DESC:FIELD OF THE INVENTION
[0001] The present invention relates to a biocidal coating composition. Specifically, the present invention relates to a biocidal coating composition for technical textile comprising a water based highly elastic membrane forming polymer and water-soluble biocides; and a method for producing the same.

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] Breakdown of materials can often be a complex event resulting from a mixture of chemical, physical, and microbiological reasons. Obnoxious smell, staining and degradation of textiles are some of the detrimental effects of harmful microbes. Though the antimicrobials have been used for the decades, it is only in the recent times, enormous efforts have been made on finishing textiles with antimicrobial compounds. With the increasing awareness about hygienic life style, the consumers are now increasingly exploring the options of a wide range of textile products finished with antimicrobial properties.
[0004] Biocidal treatment for textile materials avoid cross infection by pathogenic micro-organisms; control the infestation by microbes; arrest metabolism in microbes in order to reduce the odor formation; and safeguards the textile products from staining, discoloration and quality deterioration.
[0005] With advent of newer technologies, the increasing needs of the consumer related to the biocidal coating of technical textiles can be fulfilled without compromising the issues related to safety, human health and environment.
[0006] Technical textiles find uses in mobility, outdoor and lifestyle, interior design, industrial and protective, and exterior applications. These are the most rigorous conditions such as fishing nets, tarpaulin on trucks, industrial applications in isolation and filtering, advertising on billboards and banners to high-performance outdoor gear. These textiles are easily spoilt by the environment and the conditions of their use.
[0007] The requirements associated with biocidal performance to avoid deterioration and the development of biofouling growth like harmful bacteria, algae, mussels, barnacles, and the like. Various technical textile products have been developed to meet the above requirements. However, the issues with existing products like durability of biocidal performance, life of the product, easy wash out form surface, lower cut resistance, impact on elongation and limited way of mode of deposition on product, limit their potential use. Moreover, the existing products suffer from poor biocide performance and durability.
[0008] Contemplated herein, biocidal coatings that can be used in the production of technical textiles, which can be spread on the surface of a substrate.
[0009] The present invention satisfies the existing needs, as well as others, and generally overcomes the deficiencies found in the prior art.

OBJECTS OF THE INVENTION
[0010] An object of the present invention is to provide a biocidal coating composition for application to a surface of technical textile.
[0011] An object of the present invention is to provide a biocidal coating composition comprising microbicidal, fungicides, herbicides, insecticides, algaecides, and molluscicides properties for application to a surface of technical textile.
[0012] An object of the present invention is to provide a biocidal coating composition for technical textile comprising elastic membrane forming polymer with a recovery of at least 50% on stretching.
[0013] An object of the present invention is to provide biocidal coating composition for technical textile comprising water soluble biocide.
[0014] An object of the present invention is to provide a biocidal coating composition for technical textile comprising water soluble biocide.
[0015] An object of the present invention is to provide a biocidal coating composition for technical textile comprising wetting agent, pH stabilizer, and hydrophilic polymer.
[0016] An object of the present invention is to provide a biocidal coating composition for technical textile comprising biocide powder or biocide liquid in a water-based highly elastic membrane forming polymer composition.
[0017] An object of the present invention is to provide a biocidal coating composition for technical textile comprising elastic membrane forming polymer with a recovery of at least 50% on stretching, biocide, wetting agent, pH stabilizer, and hydrophilic polymer.
[0018] An object of the present invention is to provide a biocidal coating composition for technical textile comprising elastic membrane forming polymer with a recovery of at least 50% on stretching, biocide, wetting agent or dispersant or stabilizing agent, alkaline pH stabilizing agent, and hydrophilic polymer.
[0019] Another object of the invention is to provide a method for coating the biocidal composition over technical textile
[0020] Yet another object of the invention is to provide a technical textile coated with biocidal composition comprising liquid EPDM (ethylene propylene diene rubber)elastic membrane forming polymer, biocide, wetting agent, pH stabilizer, and hydrophilic polymer.

SUMMARY OF THE INVENTION
[0021] This summary is provided to introduce a selection of concepts in a simplified form that is further described below in the 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.
[0022] The present invention relates to a biocidal coating composition. Specifically, the present invention relates to a biocidal coating composition for technical textile comprising a highly elastic membrane forming polymer and water-soluble biocides; and a method for producing the same
[0023] In an aspect, the present invention relates to a biocidal coating composition for application to a surface of technical textile.
[0024] In an aspect, the present invention relates to a biocidal coating composition comprising microbicidal, fungicidal, herbicidal, insecticidal, algaecidal, and molluscicidal properties for application to a surface of technical textile.
[0025] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising elastic membrane forming polymer with a recovery of at least 50% on stretching.
[0026] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising water soluble biocide.
[0027] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising water soluble biocide.
[0028] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising wetting agent, pH stabilizer, and hydrophilic polymer.
[0029] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising biocide powder or biocide liquid in a water-based highly elastic membrane forming polymer composition.
[0030] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising elastic membrane forming polymer with a recovery of at least 50% on stretching, biocide, wetting agent, pH stabilizer, and hydrophilic polymer.
[0031] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising elastic membrane forming polymer with a recovery of at least 50% on stretching, biocide, wetting agent or dispersant or stabilizing agent, alkaline pH stabilizing agent, and hydrophilic polymer.
[0032] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising:
a. water-based elastic membrane forming polymer fraction having a minimum 300% elongation at break, ranging from about 10 wt. % to about 50 wt. % with respect to total composition;
b. biocide fraction ranging from about 1 wt. % to about 50 wt. % with respect to total composition;
c. wetting agent ranging from about 0.01 wt. % to about 2 wt. % with respect to biocide fraction;
d. alkaline pH stabilizing agent ranging from about 0.1 wt. % to about 2 wt. % with respect to water-based elastic membrane forming polymer fraction; and
e. hydrophilic polymer ranging from about 0.1 wt. % to about 5 wt. % with respect to water-based elastic membrane forming polymer fraction.
[0033] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising liquid EPDM (ethylene propylene diene rubber)elastic membrane forming polymer, biocide, wetting agent or dispersant or stabilizing agent or surfactant, alkaline pH stabilizing agent, and hydrophilic polymer.
[0034] In an aspect, the present invention relates to a biocidal coating composition for technical textile comprising:
a. liquid EPDM elastic membrane forming polymer fraction, ranging from about 10 wt. % to about 50 wt. % with respect to total composition;
b. biocide fraction ranging from about 1 wt. % to about 50 wt. % with respect to total composition;
c. wetting agent ranging from about 0.01 wt. % to about 2 wt. % with respect to biocide fraction;
d. alkaline pH stabilizing agent ranging from about 0.1 wt. % to about 2 wt. % with respect to liquid EPDM elastic membrane forming polymer fraction; and
e. hydrophilic polymer ranging from about 0.1 wt. % to about 5 wt. % with respect to liquid EPDM elastic membrane forming polymer fraction.
[0035] In another aspect, the present invention relates to a method for coating the biocidal composition over technical textile comprising the steps of:
a. mixing the biocide powder or biocide liquid in a water-based highly elastic membrane forming polymer composition;
b. mixing hydrophilic polymer with the said composition from step a); and
c. surface of the substrate is coated with the said composition from step b), followed by curing the said surface;
[0036] In yet another aspect, the present invention relates to a technical textile coated with biocidal composition comprising liquid EPDM (ethylene propylene diene rubber)elastic membrane forming polymer, biocide, wetting agent, pH stabilizer, and hydrophilic polymer.
[0037] 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
[0038] 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.
[0039] 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.
[0040] 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.
[0041] In some embodiments, numbers have been used for quantifying weight percentages, ratios, and so forth, to describe and claim 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 and attached claims 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.
[0042] Various terms as used herein are shown below. 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.
[0043] 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.
[0044] 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.”
[0045] 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.
[0046] 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.
[0047] 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. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified.
[0048] 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.
[0049] 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.
[0050] The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments.
[0051] 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.
[0052] While a particular form of the invention has been illustrated and described, it will be apparent that various modifications can be made without departing from the spirit and scope of the invention.
[0053] The present invention provides a biocidal coating composition for application to a surface of technical textile.
[0054] In an embodiment of the present invention, the biocidal coating composition is capable of destroying or killing an organism, or of materially inhibiting the growth of an organism.
[0055] In an embodiment of the present invention, the organism include micro-cellular, uni-cellular, multi-cellular organisms, and the like. Examples include fungi and their spores, protozoans and their cysts, bacteria and their spores, algae, viruses, helminthes or their ova, insects, small fish and their ova, mollusks and their ova, and other types of living organisms.
[0056] In an embodiment of the present invention, the biocidal coating composition comprises organic or inorganic microbicidal, fungicidal, herbicidal, insecticidal, algaecidal, and molluscicidal agents.
[0057] In an embodiment of the present invention, the biocidal coating composition comprises microbicidal, fungicidal, herbicidal, insecticidal, algaecidal, and molluscicidal activities.
[0058] In an embodiment of the present invention, the textile includes fibers selected from but not limited from a group consisting of natural fibers, synthetic cellulosic fibers, regenerated protein fibers, acrylic fibers, polyolefin fibers, polyurethane fibers, vinyl fibers, and blends thereof.
[0059] In an embodiment of the present invention, the biocidal particles used in the composition can be metal-containing materials including but not limited to transition metals, earth metals, metalloids, post-transition metals, and combinations thereof. Specific metal embodiments include tin, titanium, aluminum, zinc, iron, nickel, manganese, magnesium, calcium, strontium, barium, copper, silver, tungsten, and combinations thereof.
[0060] In an embodiment of the present invention, the biocidal particles can be selected from natural, semi-synthetic, synthetic, organic, inorganic, metallic or ceramic biocides or combinations thereof.
[0061] In an embodiment of the present invention, the biocidal particles can be made of oxides of metals, metal complexes of hydroxides, metal complexes of hydrates, and metal complexes polyoxometallates (POMs), and the like.
[0062] In an embodiment of the present invention, the biocidal particles may include oxidizing biocides like chlorine, chlorine dioxide, hydrogen peroxide, bromine; non-oxidising biocides like aldehyde-based non-oxidative biocide, an amine-containing non-oxidative biocide, an amide-containing non-oxidative biocide, an imide-containing non-oxidative biocide, a halogenated non-oxidative biocide, a sulfur-containing non-oxidative biocide, a quaternary phosphonium-containing non-oxidative biocide, an ammonium salt-containing non-oxidative biocide, bronopol, terbutylazine, 1,2-dibromo-2, 4-dicyanobutane, 2-bromo-2-cyano-acetamide, 2,2-dibromo-2-cyanoacetamide, 2-bromo-2-chloro-2-cyanoacetamide and 2,2-dibromo-3-nitrilopropionamide, THPS, DBNPA, Gluteraldehyde, and the like.
[0063] In an embodiment of the present invention, the biocidal particles may include metal bromides including but not limited to sodium bromide, magnesium bromide, calcium bromide, lithium bromide, ammonium bromide, potassium bromide, or combinations thereof.
[0064] In an embodiment of the present invention, the biocidal oxides of metal may selected from but not limited to oxides of Mg, Ti, Ca, Al, Sn, Fe, Co, V, Mn, Ni, Cr, Cu, Zn, Zr, or mixtures thereof; Preferably the metal oxide nanoparticles may comprise MgO, TiO2, CaO, Al2O3, SnO2, Fe2O3, FeO, CoO, V2O5, MnO3, NiO, CriO3, CuO, ZnO, ZrO2 and mixtures thereof.
[0065] In an embodiment of the present invention, the biocides include but not limited to fungicides, herbicides, insecticides, algaecides, molluscicides, germicides, antibiotics, antibacterials, antivirals, antifungals, antiprotozoals, and antiparasites and the like.
[0066] In preferred embodiment of the present invention, the biocidal coating composition comprises water soluble biocide selected from copper, cuprous oxide, copper pyrithion, and the combinations thereof.
[0067] In an embodiment of the present invention, the biocidal particles can be nanoparticles or microparticles or combinations thereof.
[0068] In an embodiment of the present invention, the particles have sizes ranging in nanometer scale. However, many modified nanoparticles have wider ranges of sizes. In some embodiments, the nanoparticles may have a diameter of at least about 1 nm, 10 nm, 50 nm, 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1000 nm, 1100 nm, 1200 nm, 1300 nm, 1400 nm, 1500 nm, 1600 nm, 1700 nm, 1800 nm, 1900 nm, 2000 nm, 2500 nm, 3000 nm, 4000 nm, 5000 nm, 6000 nm, 7000 nm, 8000 nm, or at least 9000 nm. In some embodiments, the nanoparticles may have a diameter of less than 10,000 nm, 9000 nm, 8000 nm, 7000 nm, 6000 nm, 5000 nm, 4500 nm, 4000 nm, 3500 nm, 3000 nm, 2500 nm, 2000 nm, 1900 nm, 1800 nm, 1700 nm, 1600 nm, 1500 nm, 1400 nm, 1300 nm, 1200 nm, 1100 nm, 1000 nm, 900 nm, 800 nm, 700 nm, 600 nm, 500 nm, 250 nm, or less than 100 nm. Most preferably, the size ranging from about 100 nm to about 500 nm.
[0069] In an embodiment of the present invention, the biocidal coating composition comprises water-based elastic membrane forming polymer having a minimum 300% elongation on stretching.
[0070] In an embodiment of the present invention, the water-based elastic membrane forming polymer is selected from but not limited to EPDM (ethylene propylene diene rubber) based polymer, EPE based polymer, urethane based polymer, bitumen based polymer, TPE based polymer, or combinations thereof.
[0071] In an embodiment of the present invention, the biocidal coating composition comprises alkaline pH of at least 8, more preferably at least 9, even more preferably at least 10, again more preferably at least 11, or even at least 12, most preferably at least 14.
[0072] In an embodiment of the present invention, the biocidal coating composition further comprises wetting agent or dispersant or stabilizing agent or surfactant to stabilize the biocide particles scattered/dispersed in water-based continuous liquid Phase and to avoid sedimentation, wherein each particle has been stabilized with stabilizing agent to avoid the sedimentation.
[0073] In an embodiment of the present invention, the wetting agent or dispersant or stabilizing agent or surfactant to stabilize the biocide particles is selected from but not limited to Anionic surfactants: sulfate, sulfonate, and phosphate, carboxylate derivatives, and the like; Cationic surfactant: quaternary ammonium salts: cetrimonium bromide (CTAB), cetylpyridinium chloride (CPC), benzalkonium chloride (BAC), benzethonium chloride (BZT), dimethyldioctadecylammonium chloride, and dioctadecyldimethylammonium bromide (DODAB), and the like; Amphoteric surfactants: Lauryldimethylamine oxide, myristamine oxide, and the like; Non-ionic surfactants: Fatty acid esters of sorbitol, for example Spans and tween, and the like.
[0074] In an embodiment of the present invention, the biocidal coating composition further comprises alkaline pH stabilizing agent selected from but not limited to sodium hydroxide; ammonium hydroxide; and various basic metal and/or alkali metal hydroxides, including but not limited to lithium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, and the like
[0075] In an embodiment of the present invention, the biocidal coating composition further comprises hydrophilic polymer having a tendency to mix with, dissolve in, or be wetted by water and helps to make surface hydrophilic. The hydrophilic polymer is selected from but not limited to polyethylene glycol, polyethylene oxide, polyoxyethylene, polyvinylpyrrolidone (PVP), or combinations thereof.
[0076] In an embodiment of the present invention, the fraction of the elastic membrane forming polymer comprise at least about 0.05 wt. %, at least about 0.5 wt. %, at least about 1 wt. %, at least about 2 wt. %, at least about 3 wt. %, at least about 4 wt. %, at least about 5 wt. %, at least about 10 wt. %, at least about 20 wt. %, at least about 30 wt. %, at least about 40 wt. %, at least about 50 wt. %, at least about 60 wt. %, at least about 70 wt. %, at least about 80 wt. %, at least about 90 wt. %, at least about 99 wt. % with respect to total composition. Most preferably, the fraction ranging from about 10 wt. % to about 50 wt. % with respect to total composition.
[0077] In an embodiment of the present invention, the fraction of biocidal particle dispersed into the elastic membrane forming polymer comprise at least about 0.05 wt. %, at least about 0.5 wt. %, at least about 1 wt. %, at least about 2 wt. %, at least about 3 wt. %, at least about 4 wt. %, at least about 5 wt. %, at least about 10 wt. %, at least about 20 wt. %, at least about 30 wt. %, at least about 40 wt. %, at least about 50 wt. %, at least about 60 wt. %, at least about 70 wt. %, at least about 80 wt. %, at least about 90 wt. %, at least about 99 wt. % with respect to the elastic membrane forming polymer fraction. Most preferably, the fraction ranging from about 10 wt. % to about 50 wt. % with respect to the elastic membrane forming polymer fraction.
[0078] In an embodiment of the present invention, the fraction of the hydrophilic polymer comprise at least about 0.01 wt. %, at least about 0.1 wt. %, at least about 1 wt. %, at least about 2 wt. %, at least about 3 wt. %, at least about 4 wt. %, at least about 5 wt. %, at least about 10 wt. %, at least about 20 wt. %, at least about 30 wt. %, at least about 40 wt. %, at least about 50 wt. %, at least about 60 wt. %, at least about 70 wt. %, at least about 80 wt. %, at least about 90 wt. %, at least about 99 wt. % with respect to the elastic membrane forming polymer fraction. Most preferably, the fraction ranging from about 0.01 wt. % to about 5 wt. % with respect to the elastic membrane forming polymer fraction.
[0079] In an embodiment of the present invention, the fraction of the alkaline pH stabilizing agent comprise at least about 0.01 wt. %, at least about 0.1 wt. %, at least about 1 wt. %, at least about 2 wt. %, at least about 3 wt. %, at least about 4 wt. %, at least about 5 wt. %, at least about 10 wt. %, at least about 20 wt. %, at least about 30 wt. %, at least about 40 wt. %, at least about 50 wt. %, at least about 60 wt. %, at least about 70 wt. %, at least about 80 wt. %, at least about 90 wt. %, at least about 99 wt. % with respect to the elastic membrane forming polymer fraction. Most preferably, the fraction ranging from about 0.1 wt. % to about 2 wt. % with respect to the elastic membrane forming polymer fraction.
[0080] In an embodiment of the present invention, the fraction of the dispersant comprise at least about 0.01 wt. %, at least about 0.1 wt. %, at least about 1 wt. %, at least about 2 wt. %, at least about 3 wt. %, at least about 4 wt. %, at least about 5 wt. %, at least about 10 wt. %, at least about 20 wt. %, at least about 30 wt. %, at least about 40 wt. %, at least about 50 wt. %, at least about 60 wt. %, at least about 70 wt. %, at least about 80 wt. %, at least about 90 wt. %, at least about 99 wt. % with respect to biocide fraction. Most preferably, the fraction ranging from about 0.01 wt. % to about 2 wt. % with respect to biocide fraction.
[0081] In preferred embodiment of the present invention, the biocidal coating composition for technical textile comprises elastic membrane forming polymer with a recovery of at least 50% on stretching, biocide, wetting agent or dispersant or stabilizing agent, alkaline pH stabilizing agent, and hydrophilic polymer.
[0082] In preferred embodiment of the present invention, the biocidal coating composition for technical textile comprises:
a. water-based elastic membrane forming polymer fraction having a minimum 300% elongation at break, ranging from about 10 wt. % to about 50 wt. % with respect to total composition;
b. biocide fraction ranging from about 1 wt. % to about 50 wt. % with respect to total composition;
c. wetting agent ranging from about 0.01 wt. % to about 2 wt. % with respect to biocide fraction;
d. alkaline pH stabilizing agent ranging from about 0.1 wt. % to about 2 wt. % with respect to water-based elastic membrane forming polymer fraction; and
e. hydrophilic polymer ranging from about 0.1 wt. % to about 5 wt. % with respect to water-based elastic membrane forming polymer fraction.
[0083] In a specific embodiment of the present invention, the biocidal coating composition for technical textile comprises liquid EPDM (ethylene propylene diene rubber) elastic membrane forming polymer, biocide, wetting agent or dispersant or stabilizing agent or surfactant, alkaline pH stabilizing agent, and hydrophilic polymer.
[0084] In a specific embodiment of the present invention, the biocidal coating composition for technical textile comprises:
a. liquid EPDM elastic membrane forming polymer fraction, ranging from about 10 wt. % to about 50 wt. % with respect to total composition;
b. biocide fraction ranging from about 1 wt. % to about 50 wt. % with respect to total composition;
c. wetting agent ranging from about 0.01 wt. % to about 2 wt. % with respect to biocide fraction;
d. alkaline pH stabilizing agent ranging from about 0.1 wt. % to about 2 wt. % with respect to liquid EPDM elastic membrane forming polymer fraction; and
e. hydrophilic polymer ranging from about 0.1 wt. % to about 5 wt. % with respect to liquid EPDM elastic membrane forming polymer fraction.
[0085] In an embodiment of the present invention, the biocidal coating composition can further comprise tea tree oil, rosin, abietic acid, terpenes, rosemary oil, zinc oxide, copper, mercury, silver salts, markers, biomarkers, dyes, pigments, radio-labeled materials, glues, adhesives, lubricants, medicaments, sustained release drugs, nutrients, peptides, amino acids, polysaccharides, enzymes, hormones, chelators, multivalent ions, emulsifying or de-emulsifying agents, binders, fillers, thickeners, factors, co-factors, enzymatic-inhibitors, organoleptic agents, liposomes, vesicles, magnetic materials, paramagnetic materials, biocompatibility-enhancing materials, biodegradation-enhancing materials, anticorrosive pigments, anti-fouling pigments, UV absorbers, blood coagulators, inhibitors of blood coagulation, or any combination thereof.
[0086] In an embodiment of the present invention, the biocidal coating composition can further comprise suspending agent selected from but not limited to xanthan gum, sodium carboxymethylcellulose, polyacrylic acid, tragacanth, polymethyl vinyl ether/maleric anhydride copolymer, polyethylene oxide, methylcellulose, karya gum, methylethylcellulose, soluble starch, geletan, pectin, polyvinyl alcohol, PEG (polyethylene glycol), polyhydroxymethacrylate, hydroxypropyl cellulose, carbomers, chitin, gum acacia, and the like.
[0087] In an embodiment, the present invention relates to a method for coating the biocidal coating composition over technical textile comprising the steps of:
a. mixing the biocide powder or biocide liquid in a water-based highly elastic membrane forming polymer composition;
b. mixing hydrophilic polymer with the said composition from step a); and
c. surface of the substrate is coated with the said composition from step b), followed by curing the said surface.
[0088] In an embodiment of the present invention, the biocidal coating composition provide forming a biofouling repellent surface, non-adhering surface, self-cleaning, self-healing coating surface and low friction surface and the coatings are stable for several years.
[0089] In an embodiment, the biocidal coating composition of the present invention maybe used in any manner known to a person skilled in the art.
[0090] In an embodiment of the present invention wherein the substrate is a synthetic polymer such as High Density Polyethylene (HDPE), Ultra High Molecular Weight Polyethylene (UHMPE), Nylon 6, Nylon 66, Polyester, or netting made from any other synthetically extruded fibre.
[0091] In an embodiment of the present invention where in the Substrate can be an individual fibre, twine made with synthetic fibres, netting made from synthetic fibres or fabric made from synthetic fibres.

ADVANTAGES OF THE PRESENT INVENTION
[0092] The present disclosure provides a biocidal coating composition as protective coating layer which amalgamated with different type of biocides protect from biocidal growth as the first line of defense against deterioration of the technical textile.
[0093] The present disclosure provides a biocidal coating composition comprising a biocidal coated film surface modifier polymer, which can convert the hydrophobic to hydrophilic surface.
[0094] The present disclosure provides a biocidal coating composition comprising surface modifier polymer, which can reduce slippery layer on the surface.
[0095] The present disclosure provides a biocidal coating composition that can form a biofouling repellent surface, non-adhering surface, self-cleaning coating surface.
[0096] The present disclosure provides a biocidal coating composition that can easily be applied on the technical textiles.
[0097] The present disclosure where in the biocidal treatment on the substrate provides a long term biocidal effect that does not peel, wash off, or crack in a wide range of weather conditions.

,CLAIMS:1. A biocidal coating composition for technical textile surface, said biocidal coating composition comprises water-based elastic membrane forming polymer fraction with a recovery of at least 50% on stretching, biocide fraction, wetting agent or dispersant or stabilizing agent, alkaline pH stabilizing agent, and hydrophilic polymer having a tendency to mix with, dissolve in, or be wetted by water and helps to make the surface hydrophilic.
2. The biocidal coating composition as claimed in claim 1 comprises:
a. water-based elastic membrane forming polymer fraction in an amount of 10 wt. % to 50 wt. % with respect to total composition;
b. biocide fraction in an amount of 1 wt. % to 50 wt. % with respect to total composition;
c. wetting agent in an amount of 0.01 wt. % to 2 wt. % with respect to biocide fraction;
d. alkaline pH stabilizing agent in an amount of 0.1 wt. % to 2 wt. % with respect to liquid EPDM elastic membrane forming polymer fraction; and
e. hydrophilic polymer in an amount of 0.1 wt. % to 5 wt. % with respect to liquid EPDM elastic membrane forming polymer fraction.
3. The biocidal coating composition as claimed in claim 1, wherein the water-based elastic membrane forming polymer is liquid EPDM (ethylene propylene diene rubber) elastic membrane forming polymer.
4. The biocidal coating composition as claimed in claim 1, wherein the biocide is selected from the group consisting of oxidizing biocides; biocidal particles made of oxides of metals, metal complexes of hydroxides, metal complexes of hydrates, and metal complexes polyoxometallates (POMs); natural, semi-synthetic, synthetic, organic, inorganic, metallic or ceramic biocides; non-oxidising biocides; biocidal particles made of metal bromides; fungicides, herbicides, insecticides, algaecides, molluscicides, germicides, antibiotics, antibacterials, antivirals, antifungals, antiprotozoals, and antiparasites; water soluble biocide; and combinations thereof.
5. The biocidal coating composition as claimed in claim 1, wherein the alkaline pH stabilizing agent is selected from the group consisting of sodium hydroxide; ammonium hydroxide; and various basic metal and/or alkali metal hydroxides, including but not limited to lithium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, and combinations thereof.
6. The biocidal coating composition as claimed in claim 1, wherein the hydrophilic polymer is selected from the group consisting of polyethylene glycol, polyethylene oxide, polyoxyethylene, polyvinylpyrrolidone (PVP), or combinations thereof, and combinations thereof.
7. The biocidal coating composition as claimed in claim 1, wherein the wetting agent is selected from the group consisting of Anionic surfactants, Cationic surfactants, Amphoteric surfactants, Non-ionic surfactants, and combinations thereof.
8. The biocidal coating composition as claimed in claim 1, wherein the technical textile is made of High Density Polyethylene (HDPE), Ultra High Molecular Weight Polyethylene (UHMPE), Nylon 6, Nylon 66, Polyester, or netting made from any other synthetically extruded fibre.
9. The biocidal coating composition as claimed in claim 1, wherein the technical textile is selected from the group consisting of an individual fibre, twine made with synthetic fibres, netting made from synthetic fibres or fabric made from synthetic fibres.
10. A method for coating the biocidal coating composition as claimed in claim 1 over technical textile, said method comprises the steps of:
a. mixing the biocide powder or biocide liquid in a water-based highly elastic membrane forming polymer composition;
b. mixing hydrophilic polymer with the said composition from step a); and
c. surface of the substrate is coated with the said composition from step b), followed by curing the said surface.