MXPA06008763A - Polishing composition - Google Patents

Abstract

An abrasive composition is provided based on the following:an abrasive, preferably feldspar 7-59%a clay, preferably smectite clay 3-7%, water 37-64%, an organic solvent, such as kerosene 3-20%and additionally, preferably contains calcium carbonate 20-30%and a surfactant 0.01-1%. The composition may have particles of up to 100&mgr;m, and preferably average particle size diameter of 30-45&mgr;m.

Description

PULIMENT COMPOSITION This application claims priority according to 35 USC 1 19 (e) based on serial number 60 / 543,464, filed on February 1, 2004. Background of the Invention Field of the Invention The present invention relates to a composition of abrasive polish such as a paste or liquid particularly useful as a composition for polishing automotive coatings or the like, and more particularly for removing and polishing scratches. In addition, such compositions can be used in hard surface cleaners, cleaners for plastic and rubber surfaces, liquid cleaners and hand cleaners. The used car resale industry uses rubbing and polishing compounds during the cleaning and detailing process to achieve a highly glossy finish on the bodies before re-selling a vehicle. The cleaning and detailing process typically includes washing the vehicle and then polishing the body finish with a polish compound to remove any noticeable scratches from the surface. This is followed by the application of an enamel compound to obtain a finish with exhibition quality. The car then waxes, and receives a final polish. It should be understood that although the composition is described with respect to use in the automotive reseller industry, the use of the composition is not limited to that purpose.

PRIOR ART Typical polish compositions are based on alpha quartz (crystalline silica) and other similar abrasives representing approximately 35% or more. These compositions are available from Bondo Corporation as Rose Rubbing Compound (product No. 885D) (35-45 &silica), Turtlewax® polishing compound, Deep Crystal System Paint Cleaner from Meguiar's Corporation (2-13% earth diatomeas and calcined kaolin clay) and the 3M® Syper Duty polishing compound (30-60% silica). These compositions typically contain the silica in a carrier, such as kerosene, and the indicated percentages of silica are given with respect to the final composition including the carrier. However, there is a desire to improve the performance in the desired areas of good processing capacity, minimizing swirl marks or opaque parts in the coating. It is also desired to reduce the amount of kerosene used. An automotive coating polish based on Veegum® smectite clay (magnesium aluminum hydrated silicate) distributed by R.T. Vanderbilt Company, Inc. Car polish formulation no. 338, indicated in the Home Products Form, published by R.T. Vanderbilt Company, Inc. as booklet 83, consists of 1.0% smectite clay, 10.0% aluminum silicate, 34.5% water in a carrier. The processing of smectite clay produces a fraction that contains calcium carbonate and feldspar, and quantities of smectite clay, as well as small amounts of alpha quartz. In particular, that fraction typically may contain from about 5 to 80% carbonate, 20-35% feldspar and 0.5-6% quartz. The fraction may also contain, in some cases, traces of opal CT, a partially crystalline form of the silica. SUMMARY OF THE INVENTION The present invention provides a polish composition that exhibits good or better processability and provides excellent gloss, and which minimizes swirl marks and opaque portions of the coating. The composition of the invention is advantageously prepared from a fraction produced during the processing of smectite clay. However, the composition can clearly be prepared in itself from the basic components. Depending on the origin of the source, the yields of the processing contain different amounts of smectite clay, calcium carbonate and feldspar, as well as quartz. Smectite clay may consist of montmorillonite, hectorite, saponite and mixtures thereof; while feldspar may include potassium and / or sodium-potassium aluminum silicates [(Na, K) AISi3O8 l KAISi3O8] as well as calcium and barium aluminum silicates, calcium carbonate may include CaCO3 and / or CaMg (CO3) 2 . The solid ingredients are provided with a water base to form an aqueous fraction, with an amount of an additive promoting the processing capacity, such as a heavy hydrocarbon, for example kerosene. Other promoters of the processing may be used, including organic solvents such as glycol ethers and glycerin. A relatively small amount of surfactant is also preferred to promote the homogenization of the hydrocarbon and the aqueous fractions. These can be a nonionic, cationic or anionic surfactant. Although many of the commercial grade compositions of the prior art generally contain about 25% kerosene, the present composition requires only about 3-20% kerosene. It is understood, however, that the skilled person can increase the kerosene and / or the water (and accordingly the amount of surfactant) to prepare the polishing composition in the form of a gel, a semi-liquid or a liquid. For example, a composition containing approximately 6% kerosene will generally be a paste, while a composition having approximately 12% kerosene, with a mineral content of approximately 87%, will be a gel or semi-liquid.

Another version has approximately 39% of. kerosene, approximately 60% of a mineral mixture and approximately 0.6% of quartz will be in the form of a liquid. The compositions of the prior art have a relatively small particle size (average of approximately 2-17 μm, maximum approximately 35 μm). The present invention has a particle size of about 30-45 μm, and contains particles up to about 1 μm. While larger particles have the effect of increasing abrasion and the resulting glue effect, they can also produce scratches. The inventors have found that with the inventive composition, the potential scratches caused by the larger particles are avoided, allowing a greater effect to be achieved. Polishing ability There is a theory that this may have to do with the presence of one or both of the clay or carbonate. Detailed Description of the Invention Accordingly, a polishing composition consisting of (all amounts are given in mass percentage) is provided: (1) calcium carbonate 20-30% (2) feldspar 7-59% ( 3) smectite clay 3-7% (4) water 37-64% (5) quartz 0.01 -1% (6) opal CT 1 -2% (7) kerosene. 3-20% (8) surfactant 0.01 -1% (9) conservative < 0.5% It is observed that the CT opal can be present as a component of natural origin in the smectite process stream. This compound is not believed to affect the polish characteristics and is therefore not considered part of the invention. The average particle size of the composition should be between about 30 and 45 μm, while the particle size should be up to 100 μm. While the minimum size is preferably at least 1 μm, it should be recognized "that smaller particles may be present as long as the preferred average size is obtained." A conservative such as KATHON® GP / ICP (or CG / ICP II) from Rohm & Haas or bromocidal 4,4-dimethyloxazolidine BIOBAN® CS-1 135 from Dow Chemical may also be optionally present and is understood not to affect the polishing characteristics of the compound, and although feldspar is used here in its natural state, it is understood that aluminum silicates from any source should work in the invention.Although it is believed that quartz may have an important role in the improved composition, it may also be that the presence of silicates in general (such as a combination of quartz and feldspar) / alumium silicates) is the effective one, however the polishing is achieved with less total silicates than the compositions of the prior art. it is possible that the superior properties of the present invention are derived from the larger particle size buffered by the presence of the clay. In this regard, it is contemplated that other clays, for example kaolin, may be effective in place of the smectite; and that other abrasive compounds such as aluminum oxides or other commercial abrasives, may be effective in place of the silicates; as long as the average particle size and the relative amounts of components are generally maintained. In this regard it can also be considered that the invention contains: (1) calcium carbonate 20-30% (2) abrasive compound (silicates, oxides) 7-59% (3) clay 3-7% (4) water 37- 64% (5) kerosene 3-20% (6) surfactant 0.01 -1% and optionally (7) quartz 0.01 -1% with the parameters of particle size as indicated above. Although calcium carbonate is useful in automotive polishes, the base invention may be useful with other types of polishes, such as tile polish, hard surface cleaners, plastic cleaners, rubber, silver or other metals. In such a case it is believed that calcium carbonate can be reduced or eliminated, while the remaining components are left in the above relative proportions, and with the indicated particle size parameters. Experimental data A dispersed composition known as composition A was prepared with the following composition: 46% water 22% calcium carbonate 12% feldspar 6.6% smectite clay 1.8% opal CT 0.6% quartz 6.94% kerosene 0.4% surfactant The Ultra Palmolive® liquid detergent, available from Colgate-Palmolive Co pany, is added as a surfactant, and contains magnesium and sodium dodecylbenzene sulphonate, ammonium laureth sulfate, among others. It should be understood that other surfactants and carriers can be used according to the conventions known in the art.

Composition A was stirred with a propellant for about 90 seconds at 900 rpm to create an emulsion. Comparative Example B was Bondo Corporation Dynatron Automotive polishing compound, which has the following composition: Alpha Quartz 42% Kerosene 27% Alfa terpineol 1 .67% Limonene 0.27%, Water 28.2% Used vehicles have two types of coatings. finished automotive. Body paint on vehicles manufactured before the early 1990s was typically coated with a clear protective coating commonly called "clear coat". The vehicles of recent models manufactured after this period have an automotive finish coating commonly referred to as a "gei coat". Both types of coatings respond in different ways to polishing and cleaning compounds. Experiments were performed to determine Experimental Composition A compared to Composition B of the prior art. The experiments were carried out using old and new model vehicles with two different types of finishing coatings, the clear coat and the gel coat. A series of tests were carried out with compositions A and B in both types of finishes. Compared with composition B, the cutting ability of composition A was superior, there were no scratches left over the finish, the processing capacity (amount of rubbing time before drying) was 125 to 150% better; the final finish showed no evidence of vortex marks or opaque parts, while composition B left the finished part with important opaque parts that would require the use of a polishing compound; and the overall brightness of the body was better when Composition A was used.

Claims (20)

1. CLAIMS 1. An abrasive polish composition, containing: an abrasive compound, clay, water and an organic solvent.
2. 2. The composition of claim 1 further comprising: calcium carbonate.
3. 3. The composition of claim 1 further comprising: calcium carbonate.
4. The composition of claim 1, wherein the abrasive compound consists of feldspar.
5. The composition of claim 1, wherein the clay consists of smectite.
6. 6. The composition of claim 1 which further contains quartz.
7. The composition of claim 1, wherein the diameter of the particle size is one by means of between about 30 and 45 μm.
8. The composition of claim 7, in which particles up to 100 μm in diameter are present.
9. 9. The composition of claim 1, wherein the solvent is a hydrocarbon.
10. The composition of claim 9, wherein the hydrocarbon is kerosene. eleven .
11. The composition of claim 1, wherein the components are present in amounts in mass percentage of approximately: abrasive compound 7-59% clay 3-7% water 37-64%, and organic solvent 3-20%.
12. 12. The composition of claim 1 which further contains calcium carbonate present in about 20-30%.
13. The composition of claim 1, further containing a surfactant present at about 0.01 -1%.
14. The composition of claim 1, wherein the abrasive compound is feldspar.
15. 15. The composition of claim 1, wherein the clay is smectite.
16. 16. The composition of claim 1, wherein the solvent is kerosene.
17. 17. The composition of claim 1 which further contains quartz in an amount of about 0.01 -1%.
18. 18. The composition of claim 1 which further contains calcium carbonate present in about 20-30% and surfactant present in about 0.01-1% or.
19. The composition of claim 18, wherein the particle size is an average of between about 30 and 45 μm.
20. 20. An abrasive composition, consisting of: (a) calcium carbonate 20-30% (b) feldspar 7-12% (c) smectite clay 3-7% (d) water 37-64% (e) quartz 0.01 -1% (f) kerosene 3-20% (g) surfactant 0.01 -1% in which the diameter of the particle size is an average of between about 30 and 45 μm.