Description:FORM 2
The Patents Act 1970
(39 of 1970)
&
The Patent Rules 2003
COMPLETE SPECIFICATION
(See Section 10 and rule 13)

TITLE OF THE INVENTION:
AN ECO-FRIENDLY AND NATURAL DISTEMPER WALL PAINT COMPOSITION AND METHOD OF PREPARATION THEREOF

APPLICANT
Name: AKS UNIVERSITY
Nationality: INDIAN
Address: DEPARTMENT OF BIOTECHNOLOGY, AKS UNIVERSITY, SATNA, Madhya Pradesh-485001, INDIA

PREAMBLE OF THE DESCRIPTION:
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED

A) TECHNICAL FIELD OF INVENTION
[001] The present invention generally relates to a wall paint composition and more particularly relates to the eco-friendly and natural distemper paint composition prepared from dried fallen leaves of guava plant or tree. The present invention further relates to a method of preparing the same.

B) BACKGROUND OF INVENTION
[002] Paint is a common home improvement item on the market today which is a potentially hazardous household product. Paint is a suspension of finely divided pigment particles in a liquid composed of a binder (resin), a volatile solvent or water, and additives that impart special characteristics. The volatile components evaporate from the drying film after application, while the binder holds the pigment in the dry film, causing it to adhere to the substrate.
[003] Traditional paints generally used now-a-days includes chemical paints. These chemical paints are made from volatile organic compounds (VOCs) that can pollute the air, cause negative side effects and even trigger allergic reactions. Emitted gases from certain solids or liquids, VOCs include a variety of chemicals that may include toluene, xylene, ethyl acetate, formaldehyde, methylene chloride and glycol. These chemicals can lead to indoor air quality problems and pose serious health risks.
[004] Some volatile organic compounds (VOCs) are known to cause cancer in animals and some are suspected or known to cause cancer in humans. Among the immediate symptoms that are sometimes experienced with exposure are eye irritation, nose and throat irritation, allergic skin reaction, nausea, headaches, dizziness, visual disorders, fatigue and memory impairment. VOCs exposure in indoor environments can irritate the eyes, throat, and nose, as well as cause headaches, dizziness, and potentially lead to memory loss or visual impairment. Higher level of exposure to volatile organic compounds (VOCs) for longer period of time especially by professional painters can lead to damage to the liver, kidney and nervous system.
[005] Volatile organic compounds (VOCs) are organic chemical compounds found in traditional paints that easily vaporise and reach in the environment under normal conditions. VOCs have increased volatility, mobility and they are resistant to degradation, being able to be transported to long distances in the environment. These volatile organic compounds (VOCs) of paints have damaging effects on environment as well as it increases landfill, groundwater, and ozone depleting contaminants. VOCs are an important pollutant because of their contribution to the formation of ground-level ozone. When VOCs are released into the atmosphere, they react with nitrogen oxides (NOx) and carbon monoxide (CO) to form tropospheric ozone (O3), often referred to as ground-level smog. This ground-level smog can stimulate diseases in plants, inhibit seed production, pollute environment, and hinder fertilization.
[006] VOCs are released when using paint products that contain them and, to some extent, when these products are stored. Even after application and drying, these paints release toxic emissions into air for many years to come. Traditional chemical paints become potentially hazardous when they contain these chemicals that can endanger human health or the environment.
[007] Thus, in order to solve the issue of environmental problems and harmful effects on human body, research has been conducted in past on natural non-toxic paints. Natural paints or eco-friendly paints are specifically designed to have zero or lower levels of VOCs. As a result, such paints improve the interior air quality, are beneficial to the environment, and eliminate the discomfort caused by the harmful chemicals present in traditional chemical paints.
[008] Several attempts have been made in the past to produce natural paints:
[009] US 20030183126 discloses a natural paint that is composed of vegetable drying oil, haze wax. candelilla wax and carnauba wax as the main components, and contains at least one or more of resin, silk powder and component of rice bran that can control volatilization of organic solvents, especially formaldehyde in a room.
[0010] WO/2002/077114 discloses a natural, oily resin composition comprising tung oil, linseed oil, rosin ester and citrus turpentine oil which exhibit a significantly reduced drying time and improved paint film stability and workability.
[0011] US 5,972,093 discloses the paint comprising pigments in a liquid solution chosenfrom the group of natural colouring earths; binders chosen from the group of milk, milk casein, egg white, egg yolk, starch paste and potato flour; compounds, mixed with said pigments and binders, chosen from the group of borax, kalinite, calcite, kaolin, slaked lime, mica and talc, sea salt and boron salts; and additives chosen from the group of vegetable oils, citrus-fruit juices, wine, vinegar and natural waxes.
[0012] None of the prior art particularly describes environment friendly paint composition with natural components especially plant derived ingredients.
[0013] In view of the foregoing disadvantages inherent in the prior art, it has been observed that there is a need to develop environment friendly paint composition utilizing plant derived ingredients that shows improved paint characteristics such as shine, grip and simultaneously should be eco-friendly with no harmful side effects.
[0014] The present disclosure overcome the problems in the art and provides an eco-friendly and natural distemper wall paint composition prepared utilizing dried fallen leaves of guava plant or tree, free from volatile organic compounds (VOCs) and harmful chemicals or solvents.
[0015] The value additions and above-mentioned shortcomings, disadvantages and problems are addressed herein, as detailed below.

C) OBJECTIVES OF INVENTION
[0016] The primary objective of the present invention is to provide environmentally friendly coating material for exterior as well as interior walls.
[0017] Another objective of the present invention is to provide an eco-friendly and natural distemper wall paint composition prepared utilizing dried fallen leaves of plants or trees.
[0018] Yet another objective of the present invention is to provide a poly-herbal formulation which is less harmful to environment and human body as it does not release excess of small toxic molecules when applied on exterior as well as interior walls.
[0019] Yet another objective of the present invention is to provide a cost-effective distemper paint composition with high durability.
[0020] Yet another objective of the present invention is to provide a natural paint composition which is free from volatile organic compounds (VOCs) and harmful chemicals or solvents.
[0021] Yet another objective of the present invention is to provide simple and less-time consuming method of preparingan eco-friendly and natural distemper wall paint composition.
[0022] These and other objectives and advantages of the embodiments herein will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings.

D) SUMMARY OF INVENTION
[0023] The various embodiments of the present invention provide an eco-friendly and natural distemper wall paint composition. The paint composition comprises an aqueous carboxy-methyl cellulose (CMC) mixture obtained from dried fallen leaves of a plant or a tree, a pigment, a plurality of fillers, one or more auxiliary agent, sodium benzoate and water.
[0024] According to an embodiment of the present invention, the dried fallen leaves is leaves of guava plant or tree.
[0025] According to an embodiment of the present invention, the ratio of CMC and water is 1:3.
[0026] According to an embodiment of the present invention, the said auxiliary agent is a thickener, a film forming agent, a binder, a dispersing agent.
[0027] According to an embodiment of the present invention, the thickener is hydroxyethyl cellulose.
[0028] According to an embodiment of the present invention, the film forming agent is mono-ethylene glycol.
[0029] According to an embodiment of the present invention, the binder is SLN binder.
[0030] According to an embodiment of the present invention, the dispersing agent is bondex T-580.
[0031] According to an embodiment of the present invention, the pigment is titanium dioxide.
[0032] According to an embodiment of the present invention, the pigment is present in an amount of 10% (w/v).
[0033] According to an embodiment of the present invention, the said filler is calcium carbonate and talcum powder.
[0034] According to an embodiment of the present invention, the calcium carbonate is present in an amount of 30% (w/v).
[0035] According to an embodiment of the present invention, the talcum powder is present in an amount of 10% (w/v).
[0036] According to an embodiment of the present invention, the thickener is present in an amount of 4% (w/v).
[0037] According to an embodiment of the present invention, the dispersing agent is present in an amount of 2% (w/v).
[0038] According to an embodiment of the present invention, the binder is present in an amount of 12% (w/v).
[0039] According to an embodiment of the present invention, the sodium benzoate is present in an amount of 12% (w/v).
[0040] According to another embodiment of the present invention, a method of preparing an eco-friendly and natural distemper wall paint composition is provided. The method comprises a) preparing an aqueous carboxy-methyl cellulose (CMC) mixture from dried fallen leaves of a plant or tree, b) adding a thickener to the aqueous carboxy-methyl cellulose (CMC) mixture, c) preparing a dispersion by adding one or more fillers and a pigment to the mixture of step (b) under continuous stirring at a high-speed ranging from 1000 rpm to 1100 rpm, d) keeping the dispersion at rest for a time period of one hour at room temperature, e) adding one or more auxiliary agent under continuous stirring at the slow speed ranging from 600 rpm to 700 rpm, f) adding sodium benzoate to the dispersion of step (e) under continuous stirring at the slow speed ranging from 500 rpm to 600 rpm, g) keeping the dispersion at rest for a time period of 10 minutes at room temperature, and h) adding a binder to the dispersion under continuous stirring at the slow speed ranging from 400 rpm to 500 rpm to obtain the distemper paint composition.
[0041] According to an embodiment of the present invention, the aqueous carboxy-methyl cellulose (CMC) mixture is prepared by process (A).
[0042] According to an embodiment of the present invention, the said auxiliary agent is a dispersing agent and a film forming agent.
[0043] According to an embodiment of the present invention, the process (A) comprises the steps of a) treating the powdered dried fallen leaves of plants or trees with acetic acid and a bleaching powder mixture, b) filtering the solution mixture of step (a) and collecting the filtrate, c) treating the filtrate again with the bleaching powder mixture, d) boiling the filtrate of step (c) with chloroacetic acid and alcohol at a temperature of 100?, e) filtering the solution mixture of step (d) and collecting the filtrate to obtain carboxy-methyl cellulose (CMC), and f) dissolving the obtained carboxy-methyl cellulose (CMC) in water to obtain aqueous carboxy-methyl cellulose (CMC) mixture.
[0044] According to an embodiment of the present invention, the bleaching powder mixture is 10% solution of a bleaching powder in 6N acetic acid.
[0045] According to an embodiment of the present invention, the bleaching powder is a combination of hydrogen peroxide and sodium hydroxide.
[0046] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

E) BRIEF DESCRIPTION OF DRAWINGS
[0047] The other objectives, features and advantages will occur to those skilled in the art from the following description of the preferred embodiment and the accompanying drawings in which:
[0048] FIG. 1 is a schematic representation showing the steps involved in the preparation of an eco-friendly and natural distemper wall paint composition, according to an embodiment of the present invention.
[0049] FIG. 1a is a schematic representation showing the steps involved in the preparation of an aqueous carboxy-methyl cellulose (CMC) mixture using process (A), according to an embodiment of the present invention.

F) DETAILED DESCRIPTION OF DRAWINGS
[0050] In the following detailed description, a reference is made to the accompanying drawings that form a part hereof, and in which the specific embodiments that may be practiced is shown by way of illustration. The embodiments are described in sufficient detail to enable those skilled in the art to practice the embodiments and it is to be understood that the logical, mechanical, electronic and other changes may be made without departing from the scope of the embodiments. The following detailed description is therefore not to be taken in a limiting sense.
[0051] According to an embodiment of the present invention, an eco-friendly and natural distemper wall paint composition, is provided. The paint composition comprises: an aqueous carboxy-methyl cellulose (CMC) mixture obtained from dried fallen leaves of a plant or tree, a pigment, a plurality of fillers, one or more auxiliary agent; sodium benzoate and water.
[0052] According to an embodiment of the present invention, the dried fallen leaves is leaves of guava plant or tree.
[0053] According to an embodiment of the present invention, the ratio of CMC and water is 1:3.
[0054] According to an embodiment of the present invention, the thickener is hydroxyethyl cellulose.
[0055] According to an embodiment of the present invention, the film forming agent is mono-ethylene glycol.
[0056] According to an embodiment of the present invention, the binder is SLN binder.
[0057] According to an embodiment of the present invention, the dispersing agent is bondex T-580.
[0058] According to an embodiment of the present invention, the pigment is titanium dioxide.
[0059] According to an embodiment of the present invention, the pigment is present in an amount of 10% (w/v).
[0060] According to an embodiment of the present invention, the said filler is calcium carbonate and talcum powder.
[0061] According to an embodiment of the present invention, the calcium carbonate is present in an amount of 30% (w/v).
[0062] According to an embodiment of the present invention, the talcum powder is present in an amount of 10% (w/v).
[0063] According to an embodiment of the present invention, the said auxiliary agent is a thickener, a film forming agent, a binder, a dispersing agent.
[0064] According to an embodiment of the present invention, the thickener is present in an amount of 4% (w/v).
[0065] According to an embodiment of the present invention, the dispersing agent is present in an amount of 2% (w/v).
[0066] According to an embodiment of the present invention, the binder is present in an amount of 12% (w/v).
[0067] According to an embodiment of the present invention, the sodium benzoate is present in an amount of 12% (w/v).
[0068] FIG. 1 is a schematic representation showing the steps involved in the preparation of an eco-friendly and natural distemper wall paint composition, according to an embodiment of the present invention. With respect to FIG. 1, the method comprises preparing an aqueous carboxy-methyl cellulose (CMC) mixture from dried fallen leaves of guava plant or tree by process (A) (101), adding a thickener to the aqueous carboxy-methyl cellulose (CMC) mixture (102), preparing a dispersion by adding one or more fillers and a pigment to the mixture under continuous stirring at the high-speed ranging from 1000 rpm to 1100 rpm (103), keeping the dispersion at rest for a time period of one hour at room temperature (104), adding one or more auxiliary agent under continuous stirring at slow speed ranging from 600 rpm to 700 rpm (105), adding sodium benzoate to the dispersion under continuous stirring at the slow speed ranging from 500 rpm to 600 rpm (106), keeping the dispersion at rest for a time period of 10 minutes at room temperature (107), and adding a binder to the dispersion under continuous stirring at the slow speed ranging from 400 rpm to 500 rpm to obtain the distemper paint composition (108).
[0069] According to an embodiment of the present invention, the aqueous carboxy-methyl cellulose (CMC) mixture is prepared by process (A).
[0070] According to an embodiment of the present invention, the said auxiliary agent is a dispersing agent and a film forming agent.
[0071] FIG. 1a is a schematic representation showing the steps involved in the preparation of an aqueous carboxy-methyl cellulose (CMC) mixture using process (A), according to an embodiment of the present invention. With respect to FIG. 1a, the process (A) comprises the steps of treating the powdered dried fallen leaves of plants or trees with acetic acid and a bleaching powder mixture (201), filtering the solution mixture of step (201) and collecting the filtrate (202), treating the filtrate again with the bleaching powder mixture (203), boiling the filtrate of step (203) with chloroacetic acid and alcohol at a temperature of 100? (204), filtering the solution mixture and collecting the filtrate to obtain carboxy-methyl cellulose (CMC) (205), dissolving the obtained carboxy-methyl cellulose (CMC) in water to obtain aqueous carboxy-methyl cellulose (CMC) mixture (206).
[0072] According to an embodiment of the present invention, the bleaching powder mixture is 10% solution of a bleaching powder in 6N acetic acid.
[0073] According to an embodiment of the present invention, the bleaching powder is a combination of hydrogen peroxide and sodium hydroxide.
[0074] According to an embodiment of the present invention, the thickener is hydroxyethyl cellulose.
[0075] According to an embodiment of the present invention, the said filler is calcium carbonate and talcum powder.
[0076] According to an embodiment of the present invention, the pigment is titanium dioxide.
[0077] According to an embodiment of the present invention, the film forming agent is mono-ethylene glycol.
[0078] According to an embodiment of the present invention, the binder is SLN binder.
[0079] According to an embodiment of the present invention, the dispersing agent is bondex T-580.
[0080] According to an embodiment of the present invention, the pigment is added in an amount of 10% (w/v).
[0081] According to an embodiment of the present invention, the calcium carbonate is added in an amount of 30% (w/v).
[0082] According to an embodiment of the present invention, the talcum powder is added in an amount of 10% (w/v).
[0083] According to an embodiment of the present invention, the thickener is added in an amount of 4% (w/v).
[0084] According to an embodiment of the present invention, the film-forming agent is added in an amount of 1% (w/v).
[0085] According to an embodiment of the present invention, the dispersing agent is added in an amount of 2% (w/v).
[0086] According to an embodiment of the present invention, the binder is added in an amount of 12% (w/v).
[0087] According to an embodiment of the present invention, the sodium benzoate is added in an amount of 12% (w/v).
EXAMPLES
[0088] The invention is now illustrated by way of non-limiting example(s).
Example 1
[0089] Example 1 illustrates formula to prepare 1 litre distemper paint composition using dried fallen leaves of guava plant or tree.
Ingredients Quantity
Carboxy-methyl cellulose (CMC) prepared from dried fallen leaves of guava plant or tree 250 mL
Tap water 750 mL
Hydroxyethyl cellulose (HEC) 40 grams
Calcium Carbonate 300 grams
Talcum powder 90 grams
Titanium dioxide (TiO2) 100 grams
Dispersing agent 40 mL
Mono ethylene glycol 10 mL
Sodium benzoate 80 grams
Binder 100 grams

[0090] Example 2 illustrates formula to prepare 1 litre distemper paint composition using dried fallen leaves of guava plant or tree.
Ingredients Quantity
Carboxy-methyl cellulose (CMC) prepared from dried fallen leaves of guava plant or tree 250 mL
Tap water 750 mL
Hydroxyethyl cellulose (HEC) 40 grams
Calcium Carbonate 300 grams
Talcum powder 100 grams
Titanium dioxide (TiO2) 100 grams
Dispersing agent 20 mL
Mono ethylene glycol 10 mL
Sodium benzoate 120 grams
Binder 120 grams

G) ADVANTAGES OF INVENTION
[0091] The present invention relates to an eco-friendly and natural distemper wall paint composition. The wall paint composition of the present invention is environmentally friendly wall coating material since it is prepared utilizing dried fallen leaves of plants or trees. The said natural paint composition is free from volatile organic compounds (VOCs) and harmful chemicals or solvents. The said wall paint composition of the present invention is less harmful to environment and human body as it does not release excess of small toxic molecules when applied on exterior as well as interior walls. The wall paint composition of the present invention is cost effective distemper paint with high durability.
[0092] The method of preparing an eco-friendly and natural distemper wall paint composition of the present invention does not involve use of any hazardous materials and adopted greener way of preparation making the process simple, cost-effective and less time consuming.
[0093] It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the claims presented in the complete specification or non-provisional application.
, Claims:Claims:
We claim:
1. An eco-friendly and natural distemper wall paint composition, comprises:
a) an aqueous carboxy-methyl cellulose (CMC) mixture obtained from dried fallen leaves of a plant or a tree, wherein the dried fallen leaves is leaves of guava plant or tree;
b) a pigment, wherein the pigment is titanium dioxide;
c) a plurality of filler, wherein the said filler is calcium carbonate and talcum powder;
d) one or more auxiliary agent, wherein the said auxiliary agent is a thickener, a film forming agent, a binder, a dispersing agent;
e) sodium benzoate; and
f) water.
2. The wall paint composition as claimed in claim 1, wherein the ratio of CMC and water is 1:3.
3. The wall paint composition as claimed in claim 1, wherein the thickener is hydroxyethyl cellulose, wherein the film forming agent is mono-ethylene glycol, wherein the binder is SLN binder, and wherein the dispersing agent is bondex T-580.
4. The wall paint composition as claimed in claim 1, wherein the pigment is present in an amount of 10% (w/v), wherein the calcium carbonate is present in an amount of 30% (w/v), and wherein the talcum powder is present in an amount of 10% (w/v).
5. The wall paint composition as claimed in claim 1, wherein the thickener is present in an amount of 4% (w/v), wherein the film-forming agent is present in an amount of 1% (w/v), wherein the dispersing agent is present in an amount of 2% (w/v), and wherein the binder is present in an amount of 12% (w/v).
6. The wall paint composition as claimed in claim 1, wherein the sodium benzoate is present in an amount of 12% (w/v).
7. A method of preparing an eco-friendly and natural distemper wall paint composition, comprises:
preparing an aqueous carboxy-methyl cellulose (CMC) mixture from dried fallen leaves of guava plant or tree, wherein the aqueous carboxy-methyl cellulose (CMC) mixture is prepared by process (A) (101);
adding a thickener to the aqueous carboxy-methyl cellulose (CMC) mixture (102);
preparing a dispersion by adding one or more fillers and a pigment to the mixture of step (102) under continuous stirring at a high-speed ranging from 1000 rpm to 1100 rpm (103);
keeping the dispersion at rest for a time period of one hour at room temperature (104);
adding one or more auxiliary agent under continuous stirring at slow speed ranging from 600 rpm to 700 rpm (105), wherein the said auxiliary agent is a dispersing agent and a film forming agent;
adding sodium benzoate to the dispersion of step (105) under continuous stirring at slow speed ranging from 500 rpm to 600 rpm (106);
keeping the dispersion at rest for a time period of 10 minutes at room temperature (107); and
adding a binder to the dispersion under continuous stirring at slow speed ranging from 400 rpm to 500 rpm to obtain the distemper paint composition (108).
8. The method as claimed in claim 7, wherein the process (A) comprises the steps of:
treating the powdered dried fallen leaves of plants or trees with acetic acid and a bleaching powder mixture (201);
filtering the solution mixture of step (201) and collecting the filtrate (202);
treating the filtrate again with the bleaching powder mixture (203);
boiling the filtrate of step (203) with chloroacetic acid and alcohol at a temperature of 100? (204);
filtering the solution mixture of step (204) and collecting the filtrate to obtain carboxy-methyl cellulose (CMC) (205); and
dissolving the obtained carboxy-methyl cellulose (CMC) in water to obtain aqueous carboxy-methyl cellulose (CMC) mixture (206), wherein the ratio of CMC and water is 1:3.
9. The method as claimed in claim 8, wherein the bleaching powder mixture is 10% solution of a bleaching powder in 6N acetic acid, and wherein the bleaching powder is a combination of hydrogen peroxide and sodium hydroxide.
10. The method as claimed in claim 7, wherein the thickener is hydroxyethyl cellulose, and wherein the thickener is added in an amount of 4% (w/v).
11. The method as claimed in claim 7, wherein the said filler is calcium carbonate and talcum powder, wherein the calcium carbonate is added in an amount of 30% (w/v), wherein the talcum powder is added in an amount of 10% (w/v), wherein the pigment is titanium dioxide and wherein the pigment is added in an amount of 10% (w/v).
12. The method as claimed in claim 7, wherein the film forming agent is mono-ethylene glycol, and wherein the film-forming agent is added in an amount of 1% (w/v), wherein the binder is SLN binder and wherein the binder is added in an amount of 12% (w/v).
13. The method as claimed in claim 7, wherein the dispersing agent is bondex T-580 and wherein the dispersing agent is added in an amount of 2% (w/v), and wherein the sodium benzoate is added in an amount of 12% (w/v).