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WO2024155470A1 - Système de revêtement intumescent à deux composants - Google Patents

Système de revêtement intumescent à deux composants Download PDF

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Publication number
WO2024155470A1
WO2024155470A1 PCT/US2024/010799 US2024010799W WO2024155470A1 WO 2024155470 A1 WO2024155470 A1 WO 2024155470A1 US 2024010799 W US2024010799 W US 2024010799W WO 2024155470 A1 WO2024155470 A1 WO 2024155470A1
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WO
WIPO (PCT)
Prior art keywords
coating composition
component
intumescent
liquid
intumescent coating
Prior art date
Application number
PCT/US2024/010799
Other languages
English (en)
Inventor
Jakub WAWRZYCZEK
Simon Butterfield
Original Assignee
Swimc Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swimc Llc filed Critical Swimc Llc
Publication of WO2024155470A1 publication Critical patent/WO2024155470A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C09D5/185—Intumescent paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/02—Inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/02—Inorganic materials
    • C09K21/04—Inorganic materials containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/06—Organic materials
    • C09K21/12—Organic materials containing phosphorus

Definitions

  • the present invention relates to liquid intumescent coating compositions that have particular, but not exclusive, application in protecting steel structures in a fire situation, and that can be applied using a single leg spray apparatus or system.
  • Intumescent coating compositions are commonly used to protect structural steel components in buildings against the effects of cellulosic fire conditions. They contain a resin system “pigmented” with various intumescent ingredients that under the influence of heat, react together to produce an insulating foam or “char”, having low thermal conductivity, which has a volume many times that of the original coating.
  • This char greatly reduces the rate of heating experienced by the steel, thus extending the time before the steel loses its integrity and the building collapses, thereby allowing additional time for safe evacuation.
  • a steel structure will heat up, the rate of heating depending on the specific dimensions of the steel sections used in the structure. The rate of heating is dependent on the Hp/A value of the section, where Hp is the perimeter of the steel when viewed in cross-section, and A is the cross-sectional area.
  • Hp is the perimeter of the steel when viewed in cross-section
  • A is the cross-sectional area.
  • a steel section with a large perimeter (Hp) will receive more heat than one with a smaller perimeter.
  • the greater the cross-sectional area (A) the more heat the steel section can absorb.
  • the thickness of the coating that is applied depends on the Hp/A value of the steel, its configuration, and the level of fire protection required. The latter is typically specified from 30 minutes to 120 minutes, this being the time taken for the steel to reach its critical failure temperature (550° C.) under standard test conditions.
  • the dry film thickness of intumescent coating applied varies from 250 ⁇ m to several millimeters, depending on the level of fire protection required. With solvent based or water based prior art intumescent coatings, the higher dry film thicknesses can only be achieved by the application of multiple coats.
  • Prior art intumescent coatings designed for cellulosic fire protection tend to be based on high molecular weight thermoplastic resins based on acrylate, methacrylate and/or vinyl chemistry and require a high proportion of organic solvent or water to facilitate application to the substrate to be fire protected. This leads to slow and often protracted drying times, especially when high wet film thicknesses are applied (up to 2 mm per coat), since the rate of drying is dependent on the evaporation of the carrier solvent. Increasingly stringent legislation concerning organic solvent emissions has meant greater use of water based products but slow drying remains a problem, particularly when the relative humidity is high.
  • liquid intumescent coating compositions comprising a resin system comprising at least one polymeric component, at least one ethylenically unsaturated monomeric component, an inhibitor component, and at least one intumescent ingredient, the coating composition being curable to a solid state by free radical polymerization, preferably on initiation by organic peroxide.
  • a method of curing a liquid intumescent coating composition to a solid state by free radical polymerization comprising the step of adding an initiator, preferably organic peroxide, to the liquid intumescent coating composition, wherein the coating composition comprise at least one polymeric component, at least one ethylenically unsaturated monomeric component and at least one intumescent ingredient.
  • an initiator preferably organic peroxide
  • the coating composition comprise at least one polymeric component, at least one ethylenically unsaturated monomeric component and at least one intumescent ingredient.
  • the polymeric component includes a solid thermoplastic resin and at least one ethylenically unsaturated monomeric component along with an inhibitor component, and an intumescent ingredient.
  • a second pack includes at least a peroxide inhibitor. The first and second parts are mixed to form a mixture. A reaction is initiated to cure the composition to a solid state by free radical polymerization, and the formed mixture may be applied to a substrate by a single-leg process.
  • the liquid intumescent coating composition may comprise one or more solid components.
  • DETAILED DESCRIPTION [0017] The present description provides a liquid intumescent coating composition that can be applied by a single-leg process or system.
  • the present description provides a quick-drying coating composition in that the initiator initiates the conversion of the intumescent coating composition into a solid state via a free-radical polymerization reaction.
  • the present invention provides a two-pack composition where the polymeric (reactive) components are present together in a first pack while the initiator is in a second pack and initiates the conversion of the intumescent coating composition into a solid state via a free-radical polymerization reaction. Pot life concerns from the use of the reactive monomers in a single pack are addressed by the inclusion of an inhibitor along with the polymeric component in the first pack.
  • the fact that the coating dries by free radical polymerization, as opposed to solvent evaporation also has the added benefit of giving rise to much higher “solids” content of the coating, i.e. typically 90-100% of the applied wet coating becomes dry coating on the substrate, compared to typical prior art coatings where only 60-80% of the applied film thickness remains in the dry film.
  • the coating has particular, but not exclusive application in the coating of steel structures to provide protection against fire by forming an intumescent and insulating char.
  • the coatings described herein are particularly suitable for on-site application by single-leg spray systems, but may be used for in-shop application as well.
  • the present invention utilizes free radical cure and comprises at least one solid thermoplastic polymeric resin component, combined with lower molecular weight liquid monomeric (or oligomeric components) containing ethylenically unsaturated double bonds.
  • the ethylenically unsaturated double bonds are present as alpha-beta ethylenically unsaturated carboxylate ester groups such as methacrylate or acrylate groups.
  • the solid thermoplastic polymer is preferably a (meth)acrylic resin, either as a homopolymer, copolymer or terpolymer.
  • the polymeric component ideally comprises a meth(acrylate) copolymer.
  • This may be produced from the polymerization of one or more methacrylate and acrylate monomers, such as any of the following: methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, 2- hydroxy ethyl methacrylate, 2-hydroxy propyl methacrylate, 2-ethylhexyl methacrylate and the corresponding acrylates.
  • Co-reactants may include styrene and vinyl toluene.
  • the preferred solid thermoplastic polymer is a copolymer of butyl methacrylate and methyl methacrylate.
  • solid thermoplastic polymeric resin component examples include homopolymers, copolymers or terpolymers derived from vinyl monomers such as any of the following: styrene, vinyl toluene, vinyl chloride, vinyl acetate, vinylidine chloride and vinyl versatate esters. Co-reactants may include dienes such as butadiene.
  • the solid thermoplastic resin preferably constitutes from 10% to 50% by weight of the resin components of the coating composition.
  • At least one of the liquid monomeric components preferably contains methacrylate functionality, and most preferably are methacrylic acid esters.
  • at least one of the monomeric components contains acrylate functionality, and most preferably comprise acrylic acid esters.
  • Suitable methacrylic acid esters and acrylic acid esters include any of the following either alone or in combination: methyl methacrylate, ethyl methacrylate, n- butyl methacrylate, isobutyl methacrylate t-butyl methacrylate, 2-ethylhexyl methacrylate, and the corresponding acrylates.
  • Methyl methacrylate is most preferred methacrylic acid ester due to its ability to produce low viscosity solutions of the solid thermoplastic resin component and its high glass transition temperature. However, its high volatility and characteristic odor, may for certain applications mean that alternative methacrylic acid esters may be preferable.
  • the most preferred acrylic acid ester is 2- ethylhexyl acrylate.
  • the liquid monomeric components preferably constitute from 30% to 90% by weight of the resin components of the coating composition.
  • Proprietary resin solutions containing both the aforementioned solid resin and liquid monomers may also contain oligomeric components.
  • the total resin components ideally constitute from 20% to 60% of the coating composition. More preferably the total resin components constitute from 25% to 50% of the coating composition.
  • the polymeric component and liquid monomers are present in a single pack along with at least one inhibitor component.
  • the presence of a small amount of the inhibitor allows the reactive components (additive and base) to be present together in a single pack. This single can then be mixed with a peroxide present in a second pack and sprayed via single leg spray units due to the increase in pot life from use of the inhibitor.
  • the inhibitor is a phenol or phenol derivative.
  • Suitable examples include, without limitation, butylated hydroxytoluene (BHT), tert- butylcatechol (TBC), hydroquinone (HQ), hydroquinone methyl ether (MEHQ), and 2,4- dimethyl-6-tert-butyl phenol (2,4-DiMe-6-tBu phenol), and the like, as well as mixtures or combinations thereof.
  • the phenol inhibitor is BHT.
  • the inhibitor is an aromatic amine or derivative thereof.
  • Suitable examples include, without limitation, benzylamine, aniline, ortho-toluidine, meta-toluidine, para-toluidine, n-methylaniline, N-N'-dimethylaniline, diphenyl and triphenylamine, 1-naphthylamine, 2-naphthylamine, 4-aminophenol, 3-aminophenol, and 2-aminophenol, and the like, as well as mixtures or combinations thereof.
  • the aromatic amine initiator is aniline.
  • the amount of inhibitor is determined by the total volume of the ultimate coating composition or paint.
  • the inhibitor is present in an amount of about 0.01 to 0.1% by weight, preferably 0.02 to 0.05% by weight, based on the total weight of the components in the first pack. In a finished coating composition or paint, the inhibitor is present in an amount of about 100 mg to 650 mg per liter of the composition or paint.
  • One or more initiators present in a second pack are added prior to use to convert the liquid coating to a solid state on the substrate. These are required to initiate the free- radical curing mechanism necessary to convert the monomeric (and oligomeric) components to a solid state.
  • the initiators may be AZO compounds, but are preferably one or more organic peroxides.
  • Suitable classes of organic peroxides include any of the following either alone or in combination: diacyl peroxides, ketone peroxides, peroxyesters, dialkyl peroxides, hydroperoxides and peroxyketals.
  • Diacyl peroxides are preferred, the most preferred peroxide in this class being dibenzoyl peroxide, which may be used in its solid granular form or as a paste with plasticizer. The preferred form of use is as a paste.
  • the organic peroxide composition content is determined by the total resin content, and preferably constitutes from 0.5% to 5% of the total resin content. More preferably the organic peroxide composition constitutes from 1% to 4% of the total resin content.
  • tertiary amine is preferably added to the coating compositions to accelerate the rate of cure, thus allowing the pot-life and curing time to be optimised.
  • Aromatic tertiary amines are preferred, suitable examples include any of the following: N,N-dimethylaniline and N,N-dialkyl-p-toluidine compounds such as N,N-dimethyl-p-toluidine, N,N-bis-(2-hydroxypropyl)-p-toluidine and N,methyl-n-hydroxyethyl-p-toluidine.
  • the most preferred aromatic tertiary amine accelerators are N,N-dimethyl-p-toluidine. and N,N-bis-(2-hydroxypropyl)-p-toluidine.
  • the tertiary amine content is determined by the total resin content, and ideally constitutes from 0.1% to 4% of the total resin content. More preferably the tertiary amine constitutes from 0.25% to 3% of the total resin content.
  • Preferred Azo initiators include any of the following either alone or in combination: 2,2-azobis(-amidinopropane)dihydrochloride, 2,2-azobis(2- methylbutyronitrile), 2,2-azobis(2-methylpropanenitrile), 2,2-azobis(2,4- dimethylpentanenitrile). These are available from Dupont under the trade name of Vazo.
  • the intumescent coating compositions of the present invention also contain specific ingredients that react together under the influence of heat from a fire, to form a protective insulating foam or char. These ingredients should be of low solubility to ensure that the coating has an acceptable level of durability, and maintains its integrity throughout the service life of the coating.
  • the intumescent ingredients used should have a sufficiently small particle size, in order to obtain satisfactory dispersion in the resin components, and thus allow application by spray application methods giving high rates of transfer of the coating to the substrate.
  • the intumescent ingredients preferably consist of three components, an acid source, a carbon source and a spumific or gas source.
  • an inorganic “nucleating agent” should be present and optionally additives, which may be solid or liquid in nature, may be added to aid char formation and strengthen the char.
  • the resin components melt and begin to flow.
  • the acid source usually by decomposition, produces copious amounts of acid which can react with other constituents in the coating.
  • the acid source is ammonium polyphosphate
  • polyphosphoric acids are released which can react with polyhydric alcohols such as pentaerythritol (carbon source) to form polyphosphoric acid esters.
  • the decomposition of these esters leads to the formation of carbon compounds, which together with a blowing agent such as melamine, give rise to a carbon foam or char.
  • the intumescent coating compositions of the present invention ideally contain at least one acid source, examples of which include ammonium polyphosphate, melamine phosphate, magnesium sulphate and boric acid.
  • ammonium polyphosphate The preferred acid source is ammonium polyphosphate.
  • Ammonium polyphosphate can vary in molecular weight (chain length), the lower the molecular weight, the higher the solubility. By having very high molecular weight and a cross-linked structure it is possible to have very low water solubility, though higher thermal stability is observed. Coating ammonium polyphosphate with silane, melamine or melamine formaldehyde is beneficial in further reducing solubility and can also lead to higher loadings due to a reduction in resin absorbing properties. The use of coated ammonium polyphosphate is preferred, and ammonium polyphosphate coated with melamine formaldehyde is most preferred.
  • the acid source preferably constitutes from 35% to 65% by weight of the intumescent ingredients content of the coating composition.
  • the intumescent coating compositions of the present invention ideally contain at least one carbon source, examples of which include polyhydric alcohols such as pentaerythritol, and dipentaerythritol. Starch and expandable graphite are other possible carbon sources.
  • the preferred carbon sources are pentaerythritol and dipentaerythritol or a combination of the two.
  • the carbon source preferably constitutes from 5% to 40% by weight of the intumescent ingredients content of the coating composition.
  • the intumescent coating compositions of the present invention ideally contain at least one gas source, examples of which include any of: melamine, melamine phosphate, melamine borate, melamine formaldehyde, melamine cyanurate, tris-(hydroxyethyl) isocyanurate (THEIC), ammonium polyphosphate or chlorinated paraffin.
  • the resin itself may be a gas source as it undergoes decomposition.
  • the preferred gas source is melamine.
  • the gas source preferably constitutes from 5% to 40% by weight of the intumescent ingredients content of the coating composition.
  • inorganic “nucleating” agents are a preferred ingredient since they promote sites for the intumescent char to form, improve the thermal resistance properties and stability of the intumescent char during a fire.
  • the intumescent coating compositions of the present invention ideally contain at least one nucleating agent, examples of which include titanium dioxide, zinc oxide, aluminium oxide, silica, silicates, heavy metal oxides such as cerium oxide, lanthanum oxide and zirconium oxide, mica and bentonite clay.
  • a preferred nucleating agent is titanium dioxide which also provides opacity to the coating.
  • the nucleating agent preferably constitutes from 1% to 25% by weight of the intumescent ingredients content of the coating composition.
  • Further optional additives may be optionally included as part of the intumescent ingredients to aid char formation and to strengthen the char and prevent char degradation.
  • Such additives include solids such as zinc borate, zinc stannate, zinc hydroxystannate, glass flake, glass spheres, polymeric spheres, fibres (ceramic, mineral, glass/silica based), aluminium hydroxide, antimony oxide, boron phosphate, fumed silica.
  • the total intumescent ingredients ideally constitute from 40% to 85% of the total coating composition.
  • the total intumescent ingredients constitute from 50% to 75% of the total coating composition.
  • Suitable thixotropic additives include organically modified inorganic clays such as bentonite clays, hectorite clays or attapulgite clays, organic wax thixotropes based on castor oil and fumed silica.
  • the most preferred thixotropic additives are wax thixotropes and fumed silicas.
  • the thixotropic additive preferably constitutes from 0% to 2% of the total coating composition. A more preferred level is from 0.05% to 1%.
  • wetting/dispersion additives are usually liquid in form and can be supplied either containing a solvent or be solvent free.
  • a solvent free wetting agent is used, even more preferably a wetting agent with acid functionality is recommended, at levels between 0% to 2% by weight of the intumescent coating composition
  • the components of the intumescent coating compositions are preferably blended together by the coating manufacturer using high speed dispersion equipment, whereby the solid intumescent ingredients are wetted out and dispersed in the resin components. Optional dispersion aids may be incorporated to facilitate this process.
  • the thickness of the coating is ideally at least 250 ⁇ m.
  • the organic peroxide in a second pack Prior to application of the coating the organic peroxide in a second pack is incorporated into the reactive components (polymeric component, liquid ethylenically unsaturated monomer and inhibitor) present in the first pack. This initiates the free radical reactions that will convert the liquid coating to its solid state. Typically, the initiated liquid coating will remain liquid and suitable for application for up to 30 minutes, though this can be modified by varying the quantities of initiator and accelerator in the formulation.
  • Suitable preferred methods of application of the aforesaid compositions include airless spray, brush, roller, trowel and dipping. Airless spray is most preferred. Airless spray pumps having a ratio of 45:1 or greater, and preferably 60:1 are suitable.
  • a minimum air pressure of greater than 60 psi and preferably 80 psi is required, and the compositions are sprayed using a tip size ranging from 0.015 inch and 0.035 inch.
  • some multicomponent intumescent coating compositions are applied by means of a plural component spray system. This can be achieved in two ways, as set out below: - 1. The initiator (peroxide) component of the coating composition and the main (base) component are pumped separately in the correct ratio through fluid lines to a mixing device. This device mixes the two components automatically and then dispenses the mixed homogenous coating down a further fluid line to the spray tip where the coating is applied as per the abovementioned airless spray application. - 2.
  • the second method involves the initial manufacture of two batches of coating.
  • One batch comprises a coating containing no amine accelerators, the other batch comprising a coating containing double the original level of amine accelerators.
  • double the original level of initiator (peroxide) is mixed with the batch containing no amine accelerators.
  • the two components are then mixed in the fluid line by plural component spray equipment, but at a more manageable 1:1 mixing ratio (opposed to approximately 50 to 200:1 previously).
  • the in-line mixed liquid coating will have the right level of amine accelerators and initiator (peroxide).
  • this batch has a much extended use or pot life, typically up to 24 hours thus providing sufficient time to apply all of the mixed material.
  • the coating compositions described herein are intended to be applied by a single-leg spray process.
  • the single-leg spray process is more efficient and cost- effective and the use of a single spray gun and pump means it can be easily and effectively used for on-site application. Instead of the multiple feed lines and mixers necessary for plural component spray application, the single-leg process allows the first pack to be mixed with the second pack right before application and sprayed with a single gun.
  • the coating compositions should be stored under cool conditions, and ideally application should only be carried out under such conditions. Where it is necessary to apply the coating compositions at higher temperatures, then modified formulations that have been adjusted for initiator or accelerator should be used.
  • the coating compositions of the present invention can be applied in liquid form to steel sections up to several meters in length with a gauge thickness typically ranging from 5 mm to 30 mm or greater. Depending on the Hp/A of the steel section coating can be applied at the required thickness to achieve up to 120 minutes fire protection.
  • Steel sections requiring fire protection are normally blast cleaned prior to the application of an intumescent coating to remove millscale and other deposits that may lead to premature failure of the intumescent coating, either on prolonged atmospheric exposure or during a fire situation. In order to prevent deterioration of the blast cleaned surface, particularly where there is a delay in applying the intumescent coating, it is normal practice to apply a primer coating. This is often the case when the intumescent coating is applied on site.
  • primers are coatings based on epoxy, modified epoxy (such as modified with polyvinyl butyral), polyurethane, acrylic, vinyl and chlorinated rubber. Primers based on epoxy are preferred.
  • the thickness of the primer is ideally in the range from 15 microns to 250 microns. Preferably the thickness should be in the range from 25 microns to 100 microns.
  • a topcoat may be applied to the cured intumescent coatings of the present invention, particularly to provide color to exposed steelwork. A topcoat if correctly formulated will also enhance the durability of the intumescent coating compositions. A clear sealer may also be suitable.
  • topcoats are coatings based on epoxy, polyurethane, alkyd, acrylic, vinyl and chlorinated rubber. Topcoats based on polyurethane and acrylic are preferred.
  • the thickness of the topcoat can vary from 15 microns to 250 microns. Preferably the thickness should be in the range from 25 microns to 75 microns, as too high a thickness of topcoat may inhibit the intumescent reactions.
  • EXAMPLES [0072] The invention is illustrated by the following examples. It is to be understood that the particular examples, materials, amounts, and procedures are to be interpreted broadly in accordance with the scope and spirit of the inventions as set forth herein.
  • An exemplary coating composition as described herein may include additional materials in varying concentrations.
  • the composition may further include one or more fillers, wet and dry flow agents, adhesion promoters, and combinations thereof. Unless otherwise specified, all chemicals used are commercially available.
  • EXAMPLE 1 Preparation of Coating Composition [0073] An exemplary formulation of the liquid intumescent coating composition described herein was made by combining ingredients as shown in Table 1 below to form the first part of the composition. A control formulation based on a commercially available intumescent composition that does not include the inhibitor component is also prepared.
  • the first part of the composition is mixed with the second part of the composition, i.e. a peroxide initiator, just before the coating composition is applied.
  • a comparison of the pot life of the control formulation and exemplary formulation can be seen in Figure 1.
  • the addition of the inhibitor to the first part significantly improves the pot life of the exemplary formulation such that it can be efficiently applied by a single leg process. Table 1.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne une composition de revêtement intumescent liquide comprenant un système de résine. Le système de résine comprend au moins un composant polymère, un ou plusieurs composants monomères éthyléniquement insaturés, un inhibiteur et au moins un ingrédient intumescent. La composition de revêtement est fournie sous la forme d'un système à deux composants qui peut être appliqué par l'intermédiaire d'un procédé de pulvérisation à ligne unique et est durcissable à un état solide dans une réaction de polymérisation radicalaire.
PCT/US2024/010799 2023-01-17 2024-01-09 Système de revêtement intumescent à deux composants WO2024155470A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363480232P 2023-01-17 2023-01-17
US63/480,232 2023-01-17

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WO2024155470A1 true WO2024155470A1 (fr) 2024-07-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001335384A (ja) * 2000-05-23 2001-12-04 Hitachi Chem Co Ltd コンクリート保護材料、コンクリート保護層の製造法及び表面処理されたコンクリート
JP2002322374A (ja) * 2001-04-27 2002-11-08 Kanegafuchi Chem Ind Co Ltd 耐火性に優れた発泡型防火性組成物
US20080224105A1 (en) * 2003-06-24 2008-09-18 John Daryl Green Intumescent Coating Compositions
JP2011178913A (ja) * 2010-03-02 2011-09-15 Kaneka Corp 発泡型防火性組成物
JP2012097251A (ja) * 2010-10-04 2012-05-24 Shin-Etsu Chemical Co Ltd 放射線硬化性組成物
WO2021049152A1 (fr) * 2019-09-12 2021-03-18 パナソニックＩｐマネジメント株式会社 Composition de résine ignifuge thermo-expansible et feuille ignifuge thermo-expansible

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001335384A (ja) * 2000-05-23 2001-12-04 Hitachi Chem Co Ltd コンクリート保護材料、コンクリート保護層の製造法及び表面処理されたコンクリート
JP2002322374A (ja) * 2001-04-27 2002-11-08 Kanegafuchi Chem Ind Co Ltd 耐火性に優れた発泡型防火性組成物
US20080224105A1 (en) * 2003-06-24 2008-09-18 John Daryl Green Intumescent Coating Compositions
JP2011178913A (ja) * 2010-03-02 2011-09-15 Kaneka Corp 発泡型防火性組成物
JP2012097251A (ja) * 2010-10-04 2012-05-24 Shin-Etsu Chemical Co Ltd 放射線硬化性組成物
WO2021049152A1 (fr) * 2019-09-12 2021-03-18 パナソニックＩｐマネジメント株式会社 Composition de résine ignifuge thermo-expansible et feuille ignifuge thermo-expansible

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