Voc-free carrier-type composition containing cross-linkable acrylic resin and its use as a release agent

Abstract

A mold release composition for forming a coating on a surface. The composition comprises a curable resin having the formula (I) or (II): (I), or (II). A carrier for the curable resin is also provided. A molding process is also provided, which comprises applying the composition to a mold surface. The composition is cured to form a mold release coating. A material is placed in contact with the mold release coating to form an article. The article is then released from contact with the mold release coating.

Description

[0001] Related applications This application is a non-provisional application that claims priority to U.S. Provisional Application No. 63 / 728,970, filed on December 6, 2024, the contents of which are incorporated herein by reference. Invention Field This invention generally relates to a composition containing a dilutable crosslinkable acrylic resin, which can be used as a release agent and has good handling properties and environmentally friendly characteristics. Background of the Invention The molding industry uses release agents to release articles made of various molding media from various types of molds made of various materials. These release agents can be divided into several categories and further subdivided according to their durability (the number of cycles between reapplications of the release agent).

[0002] Single-use release agents are a common type of release agent. These release agents are typically applied in every molding cycle. If a single-use release agent adheres to the mold surface, that adhesion is minimal, and its release effect is achieved through the release agent's own failure, detaching from the mold surface, transferring, or adhering to the molded part. Single-use release agents further provide excellent ease of demolding of the molded part and help keep the mold surface clean, preventing mold contamination and loss of shine. However, the transfer of single-use release agents to the molded part can adversely affect its performance because the molded part is "coated" with the release agent. This adverse effect includes, for example, adhesion between the part and the support devices (often called "inserts") used to support and / or mount the molded part, the paintability of the molded part, the acceptability of the molded part to adhesives, or other properties. Because single-use release agents do not adhere to the mold surface, they need to be reapplied to the mold surface in each molding cycle, thus exhibiting "lack of durability" and increasing labor, material usage, and cycle time.

[0003] Semi-permanent release agents are another commonly used type of release agent. They are applied at specific dosages and frequency intervals, allowing for the production and release of multiple molded parts from the mold after a single application. Semi-permanent release agents exhibit adhesion to the mold surface. Ease of release is typically achieved by forming an interface incompatible with the molding medium on the mold surface. Well-formulated semi-permanent release agents offer excellent ease of release, excellent durability (number of molding cycles between applications), excellent appearance of the molded parts (often referred to as "appearance quality"), and minimal transfer, thus not affecting adhesion to inserts, application of paint or adhesives, or other "post-molding applications." However, transfer of the semi-permanent release agent from the mold to the molded part can occur, leading to adverse effects similar to those of single-use release agents described above.

[0004] Finally, permanent release agents are another commonly used type of release agent. They are applied once and cure, remaining on the mold surface until their release effectiveness is impaired, at which point they are removed and reapplied. Permanent release agents exhibit excellent adhesion to the mold surface. Ease of release is achieved through the following: the adhesion of the permanent release agent to the mold, its incompatibility with the molding medium, and the resistance to removal of the release agent resulting from the movement (action) of the molding medium relative to the release agent (often referred to as "wear" in this article).

[0005] By using a one-time release agent, a semi-permanent release agent, or a combination of both on top of a permanent release agent, demolding ease, coating durability, and mold life can be extended.

[0006] For example, permanent release agents can be used in combination with single-use or semi-permanent release agents to aid in demolding, ease of demolding, durability (time between application of a single-use or semi-permanent release agent), and lifespan (time between initial application of a permanent release agent and its removal). The possible combinations of materials used to constitute single-use, semi-permanent, and permanent release agents are numerous. Common release agents can consist of oils, fatty acids and their salts, "waxes," silicone-based polymers, fluoropolymers and copolymers, glycols, and (without any limitation) any and all of the above substances in any combination.

[0007] This invention relates to the production of semi-permanent mold release agents that exhibit strong adhesion to mold surfaces, provide reliable release properties from molding media, and deliver excellent appearance quality to molded articles. These release agents are designed to minimize transfer to the molded article or ensure that any transfer does not adversely affect subsequent post-molding operations. Furthermore, the composition addresses environmental concerns by significantly reducing or eliminating problems associated with the bioaccumulation of fluorinated chemicals.

[0008] Therefore, there remains an unmet need for a water-based release agent with good environmental properties that can be used in a variety of release formulations throughout the manufacturing industry. Invention Overview A release composition for forming a coating on a surface is provided. The composition comprises a curable resin having formula (I) or formula (II):

[0009] Where n is an integer ≥ 3; x and y are each positive integers; and R and R' are the numbers that appear each time. 1Independently, it is a reactive group selected from the following: glycidoxy, C1-C8 alkoxy, C1-C8 alkoxy with a substituent, chlorohalogen, C1-C8 chloroalkyl, primary or secondary amines where each group is C0-C8, terminal isocyanate, urea, C2-C8 straight-chain hydrocarbon with at least one olefinic unsaturated bond and a substituent, acryloyl, allyl, hydroxy, methacryloxy, acryloyloxy, mercapto, vinyl, styryl, chloropropyl, and / or thioether; R and R 1 The substituents may include sulfonyl groups; or R and R 1 The non-reactive group is selected from the following: vinyl-saturated C0-C8 straight-chain or branched alkyl groups; subject to the following conditions: R and R in formula (I) or (II) 1 At least three reactive groups coexist, and further, R and R 1 Any hydrogen present in the group is non-volatile. A carrier for this curable resin is also provided.

[0010] A molding method is also provided, comprising applying the composition to a mold surface; curing the composition to form a release coating; placing material in contact with the release coating to form an article; and then demolding the article, removing it from contact with the release coating.

[0011] Detailed description of preferred embodiments The following detailed description is merely exemplary in nature and is in no way intended to limit the scope, application, or use of the invention, as these are subject to change. The invention is described in conjunction with the non-limiting definitions and terminology contained herein. These definitions and terminology are not intended to limit the scope or practice of the invention, but are set forth for illustrative and descriptive purposes only.

[0012] This invention comprises an acrylic resin or an acrylic-styrene resin, each molecule of which has at least three reactive groups to provide mold adhesion and crosslinking density. The composition can be dissolved alone or with the aid of an emulsifier in an organic solvent or water free of volatile organic compounds (VOCs). In some embodiments, the composition functions as a semi-permanent mold release agent during molding. In some embodiments, the acrylic or acrylic-styrene resin is provided in emulsion or microemulsion form. These components are readily combined with additive materials having mold release properties to prepare mold release agent compositions, such as silanes or siloxanes, waxes, polyalphaolefins, modified polyalphaolefins, non-functional acrylic resins or emulsions, and lubricants. The acrylic or acrylic-styrene resin is also readily blendable with additives such as rheology modifiers, solvents, additional surfactants besides those already present in the emulsion form, defoamers, and any combination thereof. The formulations of this invention are suitable for atomization to deposit a layer on a heated mold and allow sufficient time at high temperatures for curing to form a coating thereon. The resulting coated molds are particularly suitable for molding a variety of elastomeric articles.

[0013] It should be understood that when a numerical range is provided, the range is intended to cover not only the endpoints of the range but also all intermediate values ​​within the range that are explicitly included in the range and vary depending on the last significant digit of the range. For example, the range from 1 to 4 is intended to include 1-2, 1-3, 2-4, 3-4, and 1-4.

[0014] The acrylic resin that can be used in the compositions of the present invention has the following formula (I): Where n is an integer ≥ 3. For the purposes of this invention, reactive groups include those that react on the mold surface or airbag surface to form a bond with other polymers of formula (I or II), the mold surface, or both. Reactive groups R and R1 that can be used in this invention... 1 They may be the same or different, and each independently (but not limited to): glycidyloxy, C1-C8 alkoxy, C1-C8 alkoxy with substituents, fluorine or chlorohalogen, C1-C8 haloalkyl, primary or secondary amine (where each group is C0-C8), terminal isocyanate, urea, C2–C8 or longer chain linear hydrocarbon group containing at least one olefinic unsaturated bond and with substituents, acryloyl, allyl, hydroxy, methacryloxy, acryloyloxy, mercapto, vinyl, styryl, chloropropyl, and / or thioether. R and R 1 The substituents may include sulfonyl groups or other suitable nonfluorinated substituents. Conversely, the nonreactive groups in the molecule of formula (I) schematically include: R and R1 They may be the same or different, and each is independently a saturated C0-C8 or longer straight-chain or branched alkyl group. Formula (I) is limited to the following conditions: R and R in formula (I) 1 At least three reactive groups are present, and further, any hydrogen present in the R group is non-volatile to prevent hydrogen escape. Without being bound by any particular theory, the reactive groups promote mold adhesion and crosslinking density of the resulting coating.

[0015] The acrylic-styrene resin that can be used in the compositions of the present invention has the following formula (II):

[0016] Among them, variables n, R and R 1 Having the same meaning as described above regarding formula (I), x and y are each positive integers. It should be understood that resin (II) can be a block copolymer (having a region relatively rich in styrene or acrylic subunits), an alternating copolymer, a random copolymer, or any combination thereof. Formula (II) is subject to the following condition: R and R in formula (II) 1 At least three reactive groups coexist, and further, any hydrogen present in the R group is non-volatile to prevent hydrogen escape. Without being bound by any particular theory, the reactive groups promote mold adhesion and crosslinking density of the resulting coating.

[0017] Resins of formula (I) or (II) typically have a weight-average molecular weight (Mw) of 300 to 500,000 as determined according to ASTM 4001. It should be understood that factors considered in selecting Mw include, illustratively, composition viscosity, degree of crosslinking upon curing, emulsification properties, ease of release, and durability. In some embodiments of the invention, the resin of formula (I) or (II) is diluted to be present in a fully formulated composition at a total weight percentage of 0.8 to 28.0%.

[0018] In at least one embodiment of the invention, the reactive polymer is a telechelic polymer, while in other embodiments, it does not contain reactive groups at the polymer ends (i.e., non-telechelic or side-attached). In some embodiments of the invention, the polymer of formula (I) or (II) has 4, 5, 6, up to 20 or more reactive groups. It should be understood that the molecular weight value of each reactive group can be easily varied, and a lower molecular weight per reactive group is generally associated with a harder coating with better mold surface adhesion compared to a higher molecular weight per reactive group. In some embodiments of the invention, the polymer of formula (I) or (II) has side-attached reactive groups. In other embodiments of the invention, all said reactive groups in the polymer of formula (I) or (II) are the same groups. It is not intended to be construed as being bound by a particular theory of action to the assumption that the side-attached reactive groups are bonded to the mold surface and the interior of the semi-permanent release layer.

[0019] As used in this article, a CO group indicates a group that does not contain a carbon chain; for example, a CO alkyl hydroxyl group indicates that the hydroxyl group is directly bonded to the rest of the molecule.

[0020] In some embodiments of the invention, the resins of formula (I), formula (II), or a combination of both, are present in the form of an emulsion or microemulsion.

[0021] For the purposes of this invention, emulsions are defined as thermodynamically unstable and therefore subject to phase separation over time, wherein the droplet size of a few oil phases is between 100 nanometers and 1 micrometer.

[0022] For the purposes of this invention, microemulsions are defined as thermodynamically stable and therefore do not undergo phase separation over time, wherein the droplet size of a few oil phases is less than 100 nanometers.

[0023] Emulsions formed from resins of formulas (I) and (II) are known in the art, illustratively including the materials and techniques detailed by F. Zhang et al. in *Macromol. Sci.*, Series A, Vol. A41, No. 1, pp. 15–27 (2004), and by F. Zhang et al. in *Polymer International*, Vol. 53, No. 9, pp. 1353–1359 (2004). Similarly, microemulsions formed from resins of formulas (I) and (II) are known in the art, illustratively including the materials and techniques detailed by M. Wang et al. in *Proceedings of the 11th China Academic Conf. on Printing and Packaging*, pp. 599–606. It should be understood that such emulsifying resins are commercially available.

[0024] In some embodiments of the invention, the composition comprises a silane or siloxane material that can be used as a conventional mold release agent. The silane or siloxane materials that can be used in this invention schematically include those having the general formula (III): R 2 3 SiO (R 2 2 SiO) z (R 2 R 3 SiO) y Si-R 2 3 (III) R appears each time 2 Each R that appears independently is a hydroxyl or monovalent organic group. 3 Independently a monovalent organic group, it does not react with aliphatic unsaturated organic groups and silicon-bonded hydrogen atoms in the composition, z is an integer value of 0 or greater, y is an integer value of 1 or greater, and is limited by the following condition: the values ​​of x and y are sufficient to give the release agent a viscosity of 50 to 1,500,000 cps at the molding process temperature. In some embodiments of the invention, R 2 The hydroxyl group is present only at the terminal position. Alternatively, R appears every time. 2 Independently C1-36 alkyl; and each occurrence of R 3 Independently an aromatic group, such as phenyl, tolyl, or xylyl. Alternatively, each R... 2 It can be methyl, and each R 3 It can be phenyl.

[0025] It should be understood that α,ω-dihydroxy-terminated polydiorganosiloxanes can also be used in this invention. These α,ω-dihydroxy-terminated polydiorganosiloxanes have the general formula (IV): HO-R 4 2SiO-(R 4 2SiO)y-SiR 4 2-OH (IV) R appears each time 4 Independently for R as described above 3The aromatic groups exemplified, or monovalent substituted or unsubstituted hydrocarbon groups without aromatic groups and aliphatic unsaturated bonds as exemplified above, are represented by the subscript y, which is an integer equal to or greater than 1, as detailed above. It should be understood that silane or siloxane materials can be a single type of molecule, such as polydiorganosiloxane, or a combination of two or more molecules that differ in at least one of the following properties: structure, viscosity, average molecular weight, siloxane unit, and sequence. The viscosity of silane or siloxane materials is typically 50 to 1,000 mPa·s at 25°C. Exemplary formulations include products sold under the trade name DOWSIL-20® (Dow Chemical Company), trimethylsiloxy-terminated medium-viscosity polydimethylsiloxanes (e.g., products sold under the trade name DOWSIL-2-3387® (Dow Chemical Company), and those detailed in US20190002732A1. Silane or siloxane materials are optional in the compositions of the present invention, and are present in an amount of 0 to 5% of the total weight of the completely formulated composition.

[0026] In some embodiments of the invention, the silane or siloxane material is emulsified to promote stable suspension in aqueous or VOC-free solvent systems. Suitable silane or siloxane emulsifiers in this invention are nonionic surfactants. Nonionic surfactants that can be used in this invention schematically include: polyoxyethylene nonionic surfactants, polyol nonionic surfactants, alkylolamide nonionic surfactants, and organosilicon nonionic surfactants, or any combination of the foregoing. Specific exemplary nonionic surfactants that can be used in this invention schematically include: polyoxyethylene nonylphenol ether ammonium sulfate, lauryl alcohol polyoxyethylene ether, lauryl alcohol polyoxyethylene ether, lauryl alcohol polyoxyethylene ether, lauryl alcohol polyoxyethylene ether, C12-C16 mercaptool polyoxyethylene ether, C12-C16 alkyl alcohol polyoxyethylene ether, tridecyl alcohol polyoxyethylene ether, tridecyl alcohol polyoxyethylene ether, tridecyl alcohol polyoxyethylene ether, cetyl alcohol polyoxyethylene ether, cetyl alcohol polyoxyethylene ether, cetyl alcohol polyoxyethylene ether, isocetyl alcohol polyoxyethylene ether, cetyl alcohol polyoxyethylene ether, octadecyl alcohol polyoxyethylene ether, hexadecyl alcohol polyoxyethylene ether, octadecyl alcohol polyoxyethylene ether, tallow alcohol polyoxyethylene Ethers, stearyl alcohol polyoxyethylene ether, oleyl alcohol polyoxyethylene ether, nonylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, mercaptophenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, cocoamine polyoxyethylene ether, ethylenediamine polyoxyethylene-polyoxypropylene-polyoxyethylene block polyether, polyethylene glycol dilaurate, polyethylene glycol dilaurate, polyethylene glycol stearate, polyethylene glycol stearate, polyoxyethylene glycerol monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate, polyether-modified polysiloxanes, and any combination thereof. The number of repeating subunits in polymeric surfactants is known in the art because they are a class of commercially available chemical components. Emulsifiers used for silane or siloxane materials are typically used at a concentration of 0.2% to 25.0% of the weight of the silane or siloxane material.

[0027] This invention is based on a VOC-free or VOC-containing aqueous carrier in which other components are suspended or dissolved. The carrier typically comprises 85% to 99.9% of the total weight of the composition. Besides water, other VOC-free solvents suitable for the carrier illustratively include acetone. Carriers containing moderately volatile organic compounds (IVOCs) are conventional in the art. In some embodiments of the invention, the organic solvent is miscible with water and acts as a co-solvent in a small amount to enhance the storage stability of the composition.

[0028] In some embodiments of the invention, the composition of the present invention includes one or more of the following: antimicrobial agents, catalysts, rheology modifiers, wetting agents (or rewetting agents), flow agents, fillers, defoamers, gas scavengers, fluorescent agents, or any combination thereof.

[0029] Antimicrobial agents that can be used in this invention schematically include: benzothiazolinone; 5-chloro-2-methyl-4-isothiazolin-3-one; 2-methyl-4-isothiazolin-3-one; natural essential oils, such as oregano oil; 2-bromo-2-nitro-1,3-propanediol; glutaraldehyde; and any combination thereof. Typically, the amount of antimicrobial agent in the compositions of this invention is 0 to 2% of the total weight. In other embodiments of the invention, when an antimicrobial agent is present, the amount of synthetic antimicrobial agent is 0.05% to 0.8% of the total weight.

[0030] It should be understood that the compositions of the present invention are used as semi-permanent release agents in certain applications. In the context of the present invention, "semi-permanent" is intended to define a coating applied to a mold surface that provides more than one release with a single application.

[0031] In order to be used as a semi-permanent release agent, the release agent of the present invention must provide both the adhesion of the release agent to the mold (through one or more adhesion mechanisms) and the non-adhesion of the molded article to the release agent interface.

[0032] Formulation requirements vary widely and are typically based on mold composition, the "erosiveness" of the molding medium (dissolving and / or abrading the release agent interface solvation), and requirements for ease of release and / or mechanical "slipperyness" (or no such requirements) (which are usually determined by the geometry of the molded part).

[0033] Typical and preferred compositions provided according to the present invention are shown in Table 1.

[0034]

[0035] The compositions of this invention are readily available in kit form, such as in bottles or aerosol cans. The bottles are optionally equipped with a pump or spray nozzle. The kits of this invention are usable by optionally providing a wiping cloth for removing excess composition, along with associated operating instructions. These instructions may also provide details on how to reapply the composition after the applied film has worn away. It should also be understood that pre-impregnated wiping cloths may also be provided, with similar instructions for application to substrates.

[0036] The present invention is further described in detail by the following non-limiting examples, which are intended to further illustrate the preparation of specific inventive compositions and certain properties of the resulting films on substrates.

[0037] Example 1 A semi-permanent release agent with a total non-volatile organic compound (TNV) content of 1.0% was prepared by stirring 1.93 parts by weight of acrylic emulsion into 98.07 parts by weight of deionized water. 0.10 parts by weight of a bactericide was added as a preservative under continuous stirring. The resulting composition was applied to the surface of a thermosetting steel O-ring mold heated to 350℉. 0.70 g of peroxide-cured silicone elastomer was introduced into the O-ring portion of the mold, and a piece of folder paper was placed on the elastomer. This "assembly" was placed in a press with upper and lower heated pressure plates, maintaining the mold at 350℉. A force of 2000 psi was applied, and the silicone elastomer was cured for 3 minutes. The force required to remove the silicone elastomer from the O-ring was repeatedly measured until the removal force (ease of release) exceeded 100 g. The composition was used to release the silicone elastomer for 10 rounds under conditions below this force. The composition was then reapplied (or repaired) on the existing coating on the hot mold. It was demolded 10 more times at a weight below 100 grams.

[0038] Example 2 A semi-permanent release agent with a total nonvolatile organic compound (TNV) content of 1.0% and additional flow properties was prepared by stirring 1.5 parts by weight of acrylic emulsion into 92 parts by weight of deionized water. Then, 0.5 parts by weight of a flow agent, 5 parts by weight of a wetting agent, and 0.2 parts by weight of a bactericide were added. The resulting composition was applied similarly to that described in Example 1. This formulation is used when higher elastomer flow rates may be required in molds with complex geometries.

[0039] Comparative Example A A fluorinated composition modified with polydimethylsiloxane and free of "acrylic emulsion" was applied to the same 350℉ thermosetting steel O-ring tool. The fluorinated release agent composition was applied to the surface of the thermosetting steel O-ring mold heated to 350℉. 0.70 g of peroxide-cured silicone elastomer was introduced into the O-ring portion of the mold, and a piece of folder paper was placed on the elastomer. This "assembly" was placed in a press with upper and lower heated pressure plates, keeping the mold at 350℉. A force of 2000 psi was applied, and the silicone elastomer was cured for 3 minutes. The force required to remove the silicone elastomer from the O-ring was repeatedly measured until the removal force (ease of release) exceeded 100 g. The composition released the silicone elastomer in only 4 rounds under conditions below this force. The composition was then reapplied (or repaired) on the existing coating on the hot mold. Four more rounds of release occurred at a force below the 100 g threshold.

[0040] The formulations of Examples 1, 2, and Comparative Example A were deposited onto various hot molds after air atomization and cured at high temperatures (>250℉). Molds coated in this manner can then be used to mold various elastomer materials. Compared to Comparative Example A, Example 1 exhibits similar release effects for silicone elastomers, P-EPDM, and bisphenol / amine / peroxide-cured fluoroelastomers, with lower cost and better environmental friendliness.

[0041] While at least one exemplary implementation has been presented in the foregoing detailed description, it should be understood that numerous variations exist. It should also be understood that the exemplary implementations are merely examples and are not intended to limit the scope, applicability, or configuration of the implementations in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient roadmap for implementing one or more of the exemplary implementations.

Claims

1. A release composition for forming a coating on a surface, said release composition comprising: Curable resins having formula (I) or formula (II): (I), or (II) Where n is an integer ≥ 3; x and y are each positive integers; and R and R' are the numbers that appear each time. 1 Each of the following reactive groups is independently selected from: glycidoxy, C1-C8 alkoxy, C1-C8 alkoxy with substituents, chlorohalogen, C1-C8 chloroalkyl, primary or secondary amines where each group is C0-C8, terminal isocyanate, urea, C2-C8 straight-chain hydrocarbon with at least one olefinic unsaturated bond and substituents, acryloyl, allyl, hydroxy, methacryloxy, acryloyloxy, mercapto, vinyl, styryl, chloropropyl, and / or thioether; R and R 1 The substituents may include sulfonyl groups; or R and R 1 The non-reactive group is selected from the following: vinyl-saturated C0-C8 straight-chain or branched alkyl groups; subject to the following conditions: R and R in formula (I) or (II) 1 At least three reactive groups coexist, and further, R and R 1 Any hydrogen present in the group is non-volatile; and Carrier for the curable resin.

2. The release composition according to claim 1, further comprising at least one surfactant suitable for producing an emulsion or microemulsion of the curable resin having formula (I) or formula (II).

3. The release composition according to claim 1, further comprising a silane-based material or a siloxane-based material.

4. The release composition according to claim 1, further comprising at least one of an antimicrobial agent, a catalyst, a rheology modifier, a wetting agent (or a rewetting agent), a filler, a defoamer, a gas scavenger, a fluorescent agent, or any combination thereof.

5. The release composition according to claim 1, wherein the curable resin having formula (I) or formula (II) accounts for 1% to 5% of the total weight of the release composition.

6. The release composition according to claim 1, wherein all of the reactive groups are side-mounted.

7. The release composition according to claim 1, wherein each of the reactive groups in formula (I) or (II) is independently one of glycidoxy, C1-C8 alkoxy, halogen, amino, isocyanate, urea, olefinic unsaturated group, methacryloyloxy, acryloyloxy, mercapto, vinyl, styryl, C1-C8 haloalkyl, acryloyl, allyl, halogen, and hydroxyl.

8. The release composition according to claim 1, wherein all the reactive groups in formula (I) or (II) are the same group.

9. The release composition according to claim 1, further comprising a VOC-free co-solvent.

10. The release composition according to claim 1, wherein the solvent is water only.

11. The release composition according to claim 1, wherein the curable resin is only one of formula (I) or formula (II).

12. A molding method, comprising: Apply the release composition according to claim 1 to the surface of the mold; The release composition is cured to form a release coating; The material is placed in contact with the release coating to form an article; and Remove the product from contact with the release coating.

13. The method according to claim 12, wherein the mold surface is a steel or aluminum surface.

14. The method of claim 12, further comprising performing more than one molding cycle without reapplying the release composition of any one of claims 1 to 11 to the mold surface.

15. The method of claim 14, further comprising the steps of repeatedly injecting the material and removing the article.

16. The method of claim 14, wherein the mold surface is the airbag surface.

17. The method of claim 12, wherein the article is an elastomer.

18. A membrane formed by evaporating the carrier system of claim 1 on a substrate at a temperature above 250℉.

19. A kit comprising: According to claim 1, the release composition is located in a spray bottle or aerosol can; and Instructions for applying the release composition to a substrate to form the film.

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