JPS6230171A - Polishing agent - Google Patents

Abstract

PURPOSE:To provide a polishing agent containing a specific amino acid derivative as a powdery additive for polishing agent, exhibiting excellent polishing and stain-removing effect without causing the damage of a coating film and the corrosion of the coated metal surface, giving a treated surface having excellent smoothness and removable from the surface easily by wiping. CONSTITUTION:The objective polishing agent is composed of (A) 0.1-30wt% additive selected from (i) an N<omega>-long chain basic amino acid containing 8-22C aliphatic acyl group, (ii) a 8-22C alpha-aminofatty acid (e.g. alpha-aminocaprylic acid) and (iii) an aspartic acid derivative of formula (R and R' are 8-22C alkyl; sum of the carbon numbers of R and R' is 16-44) (e.g. N-stearylaspartic acid stearylamide) and (B) conventional components of a polishing agent consisting of a solid oil such as silicone oil, wax, etc., as a lustering and water-repelling agent and a liquid oil such as mineral oil acting as the dispersion medium of each component. The above long-chain monoacyl basic amino acid can be produced e.g. by introducing an acyl group such as lauroyl group to lysine.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to N
- A polishing agent containing at least one of a long-chain monoacyl basic amino acid, an α-amino fatty acid having 8 to 22 carbon atoms, or an aspartic acid derivative represented by the following general formula; , surfaces such as leather and wood, specifically furniture, car bodies, flooring, shoes,
It is highly effective in removing dirt and polishing the painted surfaces of bags, etc.

RNH-CH-Co□H ■ CH2C0NHR' (However, in the above general formula, R and R' each represent an alkyl group having a carbon number of ! to 22 and a total of 9 to 44.) Conventional Technical polishes can be classified into three types based on their appearance: solid polishes, paste polishes, and liquid polishes. These are basically silicone oil added for the purpose of imparting gloss and water-resistance, and solid oils such as wax and deltizer added to prevent uneven coating of the polishing agent or to adjust the viscosity. liquid oil such as mineral oil, which serves as a dispersion medium for these components. Polishing agents are put into practical use in various forms by adjusting the mixing ratio of the above components or, in some cases, emulsifying the above mixture and water using a surfactant. It is known that degreasing agents have drawbacks such as poor ability to remove firmly adhered stains and poor wiping properties after application. Therefore, in order to polish a painted surface with strong stains and at the same time improve the wipeability after application, a powder component with a particle size of 5 to 200 microns is generally added. Known examples of such powder include silica powder, carden white, graphite, mica, talc, zinc white, sulfur, molybdenum sulfide, and metal soap. These powders for adding polishing agents include:
It is required to have excellent smoothness and spread well when applied, to polish the surface without damaging the paint, and to be able to wipe it off evenly without any unevenness when wiping. When used as a polishing agent, liquid polishing agent, etc., it is required to have excellent dispersibility in oil. However, among the conventional powders for adding polishing agents as described above, inorganic powders such as silica, mica, talc, and molybdenum disulfide have excellent smoothness, wipeability, and polishability. However, these inorganic powders are hydrophilic and have a high specific gravity, so they have disadvantages such as poor dispersibility when added to paste polishes or liquid polishes. be.

On the other hand, zinc stearate, which is an organic powder, disperses well even when added to liquid polishing agents, etc., and provides a polishing agent with excellent spreadability, but zinc stearate does not oxidize unsaturated oil. Due to their promotion, such polishes have the disadvantage of forming peroxides which cause corrosion deterioration of metals during long-term storage.

Departure F! Problem to be Solved by A The present invention has the advantage of not scratching the paint film or corroding the painted surface, which are the drawbacks of the conventional polishing agents mentioned above, but also having smoothness and abrasiveness. The present invention aims to provide a polishing agent with excellent wipeability.

RNH-CH-Co2H 0H2CONHRゝ (However, in the above general formula, R and Ro each represent an alkyl group having 8 to 22 carbon atoms and a total of 9 to 44.) Solve the problem While researching various derivatives of amino acids, the present inventors surprisingly discovered the plate-like crystal structure and cleavage of an asno-4lagic acid derivative represented by the general formula of an aliphatic amino acid having 8 to 22 carbon atoms. It has excellent characteristics as a powder for adding a polishing agent, such as smoothness, smoothness, antioxidation properties, and adhesion to metal surfaces due to chelate, and by blending these, it is possible to create a polish that improves the drawbacks of conventional polishes. Agent acids can be easily obtained by introducing a hydrophobic acyl group into α,ω basic amino acids such as lysine and ornithine. For example, after protecting the amine group at the α-position of these basic amino acids, the well-known 5chott@
The desired N-monoacyl basic amino acid can be obtained by acylating the amino group at the ω position by an n-Haumann reaction and then removing the protecting group at the α position.

Alternatively, it can be similarly obtained by the method described in Japanese Patent Publication No. 51-28610. Examples of the basic amino acids constituting the above-mentioned 9N-monoacyl basic amino acids include lysine, ornithine, and these may be in optically active forms or racemic forms. As the acyl group, a saturated or unsaturated aliphatic acyl group having 8 to 22 carbon atoms is used, and specific examples include capryloyl, lauroyl, myristoyl, valmitoyl, stearoyl, hardened tallow acyl, tallow acyl, cocoyl, and phenoyl. can give. Furthermore, mixtures of these acyl groups are also acceptable.

The other α-amino fatty acid can be obtained, for example, by dissolving α-chromium fatty acid in alcohol, making a saturated ammonium solution under cooling, and then heating the solution at 40 to 50° C. for several hours.

Examples of such α-amino fatty acids are α-aminocagrilic acid, α-aminopelargonic acid, α-aminocagliic acid, α-aminolauric acid, α-aminomyristic acid, and α-aminopalmitic acid.

Examples include α-amine stearic acid, α-aminoisostearic acid, α-aminobehenic acid, and mixtures thereof.

Also, Asuno J? in the present invention? Raginic acid derivatives can generally be produced using maleic anhydride as a starting material. That is, it can be obtained by adding an amine to maleic anhydride, amidating it, and then introducing a t)e-substituted amino group by Michael addition reaction of the amine.

Examples of such compounds include N-2-ethylhexyl aspartate-2-ethylhexylamide, N-2
-Ethylhexyl aspartic acid laurylamide, N-
Lauryl aspartic acid laurylamide, N-stearylamylate/4'lagic acid basic amino acid, α-amine fatty acid, and aspartic acid derivative are tabular powder microcrystals, which are ground to the size or desired particle size, When mixed with silicone oil, wax, mineral oil, etc., it has excellent smoothness, abrasiveness, and wipeability, and it does not scratch the paint film.
It is possible to obtain a polishing agent that is less likely to cause corrosion on metal painted surfaces. At this time, powders conventionally used in polishing agents, such as silica, carden white, graphite,
Mica, talc, zinc white, sulfur, molybdenum sulfide, zinc stearate, etc. can also be used in combination as appropriate.

In the polishing agent of the present invention, methylhydrogen silicone oil in which hydrogen and methyl groups are bonded to the siloxane skeleton, and methyl silicone in which only methyl groups are bonded, are silicone oils used for the purpose of imparting gloss and water resistance. Oil, methylphenyl silicone oil in which a methyl group and a phenyl group are bonded, or amine silicone oil in which an amino group is introduced can be used alone or in combination.

In addition, liquid oils such as mineral oils used as the other base component include: ・Fine-based oil, naphthene-based oil,
Mineral oils such as aromatic base oils, diester oils such as sebacic acid diesters and fatty acid diesters, hydrocarbon oils such as ethylene polymerized oils and zolopyrene polymerized oils, alkylated aromatics such as dodecylbenzene and didodecylbenzene, Polyoxyethylene oxide, polyalkylene oxide such as polypropylene oxide, polyglycidyl ether, yj? Examples include 17 vinyl ether, &17 alkyl ether and ester, halodanized hydrocarbon, alkyl amine, and imine.

Furthermore, the waxes used in the polishing agent of the present invention include montan wax, wax wax, camphor wax, partially saponified wax, polyethylene wax, ester wax, synthetic waxes made from various vegetable oils, and carnauba wax. Examples include natural wax.

The mixing ratio of the above-mentioned components varies depending on the use and form of the polishing agent, but in the case of obtaining a solid polishing agent, wax content: 10 to 20% by weight, wax content: 4 to 5M, silicone oil: 4 to 5M, and liquid oil: 70%. A suitable range is 80% by weight of the N-long chain monoacyl basic amino acid or/and α-amino fatty acid or/and 5 to 30% by weight of the aspartic acid visiting conductor. Also,
The paste polishing agent has a wax content of 3 to 101i,
3 to 5% by weight of silicone oil, 25 to 50% by weight of liquid oil, ω, N-long chain monoacyl basic amino acid or/and α-amino fatty acid or/and aspartic acid derivative in the range of 5 to 20% by weight, Using ~3% by weight surfactant, 40-60! It can be obtained by emulsifying it with water in a lid.

On the other hand, in order to obtain a liquid polish, it is necessary to reduce the wax content, which is 2 to 31f% wax and 2% silicone oil.
-5% by weight, liquid oil content of 80-95% by weight, N-long chain monoacyl basic amino acid or/and α-7 amino fatty acid and/or aspartic acid derivative of 0.1-15% by weight.

No special method is required to produce the polishing agent of the present invention, and the following method is generally used. That is, wax is added to a mixture of silicone oil and liquid oil, and the mixture is heated to 80°C.
Heat at above temperature to uniformly dissolve. Here, a predetermined amount of N-long chain monoacyl basic amino acid or/and α
-7mino fatty acid and/or asno-4ragic acid derivative are added, stirred until uniform, and then cooled to room temperature. In addition, when obtaining an emulsified polish, a lipophilic surfactant is added to the oil phase, a hydrophilic surfactant is added to the aqueous phase, and then both phases are emulsified using a conventional method. Bye. At this time, the N-long chain monoacyl basic amino acid or/and α-amino fatty acid or/and aspartic acid derivative may be dispersed in the oil phase in advance or may be added after emulsification. Various additives such as antioxidants, viscosity index improvers, aroma improvers, colorants, fluorescent dyes, etc. may be added to the polishing agent of the invention depending on the intended use thereof.

- Crystals of amino fatty acids and aspartic acid derivatives are soft plate-like crystals, and as a result of their cleavage properties, polishing agents containing them spread smoothly and have excellent polishing properties without damaging painted surfaces. Fatty acids and Asuno 4
The lagic acid derivative has a chelating power, remains on the metal surface in an appropriate amount even after wiping, and can also impart water properties to the metal surface. Furthermore, these have a specific gravity of around 1.2 and are significantly lighter than other inorganic polishing agent powders, so they are also effective when added to paste polishes, liquid polishes, etc. A polishing agent that does not easily cause sedimentation or separation and contains an unsaturated noic acid or/and α-7 amino fatty acid and/or an aspartic acid derivative solves many problems of conventional polishing agents. Furniture, car bodies, flooring,
It is highly effective in removing dirt and polishing the painted surfaces of shoes, bags, etc.

EXAMPLES Examples of the present invention are shown below, but it goes without saying that the present invention is not limited thereto.

Example 1 Solid polish carnauba wax 16% by weight Silicone oil (Note 1) 2 Mineral oil (Note 2) 73 N-lauroyl lysine 5α-amino and lumitonic acid 5 Pigments and fragrances
Appropriate amounts of Karnapawa, camphorus, silicone oil, and mineral oil are heated at 80°C to uniformly dissolve them. N-lauroyl lysine and α-amine/4-rumitic acid are added thereto, and after mixing, the mixture is cooled to room temperature and solidified.

The solid polish thus obtained has excellent spreadability when applied to metal surfaces, ease of wiping, and gloss after wiping, and is suitable for use as an automobile wax.

Example 2 Liquid polishing agent carnauba wax 1 layer i Chimitsuwa l silicone oil (Note 1)
5 olive oil 20
Mineral oil (Note 2) 63 N - Hydrogenated beef tallow fatty acid acyl lysine 8 N - 2 - Nib cover 50 pieces 1 Shun laurylamide 2
Pigments and fragrances Appropriate amounts of carnauba wax, beeswax, silicone oil, olive oil and mineral oil
Heat at ℃ to uniformly dissolve. N-hardened beef tallow fatty acid acyl lysine is added thereto, mixed and then cooled to room temperature.

The liquid polish thus obtained exhibits excellent effects in removing dirt and polishing wood surfaces, and is suitable for use as a polish for furniture and flooring.

Example 3 Emulsion polish carnauba wax 3x i% silicone oil (Note 1) 5 Nilacol TP-1013
i-Chinikkor SP-102 Water 42
Pigment and Fragrance Heat appropriate amounts of the above ingredients other than water at 80°C and mix until uniform. Add water heated to 80° C. and cool to room temperature while stirring to obtain a milky polish with a viscosity of 5000 P.

Such a polishing agent is effective in removing both water-based stains and oil-based stains, and is suitable as a polishing agent for the surfaces of wood, metal, and leather.

and heat to 97.8°C while blowing air. Sampling was carried out over time, and the amount of peroxide produced was quantified based on the basic oil and fat analysis method.

As shown in Figure IVC, N-acyl lysine is recognized to have the effect of preventing oxidation of fats and oils and suppressing the formation of peroxides that have a corrosive effect on metals. Moreover, such characteristics were remarkable for long-chain acyl lysines having 8 or more carbon atoms.

Example 5 Water/methanol mixed solvent containing 100 ppm of copper sulfate (1:1 weight ratio) 100 WItKN-Lau0 [50 mg of luridine was added, stirred at room temperature for 1 hour, and then filtered.

The amount of copper ions remaining in the filtrate was determined by optical emission spectrometry (IC).
Figure 2 shows the results measured by P ) and compared with the case without additives.

As is clear from this result, N-lauroyl lysine has the ability to trap metal ions. This is due to the chelation of α-amino acid residues and metal ions, and similar properties are also observed in α-amine fatty acids. N-long chain monoacyl basic amino acids or α-
A polishing agent containing amino fatty acids remains on the metal surface in an appropriate amount even after wiping, and can form a water-repellent protective film on the surface.

4. Brief explanation of the figure Figure 1 shows the antioxidant effect of N-2 uroyl lysine on refined olive oil. The horizontal axis shows the heating time,
The vertical axis is the peroxide value, i.e. 1 kl of oil and fat. Figure 2 shows the metal ion scavenging ability of ON-lauroyl lysine, which represents the number of milliequivalents of iodine liberated from potassium iodide due to the peroxide present therein. The horizontal axis shows the detection wavelength, and the vertical axis shows the absorption intensity of light by copper ions.

(Note 1) Shin-Etsu Chemical Co., Ltd. Shin-Etsu Silicon KF-56 (Note 2)
) Maruzen Oil Co., Ltd. Swazol 1000 and Nippon Oil Co., Ltd.
l:2 mixture of mineral spirit A

Claims (1)

[Scope of Claims] N^ω-long chain monoacyl basic amino acid having an aliphatic acyl group having 8 to 22 carbon atoms or α-amino fatty acid having 8 to 22 carbon atoms or an aspartic acid derivative represented by the following general formula 0.1 to 30% by weight of at least one of these
▲There are mathematical formulas, chemical formulas, tables, etc.▼ (However, in the above general formula, R and R' each have a carbon number of 8 to 22, and the total of both is 9 to 22.) 44.)