Alkaline bottle cleaning agent and its preparation method and application

Abstract

This invention provides an alkaline bottle cleaner, its preparation method, and its application. The alkaline bottle cleaner comprises 16-22 wt.% sodium hydroxide, 47-66 wt.% sodium metasilicate pentahydrate, 3-6 wt.% dispersant, 8-12 wt.% alkyl glycoside quaternary ammonium salt, 4-8 wt.% ethylene glycol monophenyl ether, and 3-10 wt.% additives. This alkaline bottle cleaner has strong cleaning and decontamination capabilities, can peel off labels and markings in one piece, and does not affect the cleanliness and transparency of the bottle after cleaning. It produces no phosphates or carcinogens, meeting environmental protection requirements.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning agents, and in particular to an alkaline bottle cleaning agent and a preparation method and application thereof. Background Art

[0002] With the progress of society and the continuous improvement of people's living standards, beer has become an indispensable consumer product in daily life. In 2020, global beer sales were 187.698 million kiloliters. Among them, China's beer sales were 42.694 million kiloliters, accounting for 22.7% of global beer sales, making it the world's largest beer consumer. At present, in the production of bottled beer, except for a few breweries that use all new bottles, most other production companies use recycled bottles that have been cleaned and disinfected for filling. The bottle washing process has become one of the key processes in the beer production process, and the cleaning effect directly affects the quality and appearance of the beer products.

[0003] At present, most beer manufacturers use bottle washers to wash and recycle bottles. First, the bottle is inverted at the bottle inlet, and the liquid and debris in the bottle slide out of the bottle mouth and fall into the sewage tank, reducing the pollution and consumption of washing liquid in the subsequent process. Then, the bottle is sent to the pre-washing section for pre-rinsing inside and outside the bottle. The pre-rinsing water comes from the secondary circulating water and has a certain temperature of about 30-40°C. After pre-washing, the bottle moves with the bottle carrier and enters the washing liquid tank for continuous soaking. The effective alkali content of the washing liquid is generally 1-4% (calculated as sodium hydroxide content), the temperature is 75-85°C, and the soaking time is 7-15 minutes. The dirt inside and outside the bottle is fully softened and reacted here. After soaking, the bottle is rinsed multiple times with circulating water. The washed bottle is fully drained and finally automatically output by the bottle unloading device.

[0004] The cleaning agent for glass recycling bottles generally uses sodium hydroxide, bottle washing agent or sodium hydroxide + bottle washing additive. Bottle washing agent is composed of sodium hydroxide, chelating agent, dispersant, surfactant, defoaming agent, etc. Some manufacturers will add oxidants to improve the decontamination effect. Bottle washing additives are generally composed of chelating agents, dispersants, surfactants, defoaming agents, etc., and need to be used in conjunction with sodium hydroxide to achieve a better decontamination effect.

[0005] For example, CN1115401C discloses a detergent composed of a nonionic surfactant and a variety of inorganic salt raw materials, which includes 30-50wt.% sodium hydroxide, 10-30wt.% trisodium phosphate, 1-10wt.% sodium tripolyphosphate, 1-10wt.% sodium pyrophosphate, 5-15wt.% anhydrous sodium sulfate, 10-20wt.% sodium metasilicate nonahydrate and 1-10wt.% ionic surfactant. Among them, the nonionic surfactant is polyether fatty acid ester and fatty alcohol polyoxyethylene ether. CN106350265A discloses an industrial cleaning agent for recycling old bottles of beer and beverages, which includes 1-5wt.% alkylphenol polyoxyethylene ether, 5-10wt.% sodium gluconate, 15-40wt.% sodium tripolyphosphate, 10-20wt.% sodium carbonate, 5-10wt.% sodium silicate and 2-6wt.% penetrant, and the balance is sodium sulfate. CN108485839A discloses a bottle washing additive for removing mold, a preparation method and an application method thereof, wherein the additive comprises 40-85wt.% of sodium bicarbonate, 10-30wt.% of sodium percarbonate and 5-30wt.% of a chelating agent. Among them, the chelating agent is selected from sodium gluconate, sodium tripolyphosphate, disodium ethylenediaminetetraacetate, tetrasodium ethylenediaminetetraacetate, hydroxyethylidene diphosphonic acid and aminotrimethylenephosphonic acid. CN10846143A discloses a bottle washing additive and a preparation method thereof, wherein the additive comprises 8-15wt.% of sodium carbonate, 4-8wt.% of anhydrous sodium metasilicate, 60-78wt.% of a chelating agent and 10-17wt.% of a nonionic surfactant. Among them, the chelating agent is selected from one or more combinations of sodium tripolyphosphate, sodium gluconate, tetrasodium ethylenediaminetetraacetate and trisodium nitrilotriacetate. The nonionic surfactant is one or more combinations of low-foam nonionic surfactants Plurafac LF305, Genapol ED3060, and Pluronic PE6100. CN112745989A discloses a quick-acting beer bottle label removal cleaning additive, which includes 35-67wt.% of oxidant, 1.5-3.5wt.% of detergent conditioner, 0.3-0.5wt.% of chelating agent, 1.8-3.5wt.% of scale inhibitor, and 0.1-0.2wt.% of anionic surfactant. Among them, the oxidant includes sodium hypochlorite, trivalent cobalt salt, persulfate, peroxide, potassium dichromate, potassium permanganate, and chlorate.

[0006] However, the cleaning agents disclosed in the above patents all have certain defects during use. The cleaning agent disclosed in CN1115401C contains a large amount of phosphide, and the discharged cleaning waste liquid will cause eutrophication of water bodies. In addition, the non-ionic surfactants polyether fatty acid esters and fatty alcohol polyoxyethylene ethers used in the cleaning agent are high-foaming surfactants. When washing bottles, the spray tank nozzle will spray a large amount of foam, affecting the monitoring of the alkalinity of the washing liquid and the control of the washing tank liquid level. The alkylphenol polyoxyethylene ether used in the cleaning agent disclosed in CN106350265A has poor biodegradability, and the by-products during synthesis such as dioxane are carcinogenic. At present, many countries have restricted or banned its use. The bottle washing additive disclosed in CN108485839A also contains inorganic phosphorus or organic phosphine chelating agents, and when it is mixed with sodium hydroxide solution and used at 70-85°C, the oxidant component sodium percarbonate will quickly decompose completely, and it cannot play a decontamination role in the entire cleaning process. The low-foaming surfactants used in the bottle washing additive disclosed in CN10846143A are fatty alcohol alkoxy compounds (Plurafac LF305, Genapol ED3060) and PO-EO block polyether (Pluronic PE6100). These surfactants have low cloud points (<30°C). In the absence of solubilizing agents, the surfactants precipitate from the solution and float on the liquid surface under high temperature and alkaline conditions, and cannot reduce the surface tension of the cleaning liquid, resulting in poor cleaning effect of the cleaning agent. The oxidant used in the bottle washing additive disclosed in CN112745989A includes trivalent cobalt salts and potassium dichromate. During cleaning, the oxidant undergoes an oxidation-reduction reaction to generate heavy metal ions, which will increase the difficulty of sewage treatment of the cleaning waste liquid on the one hand, and on the other hand, greatly increase the possibility of excessive heavy metals in newly filled beer.

[0007] At the same time, sodium hydroxide at high temperature can easily corrode the trademark into fragments, which accumulate in the washing tank and are not easily removed by the label removal machine. The broken labels remaining in the tank are further treated by sodium hydroxide to form pulp, which is suspended in the washing liquid, making rinsing difficult, or is sucked into the cleaned glass bottles, causing floccules and suspended matter to appear in the beer, affecting the quality of the beer, or clogging the nozzle, greatly reducing the efficiency of the bottle washing machine. Sodium hydroxide at high temperature is chemically corrosive to glass bottles, which will cause the appearance of the bottle to be blurred and the bottle body to be dull after washing.

[0008] Therefore, it is necessary to develop an environmentally friendly, low-foaming bottle cleaning agent that can remove labels in one piece, does not corrode glass bottles, and is heat-resistant and alkali-resistant to solve the shortcomings of the existing technology. Summary of the invention

[0009] In view of the above problems, the purpose of the present invention is to provide an alkaline bottle cleaning agent and a preparation method and application thereof. The alkaline bottle cleaning agent has strong cleaning and decontamination capabilities, can peel off trademarks and labels in one piece, and does not affect the cleanliness and transparency of the bottle after cleaning. No phosphides and carcinogens are produced, which meets environmental protection requirements.

[0010] To achieve the above object, the present invention provides an alkaline bottle cleaning agent in a first aspect, comprising the following components:

[0011]

[0012] The alkaline bottle cleaning agent used in the present invention comprises sodium hydroxide, sodium metasilicate pentahydrate, a dispersant, an alkyl glycoside quaternary ammonium salt and ethylene glycol monophenyl ether, and has at least the following technical effects.

[0013] (1) Sodium hydroxide gives the cleaning solution a certain alkalinity, which improves the dirt removal effect while not corroding the glass bottles and labels. Sodium metasilicate pentahydrate can provide the alkalinity required for decontamination without corroding the glass bottles. It can also chelate metal ions such as calcium and magnesium in the water, preventing the metal ions from forming insoluble substances and depositing on the relevant parts of the bottle washing machine, thereby affecting heat and mass transfer, and preventing the metal ions from forming insoluble substances and depositing on the surface of the glass bottles, thereby affecting the cleaning effect. Dispersants can suspend the dirt washed off the glass bottles in the washing liquid and eventually drain it away with the washing liquid, thereby preventing the washed dirt from re-depositing.

[0014] (2) Alkyl glycoside quaternary ammonium salts are green, low in toxicity, low in irritation, and easily biodegradable. Their polyhydroxy structure makes them highly hydrophilic, resistant to acids, alkalis, and electrolytes, and they do not precipitate at high temperatures. Their quaternary ammonium salt structure enables them to kill bacteria and algae, and quickly remove mildew stains attached to glass bottles. The negative charge on the surface of glass bottles makes them easily adsorbed on solid surfaces. At the same time, through the modification of alkyl glycoside groups, the hydrophilicity of the hydrophobic chain is enhanced, the hydrophobicity of the glass surface is reduced, the wetting properties are enhanced, and the removal of dirt on the surface of the glass bottle is promoted.

[0015] (3) Ethylene glycol monophenyl ether can be used as a solvent for resins, coatings, adhesives, etc., but its solubility in water is very low. When alkaline bottle cleaning agent is added to the washing tank, alkyl glycoside quaternary ammonium salt forms micelles in the water body and solubilizes ethylene glycol monophenyl ether in the micelles. The electrostatic interaction between the glass bottle and the alkyl glycoside quaternary ammonium salt causes the micelles to be rapidly adsorbed on the glass surface. The trademark glue on the glass surface produces a similar miscibility with the ethylene glycol monophenyl ether in the alkyl glycoside quaternary ammonium salt micelles on the glass surface, which weakens the bonding force between the trademark glue and the glass. Finally, under the action of mechanical force, the trademark detaches from the glass surface. On the one hand, traditional cationic surfactants have weak solubilization ability. On the other hand, when they are adsorbed on the glass surface through electrostatic action, the hydrophobic chain faces outward, the glass surface becomes hydrophobic, and the cleaning agent cannot wet the glass surface, resulting in a significant deterioration in the decontamination effect. Alkyl glycoside quaternary ammonium salt belongs to modified quaternary ammonium salt. When it is adsorbed on the glass surface by electrostatic action, a structure similar to nonionic surfactant is attached to the glass surface. Therefore, the glass surface can still be wetted and does not affect the removal of dirt. Therefore, the present invention uses ethylene glycol monophenyl ether and alkyl glycoside quaternary ammonium salt to compound glass bottles, which not only solves the dissolution problem of ethylene glycol monophenyl ether in water, but also can utilize its dissolving effect on glue to make the trademark on the glass bottle separate quickly from the bottle. The trademark falls off quickly and is taken out of the bottle washing machine by the label removal machine, thereby avoiding the problems such as the blockage of the spray pipe caused by the fragmentation of the trademark and the deposition of fibers in the bottle washing. And the glass surface keeps hydrophilicity, which promotes the removal of other dirt.

[0016] As a technical solution of the present invention, the dispersant includes sodium maleate acrylate copolymer.

[0017] As a technical solution of the present invention, the dispersant is CP5 powder of BASF Sokalan series with a molecular weight of 70,000.

[0018] As a technical solution of the present invention, the alkyl group in the alkyl glycoside quaternary ammonium salt is a C8-C10 straight-chain alkyl group.

[0019] As a technical solution of the present invention, the auxiliary agent includes 3 to 5 wt.% of a wetting agent, and the wetting agent is a C8-C10 fatty alcohol ethoxy propoxy polymer.

[0020] As a technical solution of the present invention, the wetting agent is Dow TritonTM DF-16.

[0021] As a technical solution of the present invention, the auxiliary agent includes 1 to 3 wt.% of a defoamer, and the defoamer is a modified organic polysiloxane.

[0022] A second aspect of the present invention provides a method for preparing an alkaline bottle cleaning agent, comprising the steps of:

[0023] (1) weighing the sodium hydroxide, the sodium metasilicate pentahydrate and the dispersant according to a formula ratio and mixing them to obtain a first mixture;

[0024] (2) weighing the alkyl glucoside quaternary ammonium salt, the ethylene glycol monophenyl ether and the auxiliary agent according to the formula ratio and mixing them to obtain a second mixture;

[0025] (3) The first mixture and the second mixture are mixed under stirring.

[0026] In the preparation method of the present invention, the raw materials are divided into two parts and mixed, especially the alkyl glycoside quaternary ammonium salt and ethylene glycol monophenyl ether are first mixed and then other components are added, which is conducive to solubilizing ethylene glycol monophenyl ether in other components under the action of the alkyl glycoside quaternary ammonium salt.

[0027] The third aspect of the present invention provides an application of an alkaline bottle cleaning agent, which can be used for stripping trademarks and labels, and can also be used for washing glass bottles. DETAILED DESCRIPTION

[0028] The alkaline bottle cleaning agent of the present invention has strong cleaning and decontamination capabilities, does not produce phosphides and carcinogens, meets environmental protection requirements, can be used as a cleaning agent for cleaning in various fields, and does not affect the neatness and transparency of the bottles after cleaning, and is particularly suitable for cleaning glass bottles. In addition, the alkaline bottle cleaning agent of the present invention can peel off trademarks and labels in one piece, and is particularly suitable for cleaning labels and trademarks on glass bottles. The alkaline bottle cleaning agent of the present invention can be used in a conventional washing machine, and the washing machine can be automatically stirred or manually stirred.

[0029] The alkaline bottle cleaning agent of the invention comprises 16-22 wt.% of sodium hydroxide, 47-66 wt.% of sodium metasilicate pentahydrate, 3-6 wt.% of a dispersant, 8-12 wt.% of an alkyl glycoside quaternary ammonium salt, 4-8 wt.% of ethylene glycol monophenyl ether and 3-10 wt.% of an auxiliary agent.

[0030] Wherein, sodium hydroxide can be, but is not limited to, 16wt.%, 17wt.%, 18wt.%, 19wt.%, 20wt.%, 21wt.%, 22wt.%. Sodium metasilicate pentahydrate can be, but is not limited to, 47wt.%, 48wt.%, 49wt.%, 50wt.%, 51wt.%, 52wt.%, 53wt.%, 54wt.%, 55wt.%, 56wt.%, 57wt.%, 58wt.%, 59wt.%, 60wt.%, 61wt.%, 62wt.%, 63wt.%, 64wt.%, 65wt.%, 66wt.%.

[0031] The dispersant may be, but is not limited to, 3wt.%, 4wt.%, 5wt.%, 6wt.%. The dispersant includes sodium maleate acrylate copolymer. The dispersant is CP5 powder of BASF Sokalan series with a molecular weight of 70,000.

[0032] The alkyl glycoside quaternary ammonium salt may be, but is not limited to, 8wt.%, 9wt.%, 10wt.%, 11wt.%, 12wt.%. Preferably, the alkyl group in the alkyl glycoside quaternary ammonium salt is C8-C 10 The content of ethylene glycol monophenyl ether can be, but is not limited to, 4wt.%, 5wt.%, 6wt.%, 7wt.%, and 8wt.%.

[0033] The additive may be, but is not limited to, 3wt.%, 4wt.%, 5wt.%, 6wt.%, 7wt.%, 8wt.%, 9wt.%, 10wt.%. Preferably, the additive includes 3-5wt.% of a wetting agent. For example, the wetting agent may be, but is not limited to, 3wt.%, 3.5wt.%, 4wt.%, 4.5wt.%, 5wt.%, and the wetting agent is C8-C 10 Fatty alcohol ethoxy propoxy polymer. More preferably, the wetting agent is Dow Triton TM DF-16. Fatty alcohol ethoxy propoxy polymer is used as a wetting agent, which is alkali-resistant, low-foaming, and has excellent wettability and permeability. It can improve the wettability of the cleaning liquid to dirt and promote the removal of dirt. Preferably, the auxiliary agent includes 1 to 3wt.% of a defoamer. As an example, the defoamer can be but is not limited to 1wt.%, 1.5wt.%, 2wt.%, 2.5wt.%, and 3wt.%. The defoamer is a modified organic polysiloxane. As a defoamer, the modified organic polysiloxane is alkali-resistant, heat-resistant, and shear-resistant. It can exert excellent defoaming and anti-foaming effects under cleaning conditions, and can ensure that the entire cleaning process is carried out under low foam or even no foam. In order to better illustrate the purpose, technical scheme and beneficial effects of the present invention, the present invention will be further described in conjunction with specific embodiments below. It should be noted that the following implementation method is a further explanation of the present invention and should not be used as a limitation of the present invention.

[0034] Example 1

[0035] This embodiment is an alkaline bottle cleaning agent, including 20wt.% sodium hydroxide, 54wt.% sodium metasilicate pentahydrate, 3wt.% CP5, 10wt.% C8 linear alkyl glycoside quaternary ammonium salt, 6wt.% ethylene glycol monophenyl ether, 4wt.% Dow Triton TM DF-16 and 3 wt.% of modified organopolysiloxane.

[0036] The preparation method thereof comprises:

[0037] (1) weighing sodium hydroxide, sodium metasilicate pentahydrate and CP5 according to a formula ratio and mixing them to obtain a first mixture;

[0038] (2) Weigh C8 linear alkyl glycoside quaternary ammonium salt, ethylene glycol monophenyl ether, and Dow Triton according to the formula ratio. TM DF-16 and modified organopolysiloxane are mixed to obtain a second mixture;

[0039] (3) The first mixture and the second mixture are mixed under stirring.

[0040] Example 2

[0041] This embodiment is an alkaline bottle cleaning agent, including 20wt.% sodium hydroxide, 58wt.% sodium metasilicate pentahydrate, 3wt.% CP5, 7wt.% C8 linear alkyl glycoside quaternary ammonium salt, 5wt.% ethylene glycol monophenyl ether, 4wt.% Dow Triton TM DF-16 and 3 wt.% of modified organopolysiloxane.

[0042] The preparation method thereof comprises:

[0043] (1) weighing sodium hydroxide, sodium metasilicate pentahydrate and CP5 according to a formula ratio and mixing them to obtain a first mixture;

[0044] (2) Weigh C8 linear alkyl glycoside quaternary ammonium salt, ethylene glycol monophenyl ether, and Dow Triton according to the formula ratio. TM DF-16 and modified organopolysiloxane are mixed to obtain a second mixture;

[0045] (3) The first mixture and the second mixture are mixed under stirring.

[0046] Example 3

[0047] This embodiment is an alkaline bottle cleaning agent, including 16wt.% sodium hydroxide, 63wt.% sodium metasilicate pentahydrate, 3wt.% CP5, 7wt.% C8 linear alkyl glycoside quaternary ammonium salt, 5wt.% ethylene glycol monophenyl ether, 3wt.% Dow Triton TM DF-16 and 3 wt.% of modified organopolysiloxane.

[0048] The preparation method thereof comprises:

[0049] (1) weighing sodium hydroxide, sodium metasilicate pentahydrate and CP5 according to a formula ratio and mixing them to obtain a first mixture;

[0050] (2) Weigh C8 linear alkyl glycoside quaternary ammonium salt, ethylene glycol monophenyl ether, and Dow Triton according to the formula ratio. TM DF-16 and modified organopolysiloxane are mixed to obtain a second mixture;

[0051] (3) The first mixture and the second mixture are mixed under stirring.

[0052] Example 4

[0053] This embodiment is an alkaline bottle cleaning agent, including 22wt.% sodium hydroxide, 47wt.% sodium metasilicate pentahydrate, 3wt.% CP5, 12wt.% C8 linear alkyl glycoside quaternary ammonium salt, 8wt.% ethylene glycol monophenyl ether, 5wt.% Dow Triton TM DF-16 and 3 wt.% of modified organopolysiloxane.

[0054] The preparation method thereof comprises:

[0055] (1) weighing sodium hydroxide, sodium metasilicate pentahydrate and CP5 according to a formula ratio and mixing them to obtain a first mixture;

[0056] (2) Weigh C8 linear alkyl glycoside quaternary ammonium salt, ethylene glycol monophenyl ether, and Dow Triton according to the formula ratio. TM DF-16 and modified organopolysiloxane are mixed to obtain a second mixture;

[0057] (3) The first mixture and the second mixture are mixed under stirring.

[0058] Example 5

[0059] This embodiment is an alkaline bottle cleaning agent, including 20wt.% sodium hydroxide, 54wt.% sodium metasilicate pentahydrate, 3wt.% CP5, 10wt.% C 10 Linear alkyl glycoside quaternary ammonium salt, 6wt.% ethylene glycol monophenyl ether, 6wt.% Dow Triton TM DF-16 and 1 wt.% of modified organopolysiloxane.

[0060] The preparation method thereof comprises:

[0061] (1) weighing sodium hydroxide, sodium metasilicate pentahydrate and CP5 according to a formula ratio and mixing them to obtain a first mixture;

[0062] (2) Weigh C8 linear alkyl glycoside quaternary ammonium salt, ethylene glycol monophenyl ether, and Dow Triton according to the formula ratio. TM DF-16 and modified organopolysiloxane are mixed to obtain a second mixture;

[0063] (3) The first mixture and the second mixture are mixed under stirring.

[0064] Comparative Example 1

[0065] This embodiment is an alkaline bottle cleaning agent, including 20wt.% sodium hydroxide, 60wt.% sodium metasilicate pentahydrate, 3wt.% CP5, 10wt.% C8 straight chain alkyl glycoside quaternary ammonium salt, 4wt.% Dow Triton TM DF-16 and 3 wt.% of modified organopolysiloxane.

[0066] The preparation method thereof comprises:

[0067] (1) weighing sodium hydroxide, sodium metasilicate pentahydrate and CP5 according to a formula ratio and mixing them to obtain a first mixture;

[0068] (2) Weigh C8 linear alkyl glycoside quaternary ammonium salt and Dow Triton according to the formula ratio. TM DF-16 and modified organopolysiloxane are mixed to obtain a second mixture;

[0069] (3) The first mixture and the second mixture are mixed under stirring.

[0070] Comparative Example 2

[0071] This embodiment is an alkaline bottle cleaning agent, including 20wt.% sodium hydroxide, 64wt.% sodium metasilicate pentahydrate, 3wt.% CP5, 6wt.% ethylene glycol monophenyl ether, 4wt.% Dow Triton TM DF-16 and 3 wt.% of modified organopolysiloxane.

[0072] The preparation method thereof comprises:

[0073] (1) weighing sodium hydroxide, sodium metasilicate pentahydrate and CP5 according to a formula ratio and mixing them to obtain a first mixture;

[0074] (2) Weigh ethylene glycol monophenyl ether and Dow Triton according to the formula ratio. TM DF-16 and modified organopolysiloxane are mixed to obtain a second mixture;

[0075] (3) The first mixture and the second mixture are mixed under stirring.

[0076] The alkaline bottle cleaning agents of Examples 1 to 5 and Comparative Examples 1 to 2 were tested for detergency. The test process is as follows and the test results are shown in Table 1.

[0077] Decontamination test: First, soak the glass bottle in 35℃ clean water for 2 minutes, then place it in 80℃ cleaning solution for 12 minutes, then soak it in 55℃ clean water for 1 minute, and finally dry it to observe the removal of dirt and trademarks from the glass bottle. The cleaning solution is prepared by diluting various alkaline bottle cleaning agents with tap water, and the concentration of the alkaline bottle cleaning agent is 3%.

[0078] Table 1 The stain test results of each alkaline bottle cleaning agent

[0079]

[0080] Note: Label removal time refers to the time from when the glass bottle is immersed in the cleaning solution to when the label completely falls off the surface of the glass bottle.

[0081] The foam properties of the alkaline bottle cleaning agents of Examples 1 to 5 and Comparative Examples 1 to 2 were measured using a Roche foam tester. The test results are shown in Table 2.

[0082] Table 2 The stain test results of each alkaline bottle cleaning agent

[0083]

[0084] From the results of Table 1 and Table 2, it can be seen that after the alkaline bottle cleaning agent used in the present invention is compounded with alkyl glycoside quaternary ammonium salt and ethylene glycol monophenyl ether, the label removal is fast, the label integrity is high, there is no glue mark, the glass bottle is clean and transparent after cleaning, and the foam stability is better.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it is not limited to those listed in the embodiments. Those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An alkaline bottle cleaning agent, characterized in that: Including components: The auxiliary agent includes 3-5 wt.% of a wetting agent or 1-3 wt.% of a defoaming agent.

2. The alkaline bottle cleaning agent according to claim 1, characterized in that The dispersant includes sodium maleate acrylate copolymer.

3. The alkaline bottle cleaning agent according to claim 2, characterized in that The dispersant is CP5 powder of BASF Sokalan series with a molecular weight of 70,000.

4. The alkaline bottle cleaning agent according to claim 1, characterized in that The alkyl group in the quaternary ammonium salt of alkyl glycoside is C8-C 10 of a straight chain alkyl group.

5. The alkaline bottle cleaning agent according to claim 1, characterized in that The wetting agent is C8-C 10 Fatty alcohol ethoxylated propoxylated polymers.

6. The alkaline bottle cleaning agent according to claim 5, characterized in that The wetting agent is Dow Triton TM DF-16.

7. The alkaline bottle cleaning agent according to claim 1, characterized in that The defoaming agent is modified organic polysiloxane.

8. The method for preparing the alkaline bottle cleaning agent according to any one of claims 1 to 7, characterized in that: Includes steps: (1) weighing the sodium hydroxide, the sodium metasilicate pentahydrate and the dispersant according to a formula ratio and mixing them to obtain a first mixture; (2) weighing the alkyl glucoside quaternary ammonium salt, the ethylene glycol monophenyl ether and the auxiliary agent according to the formula ratio and mixing them to obtain a second mixture; (3) The first mixture and the second mixture are mixed under stirring.

9. Use of the alkaline bottle cleaning agent according to any one of claims 1 to 7 or the alkaline bottle cleaning agent prepared by the preparation method of the alkaline bottle cleaning agent according to claim 8 in stripping trademarks and labels.

10. Use of the alkaline bottle cleaning agent prepared by the alkaline bottle cleaning agent according to any one of claims 1 to 7 or the preparation method of the alkaline bottle cleaning agent according to claim 8 in washing glass bottles.

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