MXPA99010301A - Alcl resistant polymer reinforcement system - Google Patents

Abstract

The present invention relates to a curable epoxy coating system suitable for use in applications where it will be exposed to ultraviolet radiation and moisture, such as in naval and marine flight decks. The epoxy coating system of the present invention contains an epoxy component containing an essentially non-aromatic epoxy polymer, and a hardener component containing mainly secondary and / or tertiary amines. The aromaticity of the epoxy polymer and the primary amine content in the hardener are limited to provide a coating which, after curing, does not undergo "aeration" or flushing, is chemically and mechanically stable, has sufficient thickness to immobilize anti-slip aggregates , and is rugged enough to withstand long-term flight deck operations for naval and marin aircraft

Description

POLYMERIC RESISTANT CLIMATE COATING SYSTEM BACKGROUND OF THE INVENTION FIELD OF THE INVENTION The present invention relates to polymeric coating systems resistant to climatic conditions / suitable for use in naval applications and other marine applications, as well as any other type of applications requiring wear-resistant surfaces, climatic conditions and degradation by radiation, particularly ultraviolet radiation. The present invention also relates to coating compositions formed by the curing of these polymeric coating systems resistant to climatic conditions. These coatings are particularly useful for providing durable and anti-slip surfaces. DESCRIPTION OF THE PREVIOUS TECHNIQUE Resin coatings resistant to climatic conditions have been sought for many years, mainly to protect the underlying surfaces from corrosion and other damage, and also to provide an aesthetic or utilitarian color to the coated object. For many years light-stable and highly weather-resistant resin coating systems were used, using acrylics, silicates, urethanes and fluoropolymers, in the tank coating industry (eg, water tank lining, tank wagons , tanks for petroleum refineries and natural gas refineries, etc.), in the transit industry (for example, railway cars, airplanes, etc.) and in the architecture and construction industry (for example, buildings, ceilings, signs, etc.). However, these systems tend to form thin films, approximately 0.05 to 0.2 millimeters. In certain applications, another function of the coating is to provide an anti-slip surface under wet conditions. For example, it is generally desirable that the coatings that are used on the surfaces of boat decks and other marine applications provide an anti-slip surface and suitable for wear. In particular, the flight decks of naval air carriers must have surfaces extremely resistant to the great wear and tear imposed by the repeated take-offs and landings of helicopters and high performance fighters, as well as the impact and wear imposed by the contact between the hooks. of aircraft tail and catapult cables. Other vessels, in addition to airplanes transporters, as well as commercial vessels and oil platforms, also have flight decks for helicopters or short takeoff aircraft, for which an anti-slip coating resistant to weather conditions would be useful. In each of these cases, flight operations at sea, under changing climatic conditions, require a durable and anti-slip coating to prevent disasters. The conventional weather resistant coating systems described above do not provide a coating thick enough to hold the large aggregates that are typically needed to provide an anti-slip surface suitable for naval operations and commercial marine aircraft. Nor do they provide their fierce resistance to wear and tear under the severe conditions of the operations of airplanes at sea. Acrylic, silicate or urethane coatings are simply not able to withstand 12 to 18 months of operations on naval flight decks. Finally, these compositions and their precursors have an organic volatile content (CVO) that is unacceptably high. One of the desirable characteristics of anti-slip coatings for commercial and military maritime flight decks is that they are capable of being applied., if necessary, by personnel at sea, in case the coating is damaged and requires repairs or replacement. For environmental and health reasons, low or zero CVO compositions are necessary. Epoxy resins have three-membered epoxy or oxiric rings attached to aliphatic, cycloaliphatic or aromatic structures. Epoxy rings provide the ability to react with a variety of substrates, giving these resins great versatility. When reacting with curing agents, the epoxies form thermosetting resins with a narrow network of degraded polymers. They are resistant and have good adhesion to a variety of substrates, high chemical and corrosion resistance, and good dielectric properties. Epoxy resins also have little shrinkage in curing, and can be processed and cured under a variety of conditions. They are used commercially in a wide variety of applications, such as in coatings, laminates and composite materials, tools, moldings and castings, in construction and as bonding agents or adhesives. Epoxy resins can be epoxies in one or two parts. Two-part epoxies harden when mixed with a hardening agent. The two-part epoxy resin systems do not show the level of CVO associated with the other resins discussed above. They are extremely durable and wear resistant, and are capable of withstanding the severe use associated with an aircraft flight deck. These two-part epoxy resins can be aromatic (ie, made from epichlorohydrin and bisphenol A), aliphatic (ie, where an aliphatic polyol, such as glycerol, replaces bisphenol A) or clickaliphatic (ie, where the aromatic rings of bisphenol A are very, or totally, hydrogenated, or when the two carbons forming the epoxide group also form another cycloaliphatic ring). Uses widely used liquid epoxy resin is produced by curing the product of the liquid reaction of surplus epichlorohydrin and bisphenol A, often described as diglycidyl ether of bisphenol A, or DEGBPA. DEGBPA is a supercooled liquid, and can be prepared by opening with caustic catalysts the nucleophilic ring of the epoxide group in the epichlorohydrin by the phenolic hydroxyl, followed by the dehydrohalogenation to convert it to an epoxide. The surplus of epichlorohydrin is used in the production of DEGBPA to minimize the high molecular weight species. There are also solid epoxy resins, and may have structures similar to those of DEGBPA, but with a higher degree of polymerization. They can be prepared with a method analogous to that used in the preparation of DEGBPA, although using amounts of epichlorohydrin and bisphenol in a ratio closer to 1: 1, and using a standard amount of NaOH (the "Welsh" process). Alternatively, the catalytic "chain extension" or "advancement" of liquid DEGBPA can be used to prepare solid epoxies by reacting the DEGBPA with additional bisphenol A. Relatively selective catalysts are used, which are typically basic inorganic reagents, such as NaOH, KOH, Na2C03 / LiOH, amines or quaternary ammonia salts. Since these systems require bisphenol A to extend the chain, they can be sold as precatalyzed liquid epoxy resins, where the buyer adds bisphenol A and allows the mixture to polymerize to the desired molecular weight. A technique similar to the "advance" technique of the reaction of DEGBPA with bisphenol A can be used to prepare "phenoxy resins", thermoplastic polymers whose molecular weight is greater than that of conventional epoxy resins. These resins lack terminal epoxide functionality. They are thermally stable, and can be manufactured by conventional thermoforming techniques. Its repeated unit is basically the same as that of an advanced epoxy resin. They are prepared by reacting high purity bisphenol A with epichlorohydrin in a molar ratio of 1: 1., or by reacting DEGBPA of high purity and bisphenol A in a molar ratio of 1: 1. Epoxy resins suitable for use in coating applications are often prepared by esterifying terminal epoxy groups or pendant hydroxyl groups in the polymer chain with fatty acids ("epoxy esters"). The resulting epoxies are used for air-dried, protective and decorative coatings. Multifunctional epoxies, such as epoxy phenol novolac resins (EPN) and epoxy cresol novolac resins (ECN), are also used commercially as epoxy resins. EPN resins are made by the glycidylation of phenol-formaldehyde condensates obtained by the condensation of phenols with formaldehyde (also known as novolacs) catalyzed by acid. The reaction with excess epichlorohydrin followed by dehydrohalogenation produces a novolac having glycylated halides of phenolic hydroxide. The ECN resins are prepared by an analogous method, using cresol instead of phenol in the condensation polymer with formaldehyde. Particularly ECN resins improved the properties of thermal and chemical resistance when cured. Another type of multifunctional epoxy resin is aromatic glycidyl amine resin. Examples include the resin obtained by the glycidylation of aminophenols, as in the case of the reaction of p-aminophenol with surplus epichlorohydrin, and the resin obtained by the glycidylation of methylenedianiline (MDA). The conditions of these reactions must be carefully controlled to avoid rapid polymerization and the resulting side reactions. Epoxy cycloaliphatic resins can be obtained by epoxidation of cycloolefins with peracids such as peracetic acid. These resins can also be obtained by hydrogenation of phenolic reagents such as bisphenol A, and forming from these glycidyl ethers. In order to form a solid, insoluble and hyperhard thermoset, the epoxy resin must be cured or degraded. Curing occurs by two different mechanisms, catalytic curing or co-reactive curing, and one or both may contribute to the curing of a particular system of epoxy resins. Catalytic curing occurs when a curing catalyst agent, generally a Lewis base or Lewis acid, initiates the homopolymerization of an epoxy resin. Tertiary amines, such as benzyldimethylamine or 2,4,6-tris (dimethylaminoethyl) phenol, are basic Lewis catalysts that are commonly used. It is thought that these catalysts work by reacting with the methylene carbon of the epoxy group to form an amphoteric ion, which then extracts a hydrogen from a hydroxyl moiety. The resulting alcoholate initiates the polymer chain, reacting with epoxy moieties and generating additional alcoholates at the other end of the polymer chain. Boron trihalides are commonly used Lewis acid catalysts, and are often made complexed with amines. It is thought that these amine complexes are thermally dissociated to form a proton that reacts with the epoxy group, thereby initiating curing. Epoxy resins can also be cured with cationic photoinitiators, such as aryl diazonium salts, diaryltonium salts and onium salts of Via group elements. The co-reactive curing occurs in the presence of a curing agent that acts as a comonomer or degradation agent during the curing process. Typically, the curing agent reacts with the epoxy and / or hydroxyl pendant groups in the main polymer structure. The coreactive curing agents typically possess active hydrogen atoms, for example phenols, alcohols, thiols, primary and secondary amines, and carboxylic acids. Primary amines are the most easily available and commonly used coreactive agents, and react twice as fast as secondary amines.

Aliphatic polyamines can cause dermatitis if not handled properly, and their active vial life is short. As a result, they are sometimes reacted with epoxy compounds to form adducts that are easier to handle and with a longer bottle life. For example, diethylenetriamine (a common commercially available amine curing agent) can be reacted with ethylene oxide to form a mixture of mono- and dihydroxyethyldiethylenetriamine, with a longer bottle life and fewer dermatological effects. The most common use of epoxy resins in the US It is in coating applications, and two-part systems of amine curing have been used for marine coatings and other types of maintenance where corrosion resistance is necessary. The curing of these resins typically takes about 7 days. However, the use of conventional aromatic epoxy systems in coating applications, where the coating is exposed to climatic conditions, can produce an "abatement" phenomenon. When conventional aromatic epoxy systems are exposed to moisture and ultraviolet radiation, as is very often the case during naval operations, the epoxy polymer degrades, causing the coating to become whitish and the polymeric surface to be sprayed, and The result is that the "naval gray" camouflage lining becomes white. It was discovered that the abatement phenomenon occurs during a period of between 3 and 12 months, depending on the type of curing system that was used in the epoxy resin. Although it is possible to retard to some extent the process of mixing by mixing additives that absorb ultraviolet radiation into the epoxy resin, or by mixing more light-stable resins, such as acrylics or silicates, in the epoxy, these approaches are not particularly desirable, since ultraviolet light absorbing additives are expensive, and because including other resins can compromise the excellent physical and chemical resistance of the epoxy resin system. Another method to avoid the ayesamiento is using a system of epoxy ciloalipáticas resins. One way to do this is to hydrogenate the aromatic rings of the epoxy. However, it was determined that the curing agents and epoxy resins of hydrogenated rings with a high percentage of free primary amines are not effective in solving the problems of the abatement. One reason for this is that when these hydrogenated epoxies are used with conventional primary amine hardeners, there is a residual excess of amines (or "blush") that forms on the surface of the coating. This blush then reacts with carbon dioxide from the water or atmosphere in the presence of ultraviolet radiation to form a carbamate in the coating, producing a coating whitening that is undesirable for many of the same reasons that the relief is undesirable. In fact, numerous attempts to avoid the phenomenon of flushing, ranging from using a rather prolonged pre-reaction period, to using primary amine curing agents to react with an aminopiperazine accelerator, in addition to the aminopiperazine accelerators, proved unsatisfactory. primary amine curing agents. As a result, hydrogenated epoxies have been used with hardeners containing primary amines of common use and commercially available for applications in which epoxies do not come into contact with moisture or UV radiation, that is, in indoor applications. They are not considered suitable for use in outdoor applications, and certainly not in marine applications. In these interior applications a primary amine hardener is used because it does not yellowish, and therefore does not distort pastel colors and other shades that are used in interior applications, which may include floor coverings and / or walls Often these applications require that the resin does not become yellowish when exposed to fluorescent lighting. It would therefore be desirable in the art to provide an epoxy coating system that: cures to form a tough thermosetting resin, of sufficient thickness to hold anti-slip aggregates; in which there will not be blushes or dressings; that is resistant to chemical attack and corrosion; that it has a low CVO content and that it can be applied without undue risks to the environment or to health; that does not require, but can be used with, ultraviolet absorbing compounds and light-stable resins; and that it is sufficiently durable to resist its use as a cover on flight decks without needing to be replaced during at least 12 to 18 months of aerial operations on flight decks. SUMMARY OF THE INVENTION These and other objects and advantages are obtained by means of the present invention, which is directed to a coating system of epoxy resins that possesses resistance to abatement and flushing, which is perfected with respect to other conventional epoxy resin systems. The epoxy resin system used in the present invention is a two part system containing a non-aromatic epoxy component and an amine hardening compound which is primarily formed with secondary and tertiary amine compounds, and which contains minimal amounts of compounds of primary amines. The epoxy component of the coating system contains aliphatic or cycloaliphatic epoxide polymers. The polymers can be linear or branched, multifunctional, liquid or solid, but generally contain alicyclic rings. Typically, more than 80% of the rings present in the polymer are non-aromatic. Additionally, the epoxy component may contain non-aromatic epoxy diluents designed to modify the functionality, viscosity, flexibility and curing speed of the resin. Specific diluents include trimethylol ethane triglycidyl ether. The hardening component of the coating system is primarily comprised of secondary amine compounds and tertiary amine compounds, and contains very limited, if any, amounts of primary amine compounds. As used in the present invention, the primary amine compounds are linear or branched, aliphatic or aromatic amines, including polyamines, having two or more halves of primary amines. The tertiary amine compounds are aromatic or aliphatic amines that do not possess primary or secondary amine moieties. The secondary amine compounds are branched, aliphatic or aromatic amines having at least one secondary amide or amine moiety and which are not primary amine compounds or tertiary amine compounds as defined herein. Primary amine compounds that are limited or excluded from the present invention tend to have relatively low molecular weights, generally less than 100, and in particular less than 50. Generally, the hardener component contains between 40% and 100% by weight of secondary amine compounds and tertiary amine compounds. The content of the primary amine compounds in the hardener component is generally limited to less than about 5% by weight, based on the weight of the hardener composition, and desirably less than about 1% by weight of the hardener. In particular, the hardener may comprise at least one compound with an end group of imidazole and additional compounds, such as polyamides or amidoamines, so that the total content of secondary amine compounds is within the aforementioned parameters. The epoxy coating system of the present invention can be mixed and applied at ambient temperatures, and cured to form a hard, insoluble and durable, hard, coating that can be applied at suitable thicknesses to retain anti-slip aggregates dispersed in the coating, and that can withstand the corrosive effects of exposure to seawater. The coating that results from the curing of the coating system, which by itself also forms part of the present invention, is capable of withstanding repeated take-offs and landings of aircraft, and contact with tail hooks and catapult cables for periods of at least 12 to 18 months. Since a non-aromatic epoxy polymer is used, the coating is able to withstand prolonged exposures to ultraviolet radiation and moisture without relief, thereby increasing the durability of the coating. Also, since minimum amounts of primary amines are used, the system of the present invention does not form a whitish flush on the surface of the coating in the presence of moisture. Although the coating system of the present invention assumes a yellowish color, this does not noticeably alter the color of the coating, which is typically a "naval gray", so that the camouflaging effects of the coating are not compromised. Since the coating is used in an outdoor application and is used to coat a surface of gray or black camouflage, the aesthetic effects of yellowing are of little importance. The present invention may be understood more clearly by reference to the following detailed description, with which it is not intended in any way to limit the scope of the present invention. DETAILED DESCRIPTION OF SPECIFIC MODALITIES The present invention relates to a two part epoxy curable coating system, wherein one part is an epoxy polymer. The epoxy polymer can be linear or branched, can be mono- or multi-functional, and can be a liquid or solid epoxy polymer. However, the aromaticity of the epoxy polymer is limited to being less than or equal to about 20% of the rings in the polymer. The lower the aromaticity of the epoxy polymer, the better, since a lower aromaticity provides a greater resistance to the aeration. Suitable epoxide polymers generally have an epoxy number in the range of from 100 to about 1,000 PEE (weight equivalent of epoxy, defined as the weight of the polymer in grams containing one gram equivalent of epoxide). Although any epoxy polymer may be used that matches the above limitations, it was found that the epoxides formed by the hydrogenated diglycidyl ethers of bisphenol A, described above, are particularly suitable. Although the precise order and specific types of reaction are not of critical importance for the practice of the present invention, it was found to be convenient to use hydrogenated bisphenol compounds to prepare the epoxy polymer component. In particular, in a first step, bisphenol A is hydrogenated under pressure in the presence of a catalyst to hydrogenate more than 99% of the aromatic rings, leaving less than 1% unhydrogenated material. The hydrogenated bisphenol A is then epoxidized with epichlorohydrin in the presence of a Lewis acid. The resulting product is then dehydrohalogenated with caustics and washed to produce the final epoxy polymer, which desirably has a residual chloride content as low as possible, in order to provide the best possible UV resistance properties. Other epoxy polymers that can be produced by the process described above, and used in accordance with the present invention, include those in the PEE range of between 100 and 1,000, and can be liquid or solid based on a bisphenol A chemistry. , bisphenol F or novolac. Additionally, these epoxy polymers can be mixed with non-aromatic diluents that are compatible and that modify the viscosity, cure speed, chemical resistance, etc., without affecting the UV resistance. The hardener component of the epoxy system contains secondary amine compounds and, optionally, tertiary amine compounds, although it contains very limited amounts, or none at all, of primary amine compounds. Without wishing to be bound by any theory, it is thought that the secondary amine compounds initiate the cure reaction to the belt with the epoxies. In the process, the secondary amine compounds are converted into tertiary amine compounds, which further accelerate the curing of other secondary amine compounds, and by the same unreacted or partially reacted epoxy compound. To achieve this effect without there being blush or flush, the amine hardener component can typically contain combinations of between 0 and 100% by weight of polyamide or amidoamine, and between 0 and 100% of imidazole products of the reaction of ethylene amines with fatty acids or dimeric acids, and optionally additive percentages of between 0 and 40% tertiary amines and / or hydrogenated epoxy resin between 0 and 20%. Secondary amine compounds suitable for use in the amine hardening component include those prepared from the TETA (triethylenetetra ine) families: TEPA (tetraethylenepentamine) and PEHA (pentaethylenehexamine) of primary amine compounds, in particular the reaction products of these amines with carboxylic acids to form carboxamides. Other amines and amine families may be used, but it was found that the families of amines described above are particularly suitable in terms of cost and performance. In particular, it was found that the amine reaction products of the above families of amines with fatty acids or dimeric acids are suitable: Fatty acid or ethyleneamine dimer acid (TEPA or TETA Amidoamine (eg TOFA) or polyamide These fatty acids may include, but are not limited to, wood pulp fatty acids (a mixture of linoleic and oleic acids) and / or vegetable fatty acids. Dimeric acids can be formed by the cyclization of unsaturated acids: TOFA Dimeric acid The reactions of amines, such as those belonging to the families described above, with fatty acids, generate polyamide and amidoamine curatives suitable for use in the hardener component of the present invention. The amine hardener component typically forms mixtures comprising an amount of an imidazole, with between about one to three halves of secondary amines, two cyclic halves of tertiary amines and one half of primary amine. Typically, the hardener compoon contains the imidazole compound in amounts of at least 50% by weight of the compoon, and contains polyamide or amidoamine compounds with 3 to 5 additional halves of secondary amines in amounts of about 50% by weight or less of the compoon of the hardener. The hardener compoon typically contains less than about 1% of the weight of the unreacted primary polyethylene amine. For example, an aminic hardener component prepared by reacting TEPA and a fatty acid of wood pulp can have the compoon: l mine where imidazole is present in an amount of about 60% by weight, amidoamine is present in an amount of about 39% by weight, and the ethylenic amine pound is present in an amount of less than 1% by weight. It is also possible to use compounds where all the amino moieties are secondary amines, amides or imidazole nitrogens. A proportion of the total amines in the compoon of the hardening amine can also be tertiary amine compounds, as described above. It is thought that these tertiary amine compounds function as basic Lewis catalysts and that they accelerate the bonding with secondary amine compounds, which often can be slow curing. Suitable tertiary amine compounds that can be included in the aminic hardener component include substituted phenolic amines, such as 2,4,6-tri (dimethylaminomethyl) phenol and dimethylaminomethylphenol. The proportion of tertiary amine compounds in the aminic hardener component is typically less than about 40% by weight, based on the total weight of amines in the aminic hardener component. Additionally, hydrogenated epoxy resins may be added to the hardener compoon at 0-20% by weight, but for the present invention it is often not necessary to form adducts. Other components may be included in the coating system of the present invention, such as thixotropes, solvents, fillers, aggregates, fibers, etc., which may be included in the hardener component, the epoxy component, or both. Thixotropes are included in amounts ranging from 5% to 40% by weight, based on the total weight of the coating system. Suitable thixotropes include those that are suitable for epoxy coating systems in general, such as fibrous minerals (e.g. wollastonite), aramid fibers, particles or splinters (such as KEVLAR), clays (such as bentonite, hectorite, smectite, atapulguite), amorphous condensation silicates (both treated and untreated), and waxes (such as polyamide waxes, hydrogenated castor oil). Solvents can be included in amounts of up to 20% by weight based on the total weight of the coating system, and are typically selected from those generally considered suitable for epoxy coating systems, such as xylene, methyl-n-ketone. -amyl, n-butanol, methyl isobutyl ketone, propylene glycol monomethyl ether, propylene glycol monomethyl ether, AROMATIC 100 (petroleum hydrocarbon), toluene and furfuryl alcohol. The fillers may be included in amounts ranging from about 25% to about 40% by weight, based on the total weight of the coating system. They work to extend the coating, thus decreasing the cost of application. Suitable fillers include barium sulfate, silica, nepheline syenite, calcium carbonate, aluminum oxide, talc, etc. Aggregates are also included to provide anti-slip properties to the coating, and may be added in amounts ranging from about 30% to about 50% by weight, based on the total weight of the coating system. Suitable aggregates include aluminum oxide, silica carbide, slag abrasives, aluminum powder, etc. The coating system of the present invention is typically prepared by mixing the non-aromatic epoxy polymer or hardener component with one or more of the above described components, as well as, optionally, air release additives, pigments and / or wetting additives. . The epoxide component is kept separate from the aminic hardener component until the coating system has to be applied. At that point, the aminic hardener component is mixed with the epoxy component in an amount ranging from about 1% to 20% by weight, based on the total weight of the coating system. The resulting mixture is then applied to the surface to be coated within a period of 10 to 60 minutes from the time of mixing. The mixture can be applied with roller, brush or spray on the surface to be coated, and given sufficient time to cure, typically between 24 hours to 3 days at 24 ° C. After curing, the coated surface can be used according to its function, for example for naval or marine flight deck operations. Although the coating applied in accordance with the present invention will produce some yellowing of the dark gray anti-slip cover surface, it will not flatten out or redden, and may remain in use in the presence of moisture, including salt water and ultraviolet radiation. for extended periods. If desired, the coating system of the present invention can be mixed with other compatible systems of light-resistant resins to obtain a hybrid coating. For example, acrylics, silicates, epoxy-silicates and other polymers compatible with the coating system of the present invention can be mixed in amounts of up to 40% by weight of the coating system. The present invention may be understood more clearly by reference to the following examples, which are intended to illustrate, and not to limit the scope of the present invention.

EXAMPLES The epoxy coating systems that follow were prepared according to the present invention (all percentages are percentages of the weight, based on the total epoxy system). 1 PEP 6180 is a hydrogenated epoxy resin produced by Pacific Epoxy Products; Epalloy 5000 is a hydrogenated epoxy resin produced by CVC Specialty Chemicals; Eponex 1510 is a hydrogenated epoxy resin produced by Shell Chemical. 2 Versamid 140 is a polyamide produced by Henkel Products. 3 Genamid 235 is an amidoamine produced by Henkel Products. 4 Ancamide 235 is an amidoamine produced by Air Products and Chemicals. 5 Ancamide 506 is an amidoamine produced by Air Products and Chemicals. 6 K54 / EH50 / EH30 are accelerators of substituted phenol. A typical manufacturing process for preparing these compositions includes: Part A Step 1: Add resin to the mixing vessel and begin to mix with high speed disperser. Step 2: Add solvents / additives / thixotropic; Mix 30 minutes at high speed. Step 3: Add fills and aggregates; Mix 10 minutes to complete the batch. Part B Step 1: Add hardeners to the mixing tank. Step 2: Mix 15 minutes to complete the batch. The present invention was then described with respect to its particular embodiments, and it will be apparent to those skilled in the art that various modifications and variations in the present invention are also within the scope of the appended claims, and their equivalents.

Claims (25)

1. CLAIMS 1. A two-part epoxy resin coating system, comprising: (a) an epoxy component comprising an aliphatic or cycloaliphatic epoxy compound; and (b) a hardening component comprising between 40% and 100% of the weight of an amine compound selected from the group consisting of secondary compounds of amines, tertiary amine compounds and mixtures thereof.
2. 2. The two-part epoxy resin coating system according to claim 1, wherein any primary compound of amines is present in amounts below 5% based on the weight of the hardening component.
3. 3. The epoxy resin coating system according to claim 2, wherein any primary compound of amines is present in amounts below 1% by weight.
4. 4. The epoxy resin coating system according to claim 1, wherein the amine hardening composition (b) comprises a tertiary amine compound.
5. 5. The epoxy resin coating system according to claim 1, wherein the amine side compounds are present in an amount of between 70% and about 100% of the amine hardening composition (b).
6. The epoxy resin coating system according to claim 1, wherein the system can be cured at temperatures ranging from about 4 ° C to about 66 ° C, without the need for a subsequent curing step or high programming of curing.
7. The epoxy resin coating system according to claim 1, wherein the epoxy component (a) is present in an amount ranging from about 80% to about 99% by weight, and wherein the hardener component (b) it is present in an amount ranging from about 1% to about 20% of the weight based on the weight of the total resin coating system.
8. 8. The epoxy resin coating system according to claim 7, wherein the epoxy component comprises, based on the weight of the total resin coating system, about 5% to about 40% of the weight of the epoxy compound, about 0.5. % to about 5% by weight of thixotropes, up to about 20% by weight of solvents, approximately 25% to about 40% by weight of fillers, and about 30% to about 5% by weight of aggregates.
9. 9. The epoxy resin coating system according to claim 1, wherein the epoxy component (a) comprises a hydrogenated epoxy resin having cyclic hydrocarbyl moieties, of which at least 80% are non-aromatic.
10. 10. The epoxy resin coating system according to claim 1, wherein the epoxy component (a) has an epoxy content in the range of between about 100 to about 1,000 pee.
11. 11. The epoxy resin coating system according to claim 1, wherein the epoxy component (a) comprises a mixture of the aliphatic or cycloaliphatic epoxy compound with some other compatible polymer.
12. 12. The epoxy resin coating system according to claim 11, wherein the compatible polymer is selected from the group consisting of acrylic polymers, silicone polymers, epoxy silicates polymers and mixtures thereof.
13. The epoxy resin coating system according to claim 11, wherein the compatible polymer is present in an amount greater than 0% by weight and less than or equal to 40% by weight based on the weight of the epoxy component.
14. 14. An epoxy resin coating obtained by mixing the epoxy component (a) and hardener component (b) of the epoxy resin coating system of claim 1, and subjecting this mixture to conditions sufficient to form a solid, hyperdurable and insoluble resin.
15. 15. The epoxy resin coating of claim 14, wherein the conditions include a temperature ranging from about 4 ° C to about 66 ° C.
16. 16. An anti-slip and weather resistant and ultraviolet radiation coating comprising: (a) a matrix phase comprising an aliphatic epoxy resin cured with a secondary or tertiary amine hardener; and (b) a dispersed phase comprising particles selected from the group consisting of aramid particles, aramid fibers, mineral particles and mineral fibers.
17. 17. A two part epoxy resin coating system comprising: (a) an epoxy component comprising an aliphatic or cycloaliphatic epoxy compound; and (b) a hardening component comprising at least 50% of the weight of an imidazole having between one and about three secondary amine halves, two cyclic tertiary amine halves and one primary amine moiety.
18. 18. The epoxy resin coating system according to claim 17, wherein the hardening component further comprises 50% by weight or less of compounds selected from the group consisting of polyamides and amidoamines having between about three and about five halves of secondary amines.
19. 19. The epoxy resin coating system according to claim 17, wherein the hardening component has less than about 1% by weight polyethylene amine.
20. 20. A two-part epoxy resin coating system comprising: (a) an epoxy component comprising an aliphatic or cycloaliphatic epoxy compound; and (b) a hardening component comprising the reaction product of (1) a triethyleneaminotetramine, a tetraethylenepentamine, a pentaethylenehexamine, or a mixture thereof, with (2) a fatty acid or dimeric acid.
21. 21. The epoxy resin coating system of claim 20, wherein the fatty acid is a fatty acid from wood pulp or vegetable oil fatty acid.
22. 22. A method for providing a durable and weather-resistant anti-skid coating to a marine aviation flight deck comprising the steps of: (1) mixing (a) an epoxy component comprising an aliphatic or cycloaliphatic epoxy compound with ( b) a hardening component comprising between about 10% by weight and about 100% by weight of an amine compound selected from the group consisting of secondary amines, tertiary amines and mixtures thereof, and with (c) anti-slip aggregates; (2) apply the resulting mixture to the surface of a marine aviation flight deck; and (3) allow the mixture to cure.
23. 23. The method of claim 22, wherein the anti-slip aggregates (c) are premixed with the epoxy component (a) or hardener component (b), or both.
24. 24. The method according to claim 22, wherein the hardening component contains less than about 5% of the weight of primary amine compounds. The method of compliance to claim 24, wherein any primary amine compound is present in amounts below 1% by weight of the hardening composition.