Acidic biodegradable formulation and its use as a surface restorative agent

Abstract

The present invention provides a biodegradable formulation and its use as a surfaces restoring agent, said formulation allows a substantial savings when restoring the existing paint on different surfaces, since it mainly cleans and restores the surface or paint contaminated by the environment, damaged due to the sun and the processes of the different industries, in addition to being friendly to the environment, making it a useful technology in any industrial branch that involves cleaning and restoring large areas. It is worth noting that the modifications to the original formula were made to optimize the results in the different applications and improve its biodegradability.

Claims

1. A biodegradable formulation comprising: a) from 5 to 22.5% hydrochloric acid; b) from 10 to 40% phosphoric acid; c) from 1.2 to 12% ammonium bifluoride; d) from 1 to 12% butyl cellosolve; e) from 1 to 12% ethoxylated lauryl alcohol; f) from 1 to 12% xanthan gum; and g) at least 20% water.

2. The biodegradable formulation according to claim 1, wherein the formulation comprises 14% hydrochloric acid, 18% phosphoric acid, 3% ammonium bifluoride, 4.5% butyl cellosolve, 2% ethoxylated lauryl alcohol, 1% xanthan gum and at least 20% water.

3. The biodegradable formulation, according to claim 1, optionally including at least one colorant.

4. The biodegradable formulation, according to claim 3, wherein the colorant is present in 0.001 g/l.

5. A method for restoring a surface by using the biodegradable formulation according to claim 1.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) FIG. 1. Shows a photograph with a front view of a metallic surface prior to the application of the formulation object of the present invention.

(2) FIG. 2. Shows a photograph with a front view of a metallic surface after the application of the formulation object of the present invention.

(3) FIG. 3. Shows a photograph with a front view of a metal structure prior to the application of the formulation object of the present invention.

(4) FIG. 4. Shows a photograph with a front view of a metallic structure after the application of the formulation object of the present invention.

(5) FIG. 5. Shows a photograph with an isometric view of a metal tank prior to the application of the formulation object of the present invention.

(6) FIG. 6. Shows a photograph with an isometric view of a metallic tank after the application of the formulation object of the present invention.

(7) FIG. 7. Shows a photograph with a side view of a metallic pipe prior to the application of the formulation object of the present invention.

(8) FIG. 8. Shows a photograph with a side view of a metallic pipe after the application of the formulation object of the present invention.

(9) FIG. 9. Shows a photograph with a side view of a vehicle used in the construction industry prior to the application of the formulation object of the present invention.

(10) FIG. 10. Shows a photograph with a side view of a vehicle used in the construction industry after the application of the formulation object of the present invention.

(11) FIG. 11. Shows a photograph with a front view of a metallic industrial container prior to the application of the formulation object of the present invention.

(12) FIG. 12. Shows a photograph with a front view of a metallic industrial container after the application of the formulation object of the present invention.

(13) FIG. 13. Shows a photograph with a front view of a metallic industrial container prior to the application of the formulation object of the present invention.

(14) FIG. 14. Shows a photograph with a front view of a metallic industrial container after the application of the formulation object of the present invention.

(15) FIG. 15. Shows a photograph with a front view of a metallic industrial container prior to the application of the formulation object of the present invention.

(16) FIG. 16. Shows a photograph with a front view of a metallic industrial container after the application of the formulation object of the present invention.

(17) FIG. 17. Shows a photograph with a top view of a copper outlet prior to the application of the formulation object of the present invention.

(18) FIG. 18. Shows a photograph with a top view of a copper outlet after the application of the formulation object of the present invention.

(19) FIG. 19. Shows a photograph with a front view of a glass window prior to the application of the formulation object of the present invention.

(20) FIG. 20. Shows a photograph with a front view of a glass window subsequent to the application of the formulation object of the present invention.

(21) FIG. 21. Shows a top view of a concrete staircase, where the steps prior to the application of the formulation appear at the bottom and the steps already cleaned at the top once the formulation was applied.

DETAILED DESCRIPTION OF THE INVENTION

(22) The present invention comprises a biodegradable formulation that is used on surfaces, preferably industrial, shown in FIG. 1, FIG. 3, FIG. 5 and FIG. 7, which usually show damage due to being exposed to the outside and in contact with inclement weather, in addition to having traces of industrial materials such as oils and other residues, which cause these surfaces to present an appearance of neglect and dirt.

(23) The present invention, unlike the existing products on the market that promise to clean these types of surfaces, does not damage or eliminate the shine of metallic structures, avoiding the yellowish color that can appear in the long term with said formulations, thus, the present invention cleans, decontaminates, and restores, maintaining the original shine of the structures, as shown in FIG. 2, FIG. 4, FIG. 6 and FIG. 8, in addition to being non-toxic to the user who applies it.

(24) The invention may be applied to steel, aluminum, metal, foil, and copper, as shown in FIGS. 17 and 18; additionally on surfaces painted with alkylidic, epoxy, and polyurethane enamels of any color, as shown in FIG. 9 and FIG. 10, also removes the paint heated by ultraviolet rays, maintaining the original color, as shown in FIG. 15 and FIG. 16, without the need to sand the surface or applying sand blasting. In the same way, in paint application processes or when it is required to remove stains from ferrous oxide, commonly called orange runoff, as shown in FIG. 11 and FIG. 13, it allows for a clean surface, shown in FIG. 12 and FIG. 14, and ready for the application of an anticorrosive background or paint, depending on each case; likewise with the present invention it is possible to clean glass stained by weather and hard water, as seen in FIGS. 19 and 20, as well as quarry, brick, stone, and various types of floors, such as concrete floors, shown in FIG. 21.

(25) The biodegradable formulation object of the present invention comprises hydrochloric acid from 5 to 22.5%, phosphoric acid from 10 to 40%, ammonium bifluoride 1.2 to 12%, butyl cellosolve from 1 to 12%, NF 1000 from 0.5 to 13%, 10M ethoxylated lauric alcohol from 1 to 12%, xanthan gum from 1 to 12% and at least 20% of water; or optionally it comprises 0.001 g/l of a dye; where it preferably comprises 14% hydrochloric acid, 18% phosphoric acid, 3% ammonium bifluoride, 4.5% butyl cellosolve, 3.5% NF 1000, 2% 10 M ethoxylated lauric alcohol, 0.5% xanthan gum and at least 20% water.

Example 1. Process of Obtaining the Formulation

(26) To prepare the formulation, water is added with at least one corrosion inhibitor and with ammonium bifluoride and it is kept in agitation, to later add hydrochloric acid and phosphoric acid to obtain a primary mixture.

(27) Independently, at least one organic solvent is mixed with 10M lauric alcohol, betaine, and sodium lauryl ether sulfate. It is kept stirring until a homogeneous mixture is obtained, said homogeneous mixture is added to the primary mixture maintaining constant agitation. Finally add the thickener and color.

Example 2. Preferred Form of Application of the Invention

(28) Once the surface where the formulation is to be applied is identified, it is applied by means of spraying, and with the help of a soft plastic bristle brush it is distributed evenly on the surface, leaving the formulation to act at least 2 minutes or until some type of reaction is visually identified on the surface, to then rinsed with pressurized water and finally dried.

Example 3. Evaluation of Chemical Oxygen Demand

(29) Once the biochemical oxygen demand test was performed, after 5 days it is considered fully biodegradable under normal conditions when the percentage of biodegradation is greater than 60% of the BOD5 estimated from the chemical oxygen demand and the BOD5 measured. Said test was carried out at the Faculty of Chemical Sciences of the Autonomous University of Nuevo Leon and its results are shown in Table 1:

(30) TABLE-US-00001 TABLE 1 Results of chemical oxygen demand Chemical oxygen demand (mg/gr mta) 119.70 Estimated biochemical oxygen demand (mgO2/gr mta) 39.90 Biochemical measured oxygen demand (mgO2/gr mta) 37.25 Biodegradability % 93.36