DESC:FIELD OF THE INVENTION
[0001] The present disclosure relates generally to the field of phase changing material (PCM). Particularly, the present disclosure relates to a process for preparation of form stabilized temperature regulating polymeric retrofits of organic materials.

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] A phase change material (PCM) is a substance that releases/absorbs sufficient energy during phase transition to provide useful thermal regulation. Generally, the transition will be from one of the first two fundamental states of matter - solid and liquid - to the other at a particular temperature. The phase transition may also be between non-classical states of matter, such as the conformity of crystals, where the material goes from conforming to one crystalline structure to conforming to another, which may be a higher or lower energy state. By melting and solidifying at the phase change temperature (PCT), a PCM is capable of storing and releasing large amounts of energy compared to sensible heat storage. Heat is absorbed or released when the particle changes from solid to liquid and vice versa or when the internal structure of the material changes. The PCM embedded in a polymer matrix where the complete material does not undergo the phase change into the liquid state is called as Form Stabilized Panel (FSP), alternatively and synonymously referred to as form stabilized temperature regulating polymeric retrofits hereinafter.
[0004] The form stabilized panel finds application in multiple areas where energy storage and/or stable temperatures are required, including, among others, construction materials, heating pads, panels, temperature-controlled packaging solutions for temperature-sensitive pharmaceutical products and perishable food items, cooling for telephone switching boxes, cosmetic products like capsules in lotions, facewash, perfumes and scrub solutions, and clothing. Since PCM transform between solid and liquid in thermal cycling, therefore, encapsulation naturally became the obvious choice to prevent the leakage of PCM.
[0005] Different methods of form stabilization are reported in the literature. However, none of the current approaches/reports seems to satisfy the existing needs and leads to leakage of PCM due to mechanical pressure, sudden rise in temperature, encapsulation rupture during crystal growth patterns, and fatigue stresses generated during melting and freezing cycles. In conventional processes, the reactants are processed at higher temperature, resulting in degradation of the reactant as well the final product, form stabilized panel.
[0006] CA1304873C, focuses on form stable PCM of long alkyl chain phase change material such as fatty acid or paraffin wax with polymer matrix of Polyolefin (polyethylene (high or low-density), polypropylene, polybutene, crystalline polystyrene or poly(4-methyl-pentene-1)).
[0007] CN111394066A reports form stable paraffin or myristic acid with polymer matrix of styrene-butadiene block copolymer (SBS) or a hydrogenated styrene-butadiene block copolymer (SEBS). The organic phase change material is heated to 80-90 °C to melt it, adding the thermoplastic elastomer and heating and stirring at 120-140 °C for 30-50 min, carrying out ultrasonic treatment at 80-90 °C and 28-53 kHz for 20-30 min. The material is transferred to a mold and cooling to 20-30 ? for more than 30 min and forming and obtaining the material after complete solidification.
[0008] US2013228308A1 reports coated pallets based form stable organic PCM of paraffins, fatty acids, fatty acid esters, fatty alcohols, sugar alcohols, or glycols with polymer matrix of thermoplastic polymer (high-density polyethylene). Organic PCM and a polymer are fed to an extruder to form a homogenous molten plastic compound, extruding the molten plastic compound through a die to form an extrudate. Cooling and cutting the extrudate into pellets and further coating the pellets.
[0009] CN107936930A reports paraffin, fatty acid or sugar alcohol PCMs with high density polyethylene (HDPE) polymer matrix. High density polyethylene (HDPE) is dissolved in an organic solvent at 120-130 °C and the organic phase change material is added and solution stirred until the mixture is fully mixed, the mixture is then dried in a constant temperature oven at 100-110 °C to obtain the polymer-shaped composite phase change material.
[00010] There is therefore an unmet need in the art to develop a new and improved process for preparing form stabilized temperature regulating polymeric retrofits that may overcome one or more limitations associated with existing processes. The present invention satisfies the existing needs, as well as others, and generally overcomes the deficiencies found in the prior art.

OBJECTIVE OF THE INVENTION
[00011] It is an object of the present disclosure to provide a process for preparing form stabilized temperature regulating polymeric retrofits that may overcome one or more limitations associated with the conventional processes.
[00012] It is an object of the present disclosure to provide a process to prepare form stabilized temperature regulating polymer retrofits that is economical, easy to carry out and is not time consuming.
[00013] It is another object of the present disclosure to provide a process for preparing form stabilized temperature regulating polymeric retrofits that is safe and environmentally friendly.
[00014] It is an object of the present disclosure to provide a process that carries out the preparation of PCM at low temperature, preventing degradation of the reactants and the final product, form stabilized temperature regulating polymer retrofits.
[00015] It is an object of the present disclosure to provide a process wherein the contents of the PCM are packed and processed in the same container in which it is packed, therefore does not involve product handling complications.
[00016] It is an object of the present disclosure to provide a process which is safe for manufacturing because the process does not involve any health hazards as there are negligible risk of overshooting of temperature, or fire hazards due to fuming organic materials closer to the flash point.
SUMMARY OF THE INVENTION
[00017] The present disclosure relates generally to the field of PCM. Particularly, the present disclosure relates to a process for preparing form stabilized temperature regulating polymer retrofits of organic materials.
[00018] An aspect of the present disclosure relates to a process for preparing a form stabilized temperature regulating polymer retrofit, the process comprising the steps of:
(a) preparing a slurry by mixing one or more polymers and one or more organic materials at a first temperature;
(b) encapsulating the slurry;
(c) optionally, compressing the encapsulated slurry;
(d) exposing the encapsulated slurry to a second temperature ranging from about 60°C to 200°C for a time period ranging from about 30 minutes to about 10 hours; and
(e) allowing the heated slurry to cool down to a third temperature ranging from about 2°C to about 35°C to obtain the form stabilized temperature regulating polymer retrofit.
[00019] In an embodiment, the slurry was prepared at the first temperature ranging from about 35°C to about 85°C, preferably, at a temperature ranging from about 60°C to about 70°C.
[00020] In some embodiments, the polymers and organic materials are mixed in a ratio of 9:1
[00021] In some embodiments, the organic PCM and polymer are processed to form a form stable PCM by an in situ reaction mechanism and contents of the PCM are packed and processed in the same container in which it is packed.
[00022] In some embodiments, the one or more polymers is selected from any or a combination of polystyrene, High-density polyethylene (HDPE), Low-density polyethylene (LDPE), Ethylene vinyl alcohol (EVOH), Styrene-butadiene block copolymer (SBS) or a hydrogenated styrene-butadiene block copolymer (SEBS) and polymethyl methacrylate (PMMA).
[00023] In some embodiments, the one or more organic materials is selected from any or a combination of paraffin, fatty acid, fatty alcohol and fatty ester.
[00024] In some embodiments, the step of encapsulation comprises filling the slurry in a mold.
[00025] In some embodiments, the slurry has a viscosity ranging from about 50 to 1000 cps.
[00026] In some embodiments, the step of encapsulation comprises filling the slurry in a container and sealing the container;
wherein, the container is a rigid container or a flexible container.
[00027] In some embodiments, the encapsulated slurry is compressed at a weight ranging from about 0.5 to 5 kg/cm2, preferably from about 2 to 5 kg/cm2 and more preferably from about 3 to 5 kg/cm2.
[00028] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments.

DETAILED DESCRIPTION OF THE INVENTION
[00029] 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 spirit and scope of the present disclosure.
[00030] The embodiments herein and the various features and advantageous details thereof are explained more comprehensively with reference to the non-limiting embodiments that are detailed in the following description. Descriptions of well-known components and processing techniques are omitted to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of the ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[00031] Unless otherwise specified, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skills in the art to which this invention belongs. By means of further guidance, term definitions may be included to better appreciate the teaching of the present invention.
[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] As used herein, the terms “comprise”, “comprises”, “comprising”, “include”, “includes”, and “including” are meant to be non- limiting, i.e., other steps and other ingredients which do not affect the end of result can be added. The above terms encompass the terms “consisting of” and “consisting essentially of”.
[00034] The terms “weight percent”, “vol-%”, “percent by weight”, “% by weight”, and variations thereof, as used herein, refer to the concentration of a substance as the weight of that substance divided by the total weight of the composition and multiplied by 100. It is understood that, as used here, “percent”, “%”, and the like are intended to be synonymous with “weight percent”, “vol-%”, etc.
[00035] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, 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.
[00036] 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. The numerical values of various parameters given in the specification are at approximations and slightly higher or slightly lower values of these parameters fall within the ambit and the scope of the invention.
[00037] The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments.
[00038] 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.
[00039] The methods of the appended claims are not limited in scope by the specific method(s) described herein, which are intended as illustrations of a few aspects of the claims and any compositions and methods that are functionally equivalent are intended to fall within the scope of the claims. Various modifications of the compositions and methods in addition to those shown and described herein are intended to fall within the scope of the appended claims. Further, while only certain representative compositions and method steps disclosed herein are specifically described, other combinations of the compositions and method steps also are intended to fall within the scope of the appended claims, even if not specifically recited.
[00040] 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 otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00041] The present disclosure relates generally to the field of phase changing material. Particularly, the present disclosure relates to a process for preparing form stabilized temperature regulating polymer retrofits.
[00042] The present disclosure focuses on making a composite of organic PCMs of paraffins, fatty acids, fatty acid esters, and fatty alcohols with polymeric matrix Styrene-butadiene block copolymer (SBS) or a hydrogenated styrene-butadiene block copolymer (SEBS).
[00043] According to the present disclosure, Organic PCM and polymer matrix are mixed and passed through a screw extruder at a temperature range of 120 to 150 °C, transferring to a mold, cooling to room temperature to obtain a form stable PCM.
[00044] According to the present disclosure, another method is to mix an organic PCM with the polymeric matrix (SBS or SEBS) in the temperature range of 60 to 90°C. The mixture is transferred to the hopper of an injection molding, passing the mixture through the injection molding barrel at temperature of 120 to 150°C, transferring to a mold, cooling to room temperature to room temperature to obtain a form stable PCM.
[00045] An aspect of the present disclosure relates to a process for preparing a form stabilized temperature regulating polymer retrofit, the process comprising the steps of:
(a) preparing a slurry by mixing one or more polymers and one or more organic materials at a first temperature;
(b) encapsulating the slurry;
(c) optionally, compressing the encapsulated slurry;
(d) exposing the encapsulated slurry to a second temperature ranging from about 60°C to 200°C for a time period ranging from about 30 minutes to about 10 hours; and
(e) allowing the heated slurry to cool down to a third temperature ranging from about 2°C to about 35°C to obtain the form stabilized temperature regulating polymer retrofit.
[00046] In an embodiment, the slurry was prepared at the first temperature ranging from about 35°C to about 85°C, preferably, at a temperature ranging from about 60°C to about 70°C.
[00047] In some embodiments, the polymers and organic materials are mixed in a ratio of 9:1
[00048] In some embodiments, the organic PCM and polymer are processed to form a form stable PCM by an in situ reaction mechanism and contents of the PCM are packed and processed in the same container in which it is packed.
[00049] In some embodiments, the one or more polymers is selected from any or a combination of polystyrene, High-density polyethylene (HDPE), Low-density polyethylene (LDPE), Ethylene vinyl alcohol (EVOH), Styrene-butadiene block copolymer (SBS) or a hydrogenated styrene-butadiene block copolymer (SEBS) and polymethyl methacrylate (PMMA). In preferred embodiments, the one or more polymers is Styrene-butadiene block copolymer (SBS) or a hydrogenated styrene-butadiene block copolymer (SEBS or Styrene Ethylene Butadiene Styrene).
[00050] In some embodiments, the one or more organic materials is selected from any or a combination of paraffin, fatty acid, fatty alcohol and fatty ester.
[00051] In preferred embodiments, the fatty acid is selected from Caprylic acid, Capric acid, Lauric acid, Myristic acid, Palmitic acid, Stearic acid, Arachidic acid and Behenic acid, Myristoleic acid, Palmitoleic acid. Sapienic acid, Oleic acid, Elaidic acid, Vaccenic acid, Linoleic acid, Linoelaidic acid, a-Linolenic acid, Arachidonic acid, Eicosapentaenoic acid, Erucic acid, Docosahexaenoic acid or combinations thereof.
[00052] In preferred embodiments, the fatty alcohol is selected from tert-Butyl alcohol, tert-Amyl alcohol, 3-Methyl-3-pentanol, 1-Heptanol (enanthic alcohol), 1-Octanol (capryl alcohol), Pelargonic alcohol (1-nonanol), 1-Decanol (decyl alcohol, capric alcohol), Undecyl alcohol (1-undecanol, undecanol, Hendecanol), Lauryl alcohol (dodecanol, 1-dodecanol), Tridecyl alcohol (1-tridecanol, tridecanol, isotridecanol), Myristyl alcohol (1-tetradecanol), Pentadecyl alcohol (1-pentadecanol, pentadecanol), Cetyl alcohol (1-hexadecanol), Palmitoleyl alcohol (cis-9-hexadecen-1-ol), Heptadecyl alcohol (1-n-heptadecanol, heptadecanol), Stearyl alcohol (1-octadecanol), Oleyl alcohol (1-octadecenol), Nonadecyl alcohol (1-nonadecanol), Arachidyl alcohol (1-eicosanol), Heneicosyl alcohol (1-heneicosanol), Behenyl alcohol (1-docosanol), Erucyl alcohol (cis-13-docosen-1-ol), Lignoceryl alcohol (1-tetracosanol), Ceryl alcohol (1-hexacosanol), 1-Heptacosanol, Montanyl alcohol, cluytyl alcohol, or 1-octacosanol, 1-Nonacosanol, Myricyl alcohol, melissyl alcohol, or 1-triacontanol, 1-Dotriacontanol (Lacceryl alcohol), Geddyl alcohol (1-tetratriacontanol) or combinations thereof.
[00053] In preferred embodiments, the fatty ester is selected from wax esters such as beeswax, carnauba wax, and candelilla wax. In other embodiments, the fatty ester is selected from Ethyl decanoate, Ethyl decadienoate, Ethyl macadamiate, Ethylhexyl palmitate, Ascorbyl palmitate, Ascorbyl stearate, Butyl oleate, Cetyl myristoleate, Cetyl palmitate, Cetyl tranexamate mesylate, SN2 Palmitate, Sorbitan monooleate, Sorbitan monopalmitate or combinations thereof.
[00054] In some embodiments, the step of encapsulation comprises filling the slurry in a mold.
[00055] In some embodiments, the slurry has a viscosity ranging from about 50 to 1000 cps. In some embodiments, the slurry has a viscosity ranging from about 50 to 1000 cps, including, about 80 to 950 cps, about 90 to 900 cps, about 100 to 900 cps, about 120 to 850 cps, or about 150 to 800 cps.
[00056] In some embodiments, the step of encapsulation comprises filling the slurry in a container and sealing the container;
wherein, the container is a rigid container or a flexible container.
[00057] In some embodiments, the encapsulated slurry is compressed at a weight ranging from about 0.5 to 5 kg/cm2, preferably from about 2 to 5 kg/cm2 and more preferably from about 3 to 5 kg/cm2.
[00058] In some embodiments, the slurry was prepared by mixing said one or more polymers and said one or more organic materials in a jacketed mixer, said mixer comprising one or more stirrers configured to scrap solid materials deposited on the inner wall of the mixer. Any conventional stirrers such as anchor type stirrers, as known to or appreciated by the person skilled in the art is used to serve the intended purpose.
[00059] In some embodiments, the first temperature is maintained by circulating cold water within jacket of the mixer. The cold water within jacket of the mixer prevents plasticization of the one or more polymers.
[00060] In some embodiments, the step of encapsulation comprises filling the slurry in a container; and sealing the container.
[00061] In some embodiments, the container is a rigid container, wherein the step of compressing the encapsulated slurry is precluded.
[00062] In some embodiments, the container is a flexible container, wherein the encapsulated slurry is compressed.
[00063] In some embodiments, the encapsulated slurry is exposed to the second temperature ranging from about 65°C to about 75°C for a time period ranging from about 60 minutes to about 6 hours.
[00064] In some embodiments, the encapsulated slurry is exposed to the second temperature ranging from about 120°C to about 150°C.
[00065] In some embodiments, the encapsulated slurry is exposed to the second temperature ranging from about 180°C to about 200°C.
[00066] In some embodiments, the third temperature ranges from about 5°C to about 25°C.
EXAMPLES
[00067] The present invention is further explained in the form of following examples. However, it is to be understood that the following examples are merely illustrative and are not to be taken as limitations upon the scope of the invention.
Example 1
95 g OM05P and 5 g SEBS were mixed. The mixture was filled in a pouch. The pouch was kept flat in an air oven at temperature of 70°C for 4 hours. A metallic sheet of approximately 2 kg was placed on the pouch to keep it flat during heat treatment. After the heat treatment, the pouch was cooled to room temperature. Upon cooling, the pouch was viscous and not form stable in its pouch shape. On cutting the pouch, liquid could be observed leaking.
Example 2
90 g OM05P and 10 g SEBS were mixed. The mixture was filled in a pouch. The pouch was kept flat in an air oven at temperature of 70°C for 4 hours. After the heat treatment, the pouch was cooled to room temperature. Upon cooling, the pouch was form stable in its pouch shape, but surface was not smooth and uneven in thickness.
Example 3
90 g OM05P and 10 g SEBS were mixed. The mixture was filled in a pouch. The pouch was kept flat in an air oven at temperature of 70°C for 4 hours. A metallic sheet of approximately 2 kg was placed on the pouch to keep it flat during heat treatment. After the heat treatment, the pouch was cooled to room temperature. Upon cooling, the pouch was form stable in its pouch shape. On cutting the pouch, no liquid was observed leaking and no change in the form was observed.
Example 4
0.9 kg OM05P and 0.1 kg SEBS were premixed at 70°C and passed through a screw extruder at a temperature of 150°C to a mold. Subsequently, the mold was cooled to room temperature through means of air/water/natural cooling. The obtained shape was form stable and no liquid was observed leaking out of 3D matrix.
Example 5
0.9 kg OM05P and 0.1 kg SEBS were premixed at 70°C and passed through a screw extruder at a temperature of 110°C to a mold. Subsequently, the mold was cooled to room temperature through means of air/water/natural cooling. The resulting mixture was viscous in nature and could not be filled uniformly throughout the mold.
Example 6
0.85 kg OM05P and 0.15 kg SEBS were premixed at 70°C and passed through a screw extruder at a temperature of 150 to a mold. Subsequently, the mold was cooled to room temperature through means of air/water/natural cooling. The resulting mixture was viscous in nature and could not be filled uniformly throughout the mold.

Example 7
0.9 kg OM05P and 0.1 kg SEBS were premixed at room temperature and passed through an injection molding barrel at a temperature of 100 to 200°C to mold. Subsequently, the mold was cooled to room temperature through means of air/water/natural cooling. The obtained shape was not properly mixed. Different parts of the shape had different composition.
Example 8
0.9 kg OM05P and 0.1 kg SEBS were premixed at 70°C and passed through an injection molding barrel at a temperature of 100 to 200°C to mold. Subsequently, the mold was cooled to room temperature through means of air/water/natural cooling. The obtained shape was form stable and no liquid was observed leaking out of 3D matrix.
Example 9
90 g OM05P and 10 g SEBS were mixed at 70°C for 30 minutes. The mixture was cooled to room temperature and filled into a pouch. On cutting the pouch, no liquid was observed leaking.
Example 10
90 g OM05P and 10 g SEBS were mixed at 50°C for 30 minutes. The mixture was cooled to room temperature. The resulting mixture was not properly mixed. And it could not be encapsulated in polymeric film.
Conclusion: As observed from the above examples only examples 3, 4, 8 and 9 of the present invention resulted in preparing form stabilized temperature regulating polymeric retrofits.
[00065] A skilled artisan will appreciate that the quantity and type of each ingredient can be used in different combinations or singly. All such variations and combinations would be falling within the scope of present disclosure.
[00066] The foregoing examples are merely illustrative and are not to be taken as limitations upon the scope of the invention. Various changes and modifications to the disclosed embodiments will be apparent to those skilled in the art. Such changes and modifications may be made without departing from the scope of the invention.
ADVANTAGES OF THE INVENTION
[00067] The present disclosure provide a process for preparing form stabilized temperature regulating polymeric retrofits that may overcome one or more limitations associated with the conventional processes.
[00068] The proposed invention provide a process to prepare form stabilized temperature regulating polymer retrofits that is economical, easy to carry out and is not time consuming.
[00069] The present disclosure provide a process for preparing form stabilized temperature regulating polymeric retrofits that is safe and environmentally friendly.
[00070] The present disclosure provide a process that carries out the preparation of PCM at low temperature, preventing degradation of the reactants and the final product, form stabilized temperature regulating polymer retrofits.
[00071] The present disclosure provide a process wherein the contents of the PCM are packed and processed in the same container in which it is packed, therefore does not involve product handling complications
[00072] The present disclosure provide a process which is safe for manufacturing because the process does not involve any health hazards as there are negligible risk of overshooting of temperature, or fire hazards due to fuming organic materials closer to the flash point.
[00073] Although the present invention has been described with reference to preferred embodiments, it is submitted that various modifications can be made to the exemplary embodiments without departing from the spirit and scope of the invention.
,CLAIMS:1. A process for preparing a form stabilized temperature regulating polymer retrofit, the process comprising the steps of:
(a) preparing a slurry by mixing one or more polymers and one or more organic materials at a first temperature;
(b) encapsulating the slurry;
(c) optionally, compressing the encapsulated slurry;
(d) exposing the encapsulated slurry to a second temperature ranging from about 60°C to 200°C for a time period ranging from about 30 minutes to about 10 hours; and
(e) allowing the heated slurry to cool down to a third temperature ranging from about 2°C to about 35°C to obtain the form stabilized temperature regulating polymer retrofit.
2. The process as claimed in claim 1, wherein the slurry was prepared at the first temperature ranging from about 35°C to about 85°C, preferably, at a temperature ranging from about 60°C to about 70°C.
3. The process as claimed in claim 1, wherein the polymers and organic materials are mixed in a ratio of 9:1.
4. The process as claimed in claim 1, wherein the organic PCM and polymer are processed to form a form stable PCM by an in situ reaction mechanism and contents of the PCM are packed and processed in the same container in which it is packed.
5. The process as claimed in claim 1, wherein the one or more polymers is selected from any or a combination of polystyrene, High-density polyethylene (HDPE), Low-density polyethylene (LDPE), Ethylene vinyl alcohol (EVOH), Styrene-butadiene block copolymer (SBS) or a hydrogenated styrene-butadiene block copolymer (SEBS) and polymethyl methacrylate (PMMA).
6. The process as claimed in claim 1, wherein the one or more organic materials is selected from any or a combination of paraffin, fatty acid, fatty alcohol and fatty ester.
7. The process as claimed in claim 1, wherein the step of encapsulation comprises filling the slurry in a mold.
8. The process as claimed in claim 1, wherein the slurry has a viscosity ranging from about 50 to 1000 cps.
9. The process as claimed in claim 1, wherein the step of encapsulation comprises filling the slurry in a container and sealing the container;
wherein, the container is a rigid container or a flexible container.
10. The process as claimed in claim 1, wherein the encapsulated slurry is compressed at a weight ranging from about 0.5 to 5 kg/cm2, preferably from about 2 to 5 kg/cm2 and more preferably from about 3 to 5 kg/cm2.