Modified cocure system with UV and heat initiation for single and two-component applications

Abstract

A cocure system comprising: - 5.0 to 40.0 wt% of a polyol; - 56.0 to 94.8 wt% of a resin component; and - 0.2 to 4.0 wt% of an initiator selected from a UV-activated initiator, a heat- activated initiator or mixtures thereof, for curing the polyol and resin components without the use of an isocyanate component, based on the total weight of the polyol, resin component and initiator.

Description

Attorney Docket No. 134-P0005PCTMODIFIED COCURE SYSTEM WITH UV AND HEAT INITIATION FOR SINGLE AND TWO-COMPONENT APPLICATIONSFIELD OF THE INVENTION

[0001] The invention relates to a modified CoCure system that omits isocyanate (ISO) components and utilizes UV or heat initiators to achieve single-component curing. Additionally, the system can employ traditional polyester initiators for a two-component curing process. The polyol and resin are combined to form a single-component mixture. This modification provides advantages in dispensing equipment compatibility and eliminates issues associated with ISO crystallization.BACKGROUND

[0002] Traditional CoCure systems involve four components: a resin, a resin initiator, a polyol (B-side), and an isocyanate (A-side). These systems, while effective, pose challenges including isocyanate reactivity with air and crystallization, which can damage equipment and clog spray heads. The present subject matter presents a system that seeks to address these issues by eliminating (excluding) the isocyanate component and introducing UV or heat-activated initiators for single-component curing, or combinations of initiators for two-component processes. Such systems not only provide flexibility but can also be employed in challenging conditions where colored or thick materials are employed.SUMMARY OF THE INVENTION

[0003] In one embodiment, the present disclosure provides a cocure system comprising 5.0 to 40.0 wt% of a polyol, 56.0 to 94.8 wt% of a resin component, and 0.2 to 4.0 wt% of an initiator selected from a UV-activated initiator, a heat-activated initiator or mixtures thereof, for curing the polyol and resin components without the use of an isocyanate component, based on the total weight of the polyol, resin component and an initiator.Attorney Docket No. 134-P0005PCTPreferably, the cocure system comprises 5.0 to 40.0 wt% of a polyol; 57.0 to 94.0 wt% of a resin component; and 1 .0 to 3.0 wt% of an initiator.

[0004] In another embodiment, the present disclosure provides a cocure system comprising 5.0 to 40.0 wt% of a polyol; 56.0 to 94.8 wt% of a resin component; and 0.2 to 4.0 wt% of an initiator system for room-temperature curing comprising an initiator and a promotor, wherein the initiator is selected from methyl ethyl ketone peroxide, benzoyl peroxide, cumene hydroperoxide, azobisisobutyronitrile, tert-butyl perbenzoate, lauroyl peroxide, or mixtures thereof, and the promotor is selected from cobalt compounds selected from cobalt naphthenate or cobalt octoate, or amine compounds selected from N,N-Dimethylaniline (DMA) or N,N-Diethylaniline (DEA), for curing the polyol and resin components without the use of an isocyanate component, wherein when the initiator is benzoyl peroxide the promotor is preferably the amine compound, and when the initiator is methyl ethyl ketone peroxide the promotor is preferably the cobalt compound, based on the total weight of the polyol, resin component, and the initiator system. Preferably, the cocure system comprises 5.0 to 40.0 wt% of the polyol; 57.0 to 94.0 wt% of the resin component; and 1 .0 to 3.0 wt% of the initiator system.

[0005] In still another embodiment, the present disclosure provides a method for curing comprising mixing a composition comprising a polyol, a resin component and a UV- activated initiator, thereby forming a mixture; and exposing the mixture to UV light to achieve a single-component curing.

[0006] In another embodiment, the present disclosure provides a method for curing comprising mixing a composition comprising a polyol, a resin component and a heat- activated initiator, thereby forming a mixture; and heating the mixture to achieve a singlecomponent curing.

[0007] In an embodiment, the present disclosure provides a method for curing comprising mixing a composition comprising a polyol, a resin component and an initiator system for room-temperature curing at a temperature of 60°F to 100°F. For the purposes of this specification, the term “room temperature” or “ambient” means 60°F to 100°F.

[0008] In another embodiment, the present disclosure provides a method for producing a laminated article comprising applying a cocure system to an article or a molded article in a mold, wherein the cocure system can be: (1 ) a cocure system comprising 5.0 to 40.024901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT wt% of a polyol; 56.0 to 94.8 wt.% of a resin component; and 0.2 to 4.0 wt% of an initiator selected from a UV-activated initiator, a heat-activated initiator or mixtures thereof, for curing the polyol and resin components without the use of an isocyanate component or (2) a cocure system comprising 5.0 to 40.0 wt% of a polyol; 56.0 to 94.8 wt% of a resin component; and 0.2 to 4.0 wt% of an initiator system for room-temperature curing comprising an initiator and a promotor, wherein the initiator is selected from methyl ethyl ketone peroxide, benzoyl peroxide, cumene hydroperoxide, azobisisobutyronitrile, tertbutyl perbenzoate, lauroyl peroxide, or mixtures thereof, and the promotor is selected from cobalt compounds selected from cobalt naphthenate or cobalt octoate, or amine compounds selected from N,N-Dimethylaniline (DMA) or N,N-Diethylaniline (DEA), for curing the polyol and resin components without the use of an isocyanate component, wherein when the initiator is benzoyl peroxide the promotor is preferably the amine compound, and when the initiator is methyl ethyl ketone peroxide the promotor is preferably the cobalt compound, based on the total weight of the polyol, resin component, and initiator system. When the cocure system is applied outside a mold, the system can contain a wax. Preferably, the cocure system contains 5.0 to 40.0 wt% of the polyol, 57.0 to 94.0 wt% of the resin component, and 1 .0 to 3.0 of the initiator or initiator system.DETAILED DESCRIPTION OF THE INVENTION

[0009] The invention provides a CoCure system comprising a combination of polyol and resin components (B-side) and a UV and / or a heat-activated initiator. This system can function as a single-component system using UV or heat activation, or with the addition of a traditional polyester initiator, as a two-component system. Additionally, the system can use a combination of UV and heat or UV and traditional initiators (co-triggering) to enable initial UV-triggered reaction followed by heat or traditional initiator-generated cascading curing, suitable for thick laminates or colored materials. The absence of an isocyanate component simplifies the process, reducing equipment maintenance issues, and enhances ease of use.

[0010] In one embodiment, the present disclosure provides a cocure system comprising 5.0 to 40.0 wt% of a polyol; 56.0 to 94.8 wt% of a resin component; and 0.2 to 4.0 wt% of an initiator selected from a UV-activated initiator, a heat-activated initiator or mixtures34901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT thereof, for curing the polyol and resin components, without the use of an isocyanate component, based on the total weight of the polyol, resin component and initiator.

[0011] In another embodiment, the present disclosure provides a cocure system comprising 5.0 to 40.0 wt% of a polyol; 56.0 to 94.8 wt% of a resin component; and 0.2 to 4.0 wt% of an initiator system for room-temperature curing comprising an initiator and a promotor, without the use of an isocyanate component, based on the total weight of the polyol, the resin component, and the initiator system.

[0012] The curing systems of the present subject matter are conducted without isocyanates and in some embodiments can include a UV-initiator, heat-initiator, or with an initiator system for use with room temperature (60° to 100°F) curing, where the initiator system includes an initiator and a promotor.

[0013] It has been found that conventional polyesters and vinyl ester resins are compatible with cocure layers.

[0014] Curing System Initiators

[0015] UV-lnitiator

[0016] The UV activated initiators described in the present disclosure are selected from benzoin ethers such as benzoin methyl ether and benzoin ethyl ether, acetophenone derivatives such as 1 -hydroxycyclohexyl phenyl ketone and 2-hydroxy-2-methyl-1 - phenylpropan-1 -one, benzyl ketals such as benzyl dimethyl ketal, phosphine oxides such as diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) and bis(2,4,6- trimethylbenzoyl)-phenylphosphine oxide, and thioxanthones such as isopropylthioxanthone, or mixtures thereof. Such initiators are selected based on the specific requirements of the curing process without isocyanates, such as the wavelength of UV light, the desired-cure speed, and the final properties of the cured resin. A typical UV-initiator is BASF Irgacure 819.

[0017] Heat-Initiator

[0018] The heat-activated initiators described in the present disclosure are selected from benzoyl peroxide, methyl ethyl ketone peroxide, cumene hydroperoxide, azobisisobutyronitrile, tert-butyl perbenzoate, lauroyl peroxide or mixtures thereof. Such44901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT heat-activated initiators are selected based on factors such as the desired cure temperature, resin system, and the specific properties required in the final cured product. They decompose at certain temperatures to produce free radicals, which then initiate the polymerization of the resin. Applicable temperatures for the heat initiators ranges from room temperature (ambient) cures from 60 to 100°F, or at elevated temperatures from 105 to 220°F.

[0019] Preferably, the heat-activated initiator is benzoyl peroxide or methyl ethyl ketone peroxide.

[0020] Initiator System

[0021] The initiator system for room-temperature curing comprises an initiator and a promoter. Typically, the initiator is selected from methyl ethyl ketone peroxide, benzoyl peroxide, cumene hydroperoxide, azobisisobutyronitrile, tert-butyl perbenzoate, lauroyl peroxide, or mixtures thereof. The promotor is typically a cobalt compound selected from cobalt naphthenate, cobalt octoate, or mixtures thereof; or amine compounds selected from N,N-Dimethylaniline (DMA) or N,N-Diethylaniline (DEA). For the purposes of this specification, when the above initiator is used alone, without a promoter, it is termed a “traditional polyester initiator.”

[0022] In some embodiments, the initiator system will be used specifically without an additional UV initiator or a heat-activated initiator. In this case, the initiator system, containing an initiator and promoter as described above will not also contain a separate UV initiator or a heat-activated initiator, not listed above as an initiator in the initiator system.

[0023] Preferably, when the initiator is benzoyl peroxide the promotor is the amine compound, and when the initiator is methyl ethyl ketone peroxide the promotor is the cobalt compound.

[0024] These initiators allow for the curing of polyester resins without the need for external heat or UV light, making them suitable for a variety of applications where ambient curing conditions are necessary or preferred, such as closed molded parts.

[0025] Preferably, for room temperature curing applications, only the above-described initiator system is used, without an additional UV initiator or a heat-activated initiator.54901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT

[0026] Polyols

[0027] The polyols described in the present disclosure are selected from aliphatic polyols, aromatic polyols, polyether polyols such as polypropylene glycol, polytetramethylene ether glycol, or polyethylene glycol, polyester polyols such as adipate-based polyols, phthalate-based polyols, azelate and sebacate polyols, polycarbonate polyols, polycaprolactone polyols, natural oil-based polyols such as soy-based oils, castor oils, sunflower oils, palm oils, canola oils, linseed oils, and other vegetable oil-based polyols, and polybutadiene polyols. A typical polyol resin is BASF Elastocoat 74400R.

[0028] Polyester resins

[0029] The polyester resin component in the present disclosure is selected from a polyester, an unsaturated polyester, a vinyl ester, an epoxy, an alkyd, or a saturated polyester. When the polyester is an unsaturated polyester, the unsaturated polyester is preferably an isophthalic unsaturated polyester.

[0030] A typical polyester resin component is a clear laminating resin such as Silmar 3RE249A.

[0031] Laminating Resins

[0032] The CoCured polyester resins described above can be used in laminating applications. Reinforcing materials such as fiberglass, are often also employed. In such service the resins can be mixed with additives such as thixotropic agents, accelerators, and promoters to adjust the viscosity and curing rate. Reinforcing materials can be added to the cocured polyester resin in an amount from 1 .0 to 40.0 wt% based on the total weight of the cocured polyester resin and reinforcing materials

[0033] Coatings

[0034] The CoCured polyester resins can also be used in coating services where they provide protective and decorative finishes for surfaces such as metals, wood, concrete and plastics. Additives such as fillers, pigment, stabilizers, and flow agents can be added64901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT to enhance properties such as UV resistance, color, and application characteristics. In such applications, the coatings can be applied using brushes, rollers, or spray equipment. Coating applications can use neat resins or incorporate additives up to 20 wt% based on the total weight of the composition. These additives can be UV stabilizers, thixotropic agents, waxes, pigments, curing additives, fillers and air release agents.

[0035] Adhesives

[0036] The Cocured polyester resins can also be used as adhesives for bonding materials such as metals, plastics, wood and composites, particularly in automotive aerospace, construction and consumer products. In these applications, the resins can be combined with modifiers such as flexibilizers, tougheners, and thixotropic agents to improve flexibility, toughness and ease of application. Filler ranges can be broad with typical ranges from 30-80% by weight based on the total weight of the composition. These fillers include combinations of talc, calcium carbonate, glass microspheres and aluminum trihydrate, milled glass fibers, fumed or precipitated silica clay and barium sulfate.

[0037] Putty

[0038] The Cocured polyester resins can also be used in putty applications, where the resin is combined with fillers such as talc, calcium carbonate, or glass microspheres, added to provide body to the putty and make it easier to apply. The putty can be applied with a spatula or putty knife. Fillers ranges can be broad with typical ranges from 30-80% by weight based on the total weight of the composition. These fillers include combinations of talc, calcium carbonate, glass microspheres and aluminum trihydrate.

[0039] For each of the above applications: coatings, adhesives, putty, adhesives and lamination, curing of the resins can be performed at room temperature. The CoCured resins thus provide flexibility that allows them to be transformed into coatings, putties, adhesives, and laminating materials by modifying their formulations and curing processes. This adaptability makes them invaluable in a wide range of industrial and commercial applications.

[0040] Method of Use:74901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT

[0041] The polyol and resin components are mixed with the UV or heat-activated initiator for single-component applications. Typical mixing equipment includes a broad range from conventional hand mixing to commercial dispensing equipment such as those produced by Magnum Venus Products. For single-component curing, the resultant mixture is exposed to UV light or heat. For two-component applications, an initiator system is added to the polyol and resin mixture. The mixture then cures over time. For co-triggering, the polyol and resin components are mixed with both UV and heat or traditional polyester initiators, where the UV initiator triggers the initial reaction and the heat or traditional initiator subsequently triggers a cascading curing process, ensuring thorough curing even through colored or thick laminates. Typical curing times are from 3 seconds to 40 minutes.

[0042] The cured polyester resin may then be applied to a substrate to produce a laminated article, where the application is either inside or outside of a mold. Such a substrate can include metal, ceramic, plastic, paper / cardboard, fiberglass, or concrete. Typically the cured resin is applied by spray or brush application at temperatures between 60-100°F. When the cured polyester resin is applied to the substrate outside of the mold, a wax is typically incorporated into the composition at a range of 0.5 wt% to 2 wt% based on the total weight of the composition, to prevent stickiness caused by air inhibition. The wax is preferably selected from paraffins, polyethylene, microcrystalline, and / or Carnauba.

[0043] EXAMPLES

[0044] The following examples further detail and explain the inventive compositions and process of the present disclosure and demonstrate their efficacy for producing improved CoCured polyester systems. Those skilled in the art will recognize many variations that are within the spirit of the invention and scope of the claims.

[0045] EXAMPLES 1-8

[0046] Polyester Resins:84901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT

[0047] Resin A: Silmar Surfboard resin SIL 66BE-249A unsaturated polyester resin, available from Interplastic Corporation

[0048] Resin B: COR61 -AA-270LF unsaturated polyester resin, available from Interplastic Corporation.

[0049] Polyol A

[0050] BASF ELASTOCOAT 74400R Resin

[0051] Chopped Strand Mat:

[0052] JUSHI Group 1.5oz, Product Code: E6CRMC450-1270-P04

[0053] Chopped strand Mat is fiberglass strands cut into 1 .5” lengths randomly stacked together to provide 1 .5 oz of fiberglass per one square foot.

[0054] Promoter:

[0055] Duroct Cobalt 12%: Product # DCM12712-35; Dura Chemicals, Inc.

[0056] UV Initiator

[0057] Darocur 1173; Ciba

[0058] Samples:

[0059] Sample A: 63.82 wt% Resin A; 1 .47 wt% Methyl Ethyl Ketone Peroxide (MEKP);0.21 % (UV initiator); .13 wt% promoter; and 34.37 wt% fiberglass. Room temperature cure, no exposure to UV.

[0060] Sample B: 53.99 wt% Resin A; 1 .47 wt% MEKP; 0.21 wt% (UV initiator); .13 wt% promoter; 9.82 wt% Polyol A; and 34.38 wt % fiberglass. Room temperature cure, no exposure to UV.

[0061] Sample C: 52.95 wt% Resin A; 1 .45 wt% MEKP; 0.20 wt% (UV initiator); .13 wt% promoter; 1 .93% benzoyl peroxide; 9.63 wt% Polyol A; and 33.71 wt.% fiberglass. Room temperature cure, no exposure to UV.94901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT

[0062] Sample D: 53.73 wt% Resin A; 0.21 wt% (UV initiator); 9.77 wt% Polyol A; .13 wt% promoter; 1 .95% benzoyl peroxide; and 34.21 wt.% fiberglass. Room temperature cure, no exposure to UV.

[0063] Sample E: 54.81 wt% Resin A; 0.21 wt% (UV initiator); .13% wt% promoter;9.97 wt% Polyol A; and 34.88 wt.% fiberglass. Room temperature cure, exposure to UV for 5 Min.

[0064] Sample F: 63.59 wt% Resin B; 1 .96 wt.% benzoyl peroxide, .21 wt.% (UV initiator); 34.24 wt% fiberglass. Heat initiated cure at 160°F for 120 minutes.

[0065] Sample G: 53.80 wt% Resin B; 1 .96 wt.% benzoyl peroxide; 9.79 wt% Polyol A;.21 wt.% (UV initiator); and 34.24 wt% fiberglass. Heat initiated cure at 160°F for 120 minutes.

[0066] Sample H: 53.80 wt% Resin A; 1 .96 wt% benzoyl peroxide; 9.79 wt% Polyol A; 0.21 wt.% (UV initiator); and 34.24 wt% fiberglass. Heat initiated cure at 160°F for 120 minutes.

[0067] All the following test panels were prepared on a glass plate with various curing agents. The resin mixtures were applied as follows. The glass plate was wet out with the mixture, then an ounce and a half of chopped strand mat was applied, wet out, and rolled with a rib roller. This was repeated four times, for a total of six ounces of laminate. The panels were allowed to cure, and dwell for seven days. They were then cut on a water jet cutter and tested on a thirty thousand pound Instron machine renderring the values below according to ASTM D638.Table 1 .104901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT

[0068] The Results of the table indicate that all the values listed would be acceptable for a six-ounce laminate. Adding polyol decreased Modulus but added to Strain and elongation. Stress and load were nominal. Adding Benzoyl Peroxide enhanced the load and stress values and promoted cure.

[0069] EXAMPLES 9 & 10

[0070] Polyester Resin:

[0071] Resin A: Silmar Surfboard resin SIL 66BE-249A unsaturated polyester resin, available from Interplastic Corporation

[0072] Polyol A

[0073] BASF ELASTOCOAT 74400R Resin

[0074] Castings: Neat Resins No chop Strand Mat

[0075] Control Example 9; Sample I: 98.31 wt% Resin A; 1 .48 wt% MEKP .21 wt% Promoter.

[0076] Example 10; Sample J: 88.48 wt% Resin A; 1 .48 wt% MEKP ,21wt% Promoter; 9.83 wt% Polyol A.

[0077] Example 9 & 10 test panels were prepared and tested as follows:

[0078] Two glass plates were prepared and sealed around the edges to prevent the resin from leaking out. Spacers were used to separate the glass plates by .125 inches. The resins were vacuumed to remove air. The vacuumed resins were catalyzed at 1 .5% and114901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT poured into the glass plates. After curing, the panels were removed from the glass plates and prepaired for testing. The panels were allowed to dwell for seven days, then cut on a water jet cutter and tested on a five thousand pound instron machine renderring the values below according to ASTM D638.Table 2.Silmar Resin Casting Strain from Extensometer

[0079] The Results of the table indicate that Polyol in neat resin solution had higher stress values, lower Modulus and much higher strain and elongation.

[0080] EXAMPLES 11 & 12

[0081] Polyester Resin:

[0082] Resin A: Silmar Surfboard resin SIL 66BE-249A unsaturated polyester resin, available from Interplastic Corporation

[0083] Polyol A

[0084] BASF ELASTOCOAT 74400R Resin

[0085] Samples:

[0086] Sample A: 63.82 wt% Resin A; 1 .47 wt% MEKP .13 wt% Promoter .21 wt% UV ;34.37 wt% Fiberglass.

[0087] Sample B: 54 wt% Resin A; 1.47 wt% MEKP .13 wt% Promoter .21 wt% UV;9.82 wt% Polyol A; 34.37 wt% Fiberglass

[0088] All the following test panels were prepared and tested as follows: The glass plate was wet out with the mixture, then an ounce and a half of chopped strand mat was applied124901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT and rolled with a rib roller. Laminates were tested in a universal test machine and subjected to tensile testing using ASTM D638. This was repeated four times, for a total of six ounces of laminate. The panels were allowed to dwell for seven days, then cut on a water jet cutter and tested on a five thousand pound instron machine renderring the values below.Table 3.Silmar Resin 6 oz laminate data Strain from Extensometer

[0089] The Results of the table indicate that Adding polyol decreased Modulus but added to Strain and elongation. Load and Stress were nominal.

[0090] The preceding examples are meant only as illustrations; the following claims define the scope of the invention.4901 -3237-7945, v. 1

Claims

Attorney Docket No. 134-P0005PCTWe Claim:1 . A cocure system comprising:- 5.0 to 40.0 wt% of a polyol;- 56.0 to 94.8 wt% of a resin component; and- 0.2 to 4.0 wt% of an initiator selected from a UV-activated initiator, a heat- activated initiator or mixtures thereof, for curing the polyol and resin components without the use of an isocyanate component, based on the total weight of the polyol, resin component and initiator.

2. The cocure system of claim 1 wherein the polyol is selected from a polyether, a polyester, a polycaprolactone, a polybutadiene, a natural oil-based polyol, or mixtures thereof.

3. The cocure system of claim 2 wherein the natural oil-based polyol is selected from castor oil-based, soybean oil-based, palm oil-based, sunflower oil-based, canola oil-based, or linseed oil-based polyols.

4. The cocure system of claim 1 wherein the resin component is selected from a polyester, an unsaturated polyester, a vinyl ester, an epoxy, an alkyd, or mixtures thereof.

5. The cocure system of claim 1 wherein the UV-activated initiator is selected from benzoin ether, acetophenone derivatives, benzyl ketals phosphine oxides, thioxanthone or mixtures thereof.

6. The cocure system of claim 1 wherein the heat-activated initiator is selected from methyl ethyl ketone peroxide, benzoyl peroxide, cumene hydroperoxide, azobisisobutyronitrile, tert-butyl perbenzoate, lauroyl peroxide, or mixtures thereof.144901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT7. A cocure system comprising:- 5.0 to 40.0 wt% of a polyol;- 56.0 to 94.8 wt% of a resin component; and0.2 to 4.0 wt% of an initiator system for room-temperature curing comprising an initiator and a promotor, wherein the initiator is selected from methyl ethyl ketone peroxide, benzoyl peroxide, cumene hydroperoxide, azobisisobutyronitrile, tert-butyl perbenzoate, lauroyl peroxide, or mixtures thereof, and the promotor is selected from cobalt compounds selected from cobalt naphthenate or cobalt octoate, or amine compounds selected from N,N-Dimethylaniline (DMA), N,N-Diethylaniline (DEA) or mixtures thereof, for curing the polyol and resin components without the use of an isocyanate component, based on the total weight of the polyol, resin component and initiator system. wherein when the initiator is benzoyl peroxide the promotor is the amine compound, and when the initiator is methyl ethyl ketone peroxide the promotor is the cobalt compound.

8. The cocure system of claim 1 wherein the initiator is a single-component system selected from only the heat-activated initiator or the UV-activated initiator.

9. The cocure system of claim 1 wherein the initiator is a two-component system comprising the UV-activated initiator and the heat-activated initiator wherein the UV initiator triggers an initial reaction, and the heat-activated initiator subsequently triggers a cascading curing process.

10. The cocure system of claim 7 further comprising a UV-activated initiator, wherein the UV-initiator triggers an initial reaction and initiator system triggers a cascading curing process.1 1 .The cocure system of claim 1 wherein the polyol is an aliphatic or aromatic polyol.154901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT12. A method for curing comprising:- mixing a composition comprising a polyol, a resin component and a UV- activated initiator, thereby forming a mixture; and- exposing the mixture to LIV light to achieve a single-component curing, without the use of an isocyanate component.

13. A method for curing comprising:- mixing a composition comprising a polyol, a resin component and a heat- activated initiator, thereby forming a mixture; and- heating the mixture to achieve a single-component curing, without the use of an isocyanate component.

14. A method for curing comprising:- mixing a composition comprising a polyol, a resin component and an initiator system for room-temperature curing at a temperature of 60°F to 100°F, without the use of an isocyanate component.

15. A method for producing a laminated article comprising applying a cocure system to an article or a molded article in a mold, wherein the cocure system is selected from: (1 ) a cocure system comprising 5.0 to 40.0 wt% of a polyol; 56.0 to 94.8 wt% of a resin component; and 0.2 to 4.0 wt% of an initiator selected from a UV-activated initiator, a heat-activated initiator or mixtures thereof, for curing the polyol and resin components without the use of an isocyanate component or (2) a cocure system comprising 5.0 to 40.0 wt% of a polyol; 56.0 to 94.8 wt% of a resin component; and 0.2 to 4.0 wt% of an initiator system for room-temperature curing comprising an initiator and a promotor, wherein the initiator is selected from methyl ethyl ketone peroxide, benzoyl peroxide, cumene hydroperoxide, azobisisobutyronitrile, tert-butyl perbenzoate, lauroyl peroxide, or mixtures thereof, and the promotor is selected from cobalt compounds selected from cobalt naphthenate or cobalt octoate, or amine compounds selected from N,N- Dimethylaniline (DMA), N,N-Diethylaniline (DEA) or mixtures thereof, for curing the164901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT polyol and resin components without the use of an isocyanate component, wherein when the initiator is benzoyl peroxide the promotor is the amine compound, and when the initiator is methyl ethyl ketone peroxide the promotor is the cobalt compound, based on the total weight of the polyol, resin component and initiator or initiator system.

16. The method for producing a laminated article according to claim 15, wherein the cocure system further comprises a wax.

17. A coating, laminating resin, putty or adhesive comprising the CoCured resin of claim 1 .

18. A method to produce a coating, laminating resin, putty or adhesive comprising mixing the CoCured resin of claim 1 with an additive, filler, or modifier.

19. A cocure system comprising:- 5.0 to 40.0 wt% of a polyol;- 56.0 to 94.8 wt% of a resin component; and- 0.2 to 4.0 wt% of an initiator system for room-temperature curing at 60 to 100°F, comprising an initiator and a promotor, wherein the initiator is selected from methyl ethyl ketone peroxide, benzoyl peroxide, cumene hydroperoxide, azobisisobutyronitrile, tert-butyl perbenzoate, lauroyl peroxide, or mixtures thereof, and the promotor is selected from cobalt compounds selected from cobalt naphthenate or cobalt octoate, or amine compounds selected from N,N-Dimethylaniline (DMA), N,N-Diethylaniline (DEA) or mixtures thereof, for curing the polyol and resin components without the use of an isocyanate component, based on the total weight of the polyol, resin component and initiator system, wherein the composition does not contain a UV initiator or a heat-activated initiator.4901 -3237-7945, v. 1Attorney Docket No. 134-P0005PCT20. A cocure system consisting of:- 5.0 to 40.0 wt% of a polyol;- 56.0 to 94.8 wt% of a resin component; and- 0.2 to 4.0 wt% of an initiator system for room-temperature curing at 60 to 100°F, comprising an initiator and a promotor, wherein the initiator is selected from methyl ethyl ketone peroxide, benzoyl peroxide, cumene hydroperoxide, azobisisobutyronitrile, tert-butyl perbenzoate, lauroyl peroxide, or mixtures thereof, and the promotor is selected from cobalt compounds selected from cobalt naphthenate or cobalt octoate, or amine compounds selected from N,N-Dimethylaniline (DMA), N,N-Diethylaniline (DEA) or mixtures thereof, for curing the polyol and resin components without the use of an isocyanate component, based on the total weight of the polyol, resin component and initiator system. wherein the composition does not contain an additional LIV initiator or a heat-activated initiator.4901 -3237-7945, v. 1

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