JPH03192199A - Cleaning and lustering agent and cleaning method - Google Patents

Abstract

PURPOSE:To improve the cleaning and lustering effect by emulsifying an organopolysiloxane with a specified surfactant. CONSTITUTION:A polyorganosiloxane having a viscosity of 100-10,000cSt is emulsified by adding thereto a surfactant consisting of 5-15wt.% ammonium salt of a fatty acid and 10-60wt.% anionic surfactant (e.g. morpholine oleate). The obtained emulsion is mixed with 3-10wt.% 5C or lower alcohol (e.g. methanol) and 1-3wt.% liquid 8C or higher iso-alcohol (e.g. 2-ethylhexyl alcohol) to give a cleaning and lustering agent. The lustering agent is sprayed onto a surface to be cleaned so that it is foamed, a higher iso-alcohol film is formed on the surface, the organopolysiloxane is deposited from the emulsion due to the decomposition of the ammonium salt of fatty acid, and contaminants and the foamed lustering fluid are allowed to flow down along the surface to be cleaned.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning and polishing agent suitable for cleaning and polishing plastic products, rubber products, particularly automobile tires, bumpers, etc., and a cleaning method.

[Conventional technology]

Spray-type cleaning and polishing agents (abbreviated as spray-type cleaning agents) whose main ingredient is silicone oil emulsion are widely used for cleaning and polishing tires and the like.

[Problem to be solved by the invention] The conventional technology has the following problems.

When a spray-type cleaning agent is sprayed onto tires, etc., foam is generated, and the foam-like cleaning agent (abbreviated as foam) adheres to the tire surface, and dirt adhering to the tires, etc. transfers to the foam.

As it is removed, the silicone oil adheres to the tire surface and polishes it, but since the silicone oil is contained in the form of an emulsion, the adhesion of the silicone oil to the tire surface is insufficient. It is not possible to apply sufficient polish.

Foam formation is also an effective means for cleaning, but
In order to remove dirt from tires, etc., it is necessary to remove foam containing this dirt.

Dirt can be sufficiently removed by wiping the bubbles with a cloth, but this has the disadvantage that hands get dirty and cleaning takes time and effort.

Attempts have been made to add an antifoaming agent to the spray cleaning agent to eliminate the foam and allow the spray cleaning agent to flow down along the tire surface, thereby eliminating the need for wiping off the foam. The ability to remove dirt may be reduced, and dirt may remain on the surface of tires, etc., resulting in incomplete cleaning.

Furthermore, since the amount of silicone antifoaming agent added is usually 0.5% or less, which is too small, the antifoaming silicone is dispersed and incorporated into the mother liquor polysiloxane emulsion due to changes over time, reducing the antifoaming effect and causing variations in quality. There is a drawback that it causes

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a cleaning and polishing agent and a cleaning method that do not require wiping off the cleaning solution by hand and have good cleaning and polishing effects.

[Means to solve problems]

In order to achieve the above object, the present invention provides a cleaning and polishing agent containing an emulsion of an organopolysiloxane emulsified with a surfactant containing an ammonium salt of a fatty acid as a main ingredient, preferably an organopolysiloxane containing an ammonium salt of a fatty acid as a main ingredient. An emulsion emulsified with a surfactant, a cleaning polishing agent containing a lower alcohol and a liquid iso-higher alcohol having 8 or more carbon atoms, and an emulsion in which organopolysiloxane is emulsified with a surfactant mainly containing ammonium salts of fatty acids. A cleaning polishing agent containing a lower alcohol and a liquid iso-higher alcohol with carbon number of 8 or more is sprayed onto the surface to be cleaned and foamed, and an iso-higher alcohol film is formed on the surface to be cleaned. Cleaning is performed by precipitating polysiloxane and causing a foamy cleaning and polishing liquid to flow down along the surface to be cleaned together with dirt.

Next, the present invention will be explained in more detail.

As the organopolysiloxane used in the present invention, there are no particular limitations, and any conventionally known polishing agents can be used, but dimethylorganopolysiloxane is most suitable, and methylphenylamino-modified, epoxy-modified Modified polyorganosiloxanes such as those modified with fatty acids and the like can also be used.

Further, the viscosity thereof is particularly preferably from 100 to 10,000 cs. A suitable content thereof is 10 to 30 wt%. If it is less than 10-1%, the gloss will be too low, and if it is more than 30wt%, the price will be too high, which is economically disadvantageous.

In the present invention, a surfactant containing fatty acid ammonium salt as a main ingredient is used as a surfactant for emulsifying the organopolysiloxane as described above. As the fatty acid, unsaturated fatty acids such as oleic acid and tall oil fatty acids are suitable.

Fatty acid ammonium salt releases ammonia in the atmosphere, decomposes, and loses its emulsifying power. Therefore, when the cleaning and polishing agent of the present invention is sprayed onto the tire surface, organopolysiloxane is precipitated, and the organopolysiloxane is deposited on the tire surface. (Silicone oil) has sufficient adhesion resistance and a remarkable polishing effect can be obtained.

The amount of fatty acid ammonium used is suitably 5 to 15 wt%, preferably 6 to 8 set%, of the organopolysiloxane.

If this amount is too small, the stability of the emulsion is likely to be impaired.
Moreover, if this amount is too large, the water resistance of the formed organopolysiloxane film tends to be insufficient.

In addition, in order to further improve the dispersibility of the organopolysiloxane and to improve the stability of the generated emulsion during storage (before spraying), fatty acid morpholine, fatty acid t-aminomethyl propazol salt, etc. Add anionic surfactant to 10% to 60%1t% of fatty acid ammonium.
Preferably, it can be added in an amount of about 3-0 to 40-1%.

Examples of anionic surfactants include morpholine oleate, aminomethylpropatol oleate, morpholine tall oil fatty acid, and aminomethylpropatol tall oil fatty acid. If the amount of these surfactants is too small, the effect tends to be insufficient, and if the amount is too large, the precipitation of the organopolysiloxane tends to be insufficient.

Note that fatty acid ammonium is easily decomposed, so when emulsifying organopolysiloxane with an aqueous liquid, rather than using fatty acid ammonium in the form of fatty acid ammonium, the fatty acid and ammonium are added separately to water or liquid, and mixed to form an aqueous liquid. Preferably, fatty acids and ammonia are combined in a liquid to form fatty acid ammonium.

The organopolysiloxane emulsion of the present invention has a high viscosity, and the generated foam remains firmly attached to the tire surface and does not flow down.Therefore, in order to remove dirt, it is necessary to wipe off the foam.

In the present invention, lower alcohol is added to the organopolysiloxane emulsion described above to lower its viscosity, and the cleaning polishing liquid is allowed to flow down along the tire surface while maintaining its foamed state, removing dirt without wiping it off. Remove.

As the lower alcohol, it is appropriate to use one having 5 or less carbon atoms, preferably 3 or less carbon atoms, such as ethanol, methanol, isopropanol, etc.

The amount of lower alcohol added is suitably 3 to 10-1%, preferably 4 to 7% by weight, based on the weight of the organopolysiloxane emulsion.

If the amount is too small, the effect will not be sufficient, and if the amount is too large, the cleaning solution will have a strong alcohol odor.

By adding a lower alcohol, the viscosity of the organopolysiloxane emulsion can be lowered, and the cleaning power can be increased due to the synergistic effect of the surfactant and the lower alcohol.

In the present invention, a liquid isohigher alcohol is further added.

As the liquid iso-higher alcohol, one having low solubility in water (preferably 0.5 wt% or less) is preferable, and examples thereof include 2-ethylhexyl alcohol, hexadecanol, and octadecanol.

Addition of isohigher alcohol increases the polishing effect. Its effect is not fully understood, but when a cleaning and polishing liquid is sprayed onto a tire, etc., an interfacial film mainly composed of iso-higher alcohol is formed on the surface being cleaned, and as mentioned above, the emulsion state is broken and organopolymers are precipitated. This seems to be because siloxane flows down along this interfacial film.

In addition, due to the interfacial film mentioned above, loose dirt is removed from the surface to be cleaned (
The effect of flowing down without re-adhering to the tire surface can be obtained.

The appropriate amount of iso-higher alcohol to be added is 1 to 3 wt% of the emulsion. If it is less than 1 wt%, it is insufficient to form an interfacial film, and if it is more than 3 wt%, it will interfere with the gloss of the siloxane formed film and the water repellency of the formed film will decrease.

In addition to the above-mentioned components, other additives such as fluorocarbon-based surfactants as leveling agents, preservatives, fragrances, etc. may be added to the cleaning and polishing agent of the present invention. Of course, it is also possible.

[Function] By using a cleaning polish containing an emulsion of organopolysiloxane emulsified with a surfactant mainly containing fatty acid ammonium salts, spraying of this cleaning polish can be done by decomposing the fatty acid ammonium salts. Organopolysiloxane is precipitated to provide sufficient adhesion to the surface to be washed, resulting in a good polish.

In addition, a cleaning solution can be prepared by spraying a cleaning polishing agent containing an emulsion of organopolysiloxane with a surfactant mainly containing fatty acid ammonium salt, a lower alcohol, and a liquid isohigher alcohol having a carbon number of 8 or more onto the surface to be cleaned. foam to form a higher alcohol film on the surface to be cleaned. Furthermore, organopolysiloxane is precipitated from the emulsion by the decomposition of fatty acid ammonium salts, and the viscosity of the cleaning liquid is lowered by the action of the lower alcohol, and the cleaning liquid is allowed to flow down along the above-mentioned film in a foamy state, thereby dislodging dirt onto the surface to be cleaned. It is removed without re-adhesion, allows the organopolysiloxane to sufficiently adhere to the surface to be cleaned, and provides a good polish.

(Example 1) Dimethylpolysiloxane (Shin-Etsu Chemical type KF96°100
Add 2 parts of purified oleic acid to 25 parts of cs) and stir at high speed.
A solution of 0.5 parts of 27mino-2-methyl-1-propertool and 0.8 parts of ammonia in 20 parts of hot purified water at a temperature of 50°C was gradually aged to form a gel, and then 51.2 parts of cold purified water was dissolved. and emulsify using a high-speed emulsifier. Ethyl alcohol 7 is added to the obtained siloxane emulsion.
1 part, and 2.0 parts of 2-ethylhexyl alcohol to prepare a product. This was filled into an aerosol can using 15 parts of liquefied petroleum gas (LPG).

[Example 2] Dimethylpolysiloxane (Shin-Etsu Chemical type KF 96.>
Add 2 parts of refined tall oil fatty acid to 20 parts of 6000 cs), stir at high speed, and add 0.7 part of polyoxyethylene sorbitan monooleate, 0.5 part of morpholine, and 0.5 part of ammonia.
Add 20 parts of warm purified water at 60°C in which 5 parts were dissolved to form a pregel, and further add 57.8 parts of cold purified water and emulsify in a high-speed emulsifier. To the obtained emulsion were added 3 parts of isopropyl alcohol and 2 parts of hexadecanol, which were then filled together with 15 parts of liquefied petroleum gas (LPG) into an aerosol can.

[Comparative Example 1] Dimethylpolysiloxane (Shin-Etsu Chemical type KF96゜100
0 cs), 3.5 parts of polyoxyethylene sonorubikune monolaurate, 2.5 parts of 1,3-butanediol, and 0.4 parts of a silicone antifoaming agent (Shin-Etsu Chemical type KM75) were stirred at high speed. After homogenization, 10 parts of purified water was added to form a pregel, and then 63.6 parts of purified water was added and emulsified using a high-speed emulsifier. The resulting emulsion was filled into an aerosol can along with 15 parts of liquefied petroleum gas (LPG).

[Comparative example 2] Dimethylpolysiloxane (Shin-Etsu Chemical type KF96゜500
cs) 20 parts, polyoxyethylene oleyl ether 3
．． 5 parts, 2.5 parts of 1.3-butanediol, and 0.4 parts of polyoxyethylene polyoxypropylene type antifoaming agent were added, stirred at high speed to make it homogeneous, and then 10 parts of cold purified water was added to form a pregel. Then, 63.6 parts of cold purified water was added and emulsified using a high-speed emulsifier. The obtained emulsion was filled into an aerosol can together with liquefied petroleum gas LPG.

[Experiment example]

The following evaluation tests were conducted on the four types of aerosol-type spray cleaning and polishing agents obtained as described above, and the results are shown in the attached table.

1. After spraying the liquid on the sidewall of the tire for 3 seconds, the uniformity (leveling property) of the coating liquid on the tire surface was visually observed.

Rating A: The coating was applied fairly uniformly.

B: Slightly uneven.

C: There is considerable unevenness (some areas are not coated)
.

2. Effect on rubber SBR rubber test piece hung vertically (5C1a x 15cm)
The rubber was sprayed for 3 seconds at a distance of 20 cm and left at room temperature for 24 hours, after which the surface condition of the rubber was observed.

Rating A: No abnormality.

B: Some parts are discolored.

C: It is swollen.

3. Washability After spraying on the sidewall of the tire for 3 seconds, visually observe whether the liquid flowing down contains dirt, dust, mud, etc.

Rating A: The flowing liquid contains a lot of dirt, dust, mud, etc., and the cleaning surface is clean.

B: The flowing liquid contains some dirt, dust, mud, etc., and the cleaning surface is slightly clean.

The flowing liquid C contains almost no dirt, dust, mud, etc., and the washed surface is the same as the unwashed surface.

4. Gloss A vertically hung SBR rubber test piece (5 cm x 15 cm) was sprayed for 3 seconds at a distance of 200 m, and the surface condition of the rubber was observed after 24 hours at room temperature.

Rating A: Good gloss and black shine.

B: It is shiny, but it is not very clear.

C: Almost no gloss, same as uncoated surface.

As is clear from the attached table, good evaluations were obtained for all test items for Example 1.2, but in Comparative Example 1, bubbles disappeared easily, stains were difficult to remove, and washability was poor. In No. 2, bubbles remain and need to be wiped off, and as they are, no gloss is produced at all, and both cannot be considered suitable cleaning and polishing agents.

〔Effect of the invention〕

It has good cleaning and polishing effects, and dirt can be easily removed without the need for wiping.

Claims (3)

[Claims] (1) A cleaning and polishing agent containing an emulsion in which organopolysiloxane is emulsified with a surfactant mainly containing ammonium salts of fatty acids. (2) A cleaning and polishing agent containing an emulsion obtained by emulsifying organopolysiloxane with a surfactant mainly consisting of a fatty acid ammonium salt, a lower alcohol, and a liquid isohigher alcohol having 8 or more carbon atoms. (3) A cleaning polishing agent containing an emulsion of organopolysiloxane emulsified with a surfactant mainly composed of fatty acid ammonium salt, a lower alcohol, and a liquid isohigher alcohol having 8 or more carbon atoms is sprayed onto the surface to be cleaned and foamed. A cleaning method in which an isohigher alcohol film is also formed on the surface to be cleaned, organopolysiloxane is precipitated from the emulsion by decomposition of the fatty acid ammonium salt, and a foamy cleaning polishing liquid flows down along the surface to be cleaned along with the dirt.