Claims:1. An electro-magnetic radiation protection coating composition comprising:
a. nano-particles of graphite,
b. micro-particles of graphite,
c. carbon black,
d. activated charcoal,
e. indium-doped tin oxide, and
f. an alkyd based solvent medium, an organic medium or an acrylic based water medium.
2. The composition as claimed in claim 1, comprising:
a. nano-particles of graphite,
b. micro-particles of graphite,
c. carbon black,
d. activated charcoal,
e. indium-doped tin oxide,
f. an alkyd based solvent medium, an organic medium or an acrylic based water medium,
g. peroxides, and
h. additives.
3. The composition as claimed in claim 1, wherein the micro-particles and nano-particles of graphite are present in the range of 30% to 50% by weight of the composition.
4. The composition as claimed in claim 1, wherein the activated charcoal is present in the range of 0.1% to 5% by weight of the composition.
5. The composition as claimed in claim 1, wherein carbon black is present in the range of 2% to 6% by weight of the composition.
6. The composition as claimed in claim 1, wherein the indium-doped tin oxide is present in the range of 1% to 6% by weight of the composition.
7. The composition as claimed in claim 1, wherein the alkyd based solvent medium, the organic medium or the acrylic based water medium is present in the range of 30% to 70% by weight of the composition.
8. The composition as claimed in claim 2, wherein the peroxides are present in less than 2% by weight of the composition.

9. The composition as claimed in claim 2, wherein the additives are selected from the group comprising of quaternary ammonium salts, pigments, dyes, coloring agents, abrasion resistors, conductive polymers, flame retardants, dispersants, adhesives, curing agents, corrosion inhibitors and combinations thereof.
10. The composition as claimed in claim 2, wherein the additives are present in less than 4% by weight of the composition.
11. A process for preparing an electro-magnetic radiation protection coating composition comprising the steps of:
a) preparing a colloidal suspension of a base mix by mixing micro-particles of graphite, activated charcoal, carbon black and indium-doped tin oxide,
b) mixing the base mix with an alkyd based solvent medium, an organic medium or an acrylic based water medium, and
c) adding and stirring nano-particles of graphite into the mixture of step b) to give the electro-magnetic radiation protection coating composition.
12. The process as claimed in claim 11, comprising the steps of:
a) preparing a colloidal suspension of a base mix by mixing the micro-particles of graphite, activated charcoal, carbon black and indium-doped tin oxide,
b) mixing additives and peroxides with the alkyd based solvent medium, the organic medium or the acrylic based water medium,
c) blending the base mix with the mixture of step b), and
d) adding and stirring nano-particles of graphite into the blend of step c) to give the electro-magnetic radiation protection coating composition.
, Description:FIELD OF INVENTION
[0001] The present disclosure relates to the field of electromagnetic radiation protection coating. In particular the present disclosure relates to a composition for coating of surfaces, said composition being capable of interacting with and reducing high frequency electro-magnetic radiation (EMR) for example in residential and commercial buildings.

BACKGROUND OF THE INVENTION
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Electromagnetic radiation or EMR is a form of energy propagating through space having electric and magnetic components. It can be classified into various types based on their frequencies or wavelengths. These classifications in the increasing order of frequency are namely, radio waves, microwaves, infrared, visible light, ultraviolet radiation, X-rays and gamma rays. Different EMR frequencies interact differently with matter. The high frequency rays are particularly interactive and may penetrate bodies and lead to ionization or breaking of hydrogen bonds among other reactions.
[0004] There are a variety of sources of EMR in our everyday life. These include cell phones, microwave, power lines, wi-fi systems, and other electronic devices. With the advent of cellular technology, cellular phone towers have become a common sight. Statistics reveal a high concentration of these towers in urban, densely populated areas. Urban population is a high-risk group for EMR exposure as they are constantly exposed to radiation from these towers. Epidemiological studies have conclusively revealed several health hazards caused by radiation from cell phone towers; these range from symptoms such as dizziness, headache, nausea, sleep disorders, loss of appetite, depression, muscular spasms etc, to major diseases such as Alzheimer’s, Parkinson’s, cancer, damage to the DNA structure etc. Children are at an especially high risk as studies have conclusively proven that High Frequency EMR penetrates the skull of children to a much higher level. Therefore there is a need to control the exposure to these harmful waves.
[0005] Scientists have explored ways of countering or minimizing the exposure of human body to radiation. Some of the easy ways to do the same is to decrease the number of EMR devices in the house, increasing the distance between the object and the body and decreasing the time spent with these objects. However, in the twenty-first century which is heavily reliant on electronic gadgets and devices, these options may not be feasible. Research is being conducted in the field of developing electromagnetic radiation protection coating. Previously, mainly heavy metals like lead or bismuth were employed in the compositions for coatings. However, they are associated with heavy weights, limited molding capacity and difficulty in manufacturing. Additionally, with these compositions it is difficult to form thin coats. Further, magnetic fillers have also been used for preparing radiation protection compositions which also require heavy loadings and are therefore not favorable.
[0006] There is hence, an urgent need to minimize human exposure to harmful high frequency electromagnetic radiation via compositions that are easy to produce and are capable of shielding humans from these radiations.

OBJECTS OF THE INVENTION
[0007] An object of the present disclosure is to provide a composition for protection from electromagnetic radiation.
[0008] Another object of the present disclosure is to provide an electro-magnetic radiation protection coating composition which is capable of interacting with and appropriately conducting when connected to ground, the high frequency electro-magnetic radiation.
[0009] Another object of the present disclosure is to provide an electro-magnetic radiation protection coating composition which can be applied on concrete, wood and fabric surfaces.
[00010] Another object of the present disclosure is to provide an electro-magnetic radiation protection coating composition that can be used on cellular phone towers, residential and commercial buildings.
[00011] Another object of the present disclosure is to provide an electro-magnetic radiation protection coating composition that is inexpensive to manufacture, is stable and easy to handle.
[00012] Still another object of the present disclosure is to provide an electro-magnetic radiation protection coating composition that can be used as a base coat on most surfaces and other acrylic based emulsions or dyes can be used as a further coating on it without compromising its efficiency.

SUMMARY
[00013] This summary is provided to introduce a selection of concepts in a simplified form that are further described below in Detailed Description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
[00014] The present disclosure is related to an electro-magnetic radiation protection coating composition capable of interacting with and appropriately conducting when connected to ground, high frequency electro-magnetic radiation and thereby reducing electro-magnetic radiation in all types of buildings.
[00015] In an aspect of the present disclosure, there is provided an electro-magnetic radiation protection coating composition comprising:
a) nano-particles of graphite,
b) micro-particles of graphite,
c) activated charcoal,
d) carbon black,
e) indium-doped tin oxide, and
f) an alkyd based solvent medium, an organic medium or an acrylic based water medium.
[00016] In an embodiment, the nano-particles of graphite may fall in the size range of about 45 nm to about 100nm.
[00017] In another embodiment of the present disclosure, there is provided an electro-magnetic radiation protection coating composition comprising:
a) nano-particles of graphite,
b) micro-particles of graphite,
c) activated charcoal,
d) carbon black,
e) indium-doped tin oxide,
f) an alkyd based solvent medium, an organic medium or an acrylic based water medium,
g) peroxides, and
h) additives.
[00018] In an embodiment, the peroxides are compounds with the structure R1-OOH, wherein R1 may be selected from C1-C6 alkyl and benzoyl.
[00019] In an embodiment, the additives may be selected from quaternary ammonium salts like benzalkonium chloride, pigments, dyes, coloring agents, abrasion resistors, conductive polymers, flame retardants, dispersants, adhesives, curing agents, corrosion inhibitors, and combinations thereof.
[00020] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition is capable of interacting with, conducting to ground and thereby blocking high frequency electro-magnetic radiation.
[00021] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition is suitable for coating one or more of concrete, wood and specialized fabric surfaces to block radiation from all entities emanating microwave radiation.
[00022] In an aspect, the present disclosure provides a surface coated with the electro-magnetic radiation protection coating composition.
[00023] In another aspect of the present disclosure, there is provided a process for preparing an electro-magnetic radiation protection coating composition comprising the steps of:
a) preparing a colloidal suspension of a base mix by mixing micro-particles of graphite, activated charcoal, carbon black and indium-doped tin oxide,
b) mixing the base mix with an alkyd based solvent medium, an organic medium or an acrylic based water medium, and
c) adding and stirring nano-particles of graphite into the mixture of step b) to give the electro-magnetic radiation protection coating composition.
[00024] In another embodiment of the present disclosure, there is provided a process for preparing an electro-magnetic radiation protection coating composition comprising the steps of:
a) preparing a colloidal suspension of a base mix by mixing the micro-particles of graphite, activated charcoal, carbon black and indium-doped tin oxide,
b) mixing additives and peroxides with the alkyd based solvent medium, the organic medium or the acrylic based water medium,
c) blending the base mix with the mixture of step b), and
d) adding and stirring nano-particles of graphite into the blend of step c) to give the electro-magnetic radiation protection coating composition.
[00025] These and other aspects, features and advantages of the invention will be better understood with reference to the following description and appended claims. This summary is provided to introduce a selection of concepts in a simplified form that are further described below in Detailed Description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[00026] Figure 1: Test Set up for the experiment
[00027] Figure 2: Test Samples 1, 2 and 3 as per a preferred embodiment of the present disclosure
[00028] Figure 3: Plot of Insertion loss (dB) v/s frequency (GHz) for Samples 1 to 3 as per a preferred embodiment of the present disclosure

DETAILED DESCRIPTION OF THE INVENTION
[00029] Those skilled in the art will be aware that the present disclosure is subject to variations and modifications other than those specifically described. It is to be understood that the present disclosure includes all such variations and modifications. The disclosure also includes all such steps, features, compositions and compounds referred to or indicated in this specification, individually or collectively, and any and all combinations of any or more of such steps or features.
[00030] Unless the context requires otherwise, throughout the specification which follow, the word “comprise” and variations thereof, such as, “comprises” and “comprising” are to be construed in an open, inclusive sense that is as “including, but not limited to.”
[00031] Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[00032] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00033] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable.
[00034] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein.
[00035] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability.
[00036] All methods described herein can be performed in suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00037] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[00038] The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments.
[00039] Various terms are used herein. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[00040] The present disclosure relates to an electro-magnetic radiation protection coating (RPC) that is capable of interacting with, appropriately conducting, and, when connected, grounding radiation in all types of buildings. The RPC can be coated on one or more of concrete, wood and specialized fabric surface to block radiation from all entities emanating electro-magnetic radiation.
[00041] In an embodiment of the present disclosure, there is provided an electro-magnetic radiation protection coating composition comprising:
a) nano-particles of graphite,
b) micro-particles of graphite,
c) activated charcoal,
d) carbon black,
e) indium-doped tin oxide, and
f) an alkyd based solvent medium, an organic medium or an acrylic based water medium.
[00042] In an embodiment, the nano-particles of graphite may fall in the sizes ranging from 45nm to 100nm.
[00043] In an embodiment, the micro-particles of graphite may fall in the sizes ranging from 30µm to 100µm.
[00044] In an embodiment, the micro-particles and nano-particles of graphite may be present in the range of about 30% to about 50%, preferably about 40% by weight of the composition.
[00045] In an embodiment, the activated charcoal may be present in the range of about 0.1% to about 5%, preferably about 1% to about 3% by weight of the composition.
[00046] In an embodiment, carbon black may be present in the range of about 2% to about 6%, preferably about 3% to about 4% by weight of the composition.
[00047] In an embodiment, the indium-doped tin oxide may be present in the range of about 1% to about 6%, preferably about 3% by weight of the composition.
[00048] In an embodiment, the alkyd based solvent medium may be a mineral oil modified polyester selected from, but is not limited to, the group of paraffin oil modified polyester and white oil modified polyester.
[00049] In an embodiment, the acrylic based water medium may be selected from, but is not limited to, pure acrylic resins, acrylic acid ester, and methacrylic acid ester.
[00050] In an embodiment, the organic medium may be selected from, but is not limited to, hexane, mineral spirit and toluene.
[00051] In an embodiment, the alkyd based solvent medium, the organic medium or the acrylic based water medium that may be present in the range of about 30% to about 70%, preferably about 48% by weight of the composition.
[00052] In another embodiment of the present disclosure, there is provided an electro-magnetic radiation protection coating composition comprising:
a) nano-particles of graphite,
b) micro-particles of graphite,
c) activated charcoal,
d) carbon black,
e) indium-doped tin oxide,
f) an alkyd based solvent medium, an organic medium or an acrylic based water medium,
g) peroxides, and
h) additives.
[00053] In an embodiment, the peroxides may be compounds with the structure R1-OOH, wherein R1 is selected from C1-C6 alkyl and benzoyl.
[00054] In an embodiment, the peroxides may be present in less than 2% by weight of the composition.
[00055] In an embodiment, the additives may be selected from quaternary ammonium salts like benzalkonium chloride, pigments, dyes, coloring agents, abrasion resistors, conductive polymers, flame retardants, dispersants, adhesives, curing agents, corrosion inhibitors, and combinations thereof. The additives may be those well known in the art.
[00056] In an embodiment, the additives may be present in less than 4% by weight of the composition.
[00057] In an embodiment, the present disclosure provides a surface coated with the electro-magnetic radiation protection coating composition.
[00058] In an embodiment of the present disclosure, there is a process for preparing an electro-magnetic radiation protection coating composition comprising the steps of:
a) preparing a colloidal suspension of a base mix by mixing micro-particles of graphite, activated charcoal, carbon black and indium-doped tin oxide,
b) mixing the base mix with an alkyd based solvent medium, an organic medium or an acrylic based water medium, and
c) adding and stirring nano-particles of graphite into the mixture of step b) to give the electro-magnetic radiation protection coating composition.
[00059] In another embodiment of the present disclosure, there is provided a process for preparing an electro-magnetic radiation protection coating composition comprising the steps of:
a) preparing a colloidal suspension of a base mix by mixing the micro-particles of graphite, activated charcoal, carbon black and indium-doped tin oxide,
b) mixing additives and peroxides with the alkyd based solvent medium, the organic medium or the acrylic based water medium,
c) blending the base mix with the mixture of step b), and
d) adding and stirring nano-particles of graphite into the blend of step c) to give the electro-magnetic radiation protection coating composition.
[00060] In an embodiment of the present disclosure, the peroxides and additives increase base conductivity and give required viscosity to facilitate easy application.
[00061] In an embodiment of the present disclosure, the activated charcoal may be obtained from burning of coconut husk fibers, with high methane fuels in a controlled environment with additive herbs like desmostachya bipinnata and basil leaves.
[00062] In an embodiment, the additive herbs used for obtaining activated charcoal may be used in the weight range of about 2% to about 7%, preferably about 5% by weight with respect to the coconut husk fibers.
[00063] In an embodiment, the basil leaves used for obtaining activated charcoal may be used in the weight range of about 1% to about 5%, preferably about 3% by weight with respect to the coconut husk fibers.
[00064] In an embodiment of the present disclosure, the high methane fuel employed maybe bio fuels like organic cow dung. Preferably, activated charcoal may be obtained by burning of coconut husk fibers, with high methane fuels like organic Indic cow dung cakes in an oven with desmostachya bipinnata and Indic basil leaves.
[00065] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition is free from any heavy elements like lead, bismuth, barium, or tungsten. Thus, the composition does not have the limitations associated with heavy elements like limited molding capacity, difficulty in manufacturing and ability to form thin coats.
[00066] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition may be provided in the form of a gel, liquid, solid or semi-solid.
[00067] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition may be incorporated in paints, dyes, or wall papers.
[00068] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition is highly conductive.
[00069] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition successfully blocks, conducts and when connected, electrically grounds high frequency electro-magnetic radiation.
[00070] In an embodiment of the present disclosure, the electro-magnetic radiation that is shielded maybe microwave.
[00071] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition blocks radiation from all entities emanating microwave radiation, including but not limited to cell phone towers, radio or television transmitters and wireless networks.
[00072] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition is safe to use in residential, industrial and commercial areas.
[00073] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition is inexpensive to manufacture, is stable and easy to handle.
[00074] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition may be coated more than once on the surface, i.e. a plurality of coats may be applied to the surface.
[00075] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition may be applied over a painted surface or may be followed by a paint coating. It may be coated directly over the surface followed by a layer of acrylic paint or dye or wallpaper.
[00076] In an embodiment, the electro-magnetic radiation protection coating composition may be brushed, rolled, sprayed, dipped into or applied by any other practical methods.
[00077] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition can be used as a base coat on most surfaces (walls, wood, Plaster of Paris, fabrics) and other acrylic based emulsions or dyes can be used as a further coating on the electro-magnetic radiation protection coating composition without compromising it.
[00078] In an embodiment of the present disclosure, the electro-magnetic radiation protection coating composition provides over 99%, preferably up to 99.6% reduction of incident high frequency electro-magnetic radiation, in a simple cost-effective manner without any heavy elements such as Lead or its derivatives present.
[00079] In an embodiment, the electro-magnetic radiation protection coating composition gives extremely good attenuation of Microwave radiation in the frequency range of 500 MHz to 6000 MHz with minimum usage of expensive nano-materials.
[00080] Although the subject matter has been described in considerable detail with reference to certain preferred embodiments thereof, other embodiments are possible. The present disclosure satisfies the existing needs, as well as others, and generally overcomes the deficiencies found in the prior art.
[00081] The disclosure will now be illustrated with working examples, which is intended to illustrate the working of disclosure and not intended to take restrictively to imply any limitations on the scope of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this disclosure belongs. Although methods and materials similar or equivalent to those described herein can be used in the practice of the disclosed methods and compositions, the exemplary methods, devices and materials are described herein. It is to be understood that this disclosure is not limited to particular methods, and experimental conditions described, as such methods and conditions may vary.
Materials: Alkyd based resin was obtained from Varna Coats Pvt. Ltd, 73/38, 18th Cross, Doddanna Industrial Estate, Hegganahalli Main Road, Peenya, Bangalore 560091.
Example 1
Preparation of electro-magnetic radiation protection coating composition
[00082] 975 grams of 250 Mesh particles of Graphite was introduced into a mixing bowl to which 25 grams of activated charcoal, 100 grams of carbon black and 70 grams of indium-doped tin oxide were added to form a mixture. 1200 grams of alkyd based quick drying coating (QD Lacquer) with ether as a solvent was put in a vat and the additive (based on a quaternary ammonium compound) was added to the solvent. The dry powders were added to the solvent prepared in step 2. 25 grams of the nano-particles of graphite of around 60 nm size, suspended in a gum arabica surfactant stabilized with a polystyrene sulfonic acid was added to above mixture to increase the conductivity and to interact with higher frequency microwave radiation. The entire mixture was mixed continuously for 20 minutes using a high power vibration mixer.
Example 2
Preparation of electro-magnetic radiation protecting coating composition
[00083] 1100 grams of 250 mesh particles of Graphite was introduced into a mixing bowl and 100 grams of activated charcoal was added to the above mixture. 75 grams of indium doped tin oxide and 100 grams of Carbon black were then added. 1400 grams of pure acrylic binder with water as a solvent (90% Binder medium 10% Water) was put in a vat. The additive (PEDOT: PSS) was mixed together in a separate bowl and added to the vat. The dry powders of step 1 were added to the solvent prepared in step 2. 100 grams of nano-particles of graphite (60 nm size) suspended in a gum arabica surfactant stabilized with a polystyrene sulfonic acid was added to the above mixture. The entire mixture was mixed continuously for 20 minutes using a high power vibration mixer.
Example 3
Evaluation of the electro-magnetic radiation protection composition
[00084] To study the signal attenuation of signals in the thermal non-ionizing spectrum when passing through surfaces treated/coated with the electro-magnetic radiation protection composition paint samples:
[00085] FACILITIES REQUIRED FOR TESTING
a. Testing was carried out in Anechoic Chamber
b. Calibrated RF/Microwave Meter
c. Signal generator with Directional Antenna (Preferred) Dipole was used
d. Test materials to be tested
[00086] TEST PROCEDURE
[00087] The RPC (as per Example 1) paint coated 3mm ply wood samples were characterized using R&S vector network analyzer and anechoic chamber in the frequency range of 600MHz to 6GHz. The procedure followed for testing and validation of the paint, mesh and film samples were as follows:
i. The vector network analyzer was calibrated in the frequency range of 600MHz to 6GHz with 0dB input signal power. The same power level was maintained throughout the measurement.
ii. Two wideband horn antennas were used for transmission and reception of electromagnetic signal. The transmitting and receiving horn antennas were aligned in line of sight for maximum reception of the signal.
iii. The insertion loss measured with waveguide setup was considered as a reference result for comparison. The experimental setup is shown in Figure 1.
iv. Samples 1 to 3 are shown in Figure 2 with the following coatings:
Sample 1: 98 grams of RPC Coating (98 grams RPC used for 20cm X 20cm, 3mm thickness plywood board)
Sample 2: 63 grams of RPC Coating (63 grams RPC used for 20cm X 20cm, 3mm thickness plywood board)
Sample 3: 82 grams of RPC Coating (82 grams RPC used for 20cm X 20cm, 3mm thickness plywood board)
The samples were inserted between two waveguides independently and insertion loss was measured in the frequency range of 600MHz to 6GHz.
v. The insertion loss measured with differing frequencies for the samples was compared with the reference. The results are presented in Figure 3.
[00088] Result: Attenuation of between 10 dB to 15 dB was observed for Sample 1. Sample 2 and 3 demonstrated attenuation of 5-7 dB and 2-3 dB respectively.

ADVANTAGES OF THE PRESENT INVENTION
[00089] The electro-magnetic radiation protection coating composition provides over 99% reduction of incident high frequency electro-magnetic radiation, in a simple cost-effective manner without any heavy elements such as Lead or its derivatives present.
[00090] The electro-magnetic radiation protection coating composition is inexpensive to manufacture, is stable and easy to handle.
[00091] The electro-magnetic radiation protection coating composition can be used as a base coat on most surfaces (walls, wood, Plaster of Paris, fabrics) and other acrylic based emulsions or dyes can be used as a further coating on the RPC without compromising it.
[00092] The electro-magnetic radiation protection coating composition is highly conductive and works in a two pronged manner by a) interacting with the incident radiation to absorb, and b) conducting the electromagnetic waves incident on the coated surface to the electrical ground via suitable wiring.
[00093] The electro-magnetic radiation protection coating composition gives extremely good attenuation of microwave radiation in the frequency range of 500 MHz to 6000 MHz with minimum usage of expensive nano-materials.