WO2011157507A1 - Halbzeug für die herstellung von faserverbundbauteilen auf basis von lagerstabilen polyurethanzusammensetzungen - Google Patents
Halbzeug für die herstellung von faserverbundbauteilen auf basis von lagerstabilen polyurethanzusammensetzungen Download PDFInfo
- Publication number
- WO2011157507A1 WO2011157507A1 PCT/EP2011/058055 EP2011058055W WO2011157507A1 WO 2011157507 A1 WO2011157507 A1 WO 2011157507A1 EP 2011058055 W EP2011058055 W EP 2011058055W WO 2011157507 A1 WO2011157507 A1 WO 2011157507A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- semifinished product
- core structure
- polyurethane composition
- matrix material
- cover layer
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 79
- 239000000835 fiber Substances 0.000 title claims abstract description 70
- 239000004814 polyurethane Substances 0.000 title claims abstract description 66
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 65
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 239000011265 semifinished product Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000011159 matrix material Substances 0.000 claims abstract description 46
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- 125000000524 functional group Chemical group 0.000 claims abstract description 14
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- 125000005442 diisocyanate group Chemical group 0.000 abstract description 5
- PCHXZXKMYCGVFA-UHFFFAOYSA-N 1,3-diazetidine-2,4-dione Chemical group O=C1NC(=O)N1 PCHXZXKMYCGVFA-UHFFFAOYSA-N 0.000 description 25
- 239000003054 catalyst Substances 0.000 description 21
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- 125000001931 aliphatic group Chemical group 0.000 description 12
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- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 10
- -1 4-isocyanatomethyl-1 Chemical compound 0.000 description 9
- 238000004132 cross linking Methods 0.000 description 9
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 8
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- 239000012975 dibutyltin dilaurate Substances 0.000 description 7
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- 125000004432 carbon atom Chemical group C* 0.000 description 4
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- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 4
- OKIZCWYLBDKLSU-UHFFFAOYSA-M N,N,N-Trimethylmethanaminium chloride Chemical compound [Cl-].C[N+](C)(C)C OKIZCWYLBDKLSU-UHFFFAOYSA-M 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 239000003426 co-catalyst Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 3
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
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- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
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- 150000007524 organic acids Chemical class 0.000 description 3
- 150000004714 phosphonium salts Chemical group 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
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- FTTATHOUSOIFOQ-UHFFFAOYSA-N 1,2,3,4,6,7,8,8a-octahydropyrrolo[1,2-a]pyrazine Chemical compound C1NCCN2CCCC21 FTTATHOUSOIFOQ-UHFFFAOYSA-N 0.000 description 2
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 description 2
- OQZAQBGJENJMHT-UHFFFAOYSA-N 1,3-dibromo-5-methoxybenzene Chemical compound COC1=CC(Br)=CC(Br)=C1 OQZAQBGJENJMHT-UHFFFAOYSA-N 0.000 description 2
- ATOUXIOKEJWULN-UHFFFAOYSA-N 1,6-diisocyanato-2,2,4-trimethylhexane Chemical compound O=C=NCCC(C)CC(C)(C)CN=C=O ATOUXIOKEJWULN-UHFFFAOYSA-N 0.000 description 2
- QGLRLXLDMZCFBP-UHFFFAOYSA-N 1,6-diisocyanato-2,4,4-trimethylhexane Chemical compound O=C=NCC(C)CC(C)(C)CCN=C=O QGLRLXLDMZCFBP-UHFFFAOYSA-N 0.000 description 2
- HSNJERRVXUNQLS-UHFFFAOYSA-N 1-(4-tert-butylphenyl)propan-2-one Chemical compound CC(=O)CC1=CC=C(C(C)(C)C)C=C1 HSNJERRVXUNQLS-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- APVHHYZQHRNDOY-UHFFFAOYSA-N C[O-].CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC Chemical compound C[O-].CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC APVHHYZQHRNDOY-UHFFFAOYSA-N 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- NAUBYZNGDGDCHH-UHFFFAOYSA-N N=C=O.N=C=O.CCCC(C)C Chemical compound N=C=O.N=C=O.CCCC(C)C NAUBYZNGDGDCHH-UHFFFAOYSA-N 0.000 description 2
- NIPLIJLVGZCKMP-UHFFFAOYSA-M Neurine Chemical compound [OH-].C[N+](C)(C)C=C NIPLIJLVGZCKMP-UHFFFAOYSA-M 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- HTZCNXWZYVXIMZ-UHFFFAOYSA-M benzyl(triethyl)azanium;chloride Chemical compound [Cl-].CC[N+](CC)(CC)CC1=CC=CC=C1 HTZCNXWZYVXIMZ-UHFFFAOYSA-M 0.000 description 2
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- YOUGRGFIHBUKRS-UHFFFAOYSA-N benzyl(trimethyl)azanium Chemical compound C[N+](C)(C)CC1=CC=CC=C1 YOUGRGFIHBUKRS-UHFFFAOYSA-N 0.000 description 2
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 description 2
- NDKBVBUGCNGSJJ-UHFFFAOYSA-M benzyltrimethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)CC1=CC=CC=C1 NDKBVBUGCNGSJJ-UHFFFAOYSA-M 0.000 description 2
- JGCWKVKYRNXTMD-UHFFFAOYSA-N bicyclo[2.2.1]heptane;isocyanic acid Chemical compound N=C=O.N=C=O.C1CC2CCC1C2 JGCWKVKYRNXTMD-UHFFFAOYSA-N 0.000 description 2
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- NSPSPMKCKIPQBH-UHFFFAOYSA-K bismuth;7,7-dimethyloctanoate Chemical compound [Bi+3].CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O NSPSPMKCKIPQBH-UHFFFAOYSA-K 0.000 description 2
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- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 2
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- 239000012815 thermoplastic material Substances 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- DHAWHVVWUNNONG-UHFFFAOYSA-M tributyl(methyl)azanium;bromide Chemical compound [Br-].CCCC[N+](C)(CCCC)CCCC DHAWHVVWUNNONG-UHFFFAOYSA-M 0.000 description 1
- IPILPUZVTYHGIL-UHFFFAOYSA-M tributyl(methyl)azanium;chloride Chemical compound [Cl-].CCCC[N+](C)(CCCC)CCCC IPILPUZVTYHGIL-UHFFFAOYSA-M 0.000 description 1
- DXJLCRNXYNRGRA-UHFFFAOYSA-M tributyl(methyl)azanium;iodide Chemical compound [I-].CCCC[N+](C)(CCCC)CCCC DXJLCRNXYNRGRA-UHFFFAOYSA-M 0.000 description 1
- GRVPDGGTLNKOBZ-UHFFFAOYSA-M triethyl(methyl)azanium;bromide Chemical compound [Br-].CC[N+](C)(CC)CC GRVPDGGTLNKOBZ-UHFFFAOYSA-M 0.000 description 1
- NIUZJTWSUGSWJI-UHFFFAOYSA-M triethyl(methyl)azanium;chloride Chemical compound [Cl-].CC[N+](C)(CC)CC NIUZJTWSUGSWJI-UHFFFAOYSA-M 0.000 description 1
- NDPWCNORTYFYDW-UHFFFAOYSA-M triethyl(methyl)azanium;iodide Chemical compound [I-].CC[N+](C)(CC)CC NDPWCNORTYFYDW-UHFFFAOYSA-M 0.000 description 1
- GNMJFQWRASXXMS-UHFFFAOYSA-M trimethyl(phenyl)azanium;bromide Chemical compound [Br-].C[N+](C)(C)C1=CC=CC=C1 GNMJFQWRASXXMS-UHFFFAOYSA-M 0.000 description 1
- MQAYPFVXSPHGJM-UHFFFAOYSA-M trimethyl(phenyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)C1=CC=CC=C1 MQAYPFVXSPHGJM-UHFFFAOYSA-M 0.000 description 1
- GRXOWOKLKIZFNP-UHFFFAOYSA-N undecane-1,1-diol Chemical compound CCCCCCCCCCC(O)O GRXOWOKLKIZFNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T428/24149—Honeycomb-like
Definitions
- the invention relates to a semifinished product for the production of fiber composite components, comprising at least two meandering angled walls made of fiber-filled
- Matrix material which are forming a symmetrical core structure thermally joined together. Furthermore, the invention relates to a method for producing such a semifinished product, to a method for producing fiber composite components from such a semifinished product and to a fiber composite component produced from such a semifinished product.
- a fiber composite component is a part of a technical device, which is made of a fiber composite material.
- Fiber composite components are widely used in aerospace, automotive, mechanical engineering and sports equipment due to their low specific weight and high rigidity and load capacity.
- Fiber composites are inhomogeneous materials, constructed from a plastic matrix material and incorporated therein natural or artificial, organic or inorganic fibers. The fibers are used for power transmission in the fiber composite component, the matrix introduces the external forces into the fibers and protects them from harmful
- a special feature of the fiber composite construction is that fiber composite material and fiber composite component arise simultaneously, namely by the insoluble bonding of fiber and matrix.
- Classic materials such as steel or wood already exist before the component formed from them.
- Fiber composite components are, however, constructed of semi-finished, manageable, geometrically determined moldings containing fiber and matrix material of the later
- drawer or semi-finished products which may sometimes be draped or cut to one another are then arranged relative to one another and then cured to form the composite material.
- Plate-shaped fiber composite components usually comprise two in the plate plane
- hexagonal honeycomb structure is laminated as torsionally rigid core.
- the hexagon Honeycomb structure is in turn made up of a plurality of fibrous walls, which are arranged orthogonal to the cover layers.
- Hexagonal honeycomb structure is described in DE 38 38 153 C2. This is a
- thermoplastic matrix material with fibers into a wall which receives in a subsequent forming step has a meandering angled 120 ° shape. Then several of these walls are aligned with each other, so that the adjacent
- the weldable thermoplastic material allows the walls to be thermally bonded at the joints of adjacent meandering loops.
- the invention is based on the object to provide a suitable as a core structure for a plate-shaped fiber composite component semi-finished, which has a better drapability due to the not yet cured matrix, but at the same time sufficiently stable in form and storage, so that easy to handle is.
- the invention is therefore a semi-finished product for the production of
- Fiber composite components comprising at least two meandering angled walls of fiber-filled matrix material, which are thermally joined together forming a symmetrical core structure
- the matrix material is a polyurethane composition which comprises a) as binder, an isocyanate-reactive functional group
- Said polyurethane composition according to the invention is not yet cured.
- the invention is based, inter alia, on the surprising finding that fiber-filled matrix material of this polyurethane composition can be thermally attached at a temperature which is below the temperature required to repeal the
- Blockage effect is necessary. This means that walls made of fiber-filled, uncured matrix material can be "attached" to one another in a plastic welding process in order to produce a symmetrical core structure, such as hexagonal honeycombs, from the walls, since the crosslinking reaction is further inhibited despite thermal joining The curing of the semifinished product then takes place at a higher temperature level in the case of extensive heat exposure at the joints a much greater strength than the only welded, uncrosslinked semi-finished.
- a further development of the invention provides for providing the semifinished product with at least one covering layer applied to the core structure, wherein the core structure and covering layer are joined in a material-locking manner.
- Cohesive means in particular glued or thermally joined as soldered or welded. Bonding is useful if the cover layer is made of a different material than the matrix material, for example of metal. As long as the matrix material of the core connected to the cover layer is not cured, its stiffening effect is not so pronounced.
- Cover layer of the semifinished product also to add thermally.
- the special advantage of this Namely embodiment is that during curing of the
- Polyurethane composition has a cross-linking via the junctions of core and
- the uncured top layer is still flexible.
- a semifinished product according to the invention is produced as follows: a) Provision of a polyurethane composition comprising as binder a
- the Polyerthanzusammen effort can be powdered dry or - provided in a solvent - wet provided.
- the mixing of the dry powder with the fibers can be carried out, for example, in a manner known per se in a (screw) extruder, the primary shaping of the wall by extruding the molding composition through a suitably shaped tool.
- a (screw) extruder the primary shaping of the wall by extruding the molding composition through a suitably shaped tool.
- the mixing of fiber and matrix in the extruder will only be possible with short fiber lengths.
- Pultrusion process done a wet polymer composition is processed.
- the fibers can be present in textile fabrics (for example woven, braided, knitted, knitted, knitted, laid, non-woven) and impregnated in a manner known per se with the polyurethane composition dissolved in the solvent.
- the solvent is evaporated from the soaked fabric leaving the wall of fiber filled matrix material.
- the manufacturing process is extended to include steps for applying topcoat to the core structure.
- the attachment of the cover layer to the core structure takes place at temperatures such as during thermal joining.
- the thermal joining of the walls to the core or the cover layer (s) to the core is preferably carried out at a temperature below the temperature below the
- Curing temperature of the polyurethane composition is so that in the joining area no polymerization of the matrix takes place and the semi-finished product remains supple.
- a method according to the invention for producing a fiber composite component thus comprises the steps of providing a semifinished product produced according to the invention and curing the polyurethane composition at a temperature above the temperature during thermal joining.
- the invention thus also relates to a process for the preparation of a
- An essential feature of the present invention is the use of an inhibited polyurethane composition as matrix material, which
- Polyurethane compositions are suitable as matrix materials.
- Particularly suitable Polyurethane compositions consist of mixtures of a functional group-reactive with respect to NCO-containing polymers as a binder and temporarily deactivated, that is internally blocked and / or blocked with blocking agents di- or polyisocyanates, as a curing agent.
- Suitable functional groups of the polymers used as binders are hydroxyl groups, amino groups and thiol groups which react with the free isocyanate groups with addition and thus crosslink and harden the polyurethane composition.
- the binder components must have a solid resin character (glass transition temperature greater than room temperature).
- Suitable binders are polyesters, polyethers, polyacrylates, polycarbonates and polyurethanes having an OH number of 20 to 500 mg KOH / gram and an average molecular weight of 250 to 6000 g / mol. Particularly preferred
- hydroxyl-containing polyesters or polyacrylates having an OH number of 20 to 150 mg KOH / gram and an average molecular weight of 500 to 6000 g / mol.
- the amount of polymers having the functional groups is selected such that each functional group of the binder component accounts for 0.6 to 2 NCO equivalents or 0.3 to 1.0 uretdione groups of the hardener component.
- Suitable hardener components are blocked or internally blocked (uretdione) di- and polyisocyanates with blocking agents.
- the diisocyanates and polyisocyanates used according to the invention can consist of any desired aromatic, aliphatic, cycloaliphatic and / or (cyclo) aliphatic di- and / or polyisocyanates.
- aromatic di- or polyisocyanates in principle, all known aromatic compounds are suitable. Particularly suitable are 1, 3 and 1, 4-phenylene diisocyanate, 1, 5-naphthylene diisocyanate, tolidine diisocyanate, 2,6-toluene diisocyanate, 2,4-toluene diisocyanate (2,4-TDI), 2,4'-diphenylmethane diisocyanate ( 2,4'-MDI), 4,4'-diphenylmethane diisocyanate, the mixtures of monomeric diphenylmethane diisocyanates (MDI) and oligomers
- Diphenylmethane diisocyanates (polymer-MDI), xylylene diisocyanate,
- Tetramethylxylylene diisocyanate and triisocyanatotoluene Tetramethylxylylene diisocyanate and triisocyanatotoluene.
- Suitable aliphatic di- or polyisocyanates advantageously have 3 to 16
- Carbon atoms preferably 4 to 12 carbon atoms, in the linear or branched alkylene radical and suitable cycloaliphatic or (cyclo) aliphatic diisocyanates advantageously 4 to 18 carbon atoms, preferably 6 to 15 carbon atoms, in the cycloalkylene radical.
- suitable cycloaliphatic or (cyclo) aliphatic diisocyanates advantageously 4 to 18 carbon atoms, preferably 6 to 15 carbon atoms, in the cycloalkylene radical.
- (cyclo) aliphatic diisocyanates the skilled person understands at the same time cyclic and aliphatic bonded
- NCO groups as z.
- isophorone diisocyanate is the case.
- Examples are cyclohexane diisocyanate, methylcyclohexane diisocyanate,
- Methyldiethylcyclohexane diisocyanate propane diisocyanate, butane diisocyanate,
- Nonane diisocyanate, nonane triisocyanate such as 4-isocyanatomethyl-1, 8-octane diisocyanate (TIN), decane and triisocyanate, undecanediol and triisocyanate, dodecanedi and triisocyanates.
- TIN 4-isocyanatomethyl-1, 8-octane diisocyanate
- decane and triisocyanate undecanediol and triisocyanate
- dodecanedi and triisocyanates dodecanedi and triisocyanates.
- IPDI isophorone diisocyanate
- HDI hexamethylene diisocyanate
- H 12 MDI Diisocyanatodicyclohexylmethane
- MPDI 2-methylpentane diisocyanate
- TMDI 2,2,4-trimethylhexamethylene diisocyanate / 2,4,4-trimethylhexamethylene diisocyanate
- NBDI norbornane diisocyanate
- mixtures of di- and polyisocyanates can be used.
- oligoisocyanates or polyisocyanates which are prepared from the abovementioned diisocyanates or polyisocyanates or mixtures thereof by linking by means of urethane, allophanate, urea, biuret, uretdione, amide, isocyanurate, carbodiimide, uretonimine , Oxadiazinetrione or iminooxadiazinedione structures.
- isocyanurates especially from IPDI and HDI.
- the polyisocyanates used in the invention are blocked. In question come to external blocking agents such. Ethyl acetoacetate, diisopropylamine,
- the preferred hardener components are IPDI adducts containing isocyanurate moieties and ⁇ -caprolactam blocked isocyanate structures.
- An internal blocking is possible and this is preferably used.
- the internal blocking takes place via a dimer formation via uretdione structures which, at elevated temperature, split back into the originally present isocyanate structures and thus initiate crosslinking with the binder.
- the reactive polyurethane compositions may contain additional catalysts.
- organometallic catalysts such as. B.
- Dibutyltin dilaurate DBTL
- Zinnoctoat bismuth neodecanoate
- tertiary amines such as. B. 1, 4-diazabicyclo [2.2.2.] Octane, in amounts of 0.001 - 1 wt .-%.
- reactive polyurethane compositions are used under normal conditions, for. B. with DBTL catalysis, from 160 ° C, usually cured from about 180 ° C and designated as.
- additives such as leveling agents, for.
- leveling agents for.
- polysilicone or acrylates light stabilizers z.
- sterically hindered amines, or other auxiliaries such as.
- Fillers and pigments such. Titanium dioxide may be added in an amount of up to 30% by weight of the total composition.
- Reactive (variant I) in the context of this invention means that the reactive polyurethane compositions used according to the invention, as described above, cure at temperatures above 160 ° C., depending on the type of fiber.
- the reactive polyurethane compositions used in the invention are used under normal conditions, for. B. with DBTL catalysis, from 160 ° C, usually from about 180 ° C cured.
- Polyurethane composition is usually within 5 to 60 minutes.
- a matrix material consisting of a polyurethane containing uretdione reactive polyurethane compositions, substantially containing a) at least one hardening agent containing uretdione groups, based on
- % and a uretdione content of 3 - 25 wt .-% b) at least one hydroxyl-containing polymer which is below 40 ° C in solid form and above 125 ° C in liquid form and an OH number between 20 and 200 mg KOH / gram, c) optionally at least one catalyst, d) optionally auxiliaries and additives known from polyurethane chemistry, so that the two components hardener and binder are present in the ratio of 0.3 to 1 uretdione group for each hydroxyl group of the binder component the hardener component is omitted, preferably 0.45 to 0.55.
- the latter corresponds to an NCO / OH ratio of 0.9 to 1, 1 to 1.
- Dimerization catalysts such as dialkylaminopyridines, trialkylphosphines,
- IPDI isophorone diisocyanate
- HDI hexamethylene diisocyanate
- H 12 MDI Diisocyanatodicyclohexylmethane
- MPDI 2-methylpentane diisocyanate
- TMDI 2,2,4-trimethylhexamethylene diisocyanate / 2,4,4-trimethylhexamethylene diisocyanate
- NBDI Norbornane diisocyanate
- IPDI and HDI are used for the matrix material.
- polyesters polythioethers, polyethers, polycaprolactams, polyepoxides, polyester amides, polyurethanes or low molecular weight di-, tri- and / or tetra alcohols as chain extenders and optionally monoamines and / or monoalcohols as chain terminators and has been frequently described (EP 669 353, EP 669 354 DE 30 30 572, EP 639 598 or EP 803 524).
- Preferred uretdione hardeners have a free NCO content of less than 5% by weight and a content of uretdione groups of 3 to 25% by weight, preferably 6 to 18% by weight (calculated as C2N2O2, molecular weight 84). Preference is given to polyesters and monomeric dialcohols. Besides the uretdione groups, the hardeners can also be used.
- polyesters, polyethers, polyacrylates, polyurethanes and / or polycarbonates having an OH number of 20-200 in mg KOH / gram.
- Binders have been described, for example, in EP 669 354 and EP 254 152.
- additional catalysts can be present in the reactive polyurethane compositions according to the invention.
- organometallic catalysts such as. As dibutyltin dilaurate, zinc octoate, bismuth neodecanoate, or tertiary amines, such as. B. 1, 4-diazabicyclo [2.2.2.] Octane, in amounts of 0.001 - 1 wt .-%.
- These reactive polyurethane compositions used in this invention are used under normal conditions, for. B. with DBTL catalysis, from 160 ° C, usually cured from about 180 ° C and designated as variant I.
- the customary in the powder coating technology additives such as leveling agents, for. B.
- the reactive polyurethane compositions used in the invention are used under normal conditions, for. B. with DBTL catalysis, from 160 ° C, usually from about 180 ° C cured.
- the reactive polyurethane compositions used according to the invention provide a very good flow and thus a good impregnating ability and in the
- aliphatic crosslinkers eg IPDI or H 12 MDI
- a matrix material is used
- Ammonium acetylacetonate and / or quaternary phosphonium acetylacetonate e) optionally known from polyurethane chemistry auxiliaries and additives.
- a matrix material consisting of at least one highly reactive powdery uretdione-containing polyurethane composition as matrix material, essentially containing
- cycloaliphatic uretdione groups contained polyisocyanates and
- hydroxyl-containing compounds wherein the hardener is below 40 ° C. in solid form and above 125 ° C. in liquid form and has a free NCO content of less than 5% by weight and a uretdione content of 3 to 25% by weight, b) at least one hydroxyl-containing polymer which is in liquid form below 40 ° C in solid form and above 125 ° C and an OH number between 20 and 200 mg KOH / gram;
- Ammonium acetylacetonate and / or quaternary phosphonium acetylacetonate e) optionally known from polyurethane chemistry auxiliaries and additives, so that the two components hardener and binder are present in the ratio that accounts for each hydroxyl group of the binder component 0.3 to 1 uretdione of the hardener component, preferably 0.6 to 0.9.
- the latter corresponds to an NCO / OH ratio of 0.6 to 2 to 1 or 1, 2 to 1, 8 to 1.
- suitable highly reactive polyurethane compositions containing uredione groups comprise mixtures of temporarily deactivated, ie uretdione-containing (internally blocked) di- or polyisocyanates, also referred to as hardeners, and the catalysts according to the invention and optionally additionally a functional group-reactive polymer having NCO groups (Binder), also referred to as resin.
- the catalysts ensure curing of the Uredion phenomenon containing polyurethane compositions at low temperature. The Uredion phenomenon-containing polyurethane compositions are thus highly reactive.
- binders and hardeners such components are used as described above.
- the catalysts used are quaternary ammonium salts, preferably tetralkylammonium salts and / or quaternary phosphonium salts with halogens, hydroxides, alcoholates or organic or inorganic acid anions as counterion. Examples are:
- Tetramethylammonium propionate tetramethylammonium butyrate, tetramethylammonium benzoate, tetraethylammonium formate, tetraethylammonium acetate,
- Tetrapropylammonium benzoate tetrabutylammonium formate, tetrabutylammonium acetate, tetrabutylammonium propionate, tetrabutylammonium butyrate and
- Trihexyltetradecylphosphonium decanoate methyltributylammonium hydroxide
- Methyltriethylammonium hydroxide tetramethylammonium hydroxide
- Tetraethylammonium hydroxide Tetrapropylammonium hydroxide
- Tetrahexylammonium hydroxide Tetrahexylammonium hydroxide, tetraoctylammonium hydroxide,
- Tetradecylammonium hydroxide Tetradecylammonium hydroxide, tetradecyltrihexylammonium hydroxide,
- Tetraoctadecylammonium hydroxide Tetraoctadecylammonium hydroxide, benzyltrimethylammonium hydroxide,
- Methyltributylammonium methoxide methyltriethylammonium methoxide
- Tetrapentylammonium methoxide Tetrapentylammonium methoxide, tetrahexylammonium methoxide,
- Trimethylphenylammonium methoxide triethylmethylammonium methoxide
- Trimethyl vinyl ammonium methoxide methyl tributyl ammonium ethoxide
- Methyltriethylammoniumethanolat Tetramethylammoniumethanolat
- Triethylmethylammoniumethanolate tri-methylvinylammoniumethanolate
- Methyltributylammonium chloride methyltripropylammonium chloride
- Methyltriethylammonium chloride methyltriphenylammonium chloride, Phenyltrimethylammonium chloride, benzyltrimethylammonium bromide,
- Methyltripropylammonium bromide methyltriethylammonium bromide
- Methyltriphenylammonium bromide phenyltrimethylammonium bromide
- Benzyltripropylammonium iodide benzyltributylammonium iodide, methyltributylammonium iodide, methyltripropylammonium iodide, methyltriethylammonium iodide,
- Methyltributylammonium hydroxide methyltriethylammonium hydroxide
- Tetramethylammonium hydroxide Tetraethylammonium hydroxide
- Tetrapropylammonium hydroxide Tetrabutylammonium hydroxide
- Tetrapentylammonium hydroxide Tetrapentylammonium hydroxide, tetrahexylammonium hydroxide,
- Tetradecyltrihexylammonium hydroxide Tetradecyltrihexylammonium hydroxide, tetraoctadecylammonium hydroxide,
- Trimethylphenylammonium hydroxide triethylmethylammonium hydroxide
- Trimethylvinylammonium hydroxide Trimethylvinylammonium hydroxide, tetramethylammonium fluoride,
- Tetraethylammonium fluoride Tetraethylammonium fluoride, tetrabutylammonium fluoride, tetraoctylammonium fluoride and benzyltrimethylammonium fluoride. These catalysts may be added alone or in mixtures. Preference is given to tetraethylammonium benzoate and
- Tetrabutylammonium hydroxide used.
- the proportion of catalysts may be 0.1 to 5 wt .-%, preferably from 0.3 to 2 wt .-%, based on the total formulation of the matrix material.
- a variant according to the invention includes the attachment of such catalysts to the functional groups of the binder polymers.
- these catalysts may be surrounded with an inert shell and encapsulated with it.
- Glycidyl ethers and glycidyl esters aliphatic epoxides, diglycidyl ethers based on bisphenol A and glycidyl methacrylates.
- epoxides are triglycidyl isocyanurate (TGIC, trade name ARALDIT 810, Huntsman), mixtures of terephthalic acid diglycidyl ester and trimellitic triglycidyl ester (trade name ARALDIT PT 910 and 912, Huntsman),
- Glycidyl ester of versatic acid (trade name KARDURA E10, Shell), 3,4- Epoxycyclohexylmethyl 3 ', 4'-epoxycyclohexanecarboxylate (ECC), diglycidyl ether based on bisphenol A (trade name EPIKOTE 828, Shell) ethylhexyl glycidyl ether, butyl glycidyl ether, pentaerythritol tetraglycidyl ether, (trade name POLYPOX R 16, UPPC AG) as well as other types of polyoxymethylene with free epoxy groups. It can also be used mixtures. Preference is given to using ARALDIT PT 910 and 912 used.
- Suitable cocatalysts d2) are metal acetylacetonates. Examples of these are zinc acetylacetonate, lithium acetylacetonate and tin acetylacetonate, alone or in
- Zinc acetylacetonate is preferably used.
- cocatalysts d2 are quaternary ammonium acetylacetonates or quaternary phosphonium acetylacetonates.
- catalysts examples include tetramethylammonium acetylacetonate,
- Tetrabutylphosphonium acetylacetonate Benzyltrimethylphosphoniumacetylacetonat, Benzyltriethylphosphoniumacetylacetonat.
- Tetraethylammoniumacetylacetonat and tetrabutylammonium acetylacetonate used. Of course, mixtures of such catalysts can be used.
- the proportion of cocatalysts d1) and / or d2) can be from 0.1 to 5% by weight, preferably from 0.3 to 2% by weight, based on the total formulation of the matrix material.
- Curing temperature not only saves energy and curing time, but it can also use many temperature-sensitive fibers.
- Highly reactive (variant II) in the context of this invention means that the uretdione group-containing polyurethane compositions used according to the invention cure at temperatures of 100 to 160 ° C, depending on the nature of the fiber. This curing temperature is preferably from 120 to 150.degree. C., more preferably from 130 to 140.degree. The time for curing the polyurethane composition used according to the invention is within 5 to 60 minutes. Contain the highly reactive Uredion phenomenon used in the invention
- Polyurethane compositions offer a very good flow and thus a good impregnation and in the cured state an excellent
- Polyurethane compositions essentially consist of a mixture of a reactive resin and a hardener. After melt homogenization, this mixture has a glass transition temperature T g of at least 40 ° C. and usually reacts above 160 ° C., in the reactive polyurethane compositions or above 100 ° C., in the highly reactive polyurethane compositions to form a crosslinked polyurethane and thus forms the Matrix of the composite. That means the
- semifinished products are prepared after their preparation from the fibers and the applied reactive polyurethane composition as a matrix material, which is present in uncrosslinked, but reactive form.
- a thermal joining (attachment) to the structure of the core structure is then possible at about 75 to 82 ° C.
- the semi-finished products are as a result stable in storage, usually several days and even weeks and can thus be further processed at any time into fiber composite components. This is the essential difference to the two-component systems already described above, which are reactive and not storage-stable, since these are after the
- FIG. 1 Laboratory scattering device (Villars Minicoater 200) for the production of
- Figure 2 Graphical representation of enthalpy over time
- Figures 3 and 4 Graphical representation of the glass transition temperature T g over time
- Figure 5 Production of a semifinished product according to the invention and subsequent
- Type I is a canvas E-glass fabric 281 L Art.No. 3103 of the company "Schlösser &Cramer"
- the fabric has a basis weight of 280 g / m 2 .
- Type II GBX 600 Art.No. 1023 is a sewn biaxial E-glass-clutches (-45 / + 45) of the company "Schlösser &Cramer", which means two layers of fiber bundles, which lie one above the other and are offset at an angle of 90 degrees This structure is held together by other fibers which, however, are not made of glass
- the surface of the glass fibers is equipped with a standard sizing which is modified with aminosilane
- the scrim has a basis weight of 600 g / m 2 .
- a highly reactive powdered polyurethane composition having the following formulation was used to make the walls of the semi-finished products. (In% by weight):
- the comminuted feedstocks from the table are intimately mixed in a premixer and then homogenized in the extruder to a maximum of 130 ° C. After cooling, the extrudate is broken and ground with a pin mill. The used
- Sieve fractions had mean particle diameters between 63 and 100 ⁇ .
- the strip-shaped, flat walls of fiber-containing matrix material can be further processed according to Figure 5 to symmetrical core structures.
- the strip-shaped, flat wall 1 is first angled continuously at room temperature with a constant leg length of 120 °, so that it receives a meandering shape 2 similar to a trapezoidal sheet.
- the storage stability of the semi-finished products was determined by the reaction enthalpies of the
- the cross-linking ability of the PU semi-finished products is not impaired by the storage at room temperature for at least a period of 7 weeks.
- FIG. 5 is further illustrated schematically, as from the semifinished product 3, a fiber composite component 4 is formed.
- the composite component was produced by means of a press technique known to the person skilled in the art on a composite press.
- the honeycomb structure 3 was pressed on a table press with cover layers of the same material.
- This table press is the Polystat 200 T from Schwabenthan, with which the honeycomb structure was pressed at 130 to 140 ° C with cover layers of the same fibrous matrix matrix to the corresponding fiber composite panels.
- the pressure was varied between normal pressure and 450 bar. Dynamic compression, ie changing pressures can be depending on the component size, thickness and polyurethane composition and thus the Viscosity adjustment at the processing temperature for the wetting of the fibers prove to be advantageous.
- the temperature of the press was maintained at 135 ° C, the pressure was increased after a reflow phase of 3 minutes to 440 bar and held until removal of the composite component from the press after 30 minutes at this level.
- Fiber composite components 4 with a fiber volume fraction of> 50% were examined with respect to the degree of cure (determined by DSC). The determination of
- Glass transition temperature of the cured matrix shows the progress of crosslinking at different curing temperatures.
- Polyurethane composition is complete after about 25 minutes, the crosslinking, in which case no reaction enthalpy for the crosslinking reaction is more detectable. The results are shown in FIG.
- ILSF interlaminar shear strength
- the walls of the semifinished product can also assume the meandering shape of bump plates
- the humps meander in two dimensions; meanwhile the honeycomb walls meander in one dimension only.
- the bump plates are like honeycomb walls offset from each other added together, so that a symmetrical core structure is formed.
- this new structure provides a high joining surface for the cover layer connection.
- bump plates can be produced particularly advantageously, since the uncured polymer composition permits a very steep bump design and thus permits extreme constructions which are not readily producible in metal.
- Bump plates and related manufacturing processes are used inter alia in
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Abstract
Description
Claims
Priority Applications (11)
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AU2011267319A AU2011267319B2 (en) | 2010-06-17 | 2011-05-18 | Semifinished product for the production of fibre composite components based on stable polyurethane compositions |
RU2013101967/05A RU2013101967A (ru) | 2010-06-17 | 2011-05-18 | Заготовка для получения волокнистых композиционных конструктивных элементов на основе стабильных при хранении полиуретановых композиций |
JP2013514614A JP2013530280A (ja) | 2010-06-17 | 2011-05-18 | 貯蔵安定性を有するポリウレタン組成物をベースとする繊維複合材コンポーネントの製造のための半製品 |
CA2799340A CA2799340A1 (en) | 2010-06-17 | 2011-05-18 | Semifinished product for the production of fibre composite components based on stable polyurethane compositions |
EP11721759.6A EP2582516A1 (de) | 2010-06-17 | 2011-05-18 | Halbzeug für die herstellung von faserverbundbauteilen auf basis von lagerstabilen polyurethanzusammensetzungen |
CN2011800298481A CN102933384A (zh) | 2010-06-17 | 2011-05-18 | 用于制备基于贮存稳定的聚氨酯组合物的纤维复合构件的半成品 |
MX2012013547A MX2012013547A (es) | 2010-06-17 | 2011-05-18 | Producto semicabado para la produccion de componentes compuestos de fibra basados en composiciones de poliuretano estable. |
BR112012030303A BR112012030303A2 (pt) | 2010-06-17 | 2011-05-18 | produto semi-acabado para a produção de componentes compósitos fibrosos, processos para produção de um produto semi-acabado e de um componente compósito fibroso |
US13/700,734 US20130078417A1 (en) | 2010-06-17 | 2011-05-18 | Semifinished product for the production of fibre composite components based on stable polyurethane compositions |
KR1020127032825A KR20130113947A (ko) | 2010-06-17 | 2011-05-18 | 안정한 폴리우레탄 조성물 기재의 섬유 복합재 구성요소 제조용 반완성 제품 |
ZA2012/09546A ZA201209546B (en) | 2010-06-17 | 2012-12-14 | Semifinished product for the production of fibre composite components based on stable polyurethane compositions |
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DE102010030233A DE102010030233A1 (de) | 2010-06-17 | 2010-06-17 | Halbzeug für die Herstellung von Faserverbundbauteilen auf Basis von lagerstabilen Polyurethanzusammensetzungen |
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US (1) | US20130078417A1 (de) |
EP (1) | EP2582516A1 (de) |
JP (1) | JP2013530280A (de) |
KR (1) | KR20130113947A (de) |
CN (1) | CN102933384A (de) |
AU (1) | AU2011267319B2 (de) |
BR (1) | BR112012030303A2 (de) |
CA (1) | CA2799340A1 (de) |
DE (1) | DE102010030233A1 (de) |
MX (1) | MX2012013547A (de) |
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US10029427B2 (en) | 2010-09-23 | 2018-07-24 | Evonik Degussa Gmbh | Process for the production of storage-stable polyurethane prepregs and mouldings produced therefrom from dissolved polyurethane composition |
US10633519B2 (en) | 2011-03-25 | 2020-04-28 | Evonik Operations Gmbh | Storage-stable polyurethane prepregs and mouldings produced therefrom composed of a polyurethane composition with liquid resin components |
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US8298647B2 (en) * | 2007-08-20 | 2012-10-30 | California Institute Of Technology | Multilayered cellular metallic glass structures and methods of preparing the same |
EP2661459B1 (de) | 2011-01-04 | 2016-06-08 | Evonik Degussa GmbH | Composite-halbzeuge und daraus hergestellte formteile sowie direkt hergestellte formteile auf basis von hydroxyfunktionalisierten (meth) acrylaten, die mittels uretdionen duroplastisch vernetzt werden |
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CN109715691A (zh) * | 2016-09-20 | 2019-05-03 | 科思创德国股份有限公司 | 基于多异氰酸酯的各向异性复合材料 |
ES2880621T3 (es) | 2016-12-02 | 2021-11-25 | Evonik Degussa Gmbh | Productos preimpregnados de poliuretano 1K estables al almacenamiento y cuerpos moldeados a partir de la composición de poliuretano producidos a partir de estos |
DE102018206120A1 (de) * | 2018-04-20 | 2019-10-24 | Faurecia Innenraum Systeme Gmbh | Verbundteil, insbesondere Innenverkleidungsteil, und Verfahren zu dessen Herstellung |
KR20230051889A (ko) * | 2021-10-12 | 2023-04-19 | 삼성전기주식회사 | 적층체 압착방법 및 이를 포함하는 세라믹 전자부품 제조방법 |
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EP0669353A1 (de) | 1994-02-28 | 1995-08-30 | Hüls Aktiengesellschaft | Hydroxyl- und uretdiongruppenhaltige Polyadditionsprodukte und Verfahren zu ihrer Herstellung sowie deren Verwendung zur Herstellung abspaltfreier Polyurethan-Pulverlacke hoher Reaktivität und die danach hergestellten Polyurethan-Pulverlacke |
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EP0803524A1 (de) | 1996-04-25 | 1997-10-29 | Bayer Ag | Abspalterfreier Polyurethan-Pulverlack mit niedriger Einbrenntemperatur |
US5714226A (en) * | 1991-05-04 | 1998-02-03 | Hoechst Aktiengesellschaft | Porous honeycomb material and manufacture and use thereof |
DE19944662A1 (de) | 1999-09-17 | 2001-06-07 | Dirk Bohmann | Räumliche Tragwerkkonstruktion aus flächigen Formbauteilen (Fachwerkplatten) |
DE10158276C1 (de) | 2001-11-28 | 2003-01-16 | Dirk Bohmann | Formbauteil aus querversteiften Höckern |
DE10222495C1 (de) | 2002-05-22 | 2003-12-18 | Dirk Bohmann | Wabenplatte aus flächigen Formbauteilen |
DE10241726B3 (de) | 2002-09-10 | 2004-01-08 | Bohmann, Dirk, Dr.-Ing. | Belüftete Höckerplatte als Kern eines Sandwichs |
DE10252207B3 (de) | 2002-11-09 | 2004-02-26 | Bohmann, Dirk, Dr.-Ing. | Formteil als Kern eines Sandwichs |
DE102005021487A1 (de) | 2005-05-10 | 2006-11-16 | Bohmann, Dirk, Dr.-Ing. | Metallische Bipolarplatte aus einer umgeformten Folie |
DE102005026060A1 (de) | 2005-05-18 | 2006-11-23 | Bohmann, Dirk, Dr.-Ing. | Bipolarplatte |
DE102006031696A1 (de) | 2006-07-08 | 2008-01-10 | Bohmann, Dirk, Dr.-Ing. | Distanzhalter in Höckerplatten zur Einstellung der Klebstoffdicke |
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CN1031062C (zh) * | 1989-05-06 | 1996-02-21 | 三井东压化学株式会社 | 聚氨酯树脂的制备方法 |
DE4441765A1 (de) * | 1994-11-24 | 1996-05-30 | Teodur Nv | Bindemittelzusammensetzung zur Herstellung von Faservliesen und Verfahren zur Herstellung von Faservlies-Formteilen |
-
2010
- 2010-06-17 DE DE102010030233A patent/DE102010030233A1/de not_active Withdrawn
-
2011
- 2011-05-18 KR KR1020127032825A patent/KR20130113947A/ko not_active Application Discontinuation
- 2011-05-18 RU RU2013101967/05A patent/RU2013101967A/ru not_active Application Discontinuation
- 2011-05-18 WO PCT/EP2011/058055 patent/WO2011157507A1/de active Application Filing
- 2011-05-18 MX MX2012013547A patent/MX2012013547A/es not_active Application Discontinuation
- 2011-05-18 US US13/700,734 patent/US20130078417A1/en not_active Abandoned
- 2011-05-18 BR BR112012030303A patent/BR112012030303A2/pt not_active IP Right Cessation
- 2011-05-18 CN CN2011800298481A patent/CN102933384A/zh active Pending
- 2011-05-18 JP JP2013514614A patent/JP2013530280A/ja not_active Withdrawn
- 2011-05-18 CA CA2799340A patent/CA2799340A1/en not_active Abandoned
- 2011-05-18 EP EP11721759.6A patent/EP2582516A1/de not_active Withdrawn
- 2011-05-18 MY MYPI2012005383A patent/MY153324A/en unknown
- 2011-05-18 AU AU2011267319A patent/AU2011267319B2/en not_active Ceased
-
2012
- 2012-12-14 ZA ZA2012/09546A patent/ZA201209546B/en unknown
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EP0254152A1 (de) | 1986-07-22 | 1988-01-27 | Bayer Ag | Pulverlack und seine Verwendung zur Beschichtung von Hitzeresistenten Substraten |
US4912210A (en) | 1987-11-21 | 1990-03-27 | Huels Aktiengesellschaft | Process for the preparation of (cyclo)aliphatic uretediones |
EP0368238A2 (de) * | 1988-11-10 | 1990-05-16 | Schütz-Werke GmbH & Co. KG. | Leichtbauwerkstoff sowie Verfahren und Anlage zur Herstellung von Wabenstrukturen aus dem Leichtbauwerkstoff |
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EP0669354A1 (de) | 1994-02-28 | 1995-08-30 | Hüls Aktiengesellschaft | Verfahren zur Herstellung von uretdiongruppenhaltigen Polyadditionsprodukten und deren Verwendung in Polyurethan-Lacksystemen |
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DE19944662A1 (de) | 1999-09-17 | 2001-06-07 | Dirk Bohmann | Räumliche Tragwerkkonstruktion aus flächigen Formbauteilen (Fachwerkplatten) |
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DE10241726B3 (de) | 2002-09-10 | 2004-01-08 | Bohmann, Dirk, Dr.-Ing. | Belüftete Höckerplatte als Kern eines Sandwichs |
DE10252207B3 (de) | 2002-11-09 | 2004-02-26 | Bohmann, Dirk, Dr.-Ing. | Formteil als Kern eines Sandwichs |
DE102005021487A1 (de) | 2005-05-10 | 2006-11-16 | Bohmann, Dirk, Dr.-Ing. | Metallische Bipolarplatte aus einer umgeformten Folie |
DE102005026060A1 (de) | 2005-05-18 | 2006-11-23 | Bohmann, Dirk, Dr.-Ing. | Bipolarplatte |
DE102006031696A1 (de) | 2006-07-08 | 2008-01-10 | Bohmann, Dirk, Dr.-Ing. | Distanzhalter in Höckerplatten zur Einstellung der Klebstoffdicke |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10029427B2 (en) | 2010-09-23 | 2018-07-24 | Evonik Degussa Gmbh | Process for the production of storage-stable polyurethane prepregs and mouldings produced therefrom from dissolved polyurethane composition |
US10633519B2 (en) | 2011-03-25 | 2020-04-28 | Evonik Operations Gmbh | Storage-stable polyurethane prepregs and mouldings produced therefrom composed of a polyurethane composition with liquid resin components |
Also Published As
Publication number | Publication date |
---|---|
AU2011267319B2 (en) | 2014-06-05 |
CN102933384A (zh) | 2013-02-13 |
ZA201209546B (en) | 2013-08-28 |
EP2582516A1 (de) | 2013-04-24 |
DE102010030233A1 (de) | 2011-12-22 |
KR20130113947A (ko) | 2013-10-16 |
BR112012030303A2 (pt) | 2016-08-09 |
CA2799340A1 (en) | 2011-12-22 |
AU2011267319A1 (en) | 2012-12-13 |
MY153324A (en) | 2015-01-29 |
MX2012013547A (es) | 2013-01-24 |
US20130078417A1 (en) | 2013-03-28 |
JP2013530280A (ja) | 2013-07-25 |
RU2013101967A (ru) | 2014-07-27 |
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