EP4373868A1 - Isocyanat-epoxy-hybridschaumstoffe mit geringer sprödigkeit und verbesserter haftung - Google Patents
Isocyanat-epoxy-hybridschaumstoffe mit geringer sprödigkeit und verbesserter haftungInfo
- Publication number
- EP4373868A1 EP4373868A1 EP22750819.9A EP22750819A EP4373868A1 EP 4373868 A1 EP4373868 A1 EP 4373868A1 EP 22750819 A EP22750819 A EP 22750819A EP 4373868 A1 EP4373868 A1 EP 4373868A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- isocyanate
- compound
- weight
- groups
- acid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
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- C08G18/003—Polymeric products of isocyanates or isothiocyanates with epoxy compounds having no active hydrogen
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/72—Density
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/0058—≥50 and <150kg/m3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2330/00—Thermal insulation material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
- C08J2203/184—Binary blends of expanding agents of chemical foaming agent and physical blowing agent, e.g. azodicarbonamide and fluorocarbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
Definitions
- the present invention relates to a process for producing an isocyanate-epoxy hybrid foam hybrid foam having a density of 15 to 60 g/l, in which polyisocyanate (a) is combined with at least two compound (b) having at least two isocyanate-reactive hydrogens , at least one, at least two epoxy groups have the compound with an epoxy equivalent weight of 90 to 500 g / eq, (c), at least one, the reaction of at least two isocyanate-reactive hydrogens compound (b) and the epoxy group compound (c) mixed with the polyisocyanates (a) accelerating catalyst (d), chemical and/or physical blowing agents containing formic acid (e), and optionally auxiliaries and additives (f) to form a reaction mixture, the equivalent ratio of isocyanate groups in the polyisocyanate (a ) to epoxide groups in the compound (c) having at least two epoxide groups 1.2: 1 to 5 00:1 and the reaction mixture is reacted to form the foam,
- foams from polyisocyanates and polyepoxides is described, for example, in US Pat. No. 3,793,236, US Pat. No. 4,129,695 and US Pat. This is described in US Pat. No. 3,849,349, for example.
- One advantage of these foams is their high flame resistance.
- KR 102224864 describes an insulation material for liquid gas tanks which is obtained from a foaming mixture containing a 6-functional polyether polyol, an 8-functional polyether polyol, a 3-functional polyether polyol, an aromatic polyester polyol, isocyanate, blowing agent and bisphenol-based epoxide.
- W ⁇ 2004085509 discloses polyisocyanurate epoxy foams with n-pentane as a physical blowing agent.
- US2013324626 discloses polyurethane sandwich elements and their manufacture.
- EP3059270 discloses heat-resistant, isocyanate-epoxy-based foams with high flame retardance. Such foams are obtained by isocyanate, epoxy, one, one to isocyanate-reactive group having catalyst and blowing agent is converted to foam material.
- EP 3259295 discloses that the epoxy-isocyanate foams (EPIC foams) can also be produced without a stopper and still have a high level of flame resistance.
- the quality of the foams produced in this way can be decisively improved if specific blowing agents are used for the production of the EPIC foams.
- the EPIC foam is also preferably produced by reacting the starting materials in the presence of a stabilizer which acts as a stopper.
- NCO isocyanate
- free (unreacted) isocyanate groups in the foam can lead to undesirable aging processes, such as adhesion problems and deterioration of mechanical properties, e.g. embrittlement.
- EP3259294 the conversion of the NCO groups was improved by using carbodiimide structures ( ⁇ 10% by weight).
- EP3259293 discloses the production of such isocyanate-epoxy hybrid foams based on isocyanates and polyepoxides in a one-stage process without subsequent tempering. The foam is produced using an incorporable catalyst that accelerates the isocyanate-epoxide reaction. Nevertheless, these foams still have mechanical properties that are in need of improvement, in particular brittleness that is in need of improvement and adhesion to metals that is in need of improvement, which is particularly relevant in the production of sandwich elements
- the production of composite elements, in particular from metal cover layers and a core made from isocyanate-based foams, often also referred to as sandwich elements, can be carried out discontinuously or continuously, for example on continuously operating double-belt systems.
- the continuous production on Doppelbandanla conditions is currently practiced on a large scale.
- elements for designing the facades of a wide variety of buildings are becoming increasingly important.
- the object of the present invention was therefore to improve the mechanical properties of the isocyanate-epoxy foams, in particular the brittleness, and their adhesion to metals.
- the object of the invention is therefore achieved by an isocyanate-epoxy hybrid foam hybrid foam with a density of 15 to 60 g / l, producible by egg nem method in which polyisocyanate (a) having at least two, at least two isocyanate-reactive hydrogens Compound (b), at least one compound containing at least two epoxy groups and having an epoxy equivalent weight of 90 to 500 g/eq, (c), at least one compound (b) containing at least two isocyanate-reactive hydrogens and the compound (b) containing epoxy groups Ver compound (c) with the polyisocyanates (a) accelerating catalyst (d), chemical and / or physical blowing agents containing formic acid (e), and optionally auxiliaries and additives (f) mixed to form a reaction mixture, the equivalent ratio of isocyanate groups to Epoxy groups from 1.2: 1 to 500: 1 and the reaction mixture to the isocyanate-epoxy Hybrid foam, characterized in that the compound (b) having at least two isocyanate-
- Another object of the invention is a process for the production of isocyanate-epoxy hybrid foams according to the invention and their use in the production of composite elements made of outer layers and a core of isocyanate-epoxy hybrid foam, so-called sandwich elements.
- Metal cover layers such as steel, aluminum or copper sheets, are preferably used as the cover layers.
- the process for producing sandwich panels can be continuous or discontinuous Lich.
- a discontinuous mode of operation can be considered, for example, in the case of start-up processes of the double belt and in the case of composite elements produced by means of presses that operate in a discontinuous manner.
- a continuous application occurs when using double belt systems.
- the reaction mixture is produced, for example, using high or low-pressure technology and is often applied to the lower cover layer by means of oscillating or fixed pouring rakes.
- the upper covering layer is then applied to the fully reacted reaction mixture. This is followed by the final hardening to form the foam, preferably in a double belt.
- Flexible or rigid, preferably rigid, covering layers such as gypsum plasterboard, glass tiles, aluminum foil, aluminum, copper or steel sheets, preferably aluminum foils, aluminum or steel sheets, particularly preferably steel sheets, can be used as the covering layer.
- the cover layers can also be coated, for example with a conventional paint.
- the top layers can be coated or uncoated.
- the cover layers can be pretreated, for example with corona, arc, plasma treatment or other conventional methods.
- the cover layer is transported in the double-belt process preferably at a constant speed of 1 to 60 m/min, preferably 2 to 50 m/min, particularly preferably 2.5 to 30 m/min and in particular 2.5 to 20 m/min.
- the cover layer is in a substantially horizontal position at least from the point at which the foam system is applied.
- the top layer or top layers are preferably unrolled from a roll, optionally profiled, optionally heated, optionally pretreated to increase foamability and optionally coated with adhesion promoters.
- the reaction mixture is preferably cured in the double-belt and finally cut to the desired length.
- Suitable polyisocyanates (a) are the known organic, aliphatic, cycloaliphatic, araliphatic and preferably the aromatic polyfunctional isocyanates. Such polyfunctional isocyanates are known per se or can be prepared by methods known per se. The polyfunctional isocyanates can also be used in particular as mixtures, so that component (a) in this case contains various polyfunctional isocyanates. More functional isocyanates which can be used as polyisocyanates have two (hereinafter referred to as diisocyanates) or more than two isocyanate groups per molecule.
- Alkylene diisocyanates having 4 to 12 carbon atoms in the alkylene radical such as 1,12-dodecanediocyanate, 2-ethyltetramethylene 1,4,2-methylpentamethylene diisocyanate-1,5, tetramethylene 1,4-diisocyanate, and preferably hexamethylene diisocyanate 1.6; cycloaliphatic diisocyanates such as cyclohexane-1,3- and 1,4-diisocyanate and any mixtures of these isomers, 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (IPDI), 2,4- and 2,6-hexahydrotoluylene diisocyanate and the corresponding isomer mixtures, 4,4'-, 2,2'- and 2,4'-dicyclohexylmethane diisocyanate and the corresponding isomer mixtures, and preferably
- MDI 2,2'-, 2,4'- and/or 4,4'-diphenylmethane diisocyanate
- NDI 1,5-naphthylene diisocyanate
- TDI 2,4- and/or 2,6-tolylene diisocyanate
- PPDI 3,3'-dimethyldiphenyl diisocyanate, 1,2-diphenylethane diisocyanate and/or p-phenylene diisocyanate
- Modified polyisocyanates i.e. products which are obtained by chemically reacting polyisocyanates and which have at least two reactive isocyanate groups per molecule, are also frequently used. Particular mention may be made of polyisocyanates containing ester, urea, biuret, allophanate, carbodiimide, isocyanurate, uretdione, carbamate and/or urethane groups, often together with unreacted polyisocyanates
- the polyisocyanates of component (a) particularly preferably contain 2,2'-MDI or 2,4'-MDI or 4,4'-MDI (also referred to as monomeric diphenylmethane or MMDI) or oligomeric MDI, which consists of polynuclear homologues of MDI, which have at least 3 aromatic nuclei and a functionality of at least 3, or mixtures of two or three of the aforementioned diphenylmethane diisocyanates, or crude MDI, which is obtained in the production of MDI, or preferably mixtures of at least one oligomer of MDI and at least one of the aforementioned low molecular weight MDI derivatives 2,2'-MDI, 2,4'-MDI or 4,4'-MDI (also referred to as polymeric MDI).
- the isomers and homologues of MDI are usually obtained by distillation of crude MDI.
- polymeric MDI preferably contains one or more polynuclear condensation products of MDI having a functionality of more than 2, in particular 3 or 4 or 5.
- Polymeric MDI is known and is frequently referred to as polyphenylpolymethylene polyisocyanate.
- the average functionality of a polyisocyanate containing polymeric MDI can vary in the range from about 2.2 to about 4, particularly from 2.4 to 3.8 and particularly from 2.6 to 3.0.
- Such a mixture of MDI-based polyfunctional isocyanates with different functionalities is, in particular, the crude MDI that is obtained as an intermediate product in the production of MDI.
- Polyfunctional isocyanates or mixtures of several polyfunctional isocyanates based on MDI are known and are sold, for example, by BASF Polyurethanes GmbH under the name Lupranat® M20 or Lupranat® M50.
- Component (a) preferably contains at least 70, particularly preferably at least 90 and in particular 100% by weight, based on the total weight of component (a), of one or more isocyanates selected from the group consisting of 2,2'-MDI , 2,4'-MDI, 4,4'-MDI and oligomers of MDI.
- the content of oligomeric MDI is preferably at least at least 20% by weight, more preferably greater than 30% to less than 80% by weight, based on the total weight of component (a).
- Compounds (b) according to the invention comprise at least one polyesterol (b1) with a hydroxyl number of 195 to 400 mg KOH/g, preferably 200 to 300 mg KOH/g and an average nominal functionality of 2 to 4 and at least one polyether polyol (b2). a hydroxyl number of 40 to 80 mg KOH/g, preferably 50 to 70 mg KOH/g and an average nominal functionality of 2.6 to 6.5, preferably 3 to 4.5.
- an average nominal functionality is understood to mean the averaged functionality of the starter compounds.
- Component (b) can also contain chain extenders and/or crosslinking agents (b3) and other compounds that are common in polyurethane chemistry and have at least two isocyanate-reactive hydrogen atoms that do not fall under the definition of compounds (b1) to (b3) fall.
- chain extenders and/or crosslinking agents (b3) and other compounds that are common in polyurethane chemistry and have at least two isocyanate-reactive hydrogen atoms that do not fall under the definition of compounds (b1) to (b3) fall.
- Such further compounds with isocyanate-reactive hydrogen atoms are known and are described, for example, in Kunststoff Handbuch, Volume 7, “Polyurethane” Carl-Hanser-Verlag Kunststoff, 3rd edition, 1993, Chapter 3.1 or 6.1.1.
- component (b) preferably contains less than 20% by weight, particularly preferably less than 10% by weight, based in each case on the total weight of component (b), and in particular contain no other compounds having at least two hydrogen atoms reactive with isocyanate groups.
- the proportion by weight of the polyesterol (b1) in the total weight of polyesterol (b1) and polyetherol (b2) is preferably 40 to 80% by weight, particularly preferably (50 to 75% by weight and in particular 60 to 70% by weight). .
- Suitable polyester polyols (b1) can preferably be prepared from aromatic dicarboxylic acids or mixtures of aromatic and aliphatic dicarboxylic acids, particularly preferably exclusively from aromatic dicarboxylic acids and polyhydric alcohols.
- aromatic dicarboxylic acids instead of the free dicarboxylic acids, it is also possible to use the corresponding dicarboxylic acid derivatives, such as, for example, dicarboxylic acid esters of alcohols having 1 to 4 carbon atoms or dicarboxylic acid anhydrides.
- aromatic dicarboxylic acids or aromatic dicarboxylic acid derivatives used are preferably phthalic acid, phthalic anhydride, terephthalic acid and/or isophthalic acid in a mixture or alone; phthalic acid, phthalic anhydride, terephthalic acid or mixtures of at least 2 of these acids are preferably used. Particularly preferred is the use of terephthalic acid or dimethyl terephthalate, especially terephthalic acid.
- Aliphatic dicarboxylic acids can be subordinated to aromatic dicarboxylic acids Amount to be used in the mixture.
- aliphatic dicarboxylic acids are succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, decanedioic acid, maleic acid and fumaric acid.
- the proportion of the at least difunctional aromatic acid is preferably at least 20% by weight, based on the total weight of the acid component and the alcohol component.
- polyhydric alcohols examples include: ethanediol, diethylene glycol, 1,2- or 1,3-propanediol, dipropylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,10-decanediol, glycerol, Trimethylolpropane and pentaerythritol, or their alkoxylates.
- Ethylene glycol, diethylene glycol, propylene glycol, glycerol, trimethylolpropane or their alkoxylates or mixtures of at least two of the polyols mentioned are preferably used.
- a polyether alcohol is also used as the polyhydric alcohol, which is a reaction product of glycerol and/or trimethylolpropane with ethylene oxide and/or propylene oxide, preferably with ethylene oxide, the OH number of the polyether alcohol being in the range from 500 to 750 mg KOH/g. This results in improved storage stability of component (b1).
- the aromatic dicarboxylic acids or derivatives thereof and the polyhydric alcohols preferably at least one fatty acid or one fatty acid derivative, preferably one fatty acid, is also used to prepare the polyester polyols (b1).
- the fatty acids can contain hydroxyl groups. Furthermore, the fatty acids can contain double bonds.
- the fatty acid preferably contains no hydroxyl groups.
- the average fatty acid content of components (b1) is preferably greater than 1% by weight, preferably greater than 2.5% by weight, preferably greater than 4% by weight and particularly preferably greater than 5% by weight, based on the weight of component (b1).
- the average fatty acid content of component (b1) is preferably less than 30% by weight, preferably less than 20% by weight, based on the total weight of component (b3).
- the fatty acid or the fatty acid derivative is a fatty acid or a fatty acid derivative based on renewable raw materials selected from the group consisting of castor oil, polyhydroxy fatty acids, ricinoleic acid, hydroxyl-modified oils, grape seed oil, black caraway oil, pumpkin seed oil, borage seed oil, soybean oil, wheat seed oil, rapeseed oil, sunflower seed oil, peanut oil, apricot kernel oil, pistachio oil, almond oil, olive oil, macadamia nut oil, avocado oil, sea buckthorn oil, sesame oil, hemp oil, hazelnut oil, primrose oil, wild rose oil, safflower oil, walnut oil, hydroxyl-modified fatty acids and fatty acid esters based on myristoleic acid, palmitoyleic acid, oleic acid , vaccenic acid, petroselinic acid, gadoleic acid, erucic acid, nervonic acid, linoleic acid, l
- the aliphatic and aromatic polycarboxylic acids and/or derivatives and polyhydric alcohols can be used without a catalyst or preferably in the presence of esterification catalysts, expediently in an atmosphere of inert gas, such as nitrogen, in the melt at temperatures from 150 to 280 ° C, preferably 180 to 260 ° C, optionally under reduced pressure, to the desired acid number, which is advantageously less than 10, preferably less than 2, are polycondensed.
- inert gas such as nitrogen
- the esterification mixture is polycondensed at the temperatures mentioned above up to a hydroxyl number of 400 to 195, preferably 350 to 200, under atmospheric pressure and then under a pressure of less than 500 mbar, preferably 40 to 400 mbar.
- suitable esterification catalysts are iron, cadmium, cobalt, lead, zinc, antimony, magnesium, titanium and tin catalysts in the form of metals, metal oxides or metal salts.
- the polycondensation can also be carried out in the liquid phase in the presence of diluents and/or entrainers, such as benzene, toluene, xylene or chlorobenzene, for azeotropic distillation of the condensation water.
- the polycarboxylic acids and/or derivatives and polyhydric alcohols are advantageously used in a molar ratio of 1:1 to 2.3, preferably 1:1.05 to 2.2 and particularly preferably 1:1.1 to 2 ,1 polycondensed.
- the polyester polyol (b1) preferably has a number-weighted average functionality of greater than or equal to 2, preferably greater than 2, particularly preferably greater than 2.2 and in particular greater than 2.3, resulting in a higher crosslink density of the product made therewith Polyurethane and thus leads to better mechanical properties of the polyurethane foam.
- the number-average functionality of the polyester polyol (b1) is particularly preferably less than 4, in particular less than 3.
- the polyester polyols (b1) obtained generally have a number-average molecular weight of from 250 to 1200 g/mol, preferably from 300 to 1000 g/mol and in particular from 400 to 700 g/mol.
- the polyether alcohols (b2) are usually prepared by addition of alkylene oxides onto H-functional starter substances. This process is well known and common for the manufacture of such products.
- Alcohols or amines can be used as starter substances.
- Aliphatic amines such as ethylenediamine can be used as amines.
- aromatic amines in particular toluenediamine (TDA) or mixtures of diphenylmethanediamine and polyphenylenepolymethylenepolyamines, can be used.
- component b) contains polyetheralcohols based on aliphatic amines, in particular ethylenediamine. More functional alcohols are therefore preferred as H-functional starter substances for the preparation of the polyether alcohols (b1).
- alcohols can also be used as starter molecules.
- examples include glycols such as ethylene glycol or propylene glycol, glycerol, trimethylolpropane, pentaerythritol, and sugar alcohols such as sucrose or sorbitol, for example as mixtures of different alcohols with one another.
- the solid starter substances such as saccharose and sorbitol are often mixed with liquid starter substances such as glycols or glycerol.
- a number-average functionality is chosen as the functionality of the starter substances.
- the polyether (b2) used is exclusively an amine-started polyether.
- Ethylene oxide, propylene oxide or mixtures of these compounds are preferably used as alkylene oxides.
- the use of pure propylene oxide or mixtures of ethylene oxide and propylene oxide is particularly preferred, with ethylene oxide being added towards the end of the reaction, so that ethylene oxide end groups with primary hydroxyl groups are obtained.
- the addition of the alkylene oxides onto the starter substance is preferably carried out in the presence of catalysts.
- Basic compounds are usually used as catalysts, the oxides and in particular the hydroxides of alkali metals or alkaline earth metals being of the greatest industrial importance.
- Potassium hydroxide is usually used as a catalyst.
- amines are used as catalysts for preparing the polyether alcohols (b2). These are preferably amines with at least one tertiary amino group, imidazoles, guanidines or their derivatives. These aminic catalysts preferably have at least one group which is reactive with alkylene oxides, for example a primary or secondary amino group or, particularly preferably, a hydroxyl group.
- Component c) containing epoxide groups is any organic compound containing at least two epoxide groups, such as aliphatic, cycloaliphatic, aromatic and/or heterocyclic compounds, component c) containing epoxide groups having an epoxide equivalent weight of from 90 to 500 g /eq.
- the preferred epoxides suitable as component c) have 2 to 4, particularly preferably 2, epoxide groups per molecule and an epoxide equivalent weight of preferably 95 to 400 g/eq, particularly preferably 140 to 220 g/eq.
- Suitable polyepoxides are, for example, polyglycidyl ethers of polyhydric phenols, for example pyrocatechol, resorcinol, hydroquinone, 4,4'-dihydroxydiphenylpropane (bisphenol A), 4,4'-dihydroxy-3,3'-dimethyldiphenylmethane and 4,4'-dihydroxydiphenylmethane (bisphenol F), 4,4'-dihydroxydiphenylcyclohexane, from 4,4'-dihydroxy-3,3'-dimethyldiphenylpropane, from 4,4'-dihydroxydiphenyl, from 4,4'-dihydroxydiphenyl sulfone (bisphenol S), from tris- (4-Hydroxyphenyl)-methane, the chlorination and bromination products of the above-mentioned diphenols, from novolaks (i.e.
- polyepoxide compounds based on aromatic amines and epichlorohydrin for example N-di-(2,3-epoxypropyl)aniline, N,N'-dimethyl-N,N'-diepoxypropyl-4,4'-diaminodiphenylmethane , N,N-diepoxypropyl-4-amino-phenylglycidyl ether (see GB-PS 772830 and 816923).
- glycidyl esters of polybasic aromatic, aliphatic and cycloaliphatic carboxylic acids for example diglycidyl phthalate, diglycidyl isophthalate, diglycidyl terephthalate, diglycidyl adipate and glycidyl ester of reaction products of 1 mole of an aromatic or cycloaliphatic dicarboxylic acid anhydride and 1/2 mole of a diol or 1 /n moles of a polyol with n hydroxyl groups or hexahydrophthalic acid diglycidyl ester, which may optionally be substituted with methyl groups.
- Glycidyl ethers of polyhydric alcohols for example 1,4-butanediol (Araldite® DY-D, Huntsman), 1,4-butenediol, glycerol, trimethylolpropane (Araldite® DY-T/CH, Huntsman), pentaerythritol and polyethylene glycol can also be used .
- triglycidyl isocyanurate N,N'-diepoxypropyloxyamide
- polyglycidyl thioethers from polyvalent thiols, such as from bismercaptomethylbenzene, diglycidyl trimethylene trisulfone, polyglycidyl ethers based on hydantoins.
- Epoxidation products of polyunsaturated compounds can also be used, such as vegetable oils and their conversion products.
- Epoxidization products of di- and polyolefins such as butadiene, vinylcyclohexane, 1,5-cyclooctadiene, 1,5,9-cyclododecatriene, polymers and copolymers which still contain epoxidizable double bonds, for example based on polybutadiene, polyisoprene, butadiene-styrene Copolymers, divinylbenzene, dicyclopentadiene, unsaturated polyesters, and also epoxidation products from olefins, which are accessible by Diels-Alder addition and are then converted into polyepoxides by epoxidation with a per compound, or from compounds containing two cyclopentene or cyclohexene rings via bridge atoms or bridges containing linked atom groups can also be used.
- Polyglycidyl ethers of polyhydric phenols in particular of bisphenol A (Araldit® GY250, Huntsman; Ruetapox® 0162, Bakelite AG; Epikote® Resin 162, Hexion Specialty Chemicals GmbH; Eurepox 710, Brenntag GmbH; Araldit® GY250, Hunstman, D.E.R.TM 332, The Dow Chemical Company; Epilox® A 18-00, LEUNA-Harze GmbH) or bisphenol F (4,4'-dihydroxydiphenylmethane, Araldit® GY281, Huntsman; Epilox® F 16-01, LEUNA-Harze GmbH; Epilox®
- polyepoxide compounds based on aromatic amines in particular bis(N-epoxypropyl)aniline, N,N'-dimethyl-N,N'-diepoxypropyl-4,4'-diaminodiphenylmethane and N ,N-diepoxypropyl-4-aminophenylglycidyl ether;
- Polyglycidyl ethers of bisphenol A and bisphenol F and novolaks or mixtures of two or more of these compounds are very particularly preferred, in particular polyglycidyl ethers of bisphenol F.
- Liquid polyepoxides or low-viscosity diepoxides such as bis(N-epoxypropyl)aniline or vinylcyclohexane diepoxide, can in special cases further reduce the viscosity of already liquid polyepoxides or convert solid polyepoxides into liquid mixtures.
- Component (c) is used in an amount which corresponds to an equivalent ratio of isocyanate groups to epoxide groups of from 1.2:1 to 500:1, preferably from 3:1 to 65:1, in particular from 3:1 to 30:1 3:1 to 15:1.
- the proportion by weight of the compound (c) having at least two epoxide groups to the total weight of the compound (c) having at least two epoxide groups and the compound (b) having at least two isocyanate-reactive hydrogens is preferably 35 to 80% by weight, particularly preferably 40 to 70% by weight and in particular 45 to 60% by weight.
- Catalysts (d) greatly accelerate the reaction of the compound (b) containing at least two isocyanate-reactive hydrogens and the compound (b) containing epoxide groups with the polyisocyanates (a).
- Catalysts (d) preferably have at least one catalyst that can be incorporated.
- Catalysts (d1) which can be installed have at least one, preferably 1 to 8 and particularly preferably 1 to 2, groups which are reactive towards isocyanates, such as primary amine groups, secondary Amine groups, hydroxyl groups or urea groups.
- Catalysts which can be installed in the present invention and which have at least one tertiary amine group are not regarded as compounds (b) having at least two isocyanate-reactive hydrogens, but as catalysts (d).
- the amine catalysts which can be installed preferably have primary amine groups, secondary amine groups and/or hydroxyl groups.
- the amine catalysts which can be installed have at least one tertiary amino group in addition to the group or groups which are reactive toward isocyanates.
- at least one of the tertiary amino groups of the catalysts that can be incorporated carries at least two aliphatic hydrocarbon radicals, preferably having 1 to 10 carbon atoms per radical, more preferably having 1 to 6 carbon atoms per radical ethyl radical and another organic radical.
- catalysts that can be incorporated are, for example, bisdimethylaminopropylurea, bis(N,N-dimethylaminoethoxyethylcarbamate, dimethylaminopropylurea, N,N,N-trimethyl-N-hydroxyethylbis(aminopropyl ether), N,N,N-trimethyl N-hydroxyethylbis(aminoethyl ether), diethylethanolamine, bis(N,N-dimethyl-3-aminopropyl)amine, dimethylaminopropylamine, 3-dimethylaminopropyl-N,N-dimethylpropane-1,3-diamine, dimethyl-2-( 2-aminoethoxyethanol) and (1,3-bis(dimethylamino)propan-2-ol), N,N-bis(3-dimethylaminopropyl)-N-isopropanolamine, bis(dimethylaminopropyl
- amine catalysts such as are also known for the production of polyurethanes
- amidines such as 2,3-dimethyl-3,4,5,6-tetrahydropyrimidine
- tertiary amines such as triethylamine, tributylamine, triethylenediamine, dimethylcyclohexylamine, dimethyloctylamine, N,N-dimethylbenzylamine, N-methyl-, N-ethyl -, N-Cyclohexylmorpholine, N,N,N',N'-Tetramethylethylenediamine, N,N,N',N'-Tetramethylbutanediamine, N,N,N',N'-Tetramethylhexanediamine, Pentamethyldiethylenetriamine, Tetramethyl diaminoethyl ether, bis(N,N-dimethyl)-2-dimethyl-2-dimethyl-2-dimethylbenzylamine, N-methyl-, N-e
- pentamethyl-diethylenetriamine N-methyl-N'-dimethylaminoethyl-piperazine, N,N-diethylethanolamine and silamorpholine
- boron trichloride tert-amine adducts and N-[3-(dimethylamino)propyl]formamide.
- catalysts are used in addition to catalysts that can be installed, these preferably contain boron trichloride-tertiary amine adducts, N,N-dimethylbenzylamine and/or N,N-methyldibenzylamine and/or boron trichloro(N,N-dimethyloctylamine.
- Catalysts (d) are preferably used in a concentration of 0.001 to 8% by weight, particularly preferably 0.6 to 6% by weight, more preferably 1.5 to 5% by weight and in particular 2.1 to 5% by weight .-% as catalyst or catalyst combination, based on the total weight of components (a), (b), (c) and (d), used.
- the chemical and/or physical blowing agents (e) used to produce the foams according to the invention contain formic acid, optionally mixed with other blowing agents.
- formic acid and optionally water phospholine oxide can be used as a chemical blowing agent.
- phospholine oxide can be used as a chemical blowing agent.
- These chemical blowing agents react with isocyanate groups to form carbon dioxide and, in the case of formic acid, to form carbon dioxide and carbon monoxide. Since these blowing agents release the gas through a chemical reaction with the isocyanate groups, they are referred to as chemical blowing agents.
- physical blowing agents such as low-boiling hydrocarbons can be used.
- liquids which are preferably used are alkanes such as heptane, hexane, n- and iso-pentane, preferably technical mixtures of n- and isopentanes, n- and iso-butane and propane, cycloalkanes such as cyclopentane and/or cyclohexane , Ethers such as furan, dimethyl ether and diethyl ether, ketones such as acetone and methyl ethyl ketone, carboxylic acid alkyl esters such as methyl formate, dimethyl oxalate and ethyl acetate and halogenated hydrocarbons such as methylene chloride, dichloromonofluoromethane
- low-boiling liquids with one another and/or with other substituted or unsubstituted hydrocarbons can also be used.
- organic carboxylic acids such as formic acid, acetic acid, oxalic acid, ricinoleic acid and compounds containing carboxyl groups.
- the physical blowing agents are soluble in component (b).
- blowing agent (e) Preferably less than 2% by weight, more preferably less than 1% by weight, more preferably less than 0.5% by weight and in particular no halogenated hydrocarbons are used as blowing agent (e).
- the proportions by weight are in each case based on the total weight of components (a) to (f).
- Water, formic acid/water mixtures or formic acid are preferably used as chemical blowing agents; formic acid/water mixtures or formic acid are particularly preferred chemical blowing agents.
- the chemical blowing agents can be used alone, ie stuffs without the addition of physical blowing agents, or together with physical blowing agents. Preferably the chemical blowing agents are used alone. If chemical blowing agents are used together with physical blowing agents, preference is given to using pure water, formic acid/water mixtures or pure formic acid together with pentane isomers or mixtures of pentane isomers. In a particularly preferred embodiment, formic acid is the sole blowing agent.
- Auxiliaries and additives (e) which can be used are, for example, fillers such as quartz powder, chalk, Microdol, aluminum oxide, silicon carbide, graphite or corundum; pigments such as titanium dioxide, iron oxide or organic pigments such as phthalocyanine pigments; Plasticizers such as dioctyl phthalate, tributyl or triphenyl phosphate; incorporable compatibility agents such as methacrylic acid, ß-hydroxypropyl ester, maleic acid and fumaric acid ester; Substances improving flame retardancy such as red phosphorus or magnesium oxide; soluble dyes or reinforcing materials such as glass fibers or glass fabrics are used.
- fillers such as quartz powder, chalk, Microdol, aluminum oxide, silicon carbide, graphite or corundum
- pigments such as titanium dioxide, iron oxide or organic pigments such as phthalocyanine pigments
- Plasticizers such as dioctyl phthalate, tributyl or triphenyl
- metallic fillers such as aluminum, copper, iron and/or steel. The metallic fillers are used in particular in granular form and/or powder form.
- auxiliaries and additives (e) that may also be used are polymerizable, olefinically unsaturated monomers, which are present in amounts of up to 100% by weight, preferably up to 50% by weight, in particular up to 30% by weight, based on the total weight of the components th a), b) and c) can be used.
- additives of polymerizable, olefinically unsaturated monomers are those which do not have any hydrogen atoms which are reactive towards NCO groups, such as diisobutylene, styrene, CrC4-alkylstyrenes such as a-methylstyrene, a-butylstyrene, vinyl chloride, vinyl acetate, maleimide derivatives such as e.g.
- olefinically unsaturated monomers having hydrogen atoms which are reactive toward NCO groups such as hydroxyethyl methacrylate, hydroxypropyl methacrylate and aminoethyl methacrylate.
- olefinically unsaturated monomers having hydrogen atoms which are reactive towards NCO groups are not regarded as compounds (b).
- any mixtures of such olefinically unsaturated monomers can also be used.
- Styrene and/or (meth)-acrylic acid C 1 -C 4 -alkyl esters are preferably used, provided that the olefinically unsaturated monomers are used at all.
- classic polymerization initiators such as benzoyl peroxide is possible, but generally not necessary.
- the auxiliaries and additives e) can also contain known foam stabilizers of the polyethersiloxane type, mold release agents, e.g. polyamide waxes and/or stearic acid derivatives and/or natural waxes, e.g. carnauba wax.
- mold release agents e.g. polyamide waxes and/or stearic acid derivatives and/or natural waxes, e.g. carnauba wax.
- the auxiliaries and additives e) can either be incorporated into the starting materials a) and b) before the process according to the invention is carried out or only added later.
- the starting materials a), b) and c) can be mixed with one another.
- further auxiliaries and additives e), the catalyst c) and blowing agent (d) are added to the reaction mixture, the whole is intimately mixed and the foamable mixture is poured into an open or closed mold.
- the two-component process can be used, in which an isocyanate component (B) containing polyisocyanates (a) is mixed with one another with an isocyanate-reactive component (A) containing compounds (b) and (c).
- the other components (d) to (f) can be added to one of the components, preferably to the isocyanate-reactive component (A).
- the process is characterized by a high level of flexibility.
- different qualities of foam can be produced with one and the same starting materials.
- different components a) and different components b) can also be fed directly into the mixing head in different ratios.
- the auxiliaries and additives e), the catalyst c) and propellant d) can be fed into the mixing head separately or as a batch. It is also possible to meter in the auxiliaries and additives e) together with the catalyst c) and to meter in the blowing agents d) separately.
- Foams with different bulk density ranges can be produced by varying the amount of blowing agent.
- the components are mixed in one stage (so-called “one-shot” process).
- the reaction should particularly preferably be carried out without the pretrimerization step.
- the production process can be continuous or discontinuous.
- the ratio of isocyanate groups of the compounds of component (a) to isocyanate-reactive groups of component (b) is preferably greater than 1.8:1, particularly preferably 1.8 to 4.0:1, more preferably 2.0 to 3 .0 to 1 and especially 2.0 to 2.5 to 1.
- the blowing process generally begins after a lying time of 2 s to 4 min and is usually completed after 2 min to 8 min.
- the foams are finely divided and uniform.
- the isocyanate-epoxy hybrid foam according to the invention preferably has a density of 15 to 60 g/l, particularly preferably 20 to 40 and in particular 25 to 35.
- the starting components are preferably mixed at a temperature of from 15 to 90.degree. C., particularly preferably from 20 to 60.degree. C. and in particular from 20 to 45.degree.
- the reaction mixture can be poured into closed supporting molds using high or low-pressure metering machines. Discontinuous sandwich elements, for example, are manufactured using this technology. Subsequent heat treatment of the foams according to the invention is not necessary. In the preferred embodiment, the foams are not annealed.
- Overfilling means filling in an amount of foamable mixture which, in an open mold, when fully foamed, would occupy a volume greater than the internal volume of the mold.
- the rigid foams according to the invention are preferably produced on continuously operating double-belt systems.
- the polyol and isocyanate components are preferably metered using a high-pressure machine and mixed in a mixing head. Catalysts and/or blowing agents can be metered into the polyol mixture beforehand using separate pumps.
- the reaction mixture is applied continuously to the lower cover layer.
- the lower cover layer with the reaction mixture and the upper cover layer run into the double belt, in which the reaction mixture foams and hardens.
- the endless strand is cut into the desired dimensions. In this way, sandwich elements with metallic cover layers or insulating elements with flexible cover layers can be produced.
- the foams according to the invention have low thermal conductivity, very good mechanical properties, such as high compressive strength and a high compressive modulus of elasticity, and low brittleness. Furthermore, the foams according to the invention are flame-retardant and develop little heat and smoke when burned. They have low dielectric losses, moisture resistance and abrasion resistance as well as processability in molds are excellent.
- the foams according to the invention are therefore excellently suitable as filling foam for cavities, as filling foam for electrical insulation, as the core of sandwich constructions, for the production of construction materials for interior and exterior applications of all kinds, for the production of construction materials for vehicle, ship and , aircraft and rocket construction, for the manufacture of aircraft interior and exterior components, for the manufacture of insulation materials of all kinds, for the manufacture of insulation panels, pipe and container insulation, for the manufacture of sound-absorbing materials, for use in engine compartments, for the manufacture of grinding wheels and for the manufacture of High-temperature insulation and flame-retardant insulation.
- the use as a core foam of sandwich elements is particularly preferred, with sandwich elements being obtained with a particularly small number of cavities and excellent adhesion between the foam layer and the cover layer.
- a further subject of the present invention is therefore a sandwich element containing an isocyanate-epoxy hybrid foam according to the invention.
- the starting materials of the A component were added to one another in the following order according to Table 1 (data in parts by weight) with the specified isocyanate index.
- the epoxy resin, polyol and water were mixed together.
- the catalyst mixture was added and stirred.
- the chemical blowing agent and the physical blowing agent were added to the component.
- the A component is intensively mixed with the specified amount of isocyanate component using a laboratory stirrer (Vollrath stirrer) at a stirring speed of 1850 rpm and a stirring time of 3 seconds in a beaker and foamed in this.
- a laboratory stirrer Vollrath stirrer
- the starting, setting and rising times, the raw density and, if applicable, the brittleness are determined.
- 2.5 liter buckets with a weight of 150 g were produced.
- Polyesterol 1 Polyester based on terephthalic acid, diethylene glycol, oleic acid and a polytherol based on glycerol and ethylene oxide with an OH number of 242 mg KOH/g
- Polyesterol 2 Polyester based on adipic acid, isophthalic acid, 1,4-butanediol and monoethylene glycol with an OH number of 55 mg KOH/g.
- Polyetherol ethylenediamine-started polyetherpolyol based on ethylene oxide and propylene oxide with an OH number of 60 mg KOH/g.
- TEP triethyl phosphate
- TOPP Tris(2-chloroisopropyl)phosphate
- Epoxy 1 Leuna, Epilox® A 18-00, low-molecular epoxy resin based on bisphenol A, commercial product from LEUNA-Harze GmbH, Leuna/Germany, epoxy equivalent of 178-185 g/eq according to DIN 16945, viscosity at 25°C 8000 up to 10000 mPas according to DIN 53015.
- Stabilizer silicone stabilizer Tegostab® B 8498, polyetherpolysiloxane, commercial product from Evonik, Essen, Germany.
- Formic Acid 85% by weight formic acid in water
- Catalyst Catalyst mixture of diethyltoluenediamine, N,N,N'-trimethylaminoethylethanolamine, triethylenediamine and bis(2-dimethylaminoethyl)methylamine
- Additive 1 A mixture of water, dipropylene glycol and glycerin with an OHN of 425 mg/KOH g
- Isocyanate polymeric methylenediphenyl diisocyanate (PMDI), with a viscosity of approx. 500 mPa*s at 25 °C. Determination of the raw density in a manual test (cup test):
- the bulk density of the foam is determined by separating the foam above the edge of the cup and then weighing the cup and the remaining foam. This mass, minus the mass of the empty cup (measured before foaming), divided by the volume of the cup (0.735 L) gives the bulk density.
- the brittleness of the laboratory foams was determined using ASTM C421(08) 2014. First, twenty-four room-dried oak cubes (19 mm) are placed in a cubic box made of oak (190 x 197 x 197 mm). The foam is cut into twelve small cubes (2.5 mm) using a fine-tooth saw. These specimens are weighed with a precision balance (M1) and placed in the testing apparatus with the oak cubes. The box is rigidly mounted in the center so that the axis is normal to a face of the box that is a rotatable shaft. The box spins at 60 ⁇ 2 rpm for 600 ⁇ 3 turns. After the defined test phase, the twelve pieces of foam are carefully removed from the box. Dust and particle residues are removed from the samples and then weighed again (M2). Mass loss is calculated using the following equations:
- Mass loss (%) [(Mi - M 2 )/M I ] * 100
- the tensile strength test was carried out according to DIN EN ISO 14509-1/EN 1607 thermal conductivity:
- a block of foam is stored for 24 hours under standard conditions.
- the test piece is then cut in the middle of the foam block (i.e. the top and bottom are removed) and has the dimensions 200 x 200 x 30 mm.
- the thermal conductivity is then determined using a Hesto A50 heat flow meter at a mean temperature of 10 °C.
- the compressive strength is determined according to DIN 53421/DIN EN ISO 604.
- Table 1 shows that in the inventive combination of polyester with an OH number of 195 to 400 mg KOH / g and a functionality of 2 to 4 and polyether with an OH number of 40 to 80 mg KOH / g and a functionality of 2.6 to 6.5 with the same density and comparable index, foams with improved tensile strength and reduced thermal conductivity can be obtained.
- example 2
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21187200 | 2021-07-22 | ||
| PCT/EP2022/069757 WO2023001686A1 (de) | 2021-07-22 | 2022-07-14 | Isocyanat-epoxy-hybridschaumstoffe mit geringer sprödigkeit und verbesserter haftung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4373868A1 true EP4373868A1 (de) | 2024-05-29 |
Family
ID=77021270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22750819.9A Withdrawn EP4373868A1 (de) | 2021-07-22 | 2022-07-14 | Isocyanat-epoxy-hybridschaumstoffe mit geringer sprödigkeit und verbesserter haftung |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20250002633A1 (de) |
| EP (1) | EP4373868A1 (de) |
| JP (1) | JP2024525908A (de) |
| KR (1) | KR20240036654A (de) |
| CN (1) | CN117677646A (de) |
| BR (1) | BR112024001164A2 (de) |
| CA (1) | CA3227034A1 (de) |
| MX (1) | MX2024000995A (de) |
| WO (1) | WO2023001686A1 (de) |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB816923A (en) | 1954-12-06 | 1959-07-22 | Bayer Ag | Process for the production of basic n,n-diepoxides |
| DE1011618B (de) | 1954-12-06 | 1957-07-04 | Bayer Ag | Verfahren zur Herstellung basischer Diepoxydharze |
| US3242108A (en) | 1961-04-04 | 1966-03-22 | Union Carbide Corp | Compositions for producing polyurethane resins and resinous foams and products prepared therefrom |
| DE1222076C2 (de) | 1962-02-03 | 1976-01-15 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von diepoxiden |
| CH448513A (de) | 1963-11-14 | 1967-12-15 | Bayer Ag | Verfahren zur Herstellung von geformten Gebilden auf Basis von Epoxydharzen |
| US3793236A (en) | 1971-02-12 | 1974-02-19 | Mitsubishi Chem Ind | Oxazolidone-modified isocyanurate resins |
| US3849349A (en) | 1971-05-12 | 1974-11-19 | K Frisch | Polyisocyanurate foam and process for producing the same |
| US4129695A (en) | 1974-11-20 | 1978-12-12 | Rhone-Poulenc Industries | Process for preparing foams from polyisocyanates and polyepoxides |
| WO2004085509A1 (en) | 2003-03-24 | 2004-10-07 | Solvay (Société Anonyme) | Process for the manufacture of foams composed of polyurethane or of modified polyurethane |
| ES2549442T3 (es) | 2010-12-15 | 2015-10-28 | Bayer Intellectual Property Gmbh | Espumas estables a altas temperaturas |
| EP2705076A2 (de) | 2011-05-02 | 2014-03-12 | Bayer Intellectual Property GmbH | Hochtemperaturbeständige schaumstoffe mit geringer wärmeleitfähigkeit |
| US20130324626A1 (en) | 2012-05-30 | 2013-12-05 | Basf Se | Producing rigid polyurethane foams |
| EP3259294B1 (de) | 2015-02-20 | 2019-12-18 | Covestro Deutschland AG | Hochtemperaturbeständige schaumstoffe |
| WO2016131880A1 (de) | 2015-02-20 | 2016-08-25 | Covestro Deutschland Ag | Hochtemperaturbeständige schaumstoffe mit hoher flammwidrigkeit |
| EP3059270A1 (de) | 2015-02-20 | 2016-08-24 | Basf Se | Temperaturbeständige Schaumstoffe auf Isocyanatbasis mit hoher Flammwidrigkeit |
| US10131758B2 (en) * | 2016-07-25 | 2018-11-20 | Accella Polyurethane Systems, Llc | Polyurethane foam-forming compositions, methods of making low density foams using such compositions, and foams formed therefrom |
| KR102224864B1 (ko) * | 2018-10-05 | 2021-03-08 | 한국조선해양 주식회사 | 발포 조성물과 이의 발포체를 포함하는 단열재, 액화가스 저장탱크 및 선박 |
-
2022
- 2022-07-14 EP EP22750819.9A patent/EP4373868A1/de not_active Withdrawn
- 2022-07-14 US US18/290,590 patent/US20250002633A1/en active Pending
- 2022-07-14 CN CN202280051112.2A patent/CN117677646A/zh active Pending
- 2022-07-14 CA CA3227034A patent/CA3227034A1/en active Pending
- 2022-07-14 KR KR1020247005986A patent/KR20240036654A/ko active Pending
- 2022-07-14 BR BR112024001164A patent/BR112024001164A2/pt not_active Application Discontinuation
- 2022-07-14 WO PCT/EP2022/069757 patent/WO2023001686A1/de not_active Ceased
- 2022-07-14 JP JP2024503685A patent/JP2024525908A/ja active Pending
- 2022-07-14 MX MX2024000995A patent/MX2024000995A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA3227034A1 (en) | 2023-01-26 |
| KR20240036654A (ko) | 2024-03-20 |
| WO2023001686A1 (de) | 2023-01-26 |
| MX2024000995A (es) | 2024-02-13 |
| US20250002633A1 (en) | 2025-01-02 |
| BR112024001164A2 (pt) | 2024-04-30 |
| CN117677646A (zh) | 2024-03-08 |
| JP2024525908A (ja) | 2024-07-12 |
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