Nursing aid and preparation method thereof

Abstract

The invention discloses a nursing aid and a preparation method thereof, and belongs to the technical field of industrial nursing agents. Wherein the nursing aid is prepared from the following raw materials in parts by weight: 40 to 60 parts of sodium percarbonate, 30 to 50 parts of fatty alcohol-polyoxyethylene ether, 80 to 120 parts of propylene glycol, 5 to 15 parts of coconut diethanolamide condensate, 20 to 40 parts of ethylene glycol tert-butyl ether, 10 to 30 parts of polyvinyl alcohol and 15 to 30 parts of polyether modified polysiloxane. The preparation method of the nursing auxiliary agent comprises the following steps: sequentially adding all raw materials of the nursing auxiliary agent into a sealed reaction kettle, mixing and stirring for 20 minutes, then introducing into a pressure tank, and sealing, thereby obtaining the nursing auxiliary agent. After the prepared nursing auxiliary agent is mixed with a conventional plastic cleaning agent SDS for use, on one hand, the problem of yellowing of the surfaces of plastics such as ABS is solved, and on the other hand, the nursing auxiliary agent also has relatively good adhesive removal performance.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial care agents, and in particular relates to a care auxiliary agent and a preparation method thereof. Background Art

[0002] At present, there are few studies on plastic care additives with dual functions of removing yellowing and glue from plastics. Plastic surfaces are prone to aging under ultraviolet rays or in high oxygen or ozone environments, resulting in tiny cracks, causing dirt to penetrate into the plastic, and further reactions causing yellow spots on the plastic surface, affecting the beauty of plastic objects. Plastic surfaces are difficult to clean after being contaminated because of their low surface energy, usually only 30-34 dynes. At present, there are still no good cleaning agents and methods for this type of pollution. The existing technology is to polish the plastic surface, but for severe yellow spots, polishing cannot completely remove them. At the same time, plastic surfaces are often attached with self-adhesive products, but they are easy to stick and difficult to tear off. Due to the uneven quality of adhesives or aging over time, it is always difficult to tear off these stickers, either they cannot be torn off, or too much adhesive that is difficult to clean remains. The remaining stickers and adhesives affect both the appearance and the secondary posting, so it is necessary to remove them. At present, plastic cleaning agents are widely used in the market, such as an environmentally friendly and recyclable plastic cleaning agent disclosed in the invention patent with patent number CN109181896B, and its technical solution is as follows: "Technical solution:

[0003] The invention discloses an environmentally friendly recyclable plastic cleaning agent. The plastic cleaning agent is composed of the following raw materials in percentage by mass: 15-35% of sodium sulfate decahydrate, 1-5% of fatty alcohol polyoxyethylene ether, 1-2% of sodium dodecyl sulfonate, 5-15% of sodium percarbonate, 5-25% of sodium perborate, and the balance of propionic acid, propionic acid ester and water complex.

[0004] The propionic acid, propionic ester and water complex comprises a byproduct water material of producing ethyl propionate, which contains 73-78% of water, 5-7% of propionic acid / sodium propionate, 2-4% of ethyl propionate and 15-20% of ethanol by mass percentage.

[0005] The propionic acid, propionic ester and water complex comprises a byproduct water material produced by producing n-propyl propionate, which contains 70-75% of water, 4-6% of propionic acid / sodium propionate, 1-3% of n-propyl propionate and 20-25% of n-propanol by mass percentage.

[0006] According to the requirement, 25-30% by mass of 1,2-ethylene glycol can be added to the plastic cleaning agent.

[0007] 5-10% by mass of organic amine can be added to the plastic cleaning agent as required.

[0008] The plastic cleaning agent is composed of the following raw materials in percentage by mass: 15% sodium sulfate decahydrate, 5% fatty alcohol polyoxyethylene ether, 1% sodium dodecyl sulfonate, 15% sodium percarbonate, 5% sodium perborate, and the balance of propionic acid, propionic ester and water complex.

[0009] The plastic cleaning agent is composed of the following raw materials in percentage by mass: 35% sodium sulfate decahydrate, 1% fatty alcohol polyoxyethylene ether, 2% sodium dodecyl sulfonate, 5% sodium percarbonate, 25% sodium perborate, and the balance of propionic acid, propionic ester and water complex.

[0010] The plastic cleaning agent is composed of the following raw materials in percentage by mass: 25% sodium sulfate decahydrate, 3.5% fatty alcohol polyoxyethylene ether, 1.5% sodium dodecyl sulfonate, 10% sodium percarbonate, 15% sodium perborate, 25% 1,2-ethylene glycol, 8% organic amine, and the balance of propionic acid, propionic ester and water complex.

[0011] The freezing point of this plastic cleaning agent is less than -15℃, and it is suitable for use in high-altitude cold areas in the north.

[0012] After the use of the plastic cleaning agent, the effective content can still reach 35-45%, and after the mechanical impurities are removed by stratification, it can be directly recycled and reused. "However, the above technical solution has no effect of removing yellowing, and the treatment effect on adhesives is general, which can be found by testing under the same conditions as the present application. Summary of the invention

[0013] 1. Problems to be solved

[0014] In view of the problems existing in the above-mentioned prior art, the present invention provides a care auxiliary agent and a preparation method thereof, which can solve the yellowing problem of the surface of plastics such as ABS on the one hand, and also have good glue removal performance on the other hand.

[0015] 2. Technical solution

[0016] To solve the above problems, the present invention adopts the following technical solutions.

[0017] A care auxiliary agent, comprising the following raw materials in parts by weight:

[0018] Sodium percarbonate 40-60 parts,

[0019] 30-50 parts of fatty alcohol polyoxyethylene ether,

[0020] Propylene glycol 80-120 parts,

[0021] Coconut oil diethanolamide 5-15 parts,

[0022] 20-40 parts of ethylene glycol tert-butyl ether,

[0023] Polyvinyl alcohol 10-30 parts,

[0024] 15-30 parts of polyether modified polysiloxane.

[0025] The above-mentioned care aid,

[0026] In parts by weight, the following raw materials are included:

[0027] Sodium percarbonate 45-55 parts,

[0028] 35-45 parts of fatty alcohol polyoxyethylene ether,

[0029] Propylene glycol 85-110 parts,

[0030] Coconut oil diethanolamide 8-12 parts,

[0031] 25-35 parts of ethylene glycol tert-butyl ether,

[0032] Polyvinyl alcohol 15-25 parts,

[0033] 15-30 parts of polyether modified polysiloxane.

[0034] The above-mentioned care aid,

[0035] In parts by weight, the following raw materials are included:

[0036] Sodium percarbonate 48-53 parts,

[0037] Fatty alcohol polyoxyethylene ether 37-42 parts,

[0038]

[0039] The above-mentioned care aid,

[0040] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0041] The particle size of the sodium percarbonate is 2000 mesh;

[0042] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0043] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0044] The above-mentioned care aid,

[0045] The CAS number of the propylene glycol is 57-55-6;

[0046] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0047] The above-mentioned care aid,

[0048] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0049] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0050] The above-mentioned care aid,

[0051] The polyether modified polysiloxane is purchased from Guangdong Biaomei Silicon Fluorine New Materials Co., Ltd. or obtained by the following preparation method;

[0052] The preparation method of the polyether-modified polysiloxane is as follows:

[0053] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0054] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0055] A method for preparing a nursing auxiliary comprises the following steps:

[0056] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0057] 3. Beneficial effects

[0058] Compared with the prior art, the present invention has the following beneficial effects:

[0059] The biggest innovation of this application is the secondary optimization and improvement based on the traditional commercial polyether-modified polysiloxane. It has a good removal effect on the adhesives of common self-adhesive stickers, and can effectively improve the yellowing phenomenon of the plastic surface. At present, there are few effective plastic yellowing removers that can simultaneously remove yellowing and adhesives, and some plastic yellowing removers usually directly remove a layer of the surface structure of the plastic, causing damage to the plastic surface; but in this application, polyether-modified polysiloxane may participate in the in-situ reduction of the yellowing plastic material group, thereby effectively reducing the yellowing phenomenon. In addition, sodium percarbonate also has a good oxidation effect, which assists in deepening the removal of residual adhesives on the plastic surface, and fatty alcohol polyoxyethylene ether or coconut oil diethanolamide plays an effective emulsifying role, which plays a role in reducing the surface tension performance of the entire additive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is an application implementation diagram of the product prepared in Example 6. DETAILED DESCRIPTION

[0061] The present invention is further described below in conjunction with specific embodiments.

[0062] Example 1

[0063] The care additives, in parts by weight, include the following raw materials:

[0064]

[0065] The above-mentioned care aid,

[0066] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0067] The particle size of the sodium percarbonate is 2000 mesh;

[0068] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0069] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0070] The above-mentioned care aid,

[0071] The CAS number of the propylene glycol is 57-55-6;

[0072] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0073] The above-mentioned care aid,

[0074] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0075] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0076] The above-mentioned care aid,

[0077] The polyether-modified polysiloxane is obtained by the following preparation method:

[0078] The preparation method of the polyether-modified polysiloxane is as follows:

[0079] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0080] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0081] The preparation method of the nursing auxiliary agent comprises the following steps:

[0082] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0083] Example 2

[0084] The care additives, in parts by weight, include the following raw materials:

[0085]

[0086] The above-mentioned care aid,

[0087] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0088] The particle size of the sodium percarbonate is 2000 mesh;

[0089] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0090] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0091] The above-mentioned care aid,

[0092] The CAS number of the propylene glycol is 57-55-6;

[0093] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0094] The above-mentioned care aid,

[0095] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0096] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0097] The above-mentioned care aid,

[0098] The polyether-modified polysiloxane is obtained by the following preparation method:

[0099] The preparation method of the polyether-modified polysiloxane is as follows:

[0100] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0101] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0102] The preparation method of the nursing auxiliary agent comprises the following steps:

[0103] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0104] Example 3

[0105] The care additives, in parts by weight, include the following raw materials:

[0106]

[0107] The above-mentioned care aid,

[0108] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0109] The particle size of the sodium percarbonate is 2000 mesh;

[0110] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0111] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0112] The above-mentioned care aid,

[0113] The CAS number of the propylene glycol is 57-55-6;

[0114] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0115] The above-mentioned care aid,

[0116] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0117] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0118] The above-mentioned care aid,

[0119] The polyether-modified polysiloxane is obtained by the following preparation method:

[0120] The preparation method of the polyether-modified polysiloxane is as follows:

[0121] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0122] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0123] The preparation method of the nursing auxiliary agent comprises the following steps:

[0124] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0125] Example 4

[0126] The care additives, in parts by weight, include the following raw materials:

[0127]

[0128] The above-mentioned care aid,

[0129] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0130] The particle size of the sodium percarbonate is 2000 mesh;

[0131] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0132] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0133] The above-mentioned care aid,

[0134] The CAS number of the propylene glycol is 57-55-6;

[0135] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0136] The above-mentioned care aid,

[0137] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0138] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0139] The above-mentioned care aid,

[0140] The polyether-modified polysiloxane is obtained by the following preparation method:

[0141] The preparation method of the polyether-modified polysiloxane is as follows:

[0142] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0143] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0144] The preparation method of the nursing auxiliary agent comprises the following steps:

[0145] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0146] Example 5

[0147] The care additives, in parts by weight, include the following raw materials:

[0148]

[0149] The above-mentioned care aid,

[0150] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0151] The particle size of the sodium percarbonate is 2000 mesh;

[0152] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0153] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0154] The above-mentioned care aid,

[0155] The CAS number of the propylene glycol is 57-55-6;

[0156] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0157] The above-mentioned care aid,

[0158] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0159] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0160] The above-mentioned care aid,

[0161] The polyether-modified polysiloxane is obtained by the following preparation method:

[0162] The preparation method of the polyether-modified polysiloxane is as follows:

[0163] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0164] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0165] The preparation method of the nursing auxiliary agent comprises the following steps:

[0166] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0167] Example 6

[0168] The care additives, in parts by weight, include the following raw materials:

[0169]

[0170] The above-mentioned care aid,

[0171] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0172] The particle size of the sodium percarbonate is 2000 mesh;

[0173] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0174] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0175] The above-mentioned care aid,

[0176] The CAS number of the propylene glycol is 57-55-6;

[0177] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0178] The above-mentioned care aid,

[0179] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0180] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0181] The above-mentioned care aid,

[0182] The polyether-modified polysiloxane is obtained by the following preparation method:

[0183] The preparation method of the polyether-modified polysiloxane is as follows:

[0184] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0185] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0186] The preparation method of the nursing auxiliary agent comprises the following steps:

[0187] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0188] Comparative Example 1

[0189] The care additives, in parts by weight, include the following raw materials:

[0190]

[0191] The above-mentioned care aid,

[0192] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0193] The above-mentioned care aid,

[0194] The CAS number of the propylene glycol is 57-55-6;

[0195] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0196] The above-mentioned care aid,

[0197] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0198] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0199] The above-mentioned care aid,

[0200] The polyether modified polysiloxane is purchased from Guangdong Biaomei Silicon Fluorine New Materials Co., Ltd. or obtained by the following preparation method;

[0201] The preparation method of the polyether-modified polysiloxane is as follows:

[0202] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0203] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0204] The preparation method of the nursing auxiliary agent comprises the following steps:

[0205] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0206] Comparative Example 2

[0207] The care additives, in parts by weight, include the following raw materials:

[0208]

[0209] The above-mentioned care aid,

[0210] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0211] The particle size of the sodium percarbonate is 2000 mesh;

[0212] The moisture content of the storage environment of the sodium percarbonate is less than 20%.

[0213] The above-mentioned care aid,

[0214] The CAS number of the propylene glycol is 57-55-6;

[0215] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0216] The above-mentioned care aid,

[0217] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0218] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0219] The above-mentioned care aid,

[0220] The polyether modified polysiloxane is purchased from Guangdong Biaomei Silicon Fluorine New Materials Co., Ltd. or obtained by the following preparation method;

[0221] The preparation method of the polyether-modified polysiloxane is as follows:

[0222] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0223] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0224] The preparation method of the nursing auxiliary agent comprises the following steps:

[0225] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0226] Comparative Example 3

[0227] The care additives, in parts by weight, include the following raw materials:

[0228]

[0229] The above-mentioned care aid,

[0230] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0231] The particle size of the sodium percarbonate is 2000 mesh;

[0232] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0233] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0234] The above-mentioned care aid,

[0235] The CAS number of the propylene glycol is 57-55-6.

[0236] The above-mentioned care aid,

[0237] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0238] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0239] The above-mentioned care aid,

[0240] The polyether modified polysiloxane is purchased from Guangdong Biaomei Silicon Fluorine New Materials Co., Ltd. or obtained by the following preparation method;

[0241] The preparation method of the polyether-modified polysiloxane is as follows:

[0242] Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane;

[0243] Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

[0244] The preparation method of the nursing auxiliary agent comprises the following steps:

[0245] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0246] Comparative Example 4

[0247] The care additives, in parts by weight, include the following raw materials:

[0248]

[0249] The above-mentioned care aid,

[0250] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0251] The particle size of the sodium percarbonate is 2000 mesh;

[0252] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0253] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0254] The above-mentioned care aid,

[0255] The CAS number of the propylene glycol is 57-55-6;

[0256] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0257] The above-mentioned care aid,

[0258] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0259] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0260] The preparation method of the nursing auxiliary agent comprises the following steps:

[0261] Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

[0262] Comparative Example 5

[0263] The care additives, in parts by weight, include the following raw materials:

[0264]

[0265] The above-mentioned care aid,

[0266] The sodium percarbonate was purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with the product number of 1908219;

[0267] The particle size of the sodium percarbonate is 2000 mesh;

[0268] The moisture content of the storage environment of the sodium percarbonate is less than 20%;

[0269] The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

[0270] The above-mentioned care aid,

[0271] The CAS number of the propylene glycol is 57-55-6;

[0272] The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

[0273] The above-mentioned care aid,

[0274] The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903;

[0275] The average molecular weight of the polyvinyl alcohol is lower than 2000.

[0276] The above-mentioned care aid,

[0277] The polyether modified polysiloxane is purchased from Guangdong Biaomei Silicone Fluoride New Materials Co., Ltd.

[0278] Test plan:

[0279] The test was conducted with commonly used plastic shell material ABS, which is the inner shell of the air conditioner produced by Gree (at the same time, a self-adhesive sticker is placed on the surface of the shell in advance, with an area size of 20mm*50mm, specifically 3M 7533 type self-adhesive sticker). The care aids prepared in Examples 1-6 of the present application and the care aids prepared in Comparative Examples 1-5 were mixed with a conventional plastic cleaning agent (an aqueous solution of sodium dodecyl sulfate SDS, wherein the mass percentage of SDS is 10%) in a mass ratio of 1:8. After evenly shaking, the spraying was maintained vertically at a distance of 20cm to 30cm from the inner shell of the air conditioner, and plastic wrap was applied and exposed to the sun for 4h. Finally, the plastic wrap was removed and the surface was wiped with an auxiliary towel.

[0280] The grading method of the glue removal ability is as follows: there are 10 grades in total; the glue removal area accounts for 0-10% (including 10%) of the total area of ​​the original self-adhesive sticker as grade 1, 10-20% (including 20%) of the total area of ​​the original self-adhesive sticker as grade 2, and so on, accounting for 90-100% (including 100%) of the total area of ​​the original self-adhesive sticker as grade 10.

[0281] The corrosion test method is as follows: add about 2g of care additive that is not mixed with conventional plastic cleaning agent to the inner shell of the air conditioner, wait for 20 minutes, wipe it clean, and observe whether there is a pit at the location of the drop. If there is a slight pit, it is judged as slight corrosion. If there is an obvious pit, it is judged as obvious corrosion. If there is no pit, it is judged as no corrosion.

[0282] The sensory judgment method of odor is as follows: odors are divided into three levels: soft, general, and strong, and soft odors are preferred.

[0283] Table 1

[0284] Glue removal capability (level) Corrosive odor Example 1 8 none soft Example 2 9 none soft Example 3 9 none soft Example 4 9 none soft Example 5 10 none soft Example 6 10 none soft Comparative Example 1 7 none soft Comparative Example 2 7 none soft Comparative Example 3 7 none soft Comparative Example 4 5 Slight corrosion generally Comparative Example 5 6 Slight corrosion generally

[0285] As shown in Table 1, the care aids prepared in Examples 1-6 of the present application, after being mixed with conventional traditional plastic cleaning agents, have a degumming ability level between 8 and 10, and have strong degumming ability. At the same time, due to the modification treatment, the odor of each embodiment is relatively soft; at the same time, no corrosion occurs, indicating that after modification, the conventional polyether-modified polysiloxane has a certain corrosive effect. In addition, the comparative examples that remove sodium percarbonate, fatty alcohol polyoxyethylene ether or coconut oil diethanolamide all show a decrease in degumming ability. Then, according to the Q / GZL DM30-2019 enterprise standard for plastic yellowing removers, the products of Examples 1-6 and Comparative Examples 1-3 meet the above enterprise standards; as Figure 1 As shown, this is a diagram showing the effect of testing the care aid prepared in Example 6.

[0286] In general, the biggest innovation of this application is the secondary optimization and improvement based on the traditional commercial polyether-modified polysiloxane. It has a good removal effect on the adhesives of common self-adhesive stickers, and can effectively improve the yellowing phenomenon of the plastic surface. At present, there are few effective plastic yellowing removers that can simultaneously remove yellowing and adhesives, and some plastic yellowing removers usually directly remove a layer of the surface structure of the plastic, causing damage to the plastic surface; but in this application, polyether-modified polysiloxane may participate in the in-situ reduction of the yellowing plastic material group, thereby effectively reducing the yellowing phenomenon. In addition, sodium percarbonate also has a good oxidation effect, which assists in deepening the removal of residual adhesives on the plastic surface, and fatty alcohol polyoxyethylene ether or coconut oil diethanolamide plays an effective emulsifying role, which plays a role in reducing the surface tension performance of the entire additive system.

[0287] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A nursing aid, characterized in that: In parts by weight, the following raw materials are included: Sodium percarbonate 40-60 parts, 30-50 parts of fatty alcohol polyoxyethylene ether, Propylene glycol 80-120 parts, Coconut oil diethanolamide 5-15 parts, 20-40 parts of ethylene glycol tert-butyl ether, Polyvinyl alcohol 10-30 parts, 15-30 parts of polyether modified polysiloxane.

2. The nursing aid according to claim 1, characterized in that: In parts by weight, the following raw materials are included: Sodium percarbonate 45-55 parts, 35-45 parts of fatty alcohol polyoxyethylene ether, Propylene glycol 85-110 parts, Coconut oil diethanolamide 8-12 parts, 25-35 parts of ethylene glycol tert-butyl ether, Polyvinyl alcohol 15-25 parts, 15-30 parts of polyether modified polysiloxane.

3. The nursing aid according to claim 2, characterized in that: In parts by weight, the following raw materials are included: Sodium percarbonate 48-53 parts, Fatty alcohol polyoxyethylene ether 37-42 parts, Propylene glycol 90-100 parts, Coconut oil diethanolamide 8-12 parts, 28-32 parts of ethylene glycol tert-butyl ether, Polyvinyl alcohol 17-23 parts, 18-26 parts of polyether-modified polysiloxane.

4. The nursing aid according to claim 3, characterized in that: The sodium percarbonate is purchased from Zhejiang Jinke Daily Chemical Raw Materials Co., Ltd., with a product number of 1908219; the particle size of the sodium percarbonate is 2000 mesh; The moisture content of the storage environment of the sodium percarbonate is less than 20%; The fatty alcohol polyoxyethylene ether was purchased from Guangzhou Zhongwo New Materials Co., Ltd., with a CAS number of 68131-39-5 and an average molecular weight range of 575-605.

5. The nursing aid according to claim 3, characterized in that: The CAS number of the propylene glycol is 57-55-6; The coconut oleic acid diethanolamide is purchased from Shandong Xinquansheng Chemical Technology Co., Ltd., and its purity is 99%.

6. The nursing aid according to claim 3, characterized in that: The ethylene glycol tert-butyl ether was purchased from Shandong Jinen New Materials Co., Ltd., and its average relative density was 0.903; The average molecular weight of the polyvinyl alcohol is lower than 2000.

7. The nursing aid according to claim 3, characterized in that: The polyether modified polysiloxane is purchased from Guangdong Biaomei Silicon Fluorine New Materials Co., Ltd. or obtained by the following preparation method; The preparation method of the polyether-modified polysiloxane is as follows: Prepare hydrogen-containing silicone oil, polyether and chloroplatinic acid catalyst, mix them, react at 180° C. for 6 hours, and then perform reduced pressure distillation at a vacuum degree of 0.095 MPa and 130° C. to obtain a preliminarily modified polyether polysiloxane; Then, the above-mentioned preliminary modified polyether polysiloxane is mixed with allyl alcohol in a mass ratio of 1:2, and potassium hydroxide catalyst is added. The reaction temperature is controlled at 160°C. After reacting for 2 hours, phosphoric acid is used for neutralization, and then methyl chloride is added for end-capping reaction, and then the same mass of polyoxyethylene sorbitan stearate is added for emulsification.

8. A method for preparing a nursing auxiliary agent, characterized in that: The following steps are involved: Add the raw materials of the care aid into a sealed reactor in sequence, mix and stir for 20 minutes, then put it into a pressure tank and seal it.

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