Water-based hydrogel blend coating and method for applying it to elastomer articles.

Abstract

To provide a method for producing a water-based hydrogel polymer coating, and an elastomeric article having the coating.SOLUTION: A method for producing a coating includes combining a water-based hydrogel polymer, a first elastomeric material, and a second elastomeric material to form a coating compound, wherein the first elastomeric material is selected from the group consisting of natural rubber latex and polyisoprene latex, the coating compound is free of added solvents, and the second elastomeric material is nitrile latex.SELECTED DRAWING: None

Description

Technical Field

[0001] In this specification, an aqueous hydrogel coating for natural rubber or synthetic rubber articles, and also a method of applying an aqueous hydrogel coating blend, specifically a blend of a hydrogel and an elastomeric material, including the coating are provided.

Background Art

[0002] Medical articles, such as gloves, and other elastomeric articles, often come into contact with liquids and fluids during use. Such articles form a barrier between the user's skin and the external environment. Medical gloves, such as examination gloves and surgical gloves, are examples of articles used in a healthcare environment, and they play an important role in minimizing the spread of infectious diseases. Such articles are frequently used by healthcare workers. Therefore, it is important for medical articles, such as gloves, to provide an effective barrier while providing an appropriate level of comfort to the user. On the other hand, uncoated latex articles, such as surgical gloves, can have insufficient lubricity that makes it difficult to wear the glove on a human hand in both wet wearing (e.g., wearing the glove when the skin is wet) and dry wearing (e.g., wearing the glove when the skin is dry). Therefore, the application of a coating to these elastomeric articles can be used to provide an inner surface that is smooth, not slippery, and in contact with the skin, for example, to facilitate wearing the coated article. These coated articles also preferably have a coating that does not peel off. ​​​​​​​​​​​​​​

[0003] Rubber and synthetic latex products, such as surgical gloves, condoms, finger cots, catheters To enhance the lubrication of the product when it comes into contact with the user's skin, such as on the ureter, probe cover, and ureter. Using lubricants or other coatings for this purpose is known in the art. One such method involves using powders, such as calcium carbonate and cornstarch. A substance containing citric acid is applied to the inner surface of surgical gloves that comes into contact with the skin, making it easier to put on the gloves. The solution was to use a lubricant. However, powder lubricants are difficult to use. This may be undesirable due to the risk of leakage from inside the bag and contamination of the surgical site. Furthermore, certain starch particles can trigger latex allergies in some glove users. It may become a carrier of latex allergens, potentially causing allergic reactions.

[0004] In other methods, a powder-free lubricant coating is applied to the inner surface of the glove. For example, a polymer coating, such as a hydrogel coating, can be used on gloves. It can be applied to. When a hydrogel coating is applied to gloves, it is a solvent medium, for example. For example, it is often supplied with ethanol, etc., to maintain the polymer in the solution. The use of solvent systems is undesirable because solvents are typically expensive and pose a fire risk. It can pose a danger and leads to environmentally unfriendly waste disposal problems. Furthermore, Solvent-based hydrogel polymer solutions tend to have a short pot life, for example, only a few weeks. There is a direction to which the solution must be used and applied as a coating.

[0005] Adding undesirable solvent systems to the formulation of these hydrogel coatings Furthermore, the application methods for these solvent-based systems can result in expensive and cumbersome processes. Yes. Specifically, before applying the polymer coating to the surface of the gloves, for example, latex The custard or rubber is heat-dried and then further treated with a chemical priming process. Preparation of rubber or latex surfaces for receiving hydrogel polymer solvent-based coatings. The chemical priming process is carried out before the subsequent immersion in the coating solution, using rubber or This may include immersing latex articles in acidic solutions or other harsh chemicals. Yes, it is possible. After immersion in acid or other harsh chemicals, the items are rinsed and the residue remains. Removes dilute acids or chemicals. Chemical priming process in the glove coating process. The use of it results in additional, undesirable, time-consuming, and expensive steps. Moreover, The acids or chemicals used during the priming process must also be disposed of later, and additionally This creates a waste disposal process that incurs additional costs.

[0006] After applying the solvent-based hydrogel coating, additional processing is required to dispose of the solvent waste. A processing step is required. Since the solvent is not environmentally friendly, special treatment is required before disposal. Furthermore, the process is made fireproof, and all flammable solvents used in the hydrogel solution are removed. Special precautions and procedures must be taken to prevent ignition.

[0007] Therefore, to coat elastomer articles, aqueous hydrogel coatings There is a need for it. [Overview of the Initiative]

[0008] Improvement of the lubricity of an elastomeric article coated with an aqueous hydrogel coating, In the case of gloves, an aqueous hydrogel coating is provided that facilitates improved donning. Specifically an aqueous hydrogel blend coating solution is provided that includes an aqueous hydrogel and at least one elastomeric material and does not require a solvent medium. Further, a method is provided for applying an aqueous hydrogel blend coating composition having an improved process that does not require an acidic primer or other chemical priming step to an elastomeric article. In one embodiment, the aqueous hydrogel blend coating composition can be supplied such that at least one of the elastomeric components of the hydrogel blend solution is the same as or similar to the elastomeric material of the final elastomeric article.

[0009] The aqueous hydrogel coating can be formed by combining an aqueous hydrogel and one or more elastomeric materials, and in one aspect, an aqueous hydrogel blend coating can be formed using a blend of two or more elastomeric materials. In one aspect, the elastomeric blend can include two or more elastomeric materials, and in one example, can include another elastomer similar to nitrile rubber and the base article material. This aqueous hydrogel blend is applied to a natural or synthetic rubber latex material to result in a final article that is coated with a hydrogel blend coating on at least one surface. The final article to be coated can be any elastomeric article that can benefit from improved lubricity, and in one aspect In this way, medical gloves, surgical gloves, examination gloves, industrial gloves, condoms, finger cots can be mentioned, but are not limited thereto .

[0010] The blend formulation enables a coating solution with a higher solids content and is beneficial for improving the lubricity of the final elastomeric article and remains adhered to the article despite having a high solids content. In contrast, the non-blend formulation, similarly having a high solids content, cannot retain the adhesion of the coating and thus cannot be coated with a high solids content on the elastomeric article. The higher solids content allows more coating to be applied per surface area of the glove, which in turn provides an increase in lubricity. The final coated elastomeric article coated with the aqueous hydrogel blend disclosed herein can have improved lubricity compared to an article coated with hydrogel alone and can further facilitate improvements in both donning of the elastomeric glove article, e.g., when the skin is wet (e.g., wet donning) and when the skin is dry (e.g., dry donning).

[0011] The method of applying an aqueous hydrogel blend coating to an elastomeric article can reduce the number of required process steps compared to the solvent-based coating process heretofore. Specifically, no acidic or other chemical primer step is required prior to the application of the hydrogel blend coating. In one aspect, the elastomeric glove material is coated in a process using the hydrogel blend coating disclosed herein ​​​​​​​​​​​​​​It is possible. The glove material is made by conventional glove formation processes, such as the adhesion immersion method. It can be manufactured. The glove-shaped material is immersed in latex material, then dried, under acidic conditions. Hydrogel blend coating that does not require a coating or other chemical priming process. They are immersed again in the solution. In another embodiment, the gloves are used to improve the wet and dry wearing of the gloves. It can be provided using a coating material that enhances the grip of the gloves during use. This allows for the creation of a surface that retains a tactile feel for improved performance.

[0012] Water-based hydrogel blends are related to the use of solvent-based hydrogels in manufacturing facilities. It is beneficial because it is solvent-free, which can avoid several related flammability issues. Furthermore, compared to solvent-based formulations, water-based formulations result in less material waste and disposal. Making water-based formulations more environmentally friendly. Solvent-based formulations add cost and processing time, and are environmentally friendly. It requires the disposal of harmful solvent materials that are not kind to the environment. Moreover, the aqueous hydrogel blend The shelf life is increased compared to solvent-based hydrogel systems, thereby increasing the shelf life of aqueous hydrogels. Blended formulations can be stored for a longer period before use.

[0013] Coating elastomer articles with an aqueous hydrogel blend is a hydrogel Compared to coating with the coating alone, this is even more beneficial. Lublende mixtures exhibit improved mechanical properties compared to hydrogel coating mixtures alone. Furthermore, it has thermal stability. In addition, the hydrogel blend is a hydrogel coating alone. Compared to others, it has superior adhesion to elastomer substrates. Applying Rogel alone to elastomer articles presents several technical challenges. One of them is that the hydrogel coating on the elastomer article is the elastomer article base There is a possibility of delamination from the material. To overcome the delamination problem, elastomer material The surface of the product can be primed with harsh chemicals. However, this is elusive. This can cause deterioration of the physical properties of the Tomar article itself. The method involves coating elastomer articles with a coating solution that has a low total solids content. This is possible. However, a low total solids content may reduce the performance of the coating. Yes, and subsequently, this can result in insufficient dry or wet lubrication. Another method is polymer —By incorporating a lattice, it may be possible to modify the hydrogel material alone.

[0014] In one embodiment, an elastomer glove may be formed, and then, as disclosed herein, They can be coated with a water-based hydrogel blend. In one embodiment, the gloves are natural It may be formed from rubber latex, then hydrogel, natural rubber, and a second elastomer. It can be immersed in a hydrogel blend containing a mer material, such as nitrile latex. The amount of natural rubber in the blend can exceed the amount of nitrile latex in the blend. In another embodiment, the amount of natural rubber latex in the blend is equal to the amount of nitrile latex in the blend. The amount may be the same as that of natural rubber. In yet another embodiment, the amount of nitrile in the blend is the same as that of natural rubber. It can exceed that.

[0015] In another embodiment, the gloves may be formed from synthetic rubber latex, and then hydro Coating in a hydrogel blend containing gel, synthetic rubber, and a second elastomer material It can be made. In one embodiment, the glove may be formed from synthetic rubber latex, and then Therefore, hydrogels, synthetic rubbers, and second elastomer materials, such as nitrile latex. It can be immersed in a hydrogel blend containing the following. The amount of synthetic rubber in the blend is The amount of nitrile latex in the tubing can be exceeded. In another embodiment, synthetic rubber latex The amount of nitrile latex may be the same as the amount of nitrile latex in the blend. In this case, the amount of nitrile in the blend can exceed that of synthetic rubber. Preferred implementation In form, the synthetic rubber and blend of the article is polyisoprene. In the application form, at least one of the elastomer materials present in the hydrogel blend is It may be the same as the elastomer material used in elastomer articles. [Brief explanation of the drawing]

[0016] [Figure 1] This is a flowchart of an exemplary coating process using the aqueous hydrogel blend disclosed herein.

[0017] [Figure 2A] This is a 100x magnification SEM scan image of a glove that has been stretched and then coated only with hydrogel.

[0018] [Figure 2B] This is a 100x magnification SEM scan image of a glove coated with a hydrogel blend after stretching, showing the unaffected local coating surface of a glove coated in the aqueous hydrogel blend disclosed herein.

[0019] [Figure 3A] This is a 100x magnification SEM scan image of a glove coated with hydrogel only, without stretching, showing the local coating surface of the glove after immersion in aqueous hydrogel alone.

[0020] [Figure 3B] This is a 100x magnification SEM scan image of a glove coated with a hydrogel blend without stretching, showing the local coating surface of the glove after immersion in an aqueous hydrogel blend composition.

[0021] [Figure 4A] This is a SEM scan image of a polyisoprene glove coated with a hydrogel-polyisoprene-nitrile blend, shown at 100x magnification.

[0022] [Figure 4B] This is an SEM scan image of a polyisoprene glove coated with only a hydrogel coating, shown at 100x magnification.

[0023] [Figure 5] This is a flowchart of a second exemplary coating process using the aqueous hydrogel blend disclosed herein.

[0024] [Figure 6A] This is a SEM scan image of a polyisoprene glove coated with a hydrogel-polyisoprene-nitrile blend, shown at 100x magnification.

[0025] [Figure 6B] This is a 100x magnification SEM scan image of a polyisoprene glove coated only with hydrogel without stretching, showing the local coating surface of the glove after immersion in aqueous hydrogel alone.

[0026] [Figure 7A]This is a SEM scan image of a polyisoprene glove coated with a hydrogel-polyisoprene-nitrile blend, shown at 500x magnification.

[0027] [Figure 7B] This is a 500x magnification SEM scan image of a polyisoprene glove coated only with hydrogel without stretching, showing the local coating surface of the glove after immersion in aqueous hydrogel alone.

[0028] [Figure 8A] This is a SEM scan image of a polyisoprene glove coated with a hydrogel-polyisoprene-nitrile blend, shown at a magnification of 1000x.

[0029] [Figure 8B] This is a 1000x magnification SEM scan image of a polyisoprene glove coated only with hydrogel without stretching, showing the local coating surface of the glove after immersion in aqueous hydrogel alone. [Modes for carrying out the invention]

[0030] Aqueous polymer blend composition for coating elastomer articles, Methods for applying coatings to elastomer articles are described herein. As shown in Figures 1-8B, the polymer blend composition is at least one elastomer material and an aqueous hydrogel composition, and, in one embodiment, at least two elastomer materials It can be formed by blending with an aqueous hydrogel. In another embodiment, The blend of elastomer materials is particularly important when the elastomer articles to be coated are made from natural rubber. When manufactured, it may contain a blend of natural rubber and nitrile. In yet another embodiment... Furthermore, the blend of elastomer materials is particularly important for the synthesis of elastomer articles that are to be coated. When made from rubber, it may include a blend of synthetic rubber and nitrile. In this context, the synthetic rubber is polyisoprene. The coating material is an elastomer article. The lubricity can be improved, and in the case of elastomer gloves, the user can improve the lubricity of the gloves. The wearability can be improved. Specifically, the coating on at least one surface of the glove The coating (e.g., the inner surface that comes into contact with the skin) is applied for the purpose of wearing, using powder materials or other materials. This eliminates the need to add lubricant to the surface of the glove that comes into contact with the skin. Therefore, coated gloves can be made powder-free.

[0031] The polymer blend composition contains an aqueous hydrogel polymer. The hydrogel polymer is It may be a hydrophilic polymer. Hydrogels may also be acrylic polymers. In terms of form, hydrogels can be synthetic acrylic polymers. Hydrogel polymer This may include any known in the art, and in one embodiment, N obel Synthetic Polymer Sdn.Bhd., (Selango It may be an aqueous hydrogel polymer provided by (r, Malaysia). One embodiment In this context, the hydrogel polymer consists of over 15% synthetic acrylic polymer and approximately 5% unsynthetic acrylic polymer. It may contain a full amount of additives and the remainder consisting of water. Acrylic polymers are used. This may be known in the art. Hydro provided in the final hydrogel blend composition The amount of Rogel is large compared to at least one or more elastomer materials. It can include Roger.

[0032] The elastomer material provided in the polymer blend composition is used for the production of elastomer articles. It can be any of the materials typically used in natural rubber and / or synthetic elastomers. It may include mer. As for natural rubber that can be used, in the art, Known Hevea rubber latex and guayul rubber latex, and any other natural rubber Examples include rubber made from rubber. Synthetic rubber elastomers that can be used include... It is polyisoprene, polychloroprene, polyurethane, polybutadiene, nitrile, s Tylene butadiene rubber, styrene and butadiene block copolymer, styrene and isop Examples include block copolymers of len, and mixtures of these elastomers and vinyl. Other synthetic rubbers that can be used include acrylic diene block copolymer, acrylic Lyl rubber, butyl rubber, EPDM rubber, chlorosulfonated polyethylene rubber, and fluorine Raw rubber can be cited. In one embodiment, at least one of the elastomer materials is that it The base material of the lastomer article can be selected to be the same as or similar to the base material. For example, if the elastomer article is a glove made from natural rubber, hydroblenn The coating composition may contain at least hydrogel and natural rubber. In another example, when the glove material is made from synthetic polyisoprene latex material... The hydrogel blend composition contains at least the hydrogel and elastomer components. It may also include synthetic polyisoprene, etc. In another example, the elastomer material is It may differ from elastomer articles. For example, natural rubber elastomer articles, hydrogelbrene. The material may include a hydrogel and at least one synthetic rubber elastomer.

[0033] In one embodiment, the hydrogel blend composition is the same material as the base material of the final article. A first elastomer material corresponding to the first material, and a second elastomer material which is optionally different from the first material. - It may include a hydrogel made by mixing materials. Therefore, in one aspect, Elast When Tomar articles are made from natural rubber, the Hydrogel blend composition is made from natural rubber. A first elastomer material, and another elastomer different from the first material, such as nitrile or A second elastomer material, which is a tomer polymer, may be included. And, if the elastomer article is a natural rubber glove, the hydrogel composition is the elastomer material One of the materials may include natural rubber latex, for example, natural rubber latex It can contain up to approximately 37 phr of s. In another embodiment, natural rubber latex The amount of kus is approximately 12.5 to 37 phr, specifically 19 phr, and is included in the blend. This is possible. The second elastomer material in the hydrogel blend is, for example, nitrile It can contain nitrile latex. Nitrile latex can be included in amounts up to approximately 25 phr. This is possible. In another example, nitrile latex is used in amounts of approximately 0.5 to 25 phr. Specifically, it can be included in the blend in an amount of about 6 phr. Therefore, nitrile latex The compound can have a bound acrylonitrile content of approximately 28%.

[0034] In another embodiment, the elastomer article is made of synthetic rubber, specifically, for example, polyisopropyl alcohol. In the case of gloves made from materials such as Ren, the hydrogel blend is the base glove material, i.e. Polyisoprene may be included in the blend. Isoprene or other synthetic rubbers are at levels up to about 15 phr, especially at about 7.5 phr. It can be included in quantity. In one embodiment, polyisoprene is included in an amount of about 4 to 11 phr. It is possible. Furthermore, the polyisoprene blend also contains a second gill in the coating solution. It may include an elastomer material, in one example, the second elastomer may be a nitrile. Nitrile latex is included in amounts up to approximately 15 phr, especially in amounts of approximately 7.5 phr. In one embodiment, nitrile can be included in an amount of about 4 to about 11 phr. Nitrile latex can have a bound acrylonitrile content of approximately 28%. ru.

[0035] Without being bound by theory, add at least one additional elastomer material to the base material. This addition is achieved by introducing it into a blend that already contains the corresponding first elastomer material. The elastomer component may disrupt the continuous film properties of the aqueous hydrogel coating. It has properties that support lubrication loading and reduce the contact area with the user's skin. , which may further provide gaps and irregular domains, and therefore the final coat Dry and wet wear of coated articles may increase lubrication and potentially achieve greater performance. It is obtained. In effect, the first elastomer material, which is similar to the base material of the article, is It can provide adhesion of the Drogel coating to the article. On the other hand, the first elas The addition of at least a second elastomer material different from the tomer material enhances the continuity of the coating. It could potentially break the low, and therefore, some could improve wearability as it is not flat. Hydrogel blend coating provides peaks and valleys, resulting in a unique shape on the surface. Furthermore, it reduces the tendency for gloves to stick together when they are pressed flat for packaging. And as a result, even if the two inner coated surfaces of the same glove come into contact, Unlike gloves coated with only Roger's coating, they do not stick to each other. If only one elastomer material is supplied with the hydrogel, the coated surface will be somewhat It may become flat. In contrast, at least a second elastomer material in the blend When added, it provides a surface with more gaps and irregular domains, and gloves It can result in a tactile surface created on the coated surface. The textured surface is such that only the protruding "peaks" of the coating come into contact with the user's skin. Therefore, it can reduce the contact area with the user's skin, and thus improve wearability. It includes at least one elastomer material that is similar to the base material of the elastomer article. By doing so, the combination also allows for the addition of an aqueous hydrogel blend to the base elastomer article. It is believed that this can provide the necessary chemical affinity to enhance adhesion. This is because a higher level of lubricant (for example, cetylpyridinium chloride (CPC)) is used. It may be even more beneficial to enable the processing to be used. The coating adhesion is good. In the case of high-grade coatings, specifically, as in the case of hydrogel-only coatings, When treated with Bell's lubricant (e.g., CPC), the coating becomes an elastomer surface. It peels off the surface. Higher levels of CPC added to coated gloves also This can help improve the use of wet gloves.

[0036] In one embodiment, if the final elastomer article to be coated is a glove, For example, base gloves are made from natural rubber, and the natural rubber used to make base gloves Natural rubber contains stabilizers, crosslinking agents, vulcanization activators, vulcanization accelerators, antioxidants, ozone decomposition inhibitors, And optionally, it can be mixed with white or other colored pigments. In another embodiment, And, if the final elastomer article to be coated is a glove, then, for example, the base The gloves are made from synthetic rubber, such as polyisoprene, and in order to make the base gloves The polyisoprene used is used as a stabilizer, crosslinking agent, vulcanization activator, vulcanization accelerator, antioxidant, It can be mixed with an ozone decomposition inhibitor and optionally with white or other colored pigments. ru.

[0037] Aqueous hydrogel blend compositions consist of approximately 50% to approximately 99% hydrogel and approximately 0.5% to approximately It contains 37% primary elastomer and approximately 0.5% to 25% secondary elastomer. This is possible. In one example, the final coating composition contains about 7 It can contain 5% aqueous hydrogel and approximately 25% elastomer blend. In another embodiment, the hydrogel blend composition is approximately 50% to approximately 99% hydrogel It contains approximately 0.5% to 37% natural rubber latex, and approximately 0.5% to 25% Nitori It may contain Lulatex. In one embodiment, the hydrogel blend is 75~ It can contain 85% hydrogel, 19% natural rubber, and 6% nitrile. In other embodiments, the hydrogel blend contains about 12% to about 40% of the first elastomeric compound. The tomer material and the remaining components in the coating composition after the hydrogel has been incorporated are A second elastomer material may be included, in one example, the first elastomer material is It can contain approximately 12.5% ​​to 37%. Only one elastomer material can be hydrogel. When blended, the hydrogel makes up approximately 50% to 99% by weight of the coating solution. It can be supplied in the range of hydrogels, and one elastomer material is approximately 5% to approximately 35% It can be supplied in %. Synthetic rubber latex articles, such as polyisoprene, etc. In another embodiment, the hydrogel blend composition is approximately 75% to approximately 85% aqueous hydrogel Rogel and elastomer blends that make up approximately 10% to 20% of the hydrogel blend composition. It may contain a blend. For example, the hydrogel blend may contain 75-85% hydrogels. It is a gel, containing approximately 4% to 11% of a primary elastomer material, such as polyisoprene latex. This includes materials such as acrylic, and approximately 4% to 11% of a second elastomer material, such as nitrile latex. It may include things like . In another example, a hydrogel blend may contain 75-85% . It is a gel, and contains approximately 7.5% of a primary elastomer material, such as polyisoprene. It may also contain 7.5% of a second elastomer material, such as nitrile.

[0038] Hydrogel blend compositions have a higher total solids content compared to hydrogel alone. More specifically, the hydrogel blend composition can be between approximately 3.0% and approximately 7%. It can have total solids. In one example, the total solids content ranges from 3.5% to approximately 5%. It can be provided. In one embodiment, the target is a total solids content of about 4%.

[0039] Elastomer articles are produced using a hydrogel composition alone, without the addition of elastomer materials. Coating with only this material results in insufficient coating adhesion to elastomer articles. It brings about. Specifically, a hydrogel-only coating is a coated elastomer. Marbled items may cause the coating to peel off, and the coating may also be salt It may wear down during the composting process. In addition, the formed elastomer article may be a glove. In some cases, the inside exhibits a non-slip surface. Furthermore, all hydrogel coatings are fully solid. If the amount is too much or too little, the result will be insufficient, for example, the inner slipperiness, insufficient This can lead to poor wear characteristics and a "damp" appearance of the final product. Finally, lubricant For example, post-treatment using CPC, etc., is used for coating compositions consisting only of hydrogels. When applied to coated items, the powder content must meet the specifications for powder-free gloves. To enable this, the amount of lubricant must be drastically reduced; otherwise, it will be terrible. Rogel-only coatings peel off the surface of elastomer articles, forming powdery fine particles. There is a possibility that this will happen.

[0040] In contrast, the hydrogel blend coating composition is a hydrogel-only coating. Compared to other methods, it improves adhesion to elastomer articles. Furthermore, it has a high solids content blend. The coating can be used without any problems being observed in the final product. A high solid content is desirable as it improves the final lubrication of the article. Hydrogel Blend Coating The coating can also provide a unique coating surface morphology to the coated article. Furthermore, its surface shape prevents slippage on the inside and improves the wearing of items such as gloves. This facilitates the process and prevents the final product from having a "damp" appearance. Furthermore, Hydrogel blend coating compositions allow for more robust post-processing, for example, more This makes it possible to process gloves coated with various lubricants, etc.

[0041] Water-based polymer blend compositions have a much longer shelf life than solvent-based polymer compositions. It can have. The solvent-based polymer composition used in the coating of gloves is Typically, they have a very short pot life and process constraints, for example, once the solvent is created. This may impose the need for almost immediate use of the system materials. In contrast, water-based polymer blends This allows for longer storage periods and enables longer storage of the composition before use. For example, However, the pot life of a solvent-based polymer composition can be about 3 to 4 weeks, while that of an aqueous polymer... The pot life of the blend composition is up to about 6 months, as disclosed herein. It is possible.

[0042] Furthermore, water-based polymer blends do not pose a fire hazard compared to solvent-based materials, making manufacturing easier. And it is safer to use in manufacturing facilities. Main solvent-based polymer coatings The essential components are readily flammable solvent-based materials, such as alcohol. Water-based polymers. In performing the blending process, no additional capital investment is required to address operational safety concerns. This is crucial, and this is why water-based polymer blend coatings are used on different manufacturing platforms. To facilitate execution between systems. Solvent-based materials have high disposal requirements due to special handling of solvents. Water-based polymers can be costly and are not environmentally friendly, whereas It is much easier and much more costly to handle the wastewater through the existing wastewater treatment equipment within the facility. It doesn't cost anything.

[0043] Elastomers that can be coated with aqueous polymer blends as disclosed herein The product can benefit from any improved lubrication of the final product. It may be an elastomer article. Elastomer material that can be used to manufacture an article. Examples include natural rubber and synthetic rubber latex materials, such as polyisoprene, poly Chloroprene, polyurethane, polybutadiene, nitrile, styrene and butadiene bro Examples include block copolymers and block copolymers of styrene and isoprene. However, these are not limited to these. Examples of final articles resulting from selected elastomer materials include: Examples include gloves, catheters, condoms, probe covers, finger cots, and ureters. It is possible.

[0044] In one embodiment, the elastomer material is used for gloves, specifically surgical gloves or examination gloves. It can be prepared into gloves. After the gloves are formed, the gloves are in the polymer blend composition. It can be immersed in and coated on at least one surface of the glove. At the very least, it is preferable to coat the inner surface, i.e., the surface that comes into contact with the skin. If the bag is formed on a mold or glove mold or mandrel, for example, if it comes into contact with the skin The surface is exposed or located on the outside of the glove. Therefore, the glove is polymer-resistant. When immersed in an aqueous solution of the coating, the outer surface is coated, but the surface later After the glove is removed from the mold and turned inside out, the surface that comes into contact with the skin becomes the inner surface.

[0045] In another embodiment, the elastomer material is immersed in a glove-shaped natural rubber latex material. By doing so, the gloves may contain natural rubber latex, and then natural The rubber gloves are immersed in a polymer blend composition to coat at least one surface of the gloves. In yet another embodiment, the elastomer material used in the final product is a synthetic compound. Polyisoprene material may be included, and synthetic polyisoprene material can be used to make gloves. By immersing in latex material, the gloves are first formed, and then polymer Immerse in the blended coating solution. For any selected elastomer material, A similar process can be performed.

[0046] In one embodiment, the polymer blend composition comprises about 75% by weight of an aqueous hydrogel, It contains 19% by weight of natural rubber latex and approximately 6% by weight of nitrile latex. Yes, it is possible. In another embodiment, the polymer blend composition contains about 75% by weight of aqueous hydro Contains gel and roughly equal amounts of elastomer material, or about 12.5% ​​by weight of each. It is possible. In yet another embodiment, the polymer blend composition is about 75% by weight A water-based hydrogel, approximately 6% by weight of natural rubber latex, and approximately 19% by weight of nitrile latex. It may contain tex. For example, the polymer blend composition contains about 85% tex. It can contain a gel, 4% polyisoprene, and 11% nitrile. Another example In this polymer blend composition, approximately 85% hydrogel and 11% polyisoprene , and may contain 4% nitrile. In another example, polymer blend composition It consists of approximately 85% by weight hydrogel, and approximately 7.5% by weight polyisoprene, and 7.5 It may contain nitrile by weight.

[0047] Optionally, other components, such as surfactants or biocides, may be added to the coating. It can be added to the product. Possible surfactants are anionic and / or nonionic surfactants. A fertile agent, for example, sodium lauryl sulfate and / or ethoxylated nonylphenol. It is also acceptable. Anionic and / or nonionic surfactants are specifically elastomers. - When the material is added to the coating composition, it helps to improve the coating stability. This is possible. In one embodiment, a nonionic surfactant, for example, Igepal CO630 Other similar surfactants may be provided. In another embodiment, anionic surfactants Agents such as Darvan® WAQ or other similar surfactants are provided. It is possible. In one embodiment, nonionic and anionic surfactants are added. Biological agents are also optionally added to the coating solution to modify the bio-components of the coating solution. The filtration level can be controlled. In one example, the biocide used is Biog It could be ard or other similar biocides.

[0048] In another optional step, the coated article is treated with a lubricant after coating. For example, post-treatment using cetylpyridinium chloride (CPC) may be included. In this embodiment, the coated article is coated with an antifoaming agent, as well as other lubricants, such as silicone. Post-treatment with cone and / or ammonium salts of alkyl phosphates It may also include, for example, an antifoaming agent, such as Dow Corning Co. Antifoam 1920 and other materials manufactured by the company are supplied. Obtain. In another example, silicone emulsion, e.g., Momentive Perf SM2140 and other materials manufactured by Ormance Materials are supplied. M2140 contains polydimethylsiloxane, nonoxynol-20, and laureth- Includes 23. In yet another example, ammonium salts of alkyl phosphates, for example V Darvan, manufactured by Anderbilt Chemicals, LLC (Registered Trademark) L and others may be supplied.

[0049] Figure 1 illustrates an exemplary embodiment of the process for producing glove material, as specified herein. The process disclosed in includes coating gloves with an aqueous hydrogel blend. A diagram is shown. In step 1, a mold or glove mold is prepared. The mold is like a hand. It has a specific shape, and the mold is immersed in a latex polymer with the fingers facing downwards. Before use, the glove mold can be cleaned by washing and scrubbing the mold.

[0050] Once the mold is prepared and cleaned, the glove mold is used as shown in step 2. Before immersing in the latex dispersion used to form the structure, it is immersed in a coagulant. The glove mold can be further prepared by coating it. Then, step 3 The mold is then dried in a furnace at a temperature of approximately 55°C to 60°C for about 5 minutes.

[0051] After the mold is prepared, the mold is then used to form a specific glove, as shown in step 4. It can be immersed in an elastomer latex dispersion used for that purpose. The mold is removed from the latex after a predetermined time has elapsed, and one of the latex dispersions is removed. The part forms a layer on the mold. The elastomer gloves disclosed herein are said to be made of the same material. It can be manufactured using any conventional manufacturing method known in the field of technology. (Figure 1) In the application, the gloves are shown as being formed through a coagulant immersion process. In one embodiment of the coagulant immersion process, the mold is immersed in a coagulant and then the latex It is immersed in a dispersion and then cured to form the final article. Alternatively, an appropriate optional Other processes may be used. These methods involve the elastomer from which the final article is formed. The contained dispersion is used. Preferred elastomers include natural rubber, polyurethane, Polybutadiene, polychloroprene (neoprene), nitrile rubber, styrene and butadiene Block copolymers of styrene and isoprene, block copolymers of polyiso Plen is one example. In certain embodiments, the elastomer may be natural rubber. According to the source, the elastomer may be synthetic rubber, specifically synthetic polyisoprene.

[0052] After immersing the glove mold in the latex dispersion, the coated mold is left at ambient temperature. It can be dried for about 3 minutes (step 5), followed by the beading process (step 6), and the beading The process of forming a band around the wrist involves wrapping a latex film. Yes. The pre-curing leaching process follows the beading of the dried and dipped gloves. As indicated in section 7, additionally, the leaching temperature is approximately 65°C to approximately 80°C, and leaching The duration is approximately 240 seconds.

[0053] In step 8, the glove still formed on the glove mold is a water-based hydrogel blend. The gloves are immersed in a solution that forms a coating on the outer surface, after which they are removed from the mold. When dry, it becomes the inner surface that comes into contact with the skin. The coating composition is approximately 3.5% to 4%. It has a total solids content of 8%. The temperature of the coating composition during the immersion process is approximately 25°C to approximately 35°C. Maintained at °C, the immersion time of the formed gloves in the coating composition is approximately 12 seconds. The formed gloves remained moist when immersed in the hydrogel blend coating composition. Or it may be partially dry. Therefore, the gloves should be worn before immersing them in the coating solution. It does not need to be completely dry. In particular, anything missing from the flowchart in Figure 1 , a chemical priming step before immersing the formed gloves in the hydrogel blend composition This is because such a process is unnecessary. It is possible without a primer, however, An optional priming step may be added. The glove mold is first immersed in the latex dispersion. It is then immersed in a hydrogel blend coating without a primer step, here The process used involves preparing latex for coating, these No additional steps are needed in between, and double immersion is essentially the first latex if necessary. The two dips can be performed alternately with a short pause between them to allow the layers to dry, so " This process can be called a "double immersion" process. The coating (after contact with skin) The inner surface (which will be formed on the outer surface of the glove) is formed and cured (step 9). In step 9, the gloves are vulcanized at approximately 135°C for approximately 20 minutes. In step 10, calcium carbonate is... It is applied to the formed gloves. Calcium carbonate is just a light powder and is used in the final rinse. Alternatively, before the chlorination process, it helps prevent the gloves from sticking together, and then the powder can be washed off. To be swept away.

[0054] In step 11, the gloves are then removed. Once the gloves are removed from the mold, they are turned inside out. As a result, the coated surface of the glove becomes the inner surface of the glove. Then, the gloves are removed inside out. This means that the coated part of the gloves is used. It allows contact with the person's skin.

[0055] After the gloves are removed, a chlorination step may be provided. The gloves in Figure 1 are chlorinated after formation. First, the coated gloves were placed in the chlorinator, and the gloves were pre-rinsed twice. It was washed. Then, an aqueous chlorine solution of approximately 95 ppm chlorine was added to the chlorine generator. The bags were mixed in a chlorinator for about 20 minutes. The chlorinated solution was then treated with approximately 50% hydroxide It was neutralized with a sodium solution for about 4 minutes. The gloves were removed 5 times during the total elapsed time of about 15 minutes. They were rinsed. The gloves were then transferred to an extractor to extract excess water from them, and then Then, to dry at approximately 70°C for about 20 minutes, it is placed in a cyclone dryer, followed by approximately 2 It was cooled by blowing ambient air for several minutes.

[0056] Next, the dried gloves are used for application in the lubrication process, using a lubricating device (e.g., a mixing and washing machine). It was placed in a purifier. The aqueous lubricating solution contained approximately 0.1090% by weight of cetylpyridinium chloride. (CPC), 0.08 wt% silicone emulsion, 0.014 wt% defoaming agent, It consists of 0.48% by weight of an ammonium salt of alkyl phosphate. The gloves are lubricated. The mixture was mixed in the apparatus, sprayed with approximately 15 liters of lubricating solution, and the gloves were mixed for approximately 19 minutes. Next, the gloves are removed from the lubrication device and subjected to a heating cycle at approximately 70°C for approximately 28 minutes. It was then dried in a cyclone dryer using a cooling cycle of approximately 2 minutes.

[0057] In this embodiment, gloves are described, but they are subjected to a hydrogel blend coating. Any suitable article can be used instead of gloves. In one embodiment, elastomer - The items include finger cots, catheters, condoms, probe covers, and other appropriate gills. It may include stomatal articles.

[0058] Figure 5 illustrates another exemplary embodiment of the process for manufacturing glove material. The details include a step of coating gloves with an aqueous hydrogel blend. A different flowchart is shown. In step 1, the mold or glove mold is, for example, cleaned. It is prepared by, for example, passing the mold through a brush. The mold can be cleaned by using a rotating brush to purify it. Additionally, it can pass through a water tank for further cleaning.

[0059] Once the mold is prepared and cleaned, the glove mold is used as shown in step 2. Before immersing in the latex dispersion used to form the structure, it is immersed in a coagulant. The glove mold can be further prepared by coating it. Then, step 3 The mold is then dried in a furnace at a temperature of approximately 100°C for about 20 seconds.

[0060] After the mold is prepared, the mold is then used to form a specific glove, as shown in step 4. It can be immersed in an elastomer latex dispersion used for that purpose. The mold is removed from the latex after a predetermined time has elapsed, and one of the latex dispersions is removed. The part forms a layer on the mold. The elastomer gloves disclosed herein are said to be made of the same material. It can be manufactured using any conventional manufacturing method known in the field. (Figure 5) In the application, the gloves are shown as being formed by immersion in a coagulant. In one embodiment of the pickling process, the mold is immersed in a coagulant and then in a latex dispersion. It is immersed in and then cured to form the final article. Any suitable process is used. It is possible. Preferred elastomers include natural rubber, as well as polyurethane and polybutadiene. En, polychloroprene (neoprene), nitrile rubber, styrene and butadiene blot Contains goucopolymer, styrene-isoprene block copolymer, and polyisoprene. Examples include synthetic rubber. In certain embodiments, the elastomer may be natural rubber. In some embodiments, the elastomer may be synthetic rubber, specifically polyisoprene.

[0061] After immersing the glove mold in a latex dispersion, the coated mold is heated to approximately 40°C. The material can be dried in a furnace for 20 seconds (step 5), and the beading process (step 6) follows. The pre-curing leaching process is followed by the beading of the dried and dipped gloves. As stated in 7, additionally, the leaching temperature is approximately 65°C to approximately 80°C, and leaching The duration is approximately 60 seconds.

[0062] In step 8, the glove still formed on the glove mold is a water-based hydrogel blend. The gloves are immersed in a solution that forms a coating on the outer surface, after which they are removed from the mold. When dry, it becomes the inner surface that comes into contact with the skin. The coating composition is approximately 3.5% to 4%. It has a total solids content of 8%. The temperature of the coating composition during the immersion process is approximately 25°C to approximately 35°C. The temperature is maintained at °C, and the immersion time in the composition is approximately 12 seconds. The formed gloves are hydrogel. When immersed in the Lublend coating composition, it may still be damp or partially dry. Therefore, the gloves must be completely dry before being immersed in the coating composition. There is no such thing. As shown in the process flow in Figure 1, there is no such thing as in the flowchart in Figure 5. The chemical undercoat is applied before immersing the formed gloves in the hydrogel blend composition. This is a coating process, because such a process is unnecessary. The process in Figure 5 Similarly, the "lean double immersion" process is used. The coating (after contact with skin) It is formed on the outer surface of the glove (which will become the inner surface) and cured (step 9), and in step 10, Post-curing leaching and rinsing follow. During the curing process in step 9, the gloves are exposed to temperatures of approximately 105°C. It passes through a series of curing furnaces with temperatures in the range of approximately 120°C. The curing time is approximately 12 minutes. ru.

[0063] In step 11, the coated gloves, still on the mold, are immersed in the slurry. In one embodiment, the slurry may contain a mixture of a biocide and calcium carbonate. Next, the final drying process is performed in step 12, and the coated gloves are dried for approximately 5 minutes. It is dried at 0°C for approximately 20 seconds.

[0064] After the final drying process, the coated gloves are removed from the glove mold in step 13. When the glove is removed from the mold, it turns inside out, resulting in the coating of the glove being exposed. The surface then becomes the inner surface of the glove. For example, the glove is removed inside out. This allows the coated portion of the glove to come into contact with the user's skin. The removed gloves can be dried again in a tumble dryer at a temperature of approximately 60°C for about 12 minutes. Then, a cooling process of approximately 8 minutes follows. After the gloves are removed, a process similar to that described in Figure 1 above is performed. A chlorination process is provided.

[0065] Another exemplary embodiment is a coating that leaves a tactile feel on the article being coated. By providing a coating or surface, hydrogel blend coating for elastomer articles A coating can be used. Furthermore, articles coated with a hydrogel blend, For example, with gloves, the wearing characteristics may be compromised based on the requirements or preferences of the intended use. Without that, we can provide gloves with a special grip.

[0066] In one exemplary embodiment, the hydrogel blend coating is made of natural rubber latex. It can be applied to products, such as gloves. In this embodiment, the hydrogel blend is It may contain a blend of natural rubber and nitrile, which is added to the hydrogel. The gloves formed using this method are either made from a smooth glove mold or a glove mold that retains a tactile feel. It can be formed by... When the glove is formed using a glove mold that retains its texture, The inner surface of the bag, for example, the surface that has a texture or protrusions on a glove and comes into contact with the mold. Provided. The surface that comes into contact with this mold will later be turned inside out when the glove is removed from the mold. , which becomes the outer surface of the glove. Therefore, it has a reinforced gripping surface, for example, a high-friction grip. The outer surface of the glove is provided. The glove may or may not contain a pigment, and colored gloves, for example We can provide brown gloves, or white or beige gloves. Furthermore, gloves can have an array of possible thicknesses suitable for their use. For example, The gloves can be supplied in micro-thicknesses, for example, approximately 0.15 mm to approximately 0. It can be in the range of 18 mm. In another example, gloves can be supplied in standard thickness. In one example, the size may be approximately 0.20 mm to approximately 0.26 mm. In yet another example... The gloves will be offered in a thicker configuration, for example, approximately 0.30 mm to 0.37 mm. It is possible.

[0067] In yet another exemplary embodiment, the hydrogel blend coating is used for synthetic rubber gloves. It can be applied to. In one example, it is a polyisoprene glove. And, the hydrogel blend is a hydrogel and at least a polyisoprene material, The coating composition contains nitrile blended with hydrogel. Similar to the natural rubber gloves mentioned above, polyisoprene gloves have a smooth glove mold or a tactile feel. It can be formed using any of the glove molds, and the gloves may or may not contain pigment. We provide colored gloves, such as brown gloves, or white or beige gloves. Furthermore, polyisoprene gloves can be supplied in any thickness suitable for use. Gloves can be supplied in micro-thicknesses, for example, from approximately 0.15 mm to approximately 0.1 It can be in the range of 8 mm. In another example, gloves can be supplied in a standard thickness, In the example, the size may be approximately 0.20 mm to approximately 0.26 mm. In yet another example, Gloves can be offered in thicker configurations, for example, approximately 0.30 mm to 0.37 mm. can.

[0068] In the above embodiment, a glove with enhanced gripping properties and a tactile feel obtains enhanced gripping. If requested, gloves may need to be chlorinated with chlorine-free or low-chlorine solutions. Low levels of chlorine help maintain and enhance the grip of the final glove product. If untreated gloves are used, the process involves chlorinating the gloves with a low effective chlorine concentration. This does not provide sufficient wearability because the surface of wear (i.e., the glove in contact with the skin) This is because the surface is not treated with a sufficient effective chlorine concentration. In contrast, hydrogelbrane Gloves treated with a coating can be worn even with very low or no chlorine levels. It can provide improved lubrication. Therefore, coated gloves This provides flexibility in chlorinating gloves at low effective chlorine concentrations, and allows for the desired grip on the outer surface of the gloves. Sexuality remains.

[0069] The following non-limiting examples illustrate the coating compositions and coatings disclosed herein. Specific embodiments of the process for coating are described. The examples describe the coating composition This does not mean a comprehensive overview of the entire range of processes for coating. . [Examples]

[0070] Example 1 Table 1 below provides a hydrogel blend coating formulation. Specifically, In the hydrogel blend, we provide approximately 75% hydrogel by weight and approximately 18% natural rubber. Supplied at 0.6 wt%, with nitrile latex supplied at approximately 6.2 wt%. Additional surfactant This also includes agents and biocides. For additional elastomer materials in the coating composition, A surfactant is added. The surfactant is blended with natural rubber and nitrile in solution. It can be helpful in stabilizing two elastomers in solution. For comparison, a solution containing only hydrogel is also provided. The hydrogel-only solution contains no surfactants. It was prepared because the solution contains any additional elastomer material that needs to be stabilized. This is because it does not contain either. Furthermore, hydrogel-only coating is not permitted under ASTM Standard 35 To avoid failing to meet the powder content specifications of 77, a large amount of lubricant is supported after coating. This is not possible. This is shown in more detail in Example 8. [Table 1]

[0071] Hydrogel blend coating compositions are used in the following tests unless otherwise specified. It has a total solids content ranging from approximately 3.5% to approximately 4.7%. Typically, it has a total solids content of approximately 4%. This is the standard. Unless otherwise specified in the tests below, compositions consisting solely of hydrogels are approximately 3%. This is the total solid content.

[0072] Example 2 The coating formulation prepared in Example 1 was subjected to three different total solid content levels: 3%, 3.5%, The mixtures were adjusted to 4% and tested for coating adhesion to natural rubber substrates. Natural rubber gloves were formed using a process similar to that shown in Figure 1. Then, A natural rubber glove is immersed in three different total solids prepared with respect to composition A, and another glove is then used. Composition B was immersed in three different total solids prepared with respect to composition B.

[0073] To test the degree of adhesion of the coating to the substrate, the coating was tested on a glove. After hardening, the finger and arm portions of the glove are stretched and pulled, and then statically Perform a stretch test by stretching the glove from the stopping position to the 100% stretched position, and then back to the resting position. And it was released. Once the coated glove is stretched, the tester uses its fingers to... Rub the coating on the glove to see if the coating comes off. The measurement is performed according to a standard of 3, where 1 means no peeling and 3 means a high degree of peeling.

[0074] Furthermore, SEM (scanning electron microscope) scan images were taken of each sample to analyze the coating after stretching. This shows the surface morphology of the coated glove. The glove sample was prepared according to ASTM D412. Cut into appropriate dimensions and shapes using punching, and used for testing in SEM scan images. Prepare the piece. One method for cutting a glove sample as adopted in the ASTM test specifications. This is a dumbbell test specimen. Next, using a tension meter, the specimen is subjected to a test until it reaches 500% of its original length. Stretch the glove specimen, and hold it for approximately one minute before returning it to its original position.

[0075] The coating adhesion test showed that the hydrogel polymer blend performed better than the hydrogel-only coating. Compared to conventional coatings, it has improved coating adhesion, and is a hydrogel blend coating. The glove showed no peeling after stretching. In contrast, only the hydrogel... The coated gloves showed a high degree of coating peeling in the final glove product. The results of the adhesion test are shown in Table 2 below. Therefore, composition A is a hydrogel-only coating. Composition B is a coating composition, and composition B is a hydrogel blend coating composition. [Table 2]

[0076] After stretching the gloves and observing the peeling, the gloves coated with composition A, and A glove coated with composition B is scanned under a scanning electron microscope (SEM) and stretched. The effects and peeling on the gloves were observed. Figures 2A and 2B show these coatings. Figure 2A shows SEM scan image data of the stretched glove at 100x magnification. Later, gloves coated with composition A (i.e., a hydrogel-only coating) This indicates that the coating peels off after the coated glove is stretched. You can see that there are several exposed, uncoated areas. In contrast, see Figure 2. In B, the stretched composition B (i.e., hydrogel blend coating) Figure 2 shows a glove coated with [the specified material]. Figure 2 shows a homogeneous, fully coated surface morphology. This demonstrates that no peeling of the coating was observed on gloves coated with composition B. Therefore, in Figure 2B, there are no exposed, uncoated surfaces of the glove.

[0077] Example 3 Using coating compositions having different amounts of elastomer material added to the hydrogel Using this method, a series of coating adhesion tests were performed. Table 3 below shows the different tests performed. This indicates the amount of the constituent elements used in the composition. [Table 3]

[0078] Similar to Example 2, natural rubber gloves were formed and immersed in the respective coating compositions. Once the coating on the glove has hardened, as described in Example 2... A stretch test was performed to measure the degree of coating adhesion. The results of the stretch test are shown in the table below. This is shown in 4. [Table 4]

[0079] The stretch test results showed that even with equal amounts of natural rubber and nitrile latex, the coating was different. Furthermore, it demonstrates excellent adhesion to gloves. Similarly, it exhibits the same properties to natural rubber latex. With a coating that has a higher nitrile latex content, the coating adhesion is It is excellent. This means that nitrile latex is present in larger quantities, or The presence of more natural rubber latex affects the adhesion of the coating to the glove product. This indicates that it does not affect the performance and properties of the material. Therefore, the elastomer material is They can exist in any ratio. Specifically, the base material of the gloves is natural rubber latex material. Furthermore, natural rubber in the hydrogel blend is present in large quantities in the coating composition. Whether it exists in small quantities or not is irrelevant.

[0080] In contrast, a hydrogel-only coating consists of approximately 90% hydrogel and only 10% Hydrogel blend coating with natural rubber and nitrile-containing elastomer blend Similar to the coating, it exhibited a high degree of delamination. Similarly, with only one elastomer material, approximately 7 Compositions F and G, which contain 5% hydrogel, contain 3%, 3.5%, and 4% total solids. The shape indicated a high degree of delamination.

[0081] The total solid content did not appear to affect the results of the hydrogel blend coating. However, the stretch test was performed with a higher solid content of approximately 4%, and with only hydrogel coating. Composition B exhibited a high degree of peeling and did not adhere well to gloves. In contrast, composition B (From Example 2) The hydrogel blends of composition D and composition E have a high solids content of 4%. Even that exhibited excellent adhesion.

[0082] Using solution D with a total solid content of approximately 4.7%, an additional stretching test was performed, and the same amount of nitrile was used. and natural rubber, as well as a higher solids content level with approximately 75% hydrogel, 1 As a result, or without peeling of the coating, approximately 75% hydrogel was obtained. The hydrogel blend having the remainder of the composition which is an elastomer blend, Regardless of the amount of each individual elastomer material in the blend, it provides excellent adhesion properties to gloves. When the glove was stretched, no peeling was observed at all three solids content levels tested. It was not possible. Therefore, the glove article was made with a hydrogel blend composition with a high solids content. It can provide a coating that does not peel off and offers excellent coating adhesion to rubber substrates. Showing adhesion,

[0083] Example 4 Table 5 below provides a hydrogel blend coating formulation. Specifically, In the hydrogel blend, the hydrogel is provided at approximately 85% by weight, and the synthetic polyisopreservative is used. The compound is provided in approximately 7.5% by weight, and the nitrile latex is provided in approximately 7.5% by weight. Includes additional surfactants and biocides. Additional elastomer materials in the coating composition. For the material, a surfactant is added. The surfactant can serve to blend the synthetic polyisoprene compound and nitrile together in solution and is effectively useful for stabilizing the two elastomers in solution. By comparison, a solution of only the hydrogel is also provided. The solution of only the hydrogel was prepared without a surfactant. This is because the solution does not contain any additional elastomeric material that needs to be stabilized. Further, the coating of only the hydrogel cannot support a large amount of lubricant after coating because it does not meet the powder content specification requirements according to ASTM standard 3577. This is shown in more detail in Example X.

Table 5

[0084] The hydrogel blend coating composition has a total solids content in the range of about 3.5% to about 4.5% unless otherwise specified in the following tests. Typically, a total solids content of about 4% is targeted. The composition of only the hydrogel is about 3% total solids unless otherwise specified in the following tests.

[0085] Example 5 The coating formulation adjusted in Example 4 was adjusted to three different total solids, 3%, 3.5%, 4% respectively, and tested for coating adhesion to a synthetic polyisoprene substrate. Using a process similar to that shown in Figure 1, synthetic polyisoprene gloves were formed. Then, the synthetic polyisoprene gloves were immersed in three different total solids prepared for Composition A, and another glove was immersed in three different total solids prepared for Composition H.

[0086] To test the degree of adhesion of the coating to the substrate, the coating was tested on a glove. After hardening, the finger and arm portions of the glove are stretched and pulled, and then statically Perform a stretch test by stretching the glove from the stopping position to the 100% stretched position, and then back to the resting position. And it was released. Once the coated glove is stretched, the tester uses its fingers to... Rub the coating on the glove to see if the coating comes off. The measurement is performed according to a standard of 3, where 1 means no peeling and 3 means a high degree of peeling.

[0087] Furthermore, SEM (scanning electron microscope) scan images were taken of each sample to analyze the coating after stretching. This shows the surface morphology of the coated glove. The glove sample was prepared according to ASTM D412. Cut into appropriate dimensions and shapes using punching, and used for testing in SEM scan images. Prepare the piece. One method for cutting a glove sample as adopted in the ASTM test specifications. This is a dumbbell test specimen. Next, using a tension meter, the specimen is subjected to a test until it reaches 500% of its original length. Stretch the glove specimen, and hold it for approximately one minute before returning it to its original position.

[0088] The coating adhesion test showed that the hydrogel polymer blend performed better than the hydrogel-only coating. Compared to conventional coatings, it has improved coating adhesion, and is a hydrogel blend coating. The glove showed no peeling after stretching. In contrast, only the hydrogel... The coated gloves showed a high degree of coating peeling in the final glove product. The results of the adhesion test are shown in Table 6 below. Therefore, composition A is a hydrogel-only coating. Composition H is a hydrogel blend coating composition. [Table 6]

[0089] After stretching the gloves and observing the peeling, the gloves coated with composition A, and A glove coated with composition H is scanned under a scanning electron microscope (SEM) and stretched. The effects and peeling on the gloves were observed. Figures 6A and 6B show these coatings. Figure 6B shows SEM scan image data of the stretched glove at 100x magnification. Later, gloves coated with composition A (i.e., a hydrogel-only coating) This indicates that the coating peels off after the coated glove is stretched. You can see that there are several exposed, uncoated areas. In contrast, see Figure 6. In A, the composition H (i.e., hydrogel blend coating) after stretching. Figure 2 shows a glove coated with [the specified material]. Figure 2 shows a homogeneous, fully coated surface morphology. This demonstrates that no peeling of the coating was observed on gloves coated with composition H. Therefore, in Figure 6A, there are no exposed, uncoated surfaces of the glove.

[0090] Example 6 Using coating compositions having different amounts of elastomer material added to the hydrogel Using this method, a series of coating adhesion tests were performed. Table 7 below shows the different tests performed. This indicates the amount of the constituent elements used in the composition. [Table 7]

[0091] Similar to Example 5, synthetic polyisoprene gloves were formed, and each coating composition was formed. It was immersed therein. Once the coating on the glove was cured, a stretch test was performed as described in Example 5 to measure the degree of coating adhesion. The results of the stretch test are shown in Table 8 below. As described in the following.

Table 8

[0092] The results of the stretch test indicate that the coating still exhibits excellent adhesion to the glove even when the amounts of synthetic polyisoprene and nitrile latex are not the same. Similarly, for coatings with a higher nitrile latex content relative to synthetic rubber latex, the coating adhesion is still excellent. This shows that whether a larger amount of nitrile latex is present or a larger amount of synthetic rubber latex is present does not affect the adhesion performance and characteristics of the coating to the glove product. Therefore, the elastomer materials can be present in any ratio. Specifically, the base material of the glove is a synthetic rubber latex material, and whether the synthetic rubber in the hydrogel blend is present in a large amount or a small amount in the coating composition is not a problem.

[0093] In contrast, a coating of only hydrogel had a high degree of peeling, similar to a hydrogel blend coating having an elastomer blend containing approximately 92% hydrogel and only 8% synthetic rubber and nitrile. Similarly, a composition containing only one elastomer material and approximately 85% hydrogel showed a high degree of peeling.

[0094] The total solids did not seem to affect the results of the hydrogel blend coating. However, the stretch test was performed with a higher solid content of approximately 4%, and with only hydrogel coating. Composition H exhibited a high degree of peeling and did not adhere well to gloves. In contrast, composition H (From Example 5) The hydroxy blends of composition J and composition K have a high solids content of 4%. Even that exhibited excellent adhesion.

[0095] Example 7 A mechanical stability test (MST) is performed to determine the mechanical stability of the coating composition. MST is a measure of the ability of a coating composition to withstand high-speed stirring without solidification. This is because the coating composition, which was first filtered through a 180 μm sieve, is then subjected to high speed It is determined by the operation of the agitator. Approximately 50 grams of filtered solution are weighed, Place the contents into the test bottle. Place the bottle on the test apparatus and stir at approximately 14,000 ± 200 rpm for 30 minutes. Mix. Ensure that the temperature of the coating composition does not exceed approximately 60°C at any point during the test. Next, measure the temperature and record it every 10 minutes. Then, the stirred coating composition is 18 It is filtered through a 0 μm filter, and then the aggregate obtained on the filter is placed in a furnace for approximately The mixture was dried at 100°C until the weight of the solidified mass was constant. Then, it was placed on the filter after filtration. The percentage of remaining lumps was recorded. The higher the percentage of lumps remaining on the filter, the better. This indicates that the stability of the coating composition is insufficient.

[0096] Seven different coating formulations were tested. Composition A and composition prepared in Example 1 Substance B, compositions F and G shown in Example 3, composition H prepared in Example 4, and Example Compositions L and M shown in 6. The coating was prepared with a total solids content of 5%. The ing composition is subjected to a heating process at 40°C using continuous stirring for a total of 3 days. The MST was performed during the evaluation test, with measurements taken over 1, 2, and 3 days. The results were recorded. The results are shown in Tables 9 and 10 below. [Table 9] [Table 10]

[0097] Based on the results obtained, the hydrogel-only coating composition (Composition A) is hydro From the Rogel Blend coating compositions (compositions B and H), thermal and mechanical stability It can be seen that the amount is much lower. Co-op containing only one elastomer material in the blend The ting compositions (F, G, L, and M) also showed insufficient stability. Therefore A hydrogel blend composition having two different elastomer materials has a high solids content of 5%. The solution exhibited good thermal and mechanical stability.

[0098] The mechanical stability tests described in the previous examples were also performed on compositions to which stabilizers had been added. did. [Table 11]

[0099] These compositions were tested using the MTS test. [Table 12]

[0100] The addition of Igepal CO630 and Darvan WAQ is only available in Nobel. It did not improve the coating stability of the coating (composition A). However, it did not improve the same stability. The addition of the agent dramatically increased the stability of composition B after 3 days, bringing it down to a low value of 0.0094.

[0101] Example 8 Coating samples of compositions A and B are coated as shown in Table 13 below. Each was treated with a lubricating solution on a natural rubber article. Each glove was first treated with 9 Chlorine with 5 ppm chlorine, then use the lubricant solution shown in Table 13 via a spraying process. The lubricant solution was lubricated by application. The majority of the lubricant solution contained water, and Darvan (registered trademark) L is the next largest amount of water, and Darvan® L is Vanderbilt Che Interfaces containing ammonium salts of alkyl phosphates, available from micals, LLC. It is a trademark name for an activator. Furthermore, it is used for lubricants such as CPC (cetylpyridinium chloride) and antifoaming agents, for example. For example, ANTI is manufactured by Dow Corning Corporation. FOAM 1920 and silicone emulsions, such as Momentive Silicone manufactured by Performance Materials Add SM2140 or similar. [Table 13]

[0102] To measure the receptivity of gloves sprayed with an additional lubricant, the powder content of the gloves was measured. For gloves to be receptive, the powder content must be low, less than approximately 2 mg / glove. The powder content of the gloves is measured, and if a chlorination process is used, then, or at the final stage... Determine the amount of powder or fine particles remaining on the glove after the processing step. ASTM 3577 According to the requirements, powder-free gloves are those containing less than 2 mg of powder per glove. This is to test the powder content of coated and sprayed gloves. Place the glove in a beaker of water, shake the beaker to filter the water, and release it from the glove. The residue powder content was measured. The final results are shown in Table 14 below. Two sample sets were used. The tests were conducted, and the results for each type of glove are shown in Table 14. Therefore, using five pieces of the glove, 1 One powder content data point was obtained for each sample set. [Table 14]

[0103] Even with the addition of lubricants, including those containing approximately 0.1% CPC, the coating is done solely with hydrogel. Furthermore, high and unacceptable levels of residual powder were observed on gloves treated with a lubricant. This can be seen from the powder content test. The hydrogel blend gloves were treated with 0.1% lubricant CPC. It can be done, and does not show a significant powder content on the glove. Therefore, hydrogelbrane Gloves coated with a hydrogel composition are coated with hydrogel only. Compared to conventional gloves, these can be treated with a higher level of CPC lubricant.

[0104] Example 9 The following ASTM D1894 wet friction coefficient (COF) test was performed to determine the wearability of the gloves. In this test method, the force required to move one surface on another surface and The coefficient of friction was defined as the ratio of the sum of the forces applied perpendicularly to these surfaces. The lower the value, the lower the friction between the two surfaces. Therefore, a lower COF value indicates better wearability. show.

[0105] The ASTM D1894 test method specifically concerns wet COF, and involves wet conditions under which it is used. Determination of the coefficient of starting and sliding friction of a glove film when sliding it over a body or other metal plate. This procedure includes a movable (wrapped in glove film) having a fixed plane. You can use Red.

[0106] Thread (metal block, 63.5mm (2.5 inches) square, approximately 6mm (0.25) (Inch) Thickness, with the appropriate eye screw tightened at one end, flat A flat, defect-free square film (glove) test piece was measured on each side, approximately 120 mm (4 1 / 2 inches). Cut into pieces. The standard conditioning cycle for the test specimen is 23±2℃ (73.4± This is 24 hours under standard laboratory conditions of 3.6°F and 50±5% relative humidity. If temperature and humidity conditions are not met, the sample should be kept in the same room as the tester for at least 24 hours. Conditioning. Test apparatus in accordance with Figure 1(c) of ASTM D1894. Assemble the device and calibrate the force measuring device according to the manufacturer's instructions. Then, the glove sample is used for testing. Place it on a smooth, clean surface, and position the thread approximately in the center of the sample. The edge of the film... Fold it over the top of the red and secure it with adhesive tape, then attach it to the film at the bottom of the thread. Ensure there is no stretching or wrinkling. Test flat surface (polished metallic sheet, approximately 150 × Clean the 300 x 1 mm object using isopropyl alcohol or another suitable cleaning agent. For wet testing, water is sprayed onto a flat surface. The thread with the sample attached is then subjected to the test procedure. Attach it to the cable used to pull the thread. Then, the thread is placed horizontally. Place it in the appropriate position above. Thread positioning depends on the length of the thread and the length of the adjacent cables. And ensure that the longitudinal direction of the plane is parallel. At a constant speed of 150+ / - mm / min Pulling, using a power source, starts the drive mechanism. The result of the frictional force between contacting surfaces and Then, until the tensile force on the thread is equal to or exceeds the static friction force acting on the contact surface, No immediate relative motion occurs between Red and the movable plane. Initially, the maximum reading is This is the force component of the static friction coefficient. During the measurement over approximately 130 mm (5 inches), the surfaces remained constant on each other. While sliding, any average visual readings should also be recorded. This is because the surface This corresponds to the dynamic force necessary to sustain the movement, and is generally necessary to initiate movement. Lower than the required static force. The device stops after the thread has moved 130 mm (5 inches). The coefficient of kinetic friction is given by the formula μk = Ak / B, (where Ak = obtained during a constant sliding of the film). The calculation is performed using the average scale reading (grams) and B (thread weight, grams).

[0107] A blend of 75% hydrogel, 19% natural rubber, and 6% nitrile, in three different forms. Five samples were tested using different TSCs. The averages are shown in Table 15, and the actual data are shown in Table 16. vinegar. [Table 15] [Table 16]

[0108] The wet COF test indicates that the higher the level of coating, the lower the wet COF, or the wearability. To manufacture gloves with increased coating capacity. Therefore, peeling does not occur, and more coating is applied. The hydrogel blend's ability to enhance wearability results in increased comfort.

[0109] Example 10 The coated gloves were evaluated via a scanning electron microscope (SEM) to determine the formation and The surface morphology of the coated gloves after curing was shown. Four samples were combined from the previous example. Composition A, Composition B, Composition F, and Composition G were prepared and tested to form natural rubber gloves. Then, they were coated. Each glove was coated with one of the four different solutions. The coated gloves were then examined under a microscope, and SE was detected at 100x magnification. M-scan images were taken. These results are shown in Figures 3A to 3D.

[0110] In Figure 3A, a glove is coated with only hydrogel (i.e., composition A). The segment displayed through the scanned image is a coated surface. The gaps or spaces between these segments leave uncoated surface areas of the glove. Compare this to Figure 3B, which represents the hydrogel blend coating (i.e., composition B). In the scanned image of Figure 3A, there is significantly more space or coating than in Figure 3B. It can be seen that there are surfaces that have not been cleaned. In Figure 3B, more of the scanned images can be seen. There are continuous patches of coating segments, which makes for more continuous coating on gloves. It represents a pattern.

[0111] Figures 3C and 3D show that these contain one elastomer-hydrogel blend. This shows scanned images of gloves. In Figure 3C, only hydrogel and natural rubber (that is, The image shows a scanned image of a glove coated with composition F). From this scanned image, the coating It can be seen that there is almost no coated surface. In Figure 3D, the hydrogel and nitrile Scanning images of a glove coated with only Lil (i.e., composition G) are shown. Glove surface Most of it is coated, but compared to hydrogel blends it is somewhat flatter. Yes, and is noticeable in blends of at least two elastomer materials that help improve wearability. It can be seen that there are no minute elevations. The SEM scanning image shows a hydrogel blend coating. The scanned image of Figure 3B containing [the substance] is different from any of the other three coating compositions tested. It has a unique surface morphology that creates gloves that are coated over a larger surface area. Furthermore, it is shown to have a unique surface morphology with surface ridges. Specifically, hydrogelbreech This continuous coating, which has a smooth inner surface, helps to make the gloves easier to put on. Creates resistance.

[0112] Example 11 Using SEM scanning images, the surface morphology of coated synthetic polyisoprene gloves was examined. The experiment was conducted using a similar coagulant immersion process for natural rubber gloves, as shown in Figure 1. Then, polyisoprene gloves were made. The gloves were then immersed in polyisoprene latex. Then, it is immersed in the coating composition and cured. Test on polyisoprene gloves. Among the three coating compositions tested were: a hydrogel-only composition and two compositions Hydrogel-polyisoprene-nitrile blend. Approximately 75% hydrogel and approximately 6% Use the polyisoprene and the remainder of the solution containing approximately 19% nitrile latex. Then, the first hydrogel-polyisoprene-nitrile blend was prepared. Approximately 85% Drogel, and approximately 7.5% polyisoprene, and approximately 7.5% nitrile latex Using the remaining portion of the solution containing the second hydrogel-polyisoprene-nitrile blotter, A glove was fabricated. After coating and curing the glove, the glove was scanned under SEM to reveal the surface. Determine the surface morphology, and in Figures 4A-4B, 6A-6B, 7A-7B, and 8A-8B, You can see the results.

[0113] Polyiso coated with a first hydrogel-polyisoprene-nitrile blend Polyisoprene gloves were evaluated at a magnification of 100x (Figure 4A). The results showed that hydrochloric acid on the polyisoprene surface was... The gel blend has a unique surface morphology with micro-ridges that cover a large surface area of ​​the glove. This shows that it similarly possesses the same properties. In contrast, polyiso coated only with hydrogel Plain gloves exhibit a flat surface on the glove. Poly coated only with hydrogel. Soprene gloves were also evaluated at a magnification of 100x (Figure 4B). In Figure 4B, the surface of the gloves... This not only shows a flatter surface than the glove in Figure 4A, but also the coating on the glove It also shows many gaps or spaces that represent surfaces that are not present.

[0114] Polyiso coated with a second hydrogel-polyisoprene hydrogel blend Plain gloves were examined at magnifications of 100x (Figure 6A), 500x (Figure 7A), and 1000x. Evaluation was performed at double the rate (Figure 8A). Polyisoprene gloves coated only with hydrogel were also evaluated. Furthermore, magnifications of 100x (Figure 6B), 500x (Figure 7B), and 1000x (Figure 8B) are shown. The results also showed that the hydrogel blend on polyisoprene was superior in terms of glove size. This demonstrates that it similarly possesses a unique surface morphology with minute ridges encompassing a surface area. In contrast, polyisoprene gloves coated only with hydrogel have a flat surface on the glove. The surface is shown. In Figures 6B, 7B, and 8B, the surface of the glove is shown in Figures 6A, 7A, and Not only does it show a flatter surface than the glove in 8A, but it also has no coating on the glove. It also shows many gaps or spaces that represent the surface.

[0115] Therefore, different elastomer articles, namely those made from polyisoprene. Even with hydrogel-only coatings, hydrogel-polyisoprene-nitrile coatings are used. It can be seen that it does not coat a surface area as large as Rend. Moreover, hydrogel- Polyisoprene-nitrile blends, and even blends of different elastomers, It exhibits a unique form of expression that facilitates the provision of improved usability.

[0116] This disclosure includes the following embodiments. [1] An elastomer article having a coating, wherein the coating is Aqueous hydrogel polymer and At least one elastomer material that is added to an aqueous hydrogel polymer to form a coating compound. and An elastomer article in which no solvents are added to the coating compound. [2] The elastomer article according to [1], wherein the coating provides improved lubricity compared to an elastomer article in which only a hydrogel polymer is coated on the surface of the elastomer article. [3] The elastomer article according to [1] or [2], wherein the elastomer material is selected from the group consisting of natural rubber latex, polyisoprene, polychloroprene, polyurethane, polybutadiene, nitrile, a block copolymer of styrene and butadiene, and a block copolymer of styrene and isoprene. [4] The elastomer article according to [3], wherein the elastomer material is natural rubber. [5] The elastomer article according to [3], wherein the elastomer material is polyisoprene. [6] An elastomer article according to any one of [1] to [5], wherein the elastomer material is a blend of at least two elastomer materials. [7] An elastomer article according to any one of claims [1] to [6], wherein at least one elastomer material in the coating formulation is the same as that of the elastomer article. [8] An elastomer article according to any one of items [1] to [7], wherein an aqueous hydrogel is present in the coating formulation in an amount of approximately 50% to approximately 90% by weight. [9] An elastomer article according to any one of [1] to [8], wherein the coating compound further comprises a surfactant.

[10] An elastomer article according to any one of items [1] to [9], wherein the coating formulation further comprises a biocide.

[11] An elastomer article according to any one of [1] to

[10] , wherein the hydrogel is present in an amount of about 75% by weight of the coating formulation.

[12] The elastomer article described in [8], wherein the hydrogel is present in an amount of approximately 75% to approximately 85% by weight.

[13] The elastomer article according to

[12] , wherein the hydrogel is present in an amount of approximately 85% by weight.

[14] An elastomer article according to any one of the claims [1] to

[13] , wherein at least one elastomer material is present in a coating formulation ranging from about 0.5% to about 37% by weight.

[15] The elastomer article according to [6], wherein the second elastomer material is present in the coating compound in an amount ranging from approximately 0.5% by weight to approximately 25% by weight.

[16] The elastomer article according to

[14] , wherein at least one elastomer material is present in an amount ranging from about 6% to about 19% by weight of the coating compound.

[17] The elastomer article according to

[15] , wherein the second elastomer material is present in an amount ranging from approximately 6% to approximately 19% by weight of the coating compound.

[18] An elastomer article according to any one of the claims [1] to

[17] , wherein at least one elastomer material is present in about 19% by weight of the coating formulation.

[19] The elastomer article according to

[17] , wherein the second elastomer material is present in an amount of about 6% by weight of the coating compound.

[20] An elastomer article according to any one of the items [1] to

[19] , wherein at least one elastomer material is natural rubber.

[21] The elastomer article according to any one of the following paragraphs, [6],

[15] ,

[17] , and

[19] , wherein the second elastomer material is nitrile.

[22] The elastomer article according to

[12] , wherein at least one elastomer material is present in an amount ranging from about 4% to about 11% by weight of the coating compound.

[23] The elastomer article according to

[22] , wherein the second elastomer material is present in an amount ranging from approximately 4% to approximately 11% by weight of the coating compound.

[24] The elastomer article according to

[22] , wherein at least one elastomer material and a second elastomer material are each present in an amount of about 7.5% by weight of the coating compound.

[25] The elastomer article according to

[24] , wherein at least one elastomer material is polyisoprene and the second elastomer material is nitrile.

[26] An elastomer article as described in any one of items [1] to

[25] , having an average TSC of 3.5 and an average coating peel grade of approximately 1.

[27] An elastomer article according to [1], having a TSC of 7% and a wet COF of less than approximately 0.10.

[28] An elastomer article according to any one of items [1] to

[27] , having a TSC of 4% and a wet COF of less than approximately 0.10.

[29] An elastomer article according to any one of items [1] to

[28] , having less than 1 mg of powder in a residue powder content test.

[30] An elastomer article free of powder, as described in any one of items [1] to

[29] .

[31] A method for coating an elastomer article, A step of immersing an elastomer article in an aqueous coating composition to obtain a coated article, wherein the coating composition comprises an aqueous hydrogel and at least one elastomer material. The process of curing the coated article, The process of drying coated items and The elastomer article is immersed in a solvent-free coating solution. A method that eliminates the need for a chemical priming step before immersing an elastomer article in a coating composition.

[32] The method according to

[31] , wherein at least one elastomer material is the same material as that of the elastomer article.

[33] The method according to

[31] or

[32] , wherein a second elastomer material, different from at least one elastomer material, is added to the coating composition.

[34] The method according to any one of

[31] to

[33] , further comprising the step of chlorinating a coated article.

[35] The method according to any one of

[31] to

[34] , further comprising the step of spraying a lubricating solution onto a coated article.

[36] An elastomer article having a coating, wherein the coating is Aqueous hydrogel polymer and Natural rubber latex and Nitrile latex An elastomer article comprising and which are blended together to form a coating composition.

[37] The elastomer article according to

[36] , wherein the coating provides improved lubricity compared to an elastomer article in which only a hydrogel polymer is coated on the surface of the elastomer article.

[38] The elastomer article according to

[36] or

[37] , wherein an aqueous hydrogel polymer is present in about 75% by weight of the coating composition, and a combination of natural rubber latex and nitrile latex constitutes about 25% by weight of the coating composition.

[39] A method for coating an elastomer article using any one of the coatings described in

[36] to

[38] .

[40] An elastomer article having a coating, wherein the coating is Aqueous hydrogel polymer and Polyisoprene and Nitrile latex An elastomer article comprising and which are blended together to form a coating composition.

[41] The elastomer article according to

[40] , wherein the coating provides improved lubricity compared to an elastomer article in which only a hydrogel polymer is coated on the surface of the elastomer article.

[42] The elastomer article according to

[40] or

[41] , wherein an aqueous hydrogel polymer is present in about 85% by weight of the coating composition, and a combination of polyisoprene latex and nitrile latex constitutes about 15% by weight of the coating composition.

[43] A coating composition for coating elastomer articles, Aqueous hydrogel polymer and At least one elastomer material to be added to an aqueous hydrogel polymer. A coating composition comprising the above, wherein no solvent is added to the coating formulation.

[44] The coating composition according to

[43] , wherein the elastomer material is a blend of at least two elastomer materials.

[45] The coating composition according to

[43] or

[44] , wherein an aqueous hydrogel is present in the coating formulation in an amount of about 50% to about 90% by weight.

[46] A coating composition according to any one of

[43] to

[45] , wherein the coating formulation further comprises a surfactant.

[47] A coating composition according to any one of

[43] to

[46] , wherein the coating formulation further comprises a biocide.

[48] The coating composition according to

[43] , wherein the hydrogel is present in an amount of about 75% by weight of the coating formulation.

[49] The coating composition according to

[43] , wherein the hydrogel is present in an amount of approximately 75% to approximately 85% by weight.

[50] The coating composition according to

[49] , wherein at least one elastomer material is present in an amount ranging from about 0.5% to about 37% by weight of the coating formulation.

[51] The coating composition according to

[44] , wherein the second elastomer material is present in the coating formulation in an amount ranging from about 0.5% by weight to about 25% by weight.

[52] The coating composition according to

[50] , wherein at least one elastomer material is present in an amount ranging from about 6% to about 19% by weight of the coating formulation.

[53] The coating composition according to

[51] , wherein the second elastomer material is present in an amount ranging from about 6% to about 19% by weight of the coating compound.

[54] The coating composition according to

[52] , wherein at least one elastomer material is present in about 19% by weight of the coating formulation.

[55] The coating composition according to

[53] , wherein the second elastomer material is present in an amount of about 6% by weight of the coating compound.

[56] A coating composition according to any one of

[43] to

[55] , wherein at least one elastomer material is natural rubber.

[57] The coating composition according to

[44] , wherein the second elastomer material is nitrile.

[58] The coating composition according to

[43] , wherein at least one elastomer material is present in an amount ranging from about 4% to about 11% by weight of the coating formulation.

[59] The coating composition according to

[44] , wherein the second elastomer material is present in an amount ranging from about 4% to about 11% by weight of the coating compound.

[60] The coating composition according to

[58] , wherein at least one elastomer material and a second elastomer material are each present in an amount of about 7.5% by weight of the coating formulation.

[61] The coating composition according to

[44] , wherein at least one elastomer material is polyisoprene and the second elastomer material is nitrile.

[62] The coating composition according to

[43] , wherein the coating composition has less than 0.10 percent of solids after 3 days in an MST test. For the purposes of this disclosure, certain aspects, interests, and novel features are described herein. It should be understood that it is not necessarily required that all such interests be achieved by any particular embodiment. Therefore, for example, a person skilled in the art will recognize that this disclosure can be implemented, as embodied herein or in a manner that achieves one or a group of interests, without necessarily achieving other interests, as may be taught or suggested herein.

[0117] Furthermore, while exemplary embodiments are described herein, equivalent elements, modifications, and omissions may be found elsewhere. In short, combinations, adaptations and / or modifications (for example, of various embodiments) The scope of any and all embodiments having is understood by those skilled in the art based on this disclosure. It will be understood that the limitations in the claims are used in the claims. It should be widely translated based on the language, and as stated herein or in the application. The examples provided are not limited to those described herein, and should be interpreted as non-exclusive. Furthermore, The operation of the disclosed processes and methods may involve reordering and / or additional operations. It can be modified in any way, including insertions and / or deletions of actions. Therefore, this specification and examples are merely illustrative and do not include the claims and examples. It is intended to be in the true scope and spirit shown by the entire range of those equivalents.

Claims

1. A method for preparing a coating compound for an elastomer substrate, This includes forming a coating compound by combining an aqueous hydrogel polymer, a first elastomer material, and a second elastomer material. The first elastomer material and the second elastomer material are different materials. The elastomer substrate contains the same material as the first elastomer material. The aforementioned coating formulation does not contain the added solvent. The second elastomer material is nitrile latex. The aqueous hydrogel polymer is present in the coating formulation in an amount of 50% to 85% by weight. method.

2. The method according to claim 1, wherein the first elastomer material is natural rubber latex.

3. The method according to claim 1, wherein the first elastomer material is polyisoprene latex.

4. The method according to claim 1, wherein the aqueous hydrogel polymer is present in an amount of 75% to 85% by weight of the coating formulation.

5. The method according to claim 1, wherein the first elastomer material is present in an amount of 0.5% to 37% by weight of the coating compound.

6. The method according to claim 1, wherein the second elastomer material is present in an amount of 0.5% to 25% by weight of the coating compound.

7. The method according to claim 1, wherein the second elastomer material is present in an amount of 6% to 19% by weight of the coating compound.

8. The method according to claim 1, wherein the first elastomer material is present in an amount of 6% to 19% by weight of the coating compound.

9. The method according to claim 1, wherein the first elastomer material is present in an amount of 4% to 11% by weight of the coating compound.

10. The method according to claim 1, wherein the second elastomer material is present in an amount of 4% to 11% by weight of the coating compound.

11. The method according to claim 1, wherein the first elastomer material and the second elastomer material are each present in an amount of 7.5% by weight of the coating compound.

12. The method according to claim 1, wherein the coating compound has a total solid content of 3% to 7%.

13. An elastomer article having a coating, wherein the coating is Aqueous hydrogel polymer and A first elastomer material and a second elastomer material are added to the aqueous hydrogel polymer to form a coating compound. Includes, The first elastomer material and the second elastomer material are different materials. The aforementioned coating formulation does not contain the added solvent. The second elastomer material is nitrile latex. The elastomer article contains the same material as the first elastomer material, The aqueous hydrogel polymer is present in the coating formulation in an amount of 50% to 85% by weight. Elastomer articles.

14. The elastomer article according to claim 13, wherein the first elastomer material is present in an amount of 0.5% to 37% by weight of the coating compound.

15. The elastomer article according to claim 13, wherein the second elastomer material is present in the coating compound in an amount of 0.5% to 25% by weight of the coating compound.

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