JPH02169680A - Polishing cleaner composition - Google Patents

Abstract

PURPOSE:To prepare a polishing cleaner compsn. capable of removing the soils and stains attached firmly or penetrated into a surface layer without degrading the appearance of a polished surface by compounding a cleaner base material with a grinding abrasive grain, boehmite or pseudoboehmite. CONSTITUTION:A polishing cleaner compsn. is obtd. by compounding a cleaner base material with a grinding abrasive grain, boehmite or pseudoboehmite. As said cleaner base material, which usually contains a solvent, water and a surfactant, a cleaner generally used for cleaning a coated surface, glass, etc., can be used. The amt. of boehmite or pseudoboehmite compounded is 0.5-10wt.% pref. 2-5wt.% based on the total compsn. Too low a content of boehmite or pseudoboehmite gives a practically insufficient cleaning power; too high a content creates disadvantages such as an increased apparent viscosity which makes taking-out from the container difficult, an inferior workability in wiping off, and an increased cost without giving any more improvement in the cleaning power.

Description

[Detailed description of the invention] [Industrial application field] The present invention is applicable to automobile bodies, building interior materials, furniture, kitchen appliances,
It relates to a polishing cleaner composition used for the purpose of removing dirt, polishing, and protecting painted surfaces such as home appliances, metals, glass, etc.

[Conventional technology]

Various compositions have been known for removing stains and polishing painted surfaces, etc., and the main ingredients, such as waxes and silicone oils, are dissolved in a solvent or dissolved and emulsified in water, depending on the blending ratio. It is used in solid, paste or liquid form.

For example, on the painted surfaces of automobiles, dust in the air, asphalt and coal tar scattered from paved roads, tarry soot on incomplete combustion residues from exhaust gas, and insoluble stones caused by hard water. Due to the adhesion of sulfur, etc., the painted surface becomes dirty, the hue deteriorates and the gloss disappears, and the dirt penetrates into the surface layer, forming colored or discolored stains and smudges. It is noticeable on the painted surfaces of light-colored cars, mainly white. Usually, the method of removing stains and polishing the painted surface is to remove adhered contaminants by physical methods such as washing with water or polishing with a brush, and then polishing with a wax-based polishing agent. However, the above-mentioned method is insufficient in its ability to remove tough stains such as oil stains that have penetrated into the interior of the painted surface.

On the other hand, by impregnating cloth, leather, sponge, etc. with a polishing cleaner containing abrasive grains that have an abrasive action and rubbing it on the painted surface, the painted surface is ground and the dirt that has penetrated into the interior is removed. A method of polishing is also used.

Such grinding abrasive grains usually have an average particle size of several tens to several hundred microns.
Silica, aluminum oxide, magnesium oxide, alumina silicate, etc. are used, but when using conventional polishing cleaners containing abrasive grains, the abrasive grains have abrasive action on the painted surface. If it is too strong, it may remove dirt and stains but may cause large or minute scratches on the painted surface, and the paint film will become thinner due to wear and tear with each use, causing the painted surface to lose its luster and luster. In particular, there were defects such as the metal substrate being exposed due to frequent use.

[Problem to be solved by the invention]

The present inventors investigated a polishing cleaner that can remove firmly adhered dirt and dirt that has penetrated into the surface layer without impairing the appearance of the surface to be treated, such as luster or shine. As a result, the present inventors developed a cleaner base. It has been discovered that when a specific abrasive grain component is blended, the desired purpose can be achieved.

[Means to solve the problem]

The gist of the present invention resides in a polishing cleaner composition comprising boehmite or pseudo-boehmite as an abrasive grain component added to a cleaner base.

The present invention will be explained in more detail below.

The cleaner base for the polishing cleaner composition of the present invention is not particularly limited as long as it is a cleaner that is generally used for cleaning painted surfaces, glass, etc., but it is usually a solvent,
Contains water and surfactant.

As a solvent, petroleum hydrocarbons such as mineral spirits and kerosene; aromatic hydrocarbons such as xylene and toluene;
Amines such as triethanolamine, triethylamine, monoethanolamine, and morpholine; Alcohols such as methanol, ethanol, and isopropyl alcohol;
Examples include organic solvents such as ethers such as ethyl cellosolve, propyl cellosolve, and dipropyl cellosolve, and these may be used alone or in combination of two or more.

Examples of surfactants include coconut oil fatty acids, amine salts of higher fatty acids such as stearic acid, oleic acid, and myristic acid, alkali metal salts such as sodium salts and potassium salts, polyoxyethylene higher alcohol ether sulfonates, and alkyl sulfates. Anionic surfactants such as ester salts and alkyl phosphate ester salts; Nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, and alkyl ether phosphate; 2-alkyl-N-carboxy Alkyl-N-
Examples include amphoteric surfactants such as hydroxyethylimidazolium betaine.

The blending proportions of the solvent, water, and surfactant vary depending on the properties of the intended polishing cleaner composition, but the amounts in the cleaner base consisting of these are within the following range.

Solvent = 1-50 wt% water
: 40-98 〃Surfactant 20,
1 to 5 The above cleaner base may further contain wax and/or silicone oil in order to improve gloss and waterproofness. In this case, in addition to cleaning the surface to be treated, it also protects the surface by forming a film. The gloss will also be maintained.

Waxes include vegetable waxes such as candelilla wax, wood wax, rice wax, and carnauba wax;
Examples include animal waxes such as beeswax, lanolin and spermaceti; mineral waxes such as montan wax and ceresin; and petroleum waxes such as paraffin wax and microcrystalline wax.

As the silicone oil, linear dimethylpolysiloxane is generally used, but methylphenylpolysiloxane, amino-modified silicone, cyclic silicone, etc. can also be used. These silicone oils usually have a viscosity of 0°65 to 1,000,000 cs at 25°C,
Preferably, one having a density of about 100 to 10,000 cs is used.

The blending ratio of each of the above components is generally in the following range for a cleaner base consisting of a solvent, a surfactant, a wax and/or a silicone oil.

Solvent: 1-50% water by weight
: 40-98 〃Surfactant
: 0.1-5 Wax O-10 Silicone oil: 0-10 The polishing cleaner composition of the present invention is preferably alkaline from the viewpoint of stain removal,
If the pH is too high, dirt will be removed, but the surface to be contaminated may be attacked by alkali and lose its luster. Also, there is a risk of skin irritation due to direct contact with the skin, so cleansing agent bases should not be used. The pH of is preferably 8 to 11. Therefore, ammonia is added to the cleaning agent base as a pH adjuster;
Caustic soda; organic amines such as triethanolamine, triethylamine, monoethanolamine, and morpholine;
Carbonates such as sodium carbonate and potassium carbonate; phosphates such as sodium tripolyphosphate, sodium birophosphate, and sodium tetraphosphate; sodium metasilicate, sodium orthosilicate,
At least one silicate such as sodium sesquisilicate may be added. The amount of these pHtli adjusters used is not particularly limited as long as the pH of the polishing cleaner falls within the above range.

In addition, the above cleaner base may further contain a thickener, if necessary.
It may contain appropriate antibacterial and antifungal agents, colorants, fragrances, and the like.

The present invention is characterized in that boehmite or pseudo-boehmite is blended into the cleaning agent base as an abrasive grain component.

Known grinding abrasive grain components include α-alumina, silica, etc., and a comparison of these known grinding abrasive grain components with boehmite, coagulated boehmite, gibbsite, gibbsite, etc. in terms of old Mohs' hardness is as follows. .

α-Alumina 9-8 Silica
7-6 boehmite or pseudo-boehmite
3-4 jib site, gibb site 2-3 stone
Boehmite or pseudo-boehmite has an intermediate hardness among various Ja-free abrasive grain components and exhibits a moderate grinding action.

Boehmite or pseudoboehmite is a type of alumina hydrate. Alumina hydrates include gibbsite, bialite, norstrandite, boehmite, pseudoboehmite, diasbore, etc., depending on the crystal form and degree of hydration.As mentioned above, in the cleaner wax composition of the present invention, boehmite or pseudoboehmite Containing boehmite is an essential requirement.

Boehmite or pseudo-boehmite is generally A/! 00H or A 1. It is a substance expressed by the chemical formula t○,・H,0, and is an aluminum organic compound (Ap (OR)) that is synthesized by pressurizing and hydrothermally treating gibbsite etc. at about 250°C or by the Ziegler method. 3) (where R is an alkyl group), it is generally produced by a method of producing by hydrolysis of alumina sol, ceramic binder,
It is an industrial material that is widely used as a raw material for textile products, antistatic treatment of carpets, cosmetics, ointment thickeners, alumina catalysts and catalyst supports, etc.

In an aqueous dispersion system, boehmite or pseudo-boehmite is partially fibrous and mostly amorphous particles, dispersed in micron order or submicron size, and forms a -species alumina sol. This sol has an isoelectric point of 9.4, and it is observed by electrophoresis that the particles themselves are positively charged.

In the polishing cleaner composition of the present invention, the content of boehmite or pseudoboehmite is 0.5 to 10% of the total amount of the composition.
% by weight, preferably 2-5% by weight.

If this content is too low, the stain removal performance will be insufficient for practical purposes, and if it is too high, the stain removal performance will not improve and the apparent viscosity will increase, making it difficult to remove from the container. Disadvantages arise, such as poor wiping properties and increased costs.

The polishing cleaner composition of the present invention is not particularly limited in its properties as long as it contains boehmite or pseudo-boehmite as an abrasive component, and may be semi-solid or paste-like, emulzidine or cream-like. It may be either solid or liquid. In particular, when the purpose is to clean and polish painted surfaces of automobiles, O/W type emulsifiers are preferably used. In this case, the solvent is mineral spirit, petroleum hydrocarbon such as kerosene, and the surfactant is the anionic surfactant mentioned above,
Nonionic surfactants with HLB 4 to 16 are used as waxes, such as carnauba wax, montan wax, paraffin wax, etc. As the silicone oil, dimethylpolysiloxane, amino-modified silicone, etc. are preferably used. The preferred blending ratio of the cleaner base in the automotive polish cleaner composition is as follows.

Solvent: 7-40% water by weight
: 50-90 〃Surfactant 20.1-5 〃Wax
1~5 〃Silicone oil = 1~5 〃
In this case as well, as described above, a pH adjuster, a thickener, an antibacterial and antifungal agent, a coloring agent, a fragrance, etc. may be included as necessary.

The polishing cleaner composition according to the present invention is mainly intended to remove dirt from resinous painted surfaces, smoothen the surfaces by grinding, and improve gloss. Depending on the degree of grinding, abrasive ingredients such as alumina, silica, alumina silicate, etc. may be used in combination to enhance the grindability.

The polishing cleaner composition of the present invention can be prepared by, for example, simply mixing each component in a predetermined ratio until the temperature reaches below normal temperature, or by further raising the temperature slightly, depending on its components, blending ratio, and desired properties. This can be carried out by mixing, heating, melting, and solidifying. There is no particular restriction on the order in which the components are mixed, and they may be added at the same time or sequentially and mixed, and various stirring devices commonly used in this field may be used to mix the components.

〔Example〕

EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to examples, but the present invention is not limited in any way by the following examples.

Examples 1 to 3 and Comparative Examples 1 to 3 <Preparation of polish cleaner composition> For each example and comparative example, each component was blended in the proportions shown in Table 1 to prepare a polish cleaner composition. .

The preparation was carried out as follows. That is, components 1 to 5 are dissolved by heating (this solution is referred to as A), while components 6 to 5 are dissolved by heating.
9 was dissolved by heating (this solution is referred to as B), and B was added to A little by little while stirring at high speed. After adding the entire amount, component fish 10 to 12 and component magnets 13 to 14 were added while stirring and cooling to obtain the target product.

Evaluation Test> Each of the polishing cleaner compositions obtained as described above was evaluated on the following items, and the evaluation results are shown in Table 2.

■Stock solution physical properties a) Appearance b) Specific gravity c) pH d) Viscosity Visual judgment specific gravity cup pH meter B type viscometer Conforms to JIS-2236 Conforms to JIS-2236 Conforms to JIS-2236 Conforms to JIS-2236 ■Gloss increase degree ■Water resistant gloss ■Wipe-off property ■Effect on painted board ■Water scale removal property ■Effect on paint film In addition, water scale removal property, Remove dirt from actual car, (degree of surface scratches) Regarding the effect on the paint film, Effect on car painted surface (discoloration) Visual judgment was made.

〔Effect of the invention〕

By containing boehmite as an abrasive grain component, the polishing cleaner composition of the present invention can remove dirt without causing scratches on the surface to be treated, especially on painted surfaces such as cars. Although it is possible to remove dirt that has penetrated into the interior of the painted surface, it does not cause noticeable scratches, gloss on the painted surface, or loss of stains, as seen with conventional polishing agents containing abrasives. It has an excellent effect of not being observed.

Applicant: Tokyo Aerosol Chemical Co., Ltd. Mitsubishi Chemical Corporation Agent Patent Attorney For Hase - 1 other person

Claims (1)

[Claims] A polishing cleaner composition comprising boehmite or pseudo-boehmite as an abrasive grain component added to a cleaner base.