LV15032B - Nonaqueous maintenance composition for transport vehicle - Google Patents

Description

DESCRIPTION OF THE INVENTION

Technical field

The present invention relates to a detergent and cleaning agent useful for washing and waxing the exterior surface of a painted metal of a vehicle. In particular, the present invention relates to a cleaning agent which cleans the surface of a vehicle while simultaneously coating the surface of the vehicle with detergent-resistant wax, completely removing the biological material and disinfecting the surface to be cleaned.

State of the art

The use of a wide variety of detergent and surfactant compositions for vehicle care and washing is a daily necessity in today's society. The need for vehicle cleaning is determined not only by aesthetic needs but also by safety considerations, the desire to extend vehicle body life and the need for vehicle surface waxing and polishing, which in turn affects not only the appearance of vehicles but also its aerodynamic properties and handling. Body washing and waxing are usually separate processes: first they need to be washed, including moistening, surfactant solution treatment and rinsing with a significant amount of water, and only after drying is waxing and polishing. This makes vehicle washing a long-term, multi-step process which, in addition, has significant negative effects on the environment associated with waste water containing surfactants, grease, tar and other harmful impurities resulting from this activity. Therefore, there are obvious benefits to using combined (washing and waxing) vehicle care products. Another disadvantage of traditional detergent formulations is the lack of a wax coating to protect the paint surface from scratches caused by abrasive soiling during the washing process. Water hardness and frozen oil and tar containing dirt can significantly reduce the efficiency of conventional vehicle washing processes and increase the amount of waste water generated. The essence of the proposed improvement is to reduce water consumption and hence the environmental impact of the vehicle bodywork process.

The composition of dirt deposited on vehicle surfaces can vary widely, depending on the type of road surface, the type and size of the vehicle, the climatic conditions and the use of the vehicle. Most of the dirt layer consists of insoluble, inorganic, mineral substances (clay particles, quartz grains, iron oxides, volcanic dust particles, etc.), soluble inorganic substances (sodium chloride, potassium chloride, magnesium salts, etc.), fuels, , tars, tire breakdown products and other substances present in the environment. Biological material, which settles on the surface of vehicles from the atmosphere, roads, animals, people in contact with transport and other processes [1], also forms a significant part of body contamination, which includes bacteria, viruses, fragments of viral membranes, DNA, cysts, toxins and other organic substances resulting from biological activity of living organisms [2] In view of the growing threat of regional epidemics, global pandemics, biological terrorism and other such threats, biosecurity becomes a necessity that requires new solutions, also in vehicle maintenance. The maintenance of public transport, emergency services and army vehicles are of particular importance to biosafety. When designing vehicle care compositions, the goal of preventing biological material sedimentation is usually not highlighted, and this problem is not currently recognized.

Several solutions have been developed for simultaneous body washing and waxing without the formation of sewage. They are mainly based on biphasic systems where the anhydrous phase consists of a highly hydrophobic substance such as paraffin oil, polysiloxane, their mixture with organohalogenated compounds and the like, while the aqueous phase contains a water-soluble organic solvent (eg lower alcohol, ketone, etc.) and a cation. , and / or anionic surfactants.

A composition comprising a surfactant (sodium lauryl sulfate), isopropyl alcohol (15%), water (50%) and paraffin and a pesticide (toxaphene) [3] is also known, as well as a composition consisting of modified silicone, a cationic emulsifier and a dispersant. [4]. Anhydrous spray compositions comprising polysiloxane and acrylic polymer [5] and biodegradable surfactant spray formulations [6] are also known. However, the known compositions do not completely eliminate the damage caused by abrasive soiling components in the washing process, nor do they ensure complete removal of biological material and disinfection of the surface to be cleaned.

Revelation of the Invention

The object of the invention is to improve anhydrous cleaning by reducing the negative impact of abrasive particles on the surface to be cleaned and increasing the biosafety of the cleaned surfaces, as well as its use with the proposed composition for simultaneously cleaning and waxing vehicle surfaces. The proposed composition and the way it is used do not require the cleaning surface to be rinsed with water and therefore it is considered a water saving technology. The invention also encompasses application technology, including surface treatment, which provides high cleaning, waxing and disinfection efficiency and reduces detergent consumption, as well as the complete removal of biological material and long-term disinfection of the surface to be treated.

The object of the invention is achieved by the use of anhydrous vehicle cleaning composition and its application. The proposed composition comprises a combination of two homogeneous mixtures, one in the anhydrous and the other in the aqueous phase.

The proposed composition consists of the following components:

- Component A is a mixture of silicones comprising: a) a high to medium viscosity silicone fluid of 35.0 to 65.0% by weight, such as polydimethylsiloxane having a viscosity of 200-100000 cSt at 25 ° C; b) synthetic waxes, such as silicone waxes or natural waxes, such as kamauba or beeswax, from 0.5 to 5.0% by weight;

- Component B is a mixture of nonionic and anionic surfactants in the range of 25.0% to 60% by weight, wherein (a) the nonionic surfactant is a mixture of nitrogen oxide-substituted amine oxide (N-oxide) and polyoxyethylene and long-chain alcohols, content from 1.0 to 20.0% by weight of surfactant; (b) The anionic surfactant is an alkyl derivative of benzylammonium containing 80 to 99% by weight of the surfactant.

- Component C is a water-soluble organic solvent of 3 to 10% by weight, which is any of the lower alcohols (mono- or di-substituted C ₂ -C 4), lower ketones (C ₃ -C 5) (e.g. acetone, methyl ethyl ketone or similar) or lower ethers in a mixture with lower carboxylic acids of from 2.0 to 5.0% by weight and water from 0 to 5.0% by weight.

If necessary, the composition may contain coloring and flavoring agents. The composition may be packaged in an aerosol, pumpable dispenser or other spray form.

Component A is a mixture of silicones consisting of an alkyl modified silicon polymer, such as polydimethylsiloxane, polydiethylsiloxane or other siloxane derivative, preferably polydimethylsiloxane (polydimethylsiloxane is an industrially manufactured oil having an optimum viscosity of 300 ° C to 500 ° C for its intended purpose). The use of alkylmodified silicon polymer in the cleaning process ensures the dissolution of tar and grease and the formation of a stable emulsion. The alkyl modified silicon polymer has a content of 35.0-65.0%, preferably 45.0%. The other component of Component A is synthetic or natural wax. The wax to be included in the composition may be wax of vegetable (e.g., kamauba), animal (e.g., bee), or synthetic (e.g., silicone) origin. Also, the composition described may include a combination of the waxes mentioned. Silicone wax can be a partially or fully methylated silicone derivative (for example, trimethylated silicone wax). Natural wax can be beeswax or kamauba wax, preferably in the form of anion wax emulsion. The wax content is 0.5-5%, preferably 2.5%.

A non-ionic surfactant in component B comprises a nitrogen atom-substituted amine oxide of formula (1) ΐ '

R 3 is N * Ό ^R 2 (1) wherein R ₁ and R ₂ are (C 1 -C 4) alkyl derivatives and R ₃ is (C 6 -C 18) alkyl derivatives.

The presence of amine oxide in the proposed composition provides a high surface activity and the ability to remove the specific dirt characteristic of vehicle surfaces, with minimal change in the pH composition, as well as the disinfectant properties of the proposed composition. The interaction of the amine oxide used with the surface to be cleaned after application of the product provides a stable antimicrobial effect.

The nonionic surfactant in component B also includes polyoxyethylene and long-chain alcohols of the formula (2)

CH ₃ (CH ₂ ) _n -O (CH ₂ CH ₂ O) _m H ₍₂₎ wherein n is from 3 to 8 and nr is from 2 to 20.

The presence of an alkylated higher alcohol oxide derivative in the composition provides a good interaction with the mineral as well as the organic constituents in the dirt, a good interaction with the other ingredients in the composition and the ability of the composition to interact with the biological material.

The anion-functional surfactant component of Component B contains an alkyl derivative of benzylammonium, preferably of formula (3)

0- ^!

(3) wherein R ₁ , R ₂ and R ₃ are (C 1 -C 6 alkyl) and X is -F ', Cl', Br 'or another strong inorganic acid salt.

Benzylammonium alkyl derivatives in the recommended anhydrous vehicle care composition provide high washing capacity of the surfactant mixture, as well as a strong interaction with living cell outer membranes and negatively charged, structurally and functionally relevant biomolecule moieties. Because anionic surfactant is particularly active against negatively charged particles (such as clay), it is less effective with respect to particles contaminated with tars, fats and other organic matter. Non-ionic surfactants, in turn, are more effective in removing tar particles, organic residues and similar substances. Consequently, each ingredient is considered to be less suitable for its intended purpose than the recommended combination. The surfactants in combination with the offered silicone blend provide good cleaning performance without excessive foaming.

The amount of component B in the composition is from 25.0 to 60.0% by weight, preferably 45.0% by weight. The combination of the above B component ingredients provides the disinfectant performance of the vehicle anhydrous care composition based on the individual properties of the substances described, as well as the synergistic interaction between non-ionic and anionic surfactants and the highly hydrophobic silicon organic compound (e.g., polydimethilsiloxane). reaction with cellular components such as cell membranes, DNA and functionally relevant proteins. The antimicrobial effect is achieved without the addition of pesticides or other highly toxic agents using only the described surfactant combination.

Component C is a water-soluble organic solvent of 0 to 20% by weight, lower carboxylic acids of 2.0 to 5.0% by weight and water of 0 to 10.0% by weight, in admixture with any of the lower alcohols (mono- or di-substituted C). ? - C ₄ ), lower ketones (C 3 - C 5) (e.g. acetone, methyl ethyl ketone or the like) or lower ethers. The lower carboxylic acids are formic acid, acetic acid, propionic acid and other carboxylic acids having a C atom number <4. The presence of the C component ensures good solubility of the surfactants.

The method of using the recommended composition is focused on the simultaneous cleaning and waxing of the vehicle's painted surfaces. The method includes: applying the recommended vehicle anhydrous vehicle spray and wiping the surface, preferably with a microfiber cloth, to a dry and bright condition.

It is recommended to use the described composition in aerosol or spray form.

The composition is suitable for aerosol or spray application of any construction. The use of a sprayer or aerosol is recommended for both pre-treatment and cleaning stages. However, it is also possible to apply the product in other ways: by using impregnated wipes, sponges or similar carriers suitable for applying the composition to the surface to be cleaned. Before use, the product described should be diluted with sufficient, preferably demineralized, water. The product is suitable for cleaning all parts of vehicles (passenger cars, motorcycles, heavy machinery, etc.) or specially contaminated vehicles. Vehicle contaminated with biological material can be treated like other vehicles, but in the case of extremely persistent contamination (such as blood), it is advisable to repeat the cleaning process. In cases where hazardous biological contamination of the surface to be treated is possible, personal protective equipment (gloves, goggles, respirators, bio-safety clothing) should be used. The recommended application of the product reduces the risk of contamination spreading due to the fact that no wastewater is formed during the cleaning process, but that all surface contaminants accumulate in the fabric used during the final cleaning stage, this material can be relatively easily disinfected or destroyed.

The described composition should be diluted 1: 8 to 20 with water before use, the recommended dilution being 1:10.

Examples of realization of the invention

To prepare the composition, component C is added to the mixer vessel, component B is added, and component A is finally added to the mix. The resulting mixture is stirred for about 30 minutes until uniformly mixed. To the resulting mixture of components C and B, component A is added and stirring is continued until a uniform emulsion is formed (approximately 30 minutes).

Example 1.

Place 4.5 kg (45%) of polydimethylsiloxane (viscosity 300-500 cSt at 25 ° C) in reactor 201 and add 200 g (2%) of trimethylated silicone wax with stirring. Stir for 2 hours to form a homogeneous mixture (component A). The reactor is then charged with 0.5 kg N, N-dimethyldodecylamine N-oxide, 1.8 kg tetraoxyethylene hexyl alcohol ether and 1.2 kg trimethylbenzylammonium chloride. Add 1 kg ethanol, 0.3 kg acetic acid, 500 ml water and stir for 0.5 hour. 10 kg of the finished composition are obtained.

Example 2.

One reactor is charged with 5.5 kg (55%) of polydimethylsiloxane (viscosity 10 00-50 000 cSt at 25 ° C) and 0.5 kg (0.5%) of kamauba wax is added with stirring. Stir for 5 hours to form a homogeneous mixture (component A). The reactor is then charged with 0.5 kg N, N-dimethyldodecylamine N-oxide, 2.5 kg trimethylbenzylammonium chloride. Add 0.8 kg isopropanol, 0.2 kg acetic acid and stir for 0.5 hour. 10 kg of the finished composition are obtained.

Example 3.

In reactor 1, place 4 kg of polydimethylsiloxane (viscosity 20 00-50 000 cSt at 25 ° C) and add 0.5 kg (0.5%) of beeswax with stirring. Stir for 2 hours until a homogeneous mixture is formed. The reactor is then charged with 1 kg of N, N-dimethyldodecylamine N-oxide, 1.3 kg of tetraoxyethylene hexyl alcohol ether. Add 0.8 kg ethanol, 0.2 kg acetic acid and stir for 0.5 hour. 10 kg of the finished composition are obtained.

The product obtained is composed of 2 phases, 1) (top) consists of component A and is transparent (UV sorption at 320 nm not exceeding 0.05 AU), with a specific gravity of 0.955-975 g / cm and a refractive index of 1.380-1.5; (2) (Bottom) is blue to bluish black with a specific odor, pH 5,1-5,5, with a particle content of less than 1,5 g / cm ³ and a refractive index of 1,25-1,4. The surfactant composition significantly reduces water surface tension (from 72 mN / m to <30 mN / m). The product is stored as a mixture of both mixtures in one container.

The surface treatment of vehicles with this composition, as described, results in the complete removal of bacteria, fungi, viruses as well as fragments and biologically active biomolecules. Surface antimicrobial activity assays show complete absence of microorganisms and antimicrobial activity both immediately after treatment and one week later. The disinfectant effect has been demonstrated using microorganisms: 1) Pseudomonas aeruginosa; 2) Staphylococcus aureus; 3) Candida albicans; 4) Aspergillus niger. Antimicrobial activity tests were performed using the agar diffusion method. The bacteria selected are both Gram positive and Gram negative and are widely distributed in soil and water. The inhibition of microbial development depends on the concentration of the preparation used and the type of micro-organism, but a minimum disinfectant effect is maintained for at least 3 days.

Quoted sources [1] Genuino H.C., Opembe N.N., Njagi E.C., McClain S., Suib S.L. (2012) A review of hydrofluoric acid and its use in the car wash industry. Journal of Industrial and Engineering Chemistry 18 1529-1539 [2] Calvo A.I., Alves C., Castro A., Pont V., Vicente A.M., Fraile R. (2013), Research on aerosol sources and chemical composition: Past, current and emerging issues. Atmospheric Research (120-121), 1-28 [3] Shahram G.R. 2008. Waterless carwash liquid composition and method for producing the same. US 7,552,737 [4] Howe M.W. 1996. Automotive protectant for use with cleaning compositions. US 5518533 [5] Serobian A. 2008. Sprayable dry wash and wax composition comprising a silicone blend and an acrylic-based polymer. US 7399738 [6] Schulz M.A., Joseph II F.W., Deddo M.A. 2011. Sprayable wash and wax composition.

Claims (5)

Claims 1. Anhydrous care product for simultaneous cleaning, waxing and disinfection of a vehicle's painted surface, comprising a silicone mixture, a surfactant, an organic solvent and water characterized in that the silicone mixture is a mixture of a silicone liquid and a synthetic or natural wax, the surfactant being nonionic and anionic surfactant, wherein the nonionic surfactant is a nitric substituted amine oxide (N-oxide) and a mixture of polyoxyethylene and ethers formed of long-chain alcohols and the anionic surfactant is a benzylammonium alkyl derivative, the compound contains: silicone liquid 35.0 -65.0 wax of synthetic or natural origin 0.5 - 5.0 surfactant (non-ionic and anionic) 25.0-60.0 organic solvent 3.0 - 20.0 water 0 -10.0 The agent of claim 1, wherein the silicone fluid is an alkyl-modified silicon polymer having a viscosity of 200-100000 cSt at 25 ° C. The agent of claim 2, wherein the alkyl-modified silicon polymer is polydimethylsiloxane. The agent according to any one of the preceding claims, wherein the natural wax is kamauba wax or beeswax. Agent according to any one of the preceding claims, wherein the synthetic wax is silicone wax. An agent according to any one of the preceding claims, wherein the nonionic surfactant is present in an amount of 1.0 to 20.0% by weight of the surfactant. The agent according to any one of the preceding claims, wherein the nonionic surfactant is a mixture of N, N-dimethyldodecylamine N-oxide and polyoxyethylene and ethers formed from long-chain carbon atoms. An agent according to any one of the preceding claims, wherein the anionic surfactant is present in an amount of 80.0 to 99.0% by weight of the surfactant. The agent according to any one of the preceding claims, wherein the water-soluble organic solvent is any of the lower alcohols (mono- or di-substituted ^ C ₄ ) or lower ketones (C 3 -C 5) in admixture with the lower carboxylic acids (mono 10 or di-1). substituted (C i - C ₄ ) with the lower carboxylic acid content being 2.0 to 5.0% by weight of the organic solvent. Agent according to any one of the preceding claims, characterized in that it is diluted 1: 8 to 20, preferably 1:10 with water. An impregnated napkin, cloth or sponge containing the agent according to any one of the preceding claims.