactant, wherein the mass ratio of the ester-based quaternary ammonium salt to the nonionic surfactant is (0.5–5):(1–4);

[0011] The nonionic surfactant includes one or more of fatty alcohol polyoxyethylene ethers, alkoxy compounds, and EO / PO block polyethers.

[0012] The color-protecting and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0013] Second molding agent: 48-90%; filler: 5-30%; color protectant: 0.5-10%; second fragrance: 1-10%; second auxiliary agent: 0.5-3%.

[0014] Quaternary ammonium salts are commonly used surfactants. However, when ordinary quaternary ammonium salts are mixed with color enhancers, they not only fail to disperse the color enhancers but also combine with them to form lakes, exacerbating the precipitation phenomenon in the color-enhancing and fragrance-retaining composition, and even altering the color. Therefore, this application selects ester-based quaternary ammonium salts. With the synergistic effect of ester-based quaternary ammonium salts and the aforementioned nonionic surfactants as dispersants, the solubility and dispersibility of color enhancers during the preparation process can be significantly improved, reducing color enhancer aggregation and precipitation, thereby improving the uniformity of color enhancers in the color-enhancing and fragrance-retaining composition. Furthermore, ester-based quaternary ammonium salts possess excellent softness, antistatic, and bactericidal properties, thus imparting corresponding performance advantages to fabrics. By leveraging the functions of both color enhancers and color-protecting agents, color enhancement and color protection are achieved on fabrics without precipitation problems.

[0015] Optionally, the mass ratio of the colorant to the dispersant is (3-15):1.

[0016] Preferably, the mass ratio of the colorant to the dispersant is (5-8):1.

[0017] Optionally, the mass ratio of the color-enhancing and fragrance-retaining composition to the color-protecting and fragrance-retaining composition is (0.5-6):1.

[0018] Optionally, the fatty alcohol polyoxyethylene ether has an EO ≥ 25.

[0019] Optionally, the alkoxy compound includes one or more of alkyl glycoside alkoxylates, fatty acid alkoxylates, and cashew phenol alkoxylates.

[0020] Optionally, the first molding agent and the second molding agent each independently comprise polyethylene glycol, wherein the polyethylene glycol has a molecular weight of 4,000 to 20,000. Preferably, the first molding agent comprises polyethylene glycol with a molecular weight of 4,000 to 15,000 and polyethylene glycol with a molecular weight of 18,000 to 22,000, wherein the mass ratio of the polyethylene glycol with a molecular weight of 4,000 to 15,000 to polyethylene glycol with a molecular weight of 18,000 to 22,000 is (4 to 5):(1 to 2).

[0021] Here, molecular weight refers to weight-average molecular weight.

[0022] By employing the above technical solution, color-enhancing and fragrance-retaining compositions and color-protecting and fragrance-retaining compositions are prepared using polyethylene glycols of different molecular weights in specific proportions. This results in the color-enhancing and fragrance-retaining compositions having a longer dissolution time in water than the color-protecting and fragrance-retaining compositions. This allows the color enhancer to preferentially bind to the fabric before binding to the color-protecting agent. Simultaneously, because the color-protecting and fragrance-retaining compositions require a certain amount of time to dissolve, they do not affect the detergency of detergents when used together with them.

[0023] Optionally, the care agent further includes a coating agent composed of a water-soluble polyvinyl alcohol film-forming agent, wherein the coating agent accounts for 1 to 16% of the weight of the care agent.

[0024] Preferably, the encapsulating agent is a polyvinyl alcohol film.

[0025] Optionally, the color-protecting agent includes one or more of the following: a copolymer of vinylimidazole / vinylpyrrolidone, a modified copolymer of vinylimidazole / vinylpyrrolidone, and an aliphatic polyurethane derivative.

[0026] Optionally, the color enhancer includes a dye or a combination of a dye and a fluorescent whitening agent.

[0027] Optionally, the first and second adjuvants each independently include one or more of sodium chloride, sodium sulfate, and glycerol.

[0028] Optionally, the first and second fragrances each independently include one or more of liquid fragrances and microcapsule fragrances.

[0029] Optionally, the filler includes plant starch.

[0030] Optionally, the plant starch includes one or more of corn starch, tapioca starch, potato starch, pea starch, and glutinous rice flour.

[0031] Secondly, the preparation method of the fabric color-enhancing and brightening care agent provided in this application adopts the following technical solution:

[0032] A method for preparing a fabric color-enhancing and brightening care agent includes the following steps:

[0033] The first molding agent is heated to melt it. While stirring, a dispersant, a colorant, a first fragrance, cellulase, and a first auxiliary agent are added to obtain a preparative solution of the color-enhancing and fragrance-retaining composition.

[0034] The color-enhancing and fragrance-retaining composition preparative liquid was granulated and cooled to obtain the color-enhancing and fragrance-retaining composition.

[0035] The second molding agent is heated to melt it. While stirring, fillers, color-protecting agents, second fragrances, and second additives are added to obtain a color-protecting and fragrance-preserving preparatory liquid.

[0036] The color-protecting and fragrance-preserving preparative liquid is granulated and cooled to obtain a color-protecting and fragrance-preserving composition. Then, the color-enhancing and fragrance-preserving composition is mixed with the color-protecting and fragrance-preserving composition to obtain a conditioning agent; or, the color-protecting and fragrance-preserving preparative liquid is granulated on the surface of the color-enhancing and fragrance-preserving composition and cooled to obtain a conditioning agent.

[0037] In summary, this application has the following beneficial effects:

[0038] This application, through the synergistic effect of ester-based quaternary ammonium salt and the aforementioned nonionic surfactant as dispersants, can significantly improve the solubility and dispersibility of color enhancers during the preparation process, reduce color enhancer aggregation and precipitation, thereby improving the uniformity of color enhancers in the color-enhancing and fragrance-retaining composition. Furthermore, the ester-based quaternary ammonium salt possesses excellent softness, antistatic, and bactericidal properties, imparting corresponding performance advantages to the fabric. By leveraging the functions of both color enhancers and color-protecting agents, it achieves both color enhancement and color protection for fabrics without causing precipitation problems. Attached Figure Description

[0039] Figure 1 This is a photograph of the color-enhancing and fragrance-retaining preparative liquid obtained in Example 1 of this application.

[0040] Figure 2 This is a photograph of the color-enhancing and fragrance-retaining preparative liquid prepared according to Comparative Example 1 of this application. Detailed Implementation

[0041] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0042] Some of the raw materials used in the following examples are as follows:

[0043] The ester-based quaternary ammonium salts are C16-C18 and were purchased from Guangzhou Tuoxin Chemical Technology Co., Ltd.

[0044] The fatty alcohol polyoxyethylene ether was purchased from BASF (China) Co., Ltd., with an EO number ≥25.

[0045] The EO / PO block polyether was purchased from BASF (China) Co., Ltd., model Pluronic PE 6100.

[0046] The polydimethyldiallylammonium chloride was purchased from Shanghai Zhaochang Senyong Textile Co., Ltd., model 50D.

[0047] The copolymer of vinylimidazole / vinylpyrrolidone was purchased from BASF (China) Co., Ltd., model Sokalan HP56K.

[0048] The modified vinylimidazole / vinylpyrrolidone copolymer was purchased from BASF (China) Co., Ltd., model SokalanHP 66K.

[0049] The aliphatic polyurethane derivative was purchased from Clariant Chemicals (China) Co., Ltd., model TexCare DFC 6pre.

[0050] The alkyl glycoside alkoxylate was purchased from the China Daily Chemical Research Institute, model APG-NF.

[0051] The fatty acid alkoxylates were purchased from BASF, model number Emulan A.

[0052] The manufacturer models mentioned above are used to support the scheme of this application to provide sufficient disclosure, and are not limited to the manufacturer models listed.

[0053] Example 1

[0054] A fabric color-enhancing and color-retaining care agent includes a color-enhancing and fragrance-retaining composition and a color-protecting and fragrance-retaining composition, wherein the mass ratio of the color-enhancing and fragrance-retaining composition to the color-protecting and fragrance-retaining composition is 0.5:1.

[0055] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0056] Polyethylene glycol 61.5%, direct sunscreen 23%, cellulase 1%, ester quaternary ammonium salt 2.5%, alkyl glycoside alkoxylate 2%, sodium chloride 1%, glycerol 1%, liquid fragrance 4%, microcapsule fragrance 4%.

[0057] The polyethylene glycol is composed of polyethylene glycol with a weight average molecular weight of 20,000 and polyethylene glycol with a weight average molecular weight of 6,000 in a mass ratio of 5:2.

[0058] Color-protecting and fragrance-retaining composition: 56% polyethylene glycol, 25% glutinous rice flour, 8% vinylimidazole / vinylpyrrolidone copolymer, 8% liquid fragrance, 1% microcapsule fragrance, and 2% glycerol.

[0059] Among them, polyethylene glycol is polyethylene glycol with a weight average molecular weight of 20,000.

[0060] A method for preparing a fabric color-enhancing and brightening care agent includes the following steps:

[0061] The polyethylene glycol in the color-enhancing and fragrance-retaining composition was heated to 70°C until melted. While stirring, the ester-based quaternary ammonium salt and alkyl glycoside alkoxylate were added. After stirring until homogeneous, direct sunscreen was added and stirred until homogeneous again. Heating was then stopped, and the temperature was lowered to 65°C. The liquid fragrance, microcapsule fragrance, cellulase, sodium chloride, and glycerol in the color-enhancing and fragrance-retaining composition were added sequentially and stirred until homogeneous to obtain the preparative solution of the color-enhancing and fragrance-retaining composition. (Image shown) Figure 1 As shown.

[0062] The color-enhancing and fragrance-retaining composition preparative liquid was granulated using a granulator, and the granulated liquid was cooled to obtain the color-enhancing and fragrance-retaining composition.

[0063] The polyethylene glycol in the color-protecting and fragrance-retaining composition is heated to 75°C to melt it. Glutinous rice flour is added while stirring. After stirring evenly, heating is stopped, and the temperature is lowered to 65°C. Then, the vinylimidazole / vinylpyrrolidone copolymer, liquid fragrance, microcapsule fragrance, and glycerol in the color-protecting and fragrance-retaining composition are added in sequence and stirred evenly to obtain the color-protecting and fragrance-retaining preparative solution.

[0064] The color-protecting and fragrance-preserving preparative liquid was granulated using a granulator, and the color-protecting and fragrance-preserving composition was obtained after cooling.

[0065] A color-enhancing and fragrance-retaining composition is mixed with a color-protecting and fragrance-retaining composition to obtain a care product.

[0066] Example 2

[0067] A fabric color-enhancing and color-retaining care agent includes a color-enhancing and fragrance-retaining composition and a color-protecting and fragrance-retaining composition, wherein the mass ratio of the color-enhancing and fragrance-retaining composition to the color-protecting and fragrance-retaining composition is 6:1.

[0068] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0069] Polyethylene glycol 65.7%, direct sunscreen 20%, cellulase 0.8%, ester quaternary ammonium salt 1.5%, fatty alcohol polyoxyethylene ether 1.5%, sodium sulfate 2.5%, liquid fragrance 6%, microcapsule fragrance 2%.

[0070] The polyethylene glycol is composed of polyethylene glycol with a weight average molecular weight of 20,000 and polyethylene glycol with a weight average molecular weight of 15,000 in a mass ratio of 4:1.

[0071] The color-protecting and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0072] Polyethylene glycol 64%, pea starch 19%, aliphatic polyurethane derivatives 9%, liquid flavor 3%, microencapsulated flavor 3%, glycerol 2%.

[0073] Among them, polyethylene glycol is polyethylene glycol with a weight average molecular weight of 20,000.

[0074] A method for preparing a fabric color-enhancing and brightening care agent includes the following steps:

[0075] The polyethylene glycol in the color-enhancing and fragrance-retaining composition is heated to 80°C to melt it. While stirring, ester-based quaternary ammonium salt and fatty alcohol polyoxyethylene ether are added. After stirring evenly, direct sun-resistant black is added. After stirring evenly, heating is stopped. The temperature is lowered to 65°C, and then liquid fragrance, microcapsule fragrance, cellulase, and sodium sulfate in the color-enhancing and fragrance-retaining composition are added in sequence. The mixture is stirred evenly to obtain the color-enhancing and fragrance-retaining composition preparative solution.

[0076] The color-enhancing and fragrance-retaining composition preparative liquid was granulated using a granulator, and the granulated liquid was cooled to obtain the color-enhancing and fragrance-retaining composition.

[0077] The polyethylene glycol in the color-protecting and fragrance-retaining composition is heated to 75°C to melt it. Pea starch is added while stirring. After stirring evenly, the heating is stopped. The temperature is lowered to 65°C, and then the aliphatic polyurethane derivative, liquid fragrance, microcapsule fragrance and glycerol in the color-protecting and fragrance-retaining composition are added in sequence. The mixture is stirred evenly to obtain the color-protecting and fragrance-retaining preparative solution.

[0078] The color-protecting and fragrance-preserving preparative liquid was granulated using a granulator, and the color-protecting and fragrance-preserving composition was obtained after cooling.

[0079] A color-enhancing and fragrance-retaining composition is mixed with a color-protecting and fragrance-retaining composition to obtain a care product.

[0080] Example 3

[0081] A fabric color-enhancing and color-retaining care agent includes a color-enhancing and fragrance-retaining composition, a color-protecting and fragrance-retaining composition, and an encapsulating agent, wherein the mass ratio of the color-enhancing and fragrance-retaining composition, the color-protecting and fragrance-retaining composition, and the encapsulating agent is 1:1:0.02.

[0082] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0083] Polyethylene glycol 62%, direct sunscreen 21%, cellulase 2%, ester quaternary ammonium salt 2.5%, fatty alcohol polyoxyethylene ether 3%, fatty acid alkoxylate 1.5%, sodium sulfate 0.5%, liquid fragrance 5%, microcapsule fragrance 3%.

[0084] The polyethylene glycol is composed of polyethylene glycol with a weight average molecular weight of 20,000 and polyethylene glycol with a weight average molecular weight of 15,000 in a mass ratio of 4:1.

[0085] The color-protecting and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0086] Polyethylene glycol 61%, pea starch 23%, aliphatic polyurethane derivative 5%, modified vinylimidazole / vinylpyrrolidone 1%, vinylimidazole / vinylpyrrolidone copolymer 1%, liquid fragrance 5%, microcapsule fragrance 2%, glycerol 2%.

[0087] Among them, polyethylene glycol is polyethylene glycol with a weight average molecular weight of 20,000.

[0088] A method for preparing a fabric color-enhancing and brightening care agent includes the following steps:

[0089] The polyethylene glycol in the color-enhancing and fragrance-retaining composition is heated to 80°C to melt it. While stirring, ester-based quaternary ammonium salt, fatty alcohol polyoxyethylene ether, and fatty acid alkoxylate are added. After stirring evenly, direct sun-resistant black is added. After stirring evenly, heating is stopped, and the temperature is lowered to 65°C. Then, liquid fragrance, microcapsule fragrance, cellulase, and sodium sulfate in the color-enhancing and fragrance-retaining composition are added in sequence and stirred evenly to obtain the color-enhancing and fragrance-retaining composition preparative solution.

[0090] The color-enhancing and fragrance-retaining composition preparative liquid was granulated using a granulator, and the granulated liquid was cooled to obtain the color-enhancing and fragrance-retaining composition.

[0091] The polyethylene glycol in the color-protecting and fragrance-retaining composition is heated to 75°C to melt it. Pea starch is added while stirring. After stirring evenly, the heating is stopped. The temperature is lowered to 65°C, and then the vinylimidazole / vinylpyrrolidone copolymer, liquid fragrance, microcapsule fragrance, and glycerol in the color-protecting and fragrance-retaining composition are added in sequence. The mixture is stirred evenly to obtain the color-protecting and fragrance-retaining preparative solution.

[0092] The color-protecting and fragrance-retaining preparative liquid is granulated using a granulator, and after cooling, a color-protecting and fragrance-retaining composition is obtained. The color-enhancing and fragrance-retaining composition is mixed with the color-protecting and fragrance-retaining composition, and then loaded together using an encapsulating agent, which is a polyvinyl alcohol film. The finished product is then bottled.

[0093] Example 4

[0094] The difference between this embodiment and Embodiment 1 is that the components of the color-enhancing and fragrance-retaining composition are different.

[0095] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0096] Polyethylene glycol 50.5%, Direct Blue 28%, Cellulase 2.5%, Ester quaternary ammonium salt 5%, Fatty acid alkoxylate 4%, Sodium chloride 1%, Glycerol 1%, Liquid fragrance 4%, Microcapsule fragrance 4%. All others are the same.

[0097] The polyethylene glycol is composed of polyethylene glycol with a weight average molecular weight of 20,000 and polyethylene glycol with a weight average molecular weight of 6,000 in a mass ratio of 5:2.

[0098] Example 5

[0099] A fabric color-enhancing and color-retaining care agent, with a double-layer semi-encapsulated design, includes a color-enhancing and fragrance-retaining composition and a color-protecting and fragrance-retaining composition, wherein the mass ratio of the color-enhancing and fragrance-retaining composition to the color-protecting and fragrance-retaining composition is 0.5:1.

[0100] The color-enhancing and fragrance-retaining composition consists of the following raw materials in weight percentages: polyethylene glycol 67%, direct sunscreen 14.5%, fluorescent whitening agent 5%, cellulase 1%, ester quaternary ammonium salt 0.5%, alkyl glycoside alkoxylate 1%, fatty alcohol polyoxyethylene ether 0.5%, EO / PO block polyether 0.5%, sodium chloride 1%, glycerol 1%, liquid fragrance 4%, and microcapsule fragrance 4%.

[0101] Among them, polyethylene glycol is polyethylene glycol with a weight average molecular weight of 8000.

[0102] The color-protecting and fragrance-retaining composition consists of the following raw materials in weight percentage: 62% polyethylene glycol, 25% glutinous rice flour, 5% aliphatic polyurethane derivative, 5% liquid fragrance, 1% microcapsule fragrance, and 2% glycerol.

[0103] Among them, polyethylene glycol is polyethylene glycol with a weight average molecular weight of 20,000.

[0104] The preparation method of the fabric color-enhancing and brightening care agent includes the following steps:

[0105] The polyethylene glycol in the color-enhancing and fragrance-retaining composition is heated to 70°C to melt it. While stirring, the ester-based quaternary ammonium salt and alkyl glycoside alkoxylate are added. After stirring evenly, direct sun-resistant blackening agent and fluorescent whitening agent are added. After stirring evenly, heating is stopped, and the temperature is lowered to 65°C. Then, the liquid fragrance, microcapsule fragrance, cellulase, sodium chloride and glycerol in the color-enhancing and fragrance-retaining composition are added in sequence and stirred evenly to obtain the color-enhancing and fragrance-retaining composition preparative solution.

[0106] The color-enhancing and fragrance-retaining composition preparative liquid was granulated using a granulator, and the granulated liquid was cooled to obtain the color-enhancing and fragrance-retaining composition.

[0107] The polyethylene glycol in the color-protecting and fragrance-retaining composition is heated to 75°C to melt it. Glutinous rice flour is added while stirring. After stirring evenly, heating is stopped, and the temperature is lowered to 65°C. Then, the aliphatic polyurethane derivative, liquid fragrance, microcapsule fragrance, and glycerol in the color-protecting and fragrance-retaining composition are added in sequence and stirred evenly to obtain the color-protecting and fragrance-retaining preparative solution.

[0108] The color-protecting and fragrance-preserving preparative liquid is granulated on the surface of the color-enhancing and fragrance-preserving composition using a granulator. After cooling, the conditioning agent is obtained and bottled to obtain the finished product.

[0109] Example 6

[0110] The difference from Example 1 is that the amount of raw materials used in the color-enhancing and fragrance-retaining compositions and the color-protecting and fragrance-retaining compositions are different, and direct sun-resistant red is used instead of direct sun-resistant black.

[0111] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0112] Polyethylene glycol 42%, Direct Sunlight Red 30%, Cellulase 5%, Ester quaternary ammonium salt 6%, Alkyl glycoside alkoxylate 4%, Sodium chloride 1%, Glycerol 2%, Liquid fragrance 5%, Microcapsule fragrance 5%.

[0113] Color-protecting and fragrance-retaining composition: 90% polyethylene glycol, 5% glutinous rice flour, 0.5% copolymer of vinylimidazole / vinylpyrrolidone, 2% liquid fragrance, 2% microcapsule fragrance, and 0.5% glycerol.

[0114] Example 7

[0115] The difference from Example 1 is that the amount of raw materials used in the color-enhancing and fragrance-retaining compositions and the color-protecting and fragrance-retaining compositions are different, and direct sun-resistant yellow is used instead of direct sun-resistant black.

[0116] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0117] Polyethylene glycol 70%, Direct Daylight Yellow 22.5%, Cellulase 2%, Ester Quaternary Ammonium Salt 1%, Alkyl Glucoside Alkoxylate 0.5%, Sodium Chloride 0.2%, Glycerol 0.3%, Liquid Fragrance 2%, Microencapsulated Fragrance 1.5%.

[0118] Color-protecting and fragrance-retaining composition: 48.5% polyethylene glycol, 30% glutinous rice flour, 9.5% copolymer of vinylimidazole / vinylpyrrolidone, 4% liquid fragrance, 4% microcapsule fragrance, and 3% glycerol.

[0119] Comparative Example 1

[0120] The difference between this comparative example and Example 1 lies in the different color-enhancing and fragrance-retaining compositions.

[0121] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0122] Polyethylene glycol 66%, direct sunscreen 23%, cellulase 1%, sodium chloride 1%, glycerol 1%, liquid fragrance 4%, microencapsulated fragrance 4%.

[0123] The polyethylene glycol is composed of polyethylene glycol with a weight average molecular weight of 20,000 and polyethylene glycol with a weight average molecular weight of 6,000 in a mass ratio of 5:2.

[0124] A photograph of the color-enhancing and fragrance-retaining composition preparative liquid made from the above-mentioned raw materials of the color-enhancing and fragrance-retaining composition is shown below. Figure 2 As shown.

[0125] Comparative Example 2

[0126] The difference between this comparative example and Example 1 lies in the different color-enhancing and fragrance-retaining compositions.

[0127] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0128] Polyethylene glycol 61.5%, direct sun tanning agent 23%, cellulase 1%, ester quaternary ammonium salt 2.5%, alkyl glycoside 2%, sodium chloride 1%, glycerol 1%, liquid fragrance 4%, microcapsule fragrance 4%.

[0129] Comparative Example 3

[0130] The difference from Example 1 lies in the different color-enhancing and fragrance-retaining compositions.

[0131] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0132] Polyethylene glycol 61.5%, direct sunscreen 23%, cellulase 1%, polydimethyldiallylammonium chloride 2.5%, alkyl glycoside alkoxylate 2%, sodium chloride 1%, glycerol 1%, liquid fragrance 4%, microcapsule fragrance 4%.

[0133] Comparative Example 4

[0134] The difference from Example 1 lies in the different color-enhancing and fragrance-retaining compositions.

[0135] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0136] Polyethylene glycol 61.5%, direct sunscreen 23%, cellulase 1%, alkyl glycoside alkoxylate 4.5%, sodium chloride 1%, glycerol 1%, liquid fragrance 4%, microcapsule fragrance 4%.

[0137] Comparative Example 5

[0138] The difference from Example 1 lies in the different color-enhancing and fragrance-retaining compositions.

[0139] The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage:

[0140] Polyethylene glycol 61.5%, Direct sunscreen 23%, Cellulase 1%, Ester quaternary ammonium salt 2.5%, Tween-20 2%, Sodium chloride 1%, Glycerol 1%, Liquid fragrance 4%, Microcapsule fragrance 4%.

[0141] Comparative Example 6

[0142] The difference from Example 1 is that it does not contain a color-protecting and fragrance-retaining composition.

[0143] Yield statistics

[0144] Within the same time period, the yields of fabric color-enhancing and brightening care agents prepared by different embodiments or comparative examples were statistically analyzed, and the results are shown in Table 1.

[0145] Table 1. Yield of color-enhancing care products within the same time period.

[0146]

[0147]

[0148] Whether it is a small or large device, when the stock solution contains insoluble precipitates, the precipitates will aggregate due to gravity and preferentially flow out of the device for granulation. The precipitates will remain in the granulation port. After multiple granulation processes, the diameter of the granulation port will become smaller and smaller, resulting in uneven particle size and shape (defective products). Even worse, the precipitates will block the granulation port, making granulation impossible.

[0149] like Figure 1 As shown, the color-enhancing and fragrance-retaining composition preparation liquid of Example 1 can drip naturally, and the granulation yield is as high as 94.9%; no dispersant was added in Comparative Example 1. Figure 2 The color-enhancing and fragrance-retaining composition preparation liquid of Comparative Example 1 showed clumping, resulting in a yield of only 18.5%. Comparative Examples 2 and 5, where other nonionic surfactants replaced the alkoxy compounds, showed a significant decrease in the yield of color-enhancing and conditioning beads. Comparative Example 4, without adding the dispersant ester-based quaternary ammonium salt but increasing the content of another dispersant alkoxy compound, also resulted in a reduced yield of color-enhancing and conditioning beads. Comparative Example 3, using other quaternary ammonium salts in equal amounts to replace the ester-based quaternary ammonium salt, significantly reduced the yield of the resulting fabric color-enhancing and brightening conditioning agent to 12.4%, lower than Comparative Example 1 without any dispersant. Due to the replacement of the dispersant, the color enhancer could not be evenly dispersed in the stock solution, resulting in low yields in Comparative Examples 1-5. Furthermore, the content of the color enhancer in the resulting fabric color-enhancing and brightening conditioning agent was far lower than the actual amount of color enhancer added.

[0150] Testing and Evaluation

[0151] Subjective evaluation of color enhancement effect: Black / blue / red / yellow fabrics were washed more than 30 times with national standard laundry detergent until they appeared white. They were then cut into 30x30cm square pieces and washed with 15g of sample. The color enhancement effect of different samples was evaluated (from 1 to 11, with 1 being the best and 11 being the worst). The results are shown in Table 2.

[0152] Table 2 Sensory Evaluation Results of Blackening Effect

[0153]

[0154] As shown in Table 2, the blackening effect of Comparative Examples 1-5 is weaker than that of Example 1.

[0155] Colorfastness Test: According to AATCC 61-2010 "Colorfastness to Washing: Accelerated", prepare soap solution (under the test condition of 40°C, 5g soap powder per liter of water; under the test condition of 60°C, 5g soap powder and 2g sodium carbonate per liter of water). Sew a piece of black / blue / red / yellow fabric (the fabric after the above-mentioned color enhancement effect test, cut into 8X3cm) and a multi-fiber lining fabric into a combined specimen. Put the combined fabric sample into a colorfastness to washing tester for washing. After drying, continue with the above steps for a total of 25 washing cycles. After the washing is completed, use a gray scale and a staining gray scale to rate the color change degree (after 25 washing cycles) and the staining degree (after 1 washing) of the specimen. (Grade 5 is the best, and Grade 1 is the worst). The results are shown in Table 3.

[0156] Table 3 Colorfastness Test Results

[0157] As shown in Table 3, the black / blue fabrics washed once in Examples 1-5 can still maintain good colorfastness when washed 25 times with soap solution at different temperatures. From Tables 4, 5, and 7, it can be concluded that without adding softeners, antistatic agents, and bactericides, the examples have good softening, antistatic, and antibacterial effects on fabrics.

[0158] Subjective Evaluation of Fabric Handfeel: According to Appendix A of FZ / T 01166-2022 "Textiles - Detection and Evaluation Methods for Fabric Touch: Multi-index Integration Method", evaluate the surface roughness of the washed fabric (with a full score of 10 points, ≤5 means not smooth). Use the unwashed black fabric as a control. The results are shown in Table 4.

[0159] Table 4 Sensory Evaluation Results of Softening Effect

[0160]

[0161] Fabric Conditioning Antistatic Test: Conduct the test according to GB / T6801-2013 "Determination of Antistatic Performance of Fabric Conditioners". The logarithmic difference of surface specific resistance △lgρs≥2.5 is qualified. The test polyester fabric is purchased from the National Institute of Daily Chemical Industry. The results are shown in Table 5.

[0162] Table 5 Antistatic Test Results

[0163]

[0164] Antibacterial Performance Test: Detect the inhibition rates of Staphylococcus aureus and Escherichia coli according to QB / T 2738-2023 "Evaluation Method for Antibacterial and Bacteriostatic Effects of Daily Chemical Products". The results are shown in Table 6.

[0165] Table 6 Detergency Test Results

[0166] Sample Name Escherichia coli inhibition rate / % Staphylococcus aureus inhibition rate / % Example 1 97.19 97.30 Example 2 98.47 98.54 Example 3 99.42 99.63 Example 4 99.99 99.35 Example 5 96.63 97.30

[0167] Tables 4, 5, and 6 show that, without the addition of softeners, antistatic agents, or bactericides, the examples demonstrate good softening, antistatic, and antibacterial effects on the fabrics.

[0168] Detergency test: According to GB / T 13174-2021 "Determination of detergency and recycle performance of detergents for clothing", the washing water was hard water with 250mg / kg CaCl2. The test fabrics were national standard carbon black JB-01 soiled fabric, national standard protein JB-02 soiled fabric, and national standard sebum JB-03 soiled fabric. The detergency was measured and the results are shown in Table 7.

[0169] Table 7 Detergency Test Results

[0170]

[0171] As shown in Table 7, the stain removal power was not affected when the solid color-protecting and fragrance-retaining combination was used together with the national standard laundry detergent, but the stain removal power decreased when the color-protecting agent was directly mixed with the national standard laundry detergent.

[0172] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A fabric color-enhancing and brightening care agent, characterized in that: Including color-enhancing and fragrance-retaining compositions and color-protecting and fragrance-retaining compositions; The color-enhancing and fragrance-retaining composition consists of the following raw materials by weight percentage: First molding agent: 42-70%; colorant: 10-30%; dispersant: 0.5-10%; cellulase: 1.5-5%; first fragrance: 2-10%; first auxiliary agent: 0.5-3%; The dispersant comprises an ester-based quaternary ammonium salt and a nonionic surfactant, wherein the mass ratio of the ester-based quaternary ammonium salt to the nonionic surfactant is (0.5–5):(1–4); The nonionic surfactant includes one or more of fatty alcohol polyoxyethylene ethers, alkoxy compounds, and EO / PO block polyethers. The color-protecting and fragrance-retaining composition consists of the following raw materials by weight percentage: Second molding agent: 48-90%; filler: 5-30%; color protectant: 0.5-10%; second fragrance: 1-10%; second auxiliary agent: 0.5-3%.

2. The fabric color-enhancing and brightening care agent according to claim 1, characterized in that: The mass ratio of the color-enhancing and fragrance-retaining composition to the color-protecting and fragrance-retaining composition is (0.5-6):

1.

3. The fabric color-enhancing and brightening care agent according to claim 1, characterized in that: The alkoxy compounds include one or more of alkyl glycoside alkoxylates, fatty acid alkoxylates, and cashew phenol alkoxylates.

4. The fabric color-enhancing and brightening care agent according to claim 1, characterized in that: The first molding agent and the second molding machine each independently comprise polyethylene glycol, wherein the molecular weight of the polyethylene glycol is 4,000 to 20,000.

5. The fabric color-enhancing and brightening care agent according to claim 4, characterized in that: The first molding agent comprises polyethylene glycol with a molecular weight of 4,000 to 15,000 and polyethylene glycol with a molecular weight of 18,000 to 22,000, and the mass ratio of the polyethylene glycol with a molecular weight of 4,000 to 15,000 to polyethylene glycol with a molecular weight of 18,000 to 22,000 is (4 to 5):(1 to 2).

6. The fabric color-enhancing and brightening care agent according to claim 1, characterized in that: The first and second additives each independently include one or more of sodium chloride, sodium sulfate, and glycerol.

7. The fabric color-enhancing and brightening care agent according to claim 1, characterized in that: The color-protecting agent includes one or more of the following: a copolymer of vinylimidazole / vinylpyrrolidone, a modified copolymer of vinylimidazole / vinylpyrrolidone, and an aliphatic polyurethane derivative.

8. The fabric color-enhancing and brightening care agent according to claim 1, characterized in that: The filler includes plant starch.

9. A method for preparing a fabric color-enhancing and brightening care agent according to any one of claims 1-8, comprising the following steps: The first molding agent is heated to melt it. While stirring, a dispersant, a colorant, a first fragrance, cellulase, and a first auxiliary agent are added to obtain a preparative solution of the color-enhancing and fragrance-retaining composition. The color-enhancing and fragrance-retaining composition preparative liquid was granulated and cooled to obtain the color-enhancing and fragrance-retaining composition. The second molding agent is heated to melt it. While stirring, fillers, color-protecting agents, second fragrances, and second additives are added to obtain a color-protecting and fragrance-preserving preparatory liquid. The color-protecting and fragrance-preserving preparative liquid is granulated and cooled to obtain a color-protecting and fragrance-preserving composition. Then, the color-enhancing and fragrance-preserving composition is mixed with the color-protecting and fragrance-preserving composition to obtain a conditioning agent; or, the color-protecting and fragrance-preserving preparative liquid is granulated on the surface of the color-enhancing and fragrance-preserving composition and cooled to obtain a conditioning agent.

10. The method for preparing a fabric color-enhancing and brightening care agent according to claim 9, characterized in that: The color-enhancing and fragrance-retaining compositions and the color-protecting and fragrance-retaining compositions are loaded separately using an encapsulating agent; or, a care agent obtained by combining the color-enhancing and fragrance-retaining compositions with the color-protecting and fragrance-retaining compositions is loaded using an encapsulating agent.

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