Claims:WE CLAIM:
1. A coating composition comprising oil, alkali hydroxide, liquid urea and solvent.
2. The composition as claimed in claim 1, wherein the oil is selected from a group comprising, coconut oil, sunflower oil, groundnut oil and combinations thereof.
3. The composition as claimed in claim 1, wherein the alkali hydroxide is selected from a group comprising potassium hydroxide, sodium hydroxide and combinations thereof.
4. The composition as claimed in claim 1, wherein the solvent is selected from a group comprising demineralized water, iso propyl alcohol and combinations thereof.
5. The composition as claimed in claim 1, wherein the oil is in an amount ranging from about 20% to 23%.
6. The composition as claimed in claim 1, wherein the alkali hydroxide is in an amount ranging from about 7% to 10%.
7. The composition as claimed in claim 1, wherein the liquid urea is in an amount ranging from about 38% to 42%.
8. The composition as claimed in claim 4, wherein the demineralized water is in an amount ranging from about 30% to 35%; and the isopropyl alcohol is in an amount ranging from about 1% to 2%.
9. The composition as claimed in claim 1, wherein the composition comprises oil, alkali hydroxide, liquid urea, demineralized water and isopropyl alcohol.
10. A method of preparing the coating composition as claimed in claim 1, said method comprises-
- mixing the oil and solution of the alkali hydroxide to obtain a mixture; and
- mixing the liquid urea and the mixture and adding solvent and continuing mixing to obtain the coating composition;
11. The method as claimed in claim 10, wherein the oil is heated prior to mixing with the solution of alkali hydroxide.
12. The method as claimed in claim 10, the mixing of alkali hydroxide and oil is carried out for a duration of about 7 minutes to 10 minutes, followed by subjecting to holding time of at least 6 hours.
13. The method as claimed in claim 10, wherein the mixing of the liquid urea and the mixture is carried out for a duration of about 2 minutes to 3 minutes, followed by heating for a duration ranging from about 7 minutes to 10 minutes.
14. An article comprising the coating composition as claimed in claim 1.
15. A method of preparing the article as claimed in claim 14, said method comprising- coating the composition as claimed in claim 1 on the article and followed by curing.
16. The method as claimed in claim 15, wherein the coating is carried out by techniques selected from a group comprising dip coating, roll coating, spray coating, spin coating, flow coating and combinations thereof.
17. A method for coating a substrate with the composition as claimed in claim 1 for obtaining crackled painting on the substrate, said method comprising-
- applying the composition on the substrate, followed by drying;
- applying supplementary paint composition to the dried substrate; and
- sanding the substrate until the crackled paint appears on the substrate.
18. The method as claimed in claim 17, wherein the substrate is selected from a group comprising car fender, display panel, dashboard and combinations thereof.
19. The method as claimed in claim 17, wherein the substrate is optionally subjected to sanding prior to application of the composition.
20. The method as claimed in claim 17, wherein the drying is carried out a temperature ranging from about 30 ºC to 45 ºC.
21. The method as claimed in claim 17, wherein the sanding is carried out by 800grit paper.
22. The method as claimed in claim 17, wherein coating selected from a group comprising glossy clear coat, candy tinter clear-coat, stain lacquer coat, matt finish coat and combinations thereof is optionally applied on the crackled paint of the substrate.

Dated this 30th day of March 2021
Signature:
Name: Sridhar R
To: Of K&S Partners, Bangalore
The Controller of Patents Agent for the Applicant
The Patent Office, at Kolkata IN/PA No. 2598

, Description:TECHNICAL FIELD
The present disclosure relates to field of coatings. Particularly, the present disclosure relates to coating composition which provides for crackling paint on a substrate. The disclosure further relates to preparing the said coating composition. The disclosure furthermore relates to an article comprising said composition and to a method of coating a substrate for obtaining crackled paint on the substrate.

BACKGROUND OF THE DISCLOSURE
Paint is an indispensable decorative material in modern life. The application of paint gives people a sense of beauty, touch, a colourful visual sense and makes the painted object beautiful, decorative and protective.

Paint is a kind of composition that is applied to the surface of an object to form a paint film that makes the object beautiful and protected or forms a film-like substance with other special functions on the surface of the object.

However, there is always a need for improving the paint composition for obtaining improved aesthetic appealing and protection.

SUMMARY OF THE DISCLOSURE
Accordingly, the present disclosure describes an environmentally friendly and improved coating composition comprising oil, alkali hydroxide, liquid urea and solvent, wherein said coating composition provides for crackled/patterned appearance on substrate.

In some embodiments, the present disclosure describes a method for preparing the composition, said method comprising-
- mixing oil and the solution of alkali hydroxide to obtain a mixture; and
- mixing liquid urea and the mixture and adding solvent and continuing mixing to obtain the coating composition.

In some embodiments, the present disclosure describes an article comprising the coating composition described above.

In some embodiments, the present disclosure describes a method of preparing the article, said method comprising- coating the composition on the article and followed by curing.

In some embodiments, the present disclosure describes a method for coating a substrate with the composition for obtaining crackled painting on the substrate, said method comprising-
- applying the composition on the substrate, followed by drying;
- applying supplementary paint composition to the dried substrate; and
- sanding the substrate until the crackled paint appears on the substrate.

BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES
In order that the present disclosure may be readily understood and put into practical effect, reference will now be made to exemplary embodiments as illustrated with reference to the accompanying figures. The figures together with detailed description below, are incorporated in and form part of the specification, and serve to further illustrate the embodiments and explain various principles and advantages, where:

FIGURE 1 provides images of crackled paint obtained by the coating composition of the present disclosure on substrate.

FIGURE 2 provides image illustrating the crackled paint adjacent to uncrackled paint (white).

DETAILED DESCRIPTION OF THE DISCLOSURE
Definitions:
Unless otherwise defined, all terms used in the disclosure, including technical and scientific terms, have meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, term definitions are included for better understanding of the present disclosure.

As used herein, the singular forms ‘a’, ‘an’ and ‘the’ include both singular and plural referents unless the context clearly dictates otherwise.

The term ‘comprising’, ‘comprises’ or ‘comprised of’ as used herein are synonymous with ‘including’, ‘includes’, ‘containing’ or ‘contains’ and are inclusive or open-ended and do not exclude additional, non-recited members, elements or method steps.
The recitation of numerical ranges by endpoints includes all numbers and fractions subsumed within the respective ranges, as well as the recited endpoints.

The term ‘about’ as used herein when referring to a measurable value such as a parameter, an amount, a temporal duration, and the like, is meant to encompass variations of ±10% or less, preferably ±5% or less, more preferably ±1% or less and still more preferably ±0.1% or less of and from the specified value, insofar such variations are appropriate to perform the present disclosure.

The term ‘crackled paint’ indicates a fine pattern of dense cracking formed on the surface of material/substrate.

The present disclosure relates to a composition, particularly to a coating composition.

In some embodiments of the present disclosure, the coating composition comprises oil, alkali hydroxide, liquid urea and solvent.

In some embodiments of the present disclosure, oil includes but not limited to vegetable oil, animal oil and oil from petrochemical origin.

In some embodiments of the present disclosure, oil includes but not limited to coconut oil, sunflower oil, and groundnut oil.

In some embodiments of the present disclosure, the alkali hydroxide is selected from a group comprising potassium hydroxide, sodium hydroxide and combinations thereof.

In some embodiments of the present disclosure, the solvent is selected from a group comprising demineralized water, isopropyl alcohol, and combinations thereof.

In some embodiments of the present disclosure, the oil is in an amount ranging from about 20% to 23%.

In some embodiments of the present disclosure, the oil is in an amount of about 20%, about 21%, about 22% or about 23%.

In some embodiments of the present disclosure, the alkali hydroxide is in an amount ranging from about 7% to 10%.

In some embodiments of the present disclosure, the alkali hydroxide is in an amount of about 7%, about 8%, about 9% or about 10%.

In some embodiments of the present disclosure, the liquid urea is in an amount ranging from about 38% to 42%.

In some embodiments of the present disclosure, the liquid urea is in an amount of about 38%, about 39%, about 40%, about 41% or about 42%.

In some embodiments of the present disclosure, the solvent, such as the demineralized water is in an amount ranging from about 30% to 35%.

In some embodiments of the present disclosure, the solvent, such as the demineralized water is in an amount of about 30%, about 31%, about 32%, about 33%, about 34% or about 35%.

In some embodiments of the present disclosure, the solvent, such as the isopropyl alcohol is in an amount ranging from about 1% to 2%.

In some embodiments of the present disclosure, the solvent, such as the isopropyl alcohol is in an amount of about 1%, about 1.1%, about 1.2%, about 1.3%, about 1.4%, about 1.5%, about 1.6%, about 1.7%, about 1.8%, about 1.9% or about 2%.

In some embodiments of the present disclosure, the composition comprises oil, alkali hydroxide, liquid urea, demineralized water and isopropyl alcohol.

In an exemplary embodiment of the present disclosure, the composition comprises vegetable oil, anhydrous potassium hydroxide, demineralized water, liquid urea and isopropyl alcohol.

In some embodiments of the present disclosure, the solvent, such as the isopropyl alcohol maintains surface tension of the coating composition and prevents sliding down upon application to a substrate.
The present disclosure further relates to a method of preparing the coating composition.

In some embodiments of the present disclosure, the method of preparing the coating composition comprises-
- mixing the oil and solution of the alkali hydroxide to obtain a mixture; and
- mixing the liquid urea and the mixture and adding solvent and continuing mixing to obtain the coating composition.

In some embodiments of the present disclosure, the oil is heated prior to mixing with the solution of alkali hydroxide.

In some embodiments of the present disclosure, the mixture of alkali hydroxide and oil is mixed for a duration of about 7 minutes to 10 minutes and is subjected to holding time for at least 6 hours, wherein saponification of oil takes place and the mixture gets converted into a thick paste of soap.

In some embodiments of the present disclosure, the mixing of the liquid urea and the mixture is carried out under heating until the turbidity disappears and clear solution is obtained, wherein the mixing is carried for about 2 minutes to 3 minutes and heating is carried out for a duration ranging from about 7 minutes to 10 minutes.

In some embodiments of the present disclosure, the method of preparing the coating composition comprises-
- heating the oil;
- mixing the heated oil and solution of alkali hydroxide to obtain a mixture, followed by holding the mixture for a duration of at least 6 hours;
- mixing the liquid urea and the mixture, followed by heating until the turbidity disappears and clear solution is obtained.
- adding the solvent, such as isopropyl alcohol and mixing to obtain the coating composition.

In some embodiments of the present disclosure, the method of preparing the coating composition comprises-
- heating the coconut oil;
- mixing the heated coconut oil and solution of potassium hydroxide to obtain a mixture, followed by holding the mixture for a duration of at least 6 hours;
- mixing the liquid urea and the mixture, followed by heating until turbidity disappears and clear solution is obtained.
- adding the isopropyl alcohol and mixing to obtain the coating composition.

The present disclosure further relates to an article comprising the coating composition described above.

In some embodiments of the present disclosure, the coating composition forms crackled paint on the article, which provides for protective coating and aesthetic appeal.

The present disclosure further relates to a method of preparing the article described above.

In some embodiments of the present disclosure, the method of preparing the article comprises- coating the composition described above and followed by curing.

In some embodiments of the present disclosure, the curing is carried out at a temperature ranging from about 15 ºC to 35 ºC, for a duration of at least 6hours.

In some embodiments of the present disclosure, the curing is carried out at room temperature for a duration of at least 6 hours.

In some embodiments of the present disclosure, the coating is carried out by techniques selected from a group comprising dip coating, roll coating, spray coating, spin coating, flow coating and combinations thereof.

The present disclosure further relates to a method of coating a substrate with the composition described above for obtaining crackled painting on the substrate,

In some embodiments of the present disclosure, the method of coating the substrate with the composition for obtaining crackled painting on the substrate comprises-
- applying the composition on the substrate, followed by drying;
- applying supplementary paint composition to the dried substrate; and
- sanding the substrate until the crackled paint appears on the substrate.
In some embodiments of the present disclosure, the composition is applied on the substrate by techniques including but not limited to dip coating, roll coating, spray coating, spin coating and flow coating.

In some embodiments of the present disclosure, the supplementary paint is applied on the substrate by techniques including but not limited to dip coating, roll coating, spray coating, spin coating and flow coating.

In some embodiments of the present disclosure, the substrate is subjected to sanding prior to application of the coating composition described above.

In some embodiments of the present disclosure, the drying is carried out a temperature ranging from about 30 ºC to 45ºC.

In some embodiments of the present disclosure, the drying is carried out at a temperature of about 30 ºC, about 31 ºC, about 32 ºC, about 33 ºC, about 34 ºC, about 35ºC, about 36 ºC, about 37 ºC, about 38 ºC, about 39 ºC, about 40 ºC, about 41 ºC, about 42 ºC, about 43 ºC, about 44 ºC or about 45 ºC.

In some embodiments of the present disclosure, the sanding is carried out by paper including but not limited to 800grip paper.

In some embodiments of the present disclosure, coating selected from a group comprising glossy clear coat, candy tinter clear-coat, stain lacquer coat, matt finish coat and combinations thereof can be applied on the crackled paint of the substrate.

In some embodiments of the present disclosure, the substrate is selected from a group comprising car fender, display panel, dashboard and combinations thereof.

In some embodiments of the present disclosure, the method of coating the substrate with the composition for obtaining crackled painting on the substrate comprises-
- sanding the substrate with 800grit paper;
- applying the composition described above on the sanded substrate for obtaining at least 3 coatings of the composition, followed by drying;
- applying supplementary paint composition on the dried substrate; and
- sanding the substrate until the crackled paint appears on the substrate.

In some embodiments of the present disclosure, the method of coating the substrate with the composition for obtaining crackled painting on the substrate comprises-
- sanding the substrate with 800grit paper;
- applying the composition described above on the sanded substrate for obtaining at least 3 coatings of the composition, followed by drying;
- applying supplementary paint composition on the dried substrate;
- sanding the substrate until the crackled paint appears on the substrate; and
- applying coating selected from a group comprising glossy clear coat, candy tinter clear-coat, stain lacquer coat, matt finish coat and combinations thereof.

In some embodiments of the present disclosure, the method of coating the substrate with the composition for obtaining crackled painting on the substrate comprises-
- sanding the substrate;
- applying first supplementary paint composition, followed by drying;
- applying the coating composition described above, followed by drying;
- sanding the dried substrate;
- applying second supplementary paint composition, followed by drying and sanding; and
- applying third supplementary pain composition.

In some embodiments of the present disclosure, the first supplementary paint composition, the second supplementary paint composition and the third supplementary paint composition are same or different.

It is to be understood that the foregoing description is illustrative not a limitation. While considerable emphasis has been placed herein on particular features of this disclosure, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. Those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein. Similarly, additional embodiments and features of the present disclosure will be apparent to one of ordinary skill in art based upon description provided herein.
Descriptions of well-known/conventional methods/steps and techniques are omitted so as to not unnecessarily obscure the embodiments herein. Further, the disclosure herein provides for examples illustrating the above-described embodiments, and in order to illustrate the embodiments of the present disclosure, certain aspects have been employed. The examples used herein for such illustration are intended merely to facilitate an understanding of ways in which the embodiments may be practiced and to further enable those of skill in the art to practice the embodiments. Accordingly, following examples should not be construed as limiting the scope of the embodiments herein.

EXAMPLE

1. Example 1: Preparation of the coating composition
About 45 g to 50 g of coconut oil was heated in a metal container on a heater. About 20 g to 25 g of anhydrous potassium hydroxide (KOH) was mixed with about 80 g to 100 g of demineralized water, followed by mixing for about 5 minutes to obtain KOH solution. The KOH solution was added to heated coconut oil and mixed well for about 7 minutes to 10 minutes and the mixture was subjected to holding time of about 6 hours. After about 6 hours liquid urea was added to the mixture and stirred for about 2 minutes to 3 minutes and heated for about 7 minutes to 10 minutes until the solution becomes clear, followed by cooling the solution. About 4 g to 5 g of isopropyl alcohol was added to the cooled solution to obtain the coating composition.

Example 2: Method of coating the composition for obtaining crackled paint on the composition
Sanding of a substrate such as car fender, display panel and dashboard with 800grit paper. Applying the coating composition prepared in Example 1 on the sanded surface of the substrate to obtain at least 3 coating layers of the composition, followed by drying at a temperature of about 30 ºC. Upon drying, star shaped cracks were developed on the substrate. Supplementary paint composition was applied on crackled paint, followed by sanding. An additional coating was applied on the surface of the substrate for protecting the crackled paint on the substrate.