Description:FIELD OF THE INVENTION
[0001] The present disclosure relates to a solar heat reflective water-proofing membrane. The present disclosure also provides a method of preparing a solar heat reflective water-proofing membrane.

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] Among the recent advancement in construction industry, it is a challenge to construct modern buildings that are environment friendly and help us to reduce greenhouse emissions. The total share of energy consumption in the building sector is around 36% of available energy in the world and it accounts for around 39% of CO2 emission, which is a critical issue regarding environment safety. Most places in the world today use air conditioners are used for cooling the work environment which is a major energy consumption source. To reduce the cooling load (reduce energy consumption) currently, wide range of technologies are offered for retrofitting of buildings. The few techniques are reflective coatings, sophisticated facades, well-sealed structures, highly insulated window frames, high insulation levels in walls and ceilings, and phase change substances. Reflective surfaces are gaining popularity for two reasons. The most effective technique for cooling is solar reflectance. The solar reflectance is measured by the solar reflective index which ranges from 70 to 106. The second technique for applying reflective coatings to opaque building surfaces is also the simplest passive measure because most of these coatings can be installed in the same way as ordinary paint. When a roof is retrofitted with a reflective coating, known as Cool roof. Several researchers around the world have studied these types of conditions by simulating the atmospheric conditions at different parts of world. The present reflective coatings available in the market can reduce the surface temperature of the exterior to interior surface area by 17-20 oC. The thermal conductivity of existing coating is between 0.685 to 0.821 W/m.K. which reduces energy consumption up to 6-7%.

OBJECTS OF THE INVENTION
[0004] An object of the present disclosure is to provide a solar heat reflective water-proofing membrane.
[0005] An object of the present disclosure is to provide a method of preparing a solar heat reflective water-proofing membrane.

SUMMARY OF THE INVENTION
[0006] 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.
[0007] Aspects of the present disclosure provide a solar heat reflective water-proofing membrane comprising: 30 to 50 wt. % of an acrylic polymer emulsion; 1 to 40 wt. % blended filler; 0.1 to 1 wt. % non ionic wetting and dispersing agent; 0.1 to 1 wt. % of viscosity modifying agent; 0.1 to 0.5 wt. % defoamer agent; 0.1 to 5 wt. % of additives; and 20 to 30 wt. % water.
[0008] In an aspects of the present disclosure provide a method of preparing a solar heat reflective water-proofing membrane comprising: mixing 0.1 to 1 wt. % of nonionic wetting and dispersing agent and 0.1 to 5 wt. % of additives with 20 to 30 wt. % of water to form a first mixture; adding 30 to 50 wt. % of acrylic polymer emulsion to the first mixture and followed by 1 to 40 wt. % of blended filler under condition to form a homogenous mixture; and mixing 0.1 to 0.5 wt. % of defoamer and 0.1 to 1 wt. % of viscosity modifying agent with the homogenous mixture to form a solar heat reflective water-proofing membrane.
[0009] Other aspects of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learnt by the practice of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1: illustrates developed Model of a Single Room in Revit Software.
[0011] Figure 2: illustrates modelling of Single Room in 3D Energy Model.

DETAILED DESCRIPTION OF THE INVENTION
[0012] The following is a detailed description of embodiments of the disclosure. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure.
[0013] 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.
[0014] 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.
[0015] In some embodiments, numbers have been used for quantifying weights, percentages, ratios, and so forth, to describe certain embodiments of the invention and 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. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[0016] Various terms as used herein are shown below. To the extent a term used 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.
[0017] As used in the description herein 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.
[0018] 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.”
[0019] 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.
[0020] All methods described herein can be performed in any 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.
[0021] 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 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. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified.
[0022] The description that follows, and the embodiments described therein, is provided by way of illustration of an example, or examples, of particular embodiments of the principles and aspects of the present disclosure. These examples are provided for the purposes of explanation, and not of limitation, of those principles and of the disclosure.
[0023] It should also be appreciated that the present disclosure can be implemented in numerous ways, including as a system, a method or a device. In this specification, these implementations, or any other form that the invention may take, may be referred to as processes. In general, the order of the steps of the disclosed processes may be altered within the scope of the invention.
[0024] The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments.
[0025] The following discussion provides many example embodiments of the inventive subject matter. Although each embodiment represents a single combination of inventive elements, the inventive subject matter is considered to include all possible combinations of the disclosed elements. Thus, if one embodiment comprises elements A, B, and C, and a second embodiment comprises elements B and D, then the inventive subject matter is also considered to include other remaining combinations of A, B, C, or D, even if not explicitly disclosed.
[0026] In an embodiment, the present disclosure provides solar heat reflective water-proofing membrane comprising: 30 to 50 wt. % of an acrylic polymer emulsion; 1 to 40 wt. % blended filler; 0.1 to 1 wt. % non ionic wetting and dispersing agent; 0.1 to 1 wt. % of viscosity modifying agent; 0.1 to 0.5 wt. % defoamer agent; 0.1 to 5 wt. % of additives; and 20 to 30 wt. % of water.
[0027] In an embodiment, the blended filler selected from a group consisting of magnesium oxide, titanium dioxide, calcium carbonate and aluminum silicate or combination thereof.
[0028] In an embodiment, the additives selected from a group consisting of tri-ethanol amine, coalescing agent, biocide, dry film foaming preservative, Poly-siloxane and essential oil or combination thereof.
[0029] In another embodiment, the present disclosure provides method of preparing a solar heat reflective water-proofing membrane comprising: mixing 0.1 to 1 wt. % of nonionic wetting and dispersing agent and 0.1 to 5 wt. % of additives with 20 to 30 wt. % of water to form a first mixture; adding 30 to 50 wt. % of acrylic polymer emulsion to the first mixture and followed by 1 to 40 wt. % of blended filler under condition to form a homogenous mixture; and mixing 0.1 to 0.5 wt. % of defoamer and 0.1 to 1 wt. % of viscosity modifying agent with the homogenous mixture to form a solar heat reflective water-proofing membrane.
[0030] In another embodiment, the condition includes stirring of acrylic polymer emulsion, first mixture and blended filler well till homogenous mix.
[0031] The developed Model of a Single Room in Revit Software is shown in Figure 1, that is used for energy modeling to understand the performance of Solar Heat-Reflective Water-proofing Membrane. Whereas, the modelling of Single Room in 3D Energy Model is shown in Figure 2, to find the reduction in cooling load.
[0032] In another embodiment, the formulation of the present invention contains combination and mixture of various raw materials in proper proportion by percent weight. Acrylic Polymer Emulsion between 30 to 50%, Water 20 to 30%, Titanium Dioxide 20 to 30%, Aluminum Silicate 2 to 10%, Coalescing Agent 0.1 to 0.4%, Non ionic wetting and dispersing agent 0.6 to 1%, Viscosity Modifying Agent 0.2 to 0.7%, Biocide 0.1 to 0.5%, Dry film forming preservative 0.1 to 0.5%, Defoamer Agent 0.15 to 0.35% and Essential Oil 0.1 to 0.3% respectively.
[0033] In another embodiment, the formulation of the present invention contains combination and mixture of various raw materials in proper proportion by percent weight. Acrylic Polymer Ester between 20 to 35%, Tri-Ethanol Amine 1 to 2%, Water 20 to 30%, Titanium Dioxide 0 to 20%, Calcium Carbonate 0 to 10%, Aluminum Silicate 2 to 5%, Coalescing Agent 0.2 to 0.3%, Nonionic wetting and dispersing agent 0.6 to 1%, Viscosity Modifying Agent 0.2 to 0.7%, Biocide 0.1 to 0.5%, Dry film forming preservative 0.3 to 0.5%, Defoamer Agent 0.15 to 0.35% and Essential Oil 0.1 to 0.3% respectively.
[0034] In another embodiment, the formulation of the present invention contains combination and mixture of various raw materials in proper proportion by percent weight. Acrylic Polymer Ester between 30 to 34%, Water 20 to 30%, Magnesium oxide 10 to 15%, Calcium Carbonate 10 to 14%, Aluminum Silicate 3 to 4%, Coalescing Agent 0.1 to 0.2%, Nonionic wetting and dispersing agent 0.3 to 0.7%, Viscosity Modifying Agent 0.2 to 0.7%, Biocide 0.3 to 0.5%, Dry film forming preservative 0.5 to 0.7%, Defoamer Agent 0.3 to 0.5% and Essential Oil 0.1 to 0.3% respectively.
[0035] In another embodiment, the formulation of the present invention contains combination and mixture of various raw materials in proper proportion by percent weight. Acrylic Polymer Ester between 35 to 45%, Water 20 to 30%, Titanium Dioxide 5 to 10%, Calcium Carbonate 5 to 9%, Aluminum Silicate 6 to 8%, Coalescing Agent 0.1 to 0.3%, Nonionic wetting and dispersing agent 0.4 to 0.8%, Viscosity Modifying Agent 0.3 to 0.6%, Biocide 0.2 to 0.5%, Dry film forming preservative 0.5 to 0.7%, Poly-Siloxane 0.3 to 0.5% and Essential Oil 0.1 to 0.2% respectively.
[0036] In an embodiment, the existing invention in the field of solar heat reflective membranes have thermal conductivity between 0.685 to 0.821 W/m.K. which is not very significant, and it reduces internal room temperatures by 17-20 oC and most of them act as a cool coat membrane only.
[0037] In an embodiment, the developed solar heat-reflective water-proofing membrane shows thermal conductivity of 0.582 W/m.K., whereas its solar reflective index is 114 which shows significant improvement in reflection of solar radiation hence it has a capacity to reduce variations between internal and external room temperature up to 25 oC. This is more effective in comparison to other available products. Secondly apart from heat reflective membrane, the material of present application acts as excellent water proofing membrane which gives concrete infrastructure/surface protection and enhances its life.
[0038] While the foregoing describes various embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.
EXAMPLES
[0039] 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. 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.
Example 1
[0040] Formulation of present invention contains combination and mixture of various raw materials in proper proportion by percent weight. Acrylic Polymer Emulsion between 50%, Water 20 %, Titanium Dioxide 20 %, Aluminum Silicate 8%, Coalescing Agent 0.4%, Non ionic wetting and dispersing agent 0.4%, Viscosity Modifying Agent 0.7%, Biocide 0.5%, Dry film forming preservative 0.5%, Defoamer Agent 0.2 % and Essential Oil 0.3% respectively.
Example 2
[0041] Formulation of present invention contains combination and mixture of various raw materials in proper proportion by percent weight. Acrylic Polymer Ester between 35%, Tri-Ethanol Amine 2%, Water 26%, Titanium Dioxide 20%, Calcium Carbonate 10%, Aluminum Silicate 4.6%, Coalescing Agent 0.2 %, Nonionic wetting and dispersing agent 1%, Viscosity Modifying Agent 0.2 %, Biocide 0.1 %, Dry film forming preservative 0.45%, Defoamer Agent 0.35% and Essential Oil 0.1% respectively.
Example 3
[0042] Formulation of present invention contains combination and mixture of various raw materials in proper proportion by percent weight. Acrylic Polymer Ester between 35%, Water 30%, Magnesium oxide 15%, Calcium Carbonate 14%, Aluminum Silicate 3%, Coalescing Agent 0.1%, Nonionic wetting and dispersing agent 0.5%, Viscosity Modifying Agent 0.7%, Biocide 0.3 %, Dry film forming preservative 0.7%, Defoamer Agent 0.5% and Essential Oil 0.2% respectively.
Example 4
[0043] Formulation of present invention contains combination and mixture of various raw materials in proper proportion by percent weight. Acrylic Polymer Ester between 45%, Water 25 %, Titanium Dioxide 10%, Calcium Carbonate 9%, Aluminum Silicate 8%, Coalescing Agent 0.2%, Nonionic wetting and dispersing agent 0.8%, Viscosity Modifying Agent 0.5%, Biocide 0.3%, Dry film forming preservative 0.5%, Poly-Siloxane 0.5% and Essential Oil 0.2% respectively.
Example 5
[0044] A solar heat reflective water-proofing membrane is prepared by mixing of 0.3 wt. % of nonionic wetting and dispersing agent and 0.3 wt. % of coalescing agent, 0.5 wt. % biocide, 0.7 wt % of dry film foaming preservative, 0.5 % of poly-siloxane and 0.2 wt . % of essential oil to 30 wt. % of water to form a first mixture. 50 wt. % of acrylic polymer emulsion is added to the first mixture and followed by 5 wt. % of titanium dioxide and 5 wt. % of calcium carbonate and stirring to form a homogenous mixture. 0.5 wt. % of defoamer and 1 wt. % of viscosity modifying agent with the homogenous mixture to form a solar heat reflective water-proofing membrane.
[0045] This invention has been described in terms of specific embodiments set forth in detail, but it should be understood that these are by way of illustration only and that the invention is not necessarily limited thereto. Modifications and variations will be apparent from this disclosure and may be achieved without departing from the scope of this invention, as those skilled in the art will readily understand. Accordingly, such variations and modifications of the disclosed embodiments are considered to be within the purview and scope of this invention and the following claims.
, Claims:1. A solar heat reflective water-proofing membrane comprising:
30 to 50 wt. % of an acrylic polymer emulsion;
1 to 40 wt. % blended filler;
0.1 to 1 wt. % non ionic wetting and dispersing agent;
0.1 to 1 wt. % of viscosity modifying agent;
0.1 to 0.5 wt. % defoamer agent;
0.1 to 5 wt. % of additives; and
20 to 30 wt. % of water.
2. The membrane as claimed in claim 1, wherein the blended filler selected from a group consisting of magnesium oxide, titanium dioxide, calcium carbonate and aluminum silicate or combination thereof.
3. The membrane as claimed in claim 1, wherein the additives selected from a group consisting of tri-ethanol amine, coalescing agent, biocide, dry film foaming preservative, Poly-siloxane and essential oil or combination thereof.
4. A method of preparing a solar heat reflective water-proofing membrane comprising:
mixing 0.1 to 1 wt. % of nonionic wetting and dispersing agent and 0.1 to 5 wt. % of additives with 20 to 30 wt. % of water to form a first mixture;
adding 30 to 50 wt. % of acrylic polymer emulsion to the first mixture and followed by 1 to 40 wt. % of blended filler under condition to form a homogenous mixture; and
mixing 0.1 to 0.5 wt. % of defoamer and 0.1 to 1 wt. % of viscosity modifying agent with the homogenous mixture to form a solar heat reflective water-proofing membrane.
5. The method as claimed in claim 4, wherein the blended filler selected from a group consisting of magnesium oxide, titanium dioxide, calcium carbonate and aluminum silicate or combination thereof.
6. The method as claimed in claim 4, wherein additives selected from a group consisting of tri-ethanol amine, coalescing agent, biocide, dry film foaming preservative, Poly-siloxane and essential oil or combination thereof.
7. The method as claimed in claim 4, wherein the condition includes stirring of acrylic polymer emulsion, first mixture and blended filler well till homogenous mix.