WO2014184257A1 - Zweikomponentige polyurethanzusammensetzung - Google Patents
Zweikomponentige polyurethanzusammensetzung Download PDFInfo
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- WO2014184257A1 WO2014184257A1 PCT/EP2014/059875 EP2014059875W WO2014184257A1 WO 2014184257 A1 WO2014184257 A1 WO 2014184257A1 EP 2014059875 W EP2014059875 W EP 2014059875W WO 2014184257 A1 WO2014184257 A1 WO 2014184257A1
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- polyurethane composition
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- 239000000203 mixture Substances 0.000 title claims abstract description 104
- 239000004814 polyurethane Substances 0.000 title claims abstract description 64
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 64
- 229920005862 polyol Polymers 0.000 claims abstract description 64
- 150000003077 polyols Chemical class 0.000 claims abstract description 64
- 150000002009 diols Chemical class 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 29
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- 239000005062 Polybutadiene Substances 0.000 claims abstract description 26
- -1 aromatic diol Chemical class 0.000 claims abstract description 26
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- 239000004721 Polyphenylene oxide Substances 0.000 claims description 29
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- 229920001228 polyisocyanate Polymers 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims description 12
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- HXSACZWWBYWLIS-UHFFFAOYSA-N oxadiazine-4,5,6-trione Chemical group O=C1ON=NC(=O)C1=O HXSACZWWBYWLIS-UHFFFAOYSA-N 0.000 description 1
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
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- 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
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 1
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- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- KGLSETWPYVUTQX-UHFFFAOYSA-N tris(4-isocyanatophenoxy)-sulfanylidene-$l^{5}-phosphane Chemical compound C1=CC(N=C=O)=CC=C1OP(=S)(OC=1C=CC(=CC=1)N=C=O)OC1=CC=C(N=C=O)C=C1 KGLSETWPYVUTQX-UHFFFAOYSA-N 0.000 description 1
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- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4829—Polyethers containing at least three hydroxy groups
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
- C04B40/0641—Mechanical separation of ingredients, e.g. accelerator in breakable microcapsules
- C04B40/065—Two or more component mortars
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- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
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- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/482—Mixtures of polyethers containing at least one polyether containing nitrogen
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/487—Polyethers containing cyclic groups
- C08G18/4879—Polyethers containing cyclic groups containing aromatic groups
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
- C08G18/698—Mixtures with compounds of group C08G18/40
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/12—Polyurethanes from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
Definitions
- the invention relates to the field of two-component polyurethane compositions and their use, in particular as an adhesive or as a potting compound.
- Two-component polyurethane adhesives based on polyols and polyisocyanates have been used for a long time.
- Two-component polyurethane adhesives have the advantage that they cure quickly after mixing and therefore can absorb and transmit higher forces after a short time.
- high demands are placed on such adhesives in terms of strength and adhesion, since such adhesives represent elements of load-bearing structures.
- this object is achieved with the novel polyurethane composition. It has a high content of a polybutadiene polyol. Furthermore, it contains a polyether polyol, a
- the composition has a very high strength and good elasticity, excellent dimensional stability at high temperatures, a weak dependence of the mechanical properties on the temperature and very good adhesion properties on metallic substrates. This is in particular the high values for tensile shear strength in the
- Heat distortion temperature can be seen.
- the composition is particularly resistant to moisture.
- the present invention relates to a polyurethane composition consisting of a first and a second component; in which
- At least one alkoxylated aromatic diol A1 having an average molecular weight in the range from 300 to 1 ⁇ 00 g / mol,
- At least one polybutadiene polyol A3 having an average OH functionality in the range from 2.1 to 2.9, in particular 2.3 to 2.7, and having a moderate molecular weight in the range from 2000 to 4000 g / mol, in particular 2500 to 3000 g / mol, and
- At least one polyisocyanate comprises;
- diol A1, the diol A2, the polybutadiene polyol A3 and the polyether polyol A4 are present in an amount such that
- the weight ratio A1 / A2 is in the range from 0.1 to 1, preferably 0.1 to 0.7, in particular 0.2 to 0.6,
- the weight ratio (A3 + A4) / (A1 + A2) is in the range from 1.8 to 8, preferably from 1.8 to 5.5, particularly preferably from 1.8 to 5, most preferably from 1.8 to 3, and
- Component present polyols in the range of 30 to 80% by weight, preferably 35 to 70% by weight, in particular 35 to 60% by weight.
- poly in substance terms such as “polyol”, “polyisocyanate”, “polyether” or “polyamine” indicates in this document that the respective substance formally contains more than one of the functional group occurring in its name per molecule.
- molecular weight refers to the molar mass (in grams per mole) of a molecule.
- Average molecular weight refers to the number average molecular weight M n of an oligomeric or polymeric mixture of molecules, usually by GPC versus polystyrene Standard is determined.
- open time in this document refers to the time within which the parts to be bonded must be joined after the components have been mixed.
- the term “strength” in the present document refers to the strength of the cured adhesive, with strength being meant in particular the tensile strength and the modulus of elasticity (modulus of elasticity), in particular in the expansion range from 0.05 to 0.25%.
- room temperature is referred to in this document a temperature of 23 ° C.
- the first component of the composition comprises at least one alkoxylated aromatic diol A1 having an average molecular weight in the range of 300 to 1 ⁇ 00 g / mol.
- the alkoxylated aromatic diol A1 is, in particular, a polyether diol with an aromatic fraction, as is obtainable in particular by alkoxylation of an aromatic diol having two phenolic OH groups.
- the alkoxylated aromatic diol A1 preferably represents an ethoxylated and / or propoxylated and / or butoxylated aromatic diol, in particular an ethoxylated and / or propoxylated aromatic diol. These diols are particularly accessible.
- the alkoxylated aromatic diol A1 particularly preferably represents a propoxylated aromatic diol. These diols give readily processable adhesives with good adhesion properties in the cured state.
- the aromatic fraction of the alkoxylated aromatic diol A1 preferably represents a benzene radical, naphthalene radical, diphenylmethane radical, 1,1-diphenylethane radical, 2,2-diphenylpropane radical, diphenyl ether radical, benzophenone radical, bis (phenyl) sulfone radical or biphenyl radical.
- diphenylmethane radical and the 2,2-diphenylpropane radical preference is given to the diphenylmethane radical and the 2,2-diphenylpropane radical.
- aromatic radicals are derived from bisphenol F or bisphenol A.
- alkylated aromatic diols A1 give readily processable compositions with particularly high strengths, in particular with high values in tensile strength measurements at temperatures of -35 ° C to 85 ° C.
- the alkoxylated aromatic diol A1 particularly preferably represents a propoxylated bisphenol A or a propoxylated bisphenol F, in particular a propoxylated bisphenol A. This gives compositions having particularly good adhesion properties, in particular at temperatures of 25.degree. C. to 85.degree.
- the alkoxylated aromatic diol A1 preferably has an average molecular weight in the range from 350 to 500 g / mol. These diols A1 allow particularly high strengths.
- the first component of the composition further comprises at least one aliphatic or cycloaliphatic diol A2 having a molecular weight in the range of 90 to 200 g / mol.
- the aliphatic or cycloaliphatic diol A2 is not a linear alkylenediol having two primary OH groups, in particular not 1,4-butanediol or 1,5-pentanediol.
- Such linear diols are disadvantageous in that compositions with lower
- Preferred diols A2 are branched alkylenediols, alkylenediols having a primary and a secondary hydroxyl group, and cycloaliphatic diols.
- the diol A2 is selected from the group consisting of 1, 3-butanediol, 2,3-butanediol, 2-methyl-1, 3-propanediol, 1, 2-pentanediol, 2,4-pentanediol, 2-methyl-1 , 4-butanediol, 2,2-dimethyl-1,3-propanediol
- the diol A2 is particularly preferably selected from the group consisting of 1,3-butanediol, 2,3-butanediol, 2-methyl-1,3-propanediol, 1,2-pentanediol, 2,4-pentanediol, 2-methyl- 1, 4-butanediol, 2,2-dimethyl-1,3-propanediol (neopentyl glycol), 1, 2-hexanediol, 3-methyl-1, 5-pentanediol, 1, 2-octanediol, 3,6-octanediol, 2 Ethyl 1, 3-hexanediol, 2, 2,4-trimethyl-1,3-pentanediol, 2-butyl-2-ethyl-1,3-propanediol, 2,7-dimethyl-3,6-octanediol, 1 , 4-cyclohexanedi
- diol A2 Arn most preferred as diol A2 is 2-ethyl-1,3-hexanediol. This diol enables compositions which give particularly high levels of tensile shear strength at high temperatures when cured.
- the first component of the composition furthermore comprises at least one polybutadiene polyol A3 having an average OH functionality in the range from 2.1 to 2.9, in particular 2.3 to 2.7, and an average molecular weight in the range from 2000 to 4000 g / mol, in particular 2500 to 3000 g / mol.
- Such polybutadiene polyols are particularly obtainable by the polymerization of 1,3-butadiene and allyl alcohol in a suitable ratio or by the oxidation of suitable polybutadienes.
- Suitable polybutadiene polyols are, in particular, polybutadiene polyols which contain structural elements of the formula (I) and, if appropriate, structural elements of the formulas (II) and (III).
- polybutadiene polyols available from Cray Valley under the trade name Poly bd R-45HTLO ® or Poly bd R-45M ®.
- polybutadiene polyols together with the diols A1 and A2, favor largely cured compositions
- the first component of the composition further comprises at least one polyether polyol A4 having an OH functionality in the range of 2.2 to 4 and an average molecular weight in the range of 400 to 4000 g / mol.
- Suitable polyether polyols are in particular polymerization products of ethylene oxide, 1, 2-propylene oxide, 1, 2- or 2,3-butylene oxide, oxetane or tetrahydrofuran, which are prepared by means of starter molecules having three or four OH or NH groups.
- Particularly suitable starter molecules are 1,1,1-trimethylolethane, 1,1,1-trimethylolpropane, glycerol and ethylenediamine.
- a particularly suitable polyether polyol A4 has an OH functionality in the range from 3.1 to 4 and an average molecular weight in the range from 1000 to 4000 g / mol, preferably 2000 to 4000 g / mol,
- polyether tetrol which has been started on ethylenediamine and has primary or secondary OH groups, in particular primary OH groups.
- a polyether tetrol enables compositions with very high strengths at high temperatures, in particular 85.degree.
- Another particularly suitable polyether polyol A4 has an OH functionality in the range from 2.2 to 3 and an average molecular weight in the range from 400 to 3000 g / mol, preferably from 400 to 2000 g / mol, in particular from 400 to 1000 g / mol.
- Such a polyether triol enables particularly high strengths at high temperatures, in particular 85 ° C.
- polyether polyol A4 is a polyether polyol A4 having an OH functionality in the range of 2.2 to 3 and an average molecular weight in the range of 400 to 1000 g / mol.
- Such Polyether triol allows very high strengths at high
- the diol A1 and the diol A2 are present in the composition in an amount such that the weight ratio A1 / A2 is in the range of 0.1 to 1, preferably 0.1 to 0.7, in particular 0.2 to 0.6. In this area, the composition has very good adhesion properties with high strength.
- diol A1, diol A2, polybutadiene polyol A3 and polyether polyol A4 are present in the composition in an amount such that the weight ratio (A3 + A4) / (A1 + A2) is in the range of 1.8 to 8, preferably 1 .8 to 5.5, more preferably 1 .8 to 5, most preferably 1 .8 to 3.
- the composition has a very high strength with good elasticity and a high
- the proportion of polybutadiene polyol A3 relative to all polyols present in the first component is in the range from 30 to 80% by weight, preferably 35 to 70% by weight, in particular 35 to 60% by weight.
- the composition contains a high proportion of polybutadiene polyol A3, although further polyols are present in addition to the diols A1 and A2 and the polybutadiene polyol A3 and the polyether polyol A4 in the first component.
- the high content of polybutadiene polyol A3 ensures the desired temperature-independent mechanical properties and high resistance to moisture of the described composition.
- the polyether polyol A4 is preferably present in the composition especially in such an amount that the weight ratio
- A4 / A3 in the range of 0.1 to 1, preferably 0.2 to 0.85, in particular 0.3 to 0.7, lies.
- Such a composition has particularly high strengths at high temperatures.
- the first component may additionally comprise a monoalcohol A5 having a molecular weight in the range from 140 to 340 g / mol, which contains in particular at least one ether group, wherein the monoalcohol A5 is present in such an amount that the Weight ratio A5 / (A1 + A2) in the range of 0.1 to 0.6, preferably 0.1 to 0.4, in particular 0.15 to 3, is located.
- the monoalcohol can improve the processability of the composition and the temperature independence of the tensile shear strength.
- Particularly suitable monoalcohol A5 are alkoxylated derivatives of phenol, in particular ethoxylated or propoxylated phenol. Particularly suitable as monoalcohol A5 is 1-phenoxy-2-propanol. Such a mono-alcohol may particularly lower the viscosity of the first component, which may be advantageous for the processability of the composition, and may improve the elastic properties in the cold.
- the composition is free of monoalcohol A5. This is advantageous in that thereby higher tensile shear strength values are obtained at low temperatures and at room temperature.
- the second component of the composition comprises at least one polyisocyanate.
- Suitable polyisocyanates are in particular monomeric di- or triisocyanates, as well as oligomers, polymers and derivatives of the monomeric di- or triisocyanates, as well as any desired mixtures thereof.
- Suitable aromatic monomeric di- or triisocyanates are in particular 2,4- and 2,6-toluene diisocyanate and any desired mixtures of these isomers (TDI), 4,4'-, 2,4'- and 2,2'-diphenylmethane diisocyanate and any desired mixtures of these isomers (MDI), mixtures of MDI and MDI homologs (polymeric MDI or PMDI), 1, 3- and 1, 4-phenylene diisocyanate, 2,3,5,6-tetramethyl-1, 4- diisocyanatobenzene, naphthalene-1, 5-diisocyanate (NDI), 3,3'-dimethyl-4,4'-diisocyanatodiphenyl (TODI), dianisidine diisocyanate (DADI), 1, 3,5-tris (iso-) cyanoatomethyl) benzene, tris (4-isocyanatophenyl) methane and tris (4-isocyanato-
- MDI preferred are MDI, TDI, HDI and IPDI.
- Suitable oligomers, polymers and derivatives of said monomeric di- and triisocyanates are in particular derived from MDI, TDI, HDI and IPDI.
- HDI biurets such as Desmodur ® N 100 and N 3200 (from Bayer), Tolonate ® HDB and HDB-LV (Rhodia) and Duranate 24A-100 ® (by Asahi Kasei); HDI-Isocyanurates such as Desmodur ® N 3300, N 3600 and N 3790 BA (all from Bayer), Tolonate ® HDT, HDT-LV and HDT-LV2 (from Rhodia), Duranate TPA-100 ® and THA-100 (of Asahi Kasei) and Coronate HX ® (from Nippon Polyurethane); HDI uretdiones as Desmodur ® N 3400 (Bayer); HDI Iminooxadi- a
- liquid at room temperature Forms of MDI (known as "modified MDI"), which oniminen mixtures of MDI with MDI derivatives, such as especially carbodiimides MDI or MDI Uret- or represent MDI urethanes known under trade names such as Desmodur ® CD, Desmodur PF ®, Desmodur ® PC (all from Bayer) ® or Isonate M 143 (Dow), as well as mixtures of MDI and MDI homologues (polymeric MDI or PMDI), available under trade names such as Desmodur ® VL, Desmodur ® VL50, Desmodur ® VL R10, Desmodur ® VL R20, Desmodur ® VH 20 N and Desmodur ® VKS 20F (all from Bayer), Isonate ® M 309, Voranate ® M 229 and Voranate ® M 580 (all from Dow) or Lupranat ® M 10 R (of BASF).
- modified MDI liquid at room temperature
- the abovementioned oligomeric polyisocyanates are usually mixtures of substances having different degrees of oligomerization and / or chemical structures, and preferably have an average NCO functionality of from 2.1 to 4.0 MDI, TDI, HDI and IPDI and oligomers, polymers and derivatives of said isocyanates, and mixtures thereof.
- the polyisocyanate preferably contains isocyanurate, iminooxadiazinedione, uretdione, biuret, allophanate, carbodiimide, uretonimine or oxadiazinetrione groups.
- liquid forms of MDI that are liquid at room temperature.
- polymeric MDI and MDI with proportions of oligomers or derivatives thereof.
- Mixtures of these isomers) of such liquid forms of MDI is in particular 50 to 95% by weight, in particular 60 to 90% by weight.
- polystyrene resin Especially preferred as the polyisocyanate is polymeric MDI and liquid MDI types which contain portions of MDI carbodiimides or their adducts.
- the polyisocyanate of the second component may contain fractions of isocyanate group-containing polyurethane polymers.
- the second component may comprise a separately prepared isocyanate group-containing polyurethane polymer, or the polyisocyanate has been mixed with at least one polyol, in particular a polyether polyol, wherein the isocyanate groups are present in a high stoichiometric excess over the OH groups.
- the second component contains only a small proportion of isocyanate group-containing polyurethane polymers, preferably not more than 30% by weight, more preferably not more than 20% by weight, in particular not more than 10% by weight, based on the sum of polyisocyanate and isocyanate groups comprising polyurethane polymers.
- the second component does not contain an isocyanate group-containing polyurethane polymer.
- Such a second component is particularly low viscosity, which allows a good processability of the composition, and it enables compositions with particularly high strengths.
- the polyurethane composition may additionally contain further isocyanate-reactive substances as constituent of the first component.
- the first component preferably contains no polyesterpolyols. Shares of polyester polyols typically cause a strong embrittlement of the cured composition in the cold, which is very undesirable for use as a structural adhesive with a temperature-independent as possible mechanical behavior in the temperature range of - 35 to 85 ° C.
- the first component does not contain castor oil-based polyols. These reduce the tensile shear strength of the composition to an undesirable extent.
- the first component is free of polyester polyols and of castor oil-based polyols.
- the polyurethane composition may contain catalysts which accelerate the reaction of hydroxyl groups with isocyanate groups, in particular tin, zinc, zirconium and bismuth organic metal catalysts, for example dibutyltin dilaurate, or tertiary amines, amidines or guanidines, for example 1, 4-diazabicyclo [2.2.2] octane (DABCO) or 1,8-diazabicyclo [5.4.0] undec-7-ene (DBU).
- DABCO 1, 4-diazabicyclo [2.2.2] octane
- DBU 1,8-diazabicyclo [5.4.0] undec-7-ene
- the tertiary amines, amidines or guanidines with phenol or carboxylic acids, in particular phenolic or other aromatic carboxylic acids can reversibly form a salt or a complex which is decomposed on increasing the temperature.
- the polyurethane composition may contain, as known to one skilled in the art from two-component polyurethane chemistry. These can be present in only one component or in both.
- Preferred further constituents are inorganic and organic fillers, in particular natural, ground or precipitated calcium carbonates, which are optionally coated with fatty acids, in particular stearic acid, barite, talc, quartz flour, quartz sand, dolomites, wollastonites, kaolins, calcined Kaolins, mica (potassium aluminum silicate), molecular sieves, aluminum oxides, aluminum hydroxides, magnesium hydroxide, silicic acids including highly dispersed silicas from pyrolysis processes, industrially produced carbon blacks, graphite, metal powders such as aluminum, copper, iron, silver or steel, PVC powder or hollow spheres.
- fatty acids in particular stearic acid, barite, talc, quartz flour, quartz sand, dolomites, wollastonites, kaolins, calcined Kaolins, mica (potassium aluminum silicate), molecular sieves, aluminum oxides, aluminum hydroxides, magnesium hydroxide, silicic acids including
- fillers is advantageous in that it increases the strength of the cured polyurethane composition.
- the polyurethane composition contains at least one filler selected from the group consisting of caricarbonate, kaolin, barite, talc, quartz powder, dolomite, wollastonite, kaolin, calcined kaolin and mica.
- drying agents such as, in particular, zeolites
- adhesion promoters such as, in particular, trialkoxysilanes, stabilizers against oxidation, heat, light and UV radiation
- flame-retardant substances flame-retardant substances
- surface-active substances in particular wetting agents and defoamers.
- a preferred polyurethane composition contains a first component which
- a preferred polyurethane composition contains a second component which is 90 to 100% by weight, especially 95 to 100
- % By weight of a liquid at room temperature forms of MDI.
- the first and second components are advantageously formulated such that their mixing ratio in parts by weight ranges from 10: 1 to 1: 1, in particular 7.5: 1 to 2: 1.
- the mixing ratio between the two components is preferably such that, in the mixed polyurethane composition, the ratio between the number of isocyanate groups and the number of isocyanate-reactive groups before curing is approximately in the range of from 1.2 to 1, preferably from 1.15 to 1.05 , lies.
- the preparation of the two components is carried out separately from each other and, at least for the second component, preferably in the absence of moisture. Both components are typically each stored in a separate container.
- the other components of the Polyurethane composition may be present as a constituent of the first or the second component, wherein isocyanate-reactive further constituents are preferably a constituent of the first component.
- a suitable container for storing the respective component is in particular a barrel, a hobble, a bag, a bucket, a can, a cartridge or a tube.
- the components are both storage stable, which means that they can be stored for several months to a year and longer before their use, without changing in their respective properties to a relevant extent for their use.
- the two components are stored separately prior to mixing the composition and mixed together only at or just prior to use. They are advantageously present in a packaging which consists of two separate chambers.
- the invention comprises a package consisting of a package with two separate chambers, each containing the first component or the second component of the composition.
- the mixing is typically done by static mixers or by means of dynamic mixers.
- static mixers or by means of dynamic mixers.
- dynamic mixers make sure that the two components are mixed as homogeneously as possible. If the two components are mixed incompletely, local deviations from the advantageous mixing ratio occur, which may result in a deterioration of the mechanical properties.
- a further subject of the invention is therefore also a cured polyurethane composition obtained from the curing of the polyurethane composition as described in this document.
- the two-component polyurethane composition described is advantageously usable as a structural adhesive or as a potting compound.
- the invention thus also relates to a method for bonding a first substrate to a second substrate, which comprises the steps:
- the two substrates may consist of the same or different materials.
- the invention thus furthermore also relates to a method for filling gaps and gaps between two substrates, comprising the steps:
- suitable substrates are in particular
- - glass, glass ceramic, glass mineral fiber mats - Metals and alloys, such as aluminum, iron, steel and non-ferrous metals, as well as surface-treated metals and alloys, such as galvanized or chromium-plated metals;
- coated and painted substrates such as powder-coated metals or alloys and painted sheets;
- Plastics such as polyvinyl chloride (hard and soft PVC), acrylonitrile-butadiene-styrene copolymers (ABS), polycarbonate (PC), polyamide (PA), poly (methyl methacrylate) (PMMA), polyesters, epoxy resins in particular epoxy-based thermosets, polyurethanes (PUR), polyoxymethylene (POM), polyolefins (PO), polyethylene (PE) or polypropylene (PP), ethylene / propylene copolymers (EPM) and ethylene / propylene / diene terpolymers (EPDM) ), wherein the plastics may preferably be surface treated by means of plasma, corona or flame;
- PUR polyurethanes
- POM polyoxymethylene
- PO polyolefins
- PE polyethylene
- PP polypropylene
- EPM ethylene / propylene copolymers
- EPDM ethylene / propylene / diene terpolymers
- CFRP carbon fiber reinforced plastics
- GRP glass fiber reinforced plastics
- sheet molding compounds such as carbon fiber reinforced plastics (CFRP), glass fiber reinforced plastics (GRP) and sheet molding compounds
- resins such as phenolic, melamine or epoxy resins, bonded wood materials, resin-textile composites and other so-called polymer composites; such as
- one or both of the substrates is preferably a metal or a glass ceramic or a glass or a glass fiber reinforced plastic or a carbon fiber reinforced plastic or an epoxy based thermoset.
- the substrates can be pretreated before applying the composition.
- pretreatments include in particular physical and / or chemical cleaning methods, as well as the application of an adhesion promoter, a primer solution or a primer. From the described method for bonding results in an article in which the composition connects two substrates together.
- This article is in particular a sandwich element of a lightweight structure, a structure, for example a bridge, an industrial good or a consumer good, in particular a window, a rotor blade of a wind turbine or a means of transport, in particular a vehicle, preferably an automobile, a bus, a truck Rail vehicle or a ship, as well as an airplane or a helicopter; or an attachment of such an article.
- the polyurethane composition described is characterized by high strength and elasticity, which are quite constant over a wide temperature range of -35 to 85 ° C, and good, largely temperature-independent, adhesion properties on metallic substrates. Because of these properties, it is particularly suitable as a structural adhesive for bonding, which under
- Another object of the invention is thus also the use of the described polyurethane composition as a structural adhesive for bonding two substrates.
- the cured composition is very hydrophobic and water-repellent. This can favor a high water vapor diffusion resistance of the material. As a result, the composition is also particularly suitable for bonds in which water vapor-sensitive components, for example electronic components, are to be adhesively sealed.
- the described polyurethane composition as potting compound, in particular as potting compound for filling gaps and joints, for repair purposes, as
- the polyurethane composition is further preferably used as a potting compound, in particular as an electro-potting compound.
- the invention therefore comprises the use of a two-component polyurethane composition as potting compound, in particular as an electrocasting compound.
- the invention includes a method of filling joints and gaps in a substrate comprising the steps
- substrates are metal, plastic, wood, glass, ceramics and fiber-reinforced plastics, in particular metal and plastics.
- the invention also includes a filled article, which has been filled according to the method described above.
- BPIP propoxylated bisphenol A average molecular weight about 400 g / mol, OH number 280 mg KOH / g (Simulsol TM BPIP / P from Seppic)
- Tetrol polyether polyol alkoxylated aliphatic amine with primary OH groups, OH functionality about 4, average molecular weight about 3700 g / mol, OH number 60 mg KOH / g
- Diol-1 polypropylene glycol diol average molecular weight about 400 g / mol, OH number about 260 mg KOH / g, (Voranol ® P 400 from Dow)
- Diol-2 EO-endcapped polypropylene glycol diol average molecular weight ca. 4000 g / mol, an OH number of about 27.5 mg KOH / g, (Voranol ® EP 1900 by Dow)
- the Tg values were determined by DMTA measurements on disc-shaped samples (thickness 2-3 mm, diameter 10 mm), which had been cured for 7 days under standard conditions (23 ° C., 50% relative humidity). with a Mettler DMA SDTA 861 e device. The measuring conditions were: measurement in shear, 10 Hz excitation frequency and heating rate of 5 K / min. The samples were cooled to -60 ° C. and heated to 200 ° C. while determining the complex shear modulus G * [MPa], with a maximum in the curve for the loss angle "tan ⁇ " being read off as the Tg value.
- Martens' heat distortion test according to Martens was performed according to DIN EN ISO 75-1 and -2 on samples with a size of 10 x 64 x 4 mm (+/- 0.2 mm ) with a bending stress of 1 .8 MPa.
- Tables 1 and 3 relate to the weight ratios of the existing diols A1, A2, polybutadiene polyol A3, polyether polyols A4 and monoalcohol A5 in the respective composition.
- % A3 of polyols refers to the proportion of polybutadiene polyol A3 based on all polyols present in the first component in% by weight.
- Z-i to Z-13 are examples according to the invention.
- Ref-1 to Ref-13 are comparative examples.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201480034444.5A CN105324403B (zh) | 2013-05-15 | 2014-05-14 | 双组分聚氨酯组合物 |
BR112015028505A BR112015028505A2 (pt) | 2013-05-15 | 2014-05-14 | composição de poliuretano de dois componentes |
US14/891,240 US9822289B2 (en) | 2013-05-15 | 2014-05-14 | Two component polyurethane composition |
EP14725099.7A EP2997062B1 (de) | 2013-05-15 | 2014-05-14 | Zweikomponentige polyurethanzusammensetzung |
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EP13167914.4 | 2013-05-15 | ||
EP13167914.4A EP2803685A1 (de) | 2013-05-15 | 2013-05-15 | Zweikomponentige Polyurethanzusammensetzung |
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US (1) | US9822289B2 (de) |
EP (2) | EP2803685A1 (de) |
CN (1) | CN105324403B (de) |
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WO (1) | WO2014184257A1 (de) |
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EP3339343A1 (de) * | 2016-12-23 | 2018-06-27 | Sika Technology Ag | Zweikomponentige polyurethanzusammensetzung |
EP3339345A1 (de) * | 2016-12-23 | 2018-06-27 | Sika Technology Ag | Zweikomponentige polyurethanzusammensetzung |
US20220064359A1 (en) * | 2019-03-18 | 2022-03-03 | Sika Technology Ag | Two-component polyurethane composition |
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US10450470B2 (en) * | 2013-11-26 | 2019-10-22 | Basf Se | Polyurethane elastomeric composition and method of preparing the same |
TWI791434B (zh) * | 2016-05-10 | 2023-02-11 | 美商陶氏全球科技有限責任公司 | 包括胺起始多元醇的雙組分無溶劑黏著劑組合物 |
TWI793073B (zh) * | 2016-05-10 | 2023-02-21 | 美商陶氏全球科技有限責任公司 | 包括胺引發的多元醇的雙組分無溶劑黏著劑組合物 |
TWI756219B (zh) * | 2016-05-10 | 2022-03-01 | 美商陶氏全球科技有限責任公司 | 包括胺引發之多元醇之雙組分無溶劑黏著劑組合物 |
EP3279231A1 (de) * | 2016-08-03 | 2018-02-07 | Sika Technology AG | Zweikomponentiger polyurethanklebstoff mit weitgehend temperaturabhängigen mechanischen eigenschaften und hoher festigkeit |
WO2018058479A1 (en) * | 2016-09-29 | 2018-04-05 | Dic Corporation | Adhesive, laminated film using the same and polyol composition for adhesive |
EP3333209B1 (de) * | 2016-12-07 | 2023-09-20 | Henkel AG & Co. KGaA | Thermoplastisches polyurethanmatrixharz |
EP3336116A1 (de) | 2016-12-16 | 2018-06-20 | Henkel AG & Co. KGaA | Zusammensetzungen mit einem fasermaterial und einem thermoplastischen bindemittel |
CN110352206A (zh) * | 2017-01-27 | 2019-10-18 | 陶氏环球技术有限责任公司 | 双组分无溶剂黏着剂组合物 |
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- 2014-05-14 WO PCT/EP2014/059875 patent/WO2014184257A1/de active Application Filing
- 2014-05-14 CN CN201480034444.5A patent/CN105324403B/zh active Active
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EP3178863A1 (de) | 2015-12-11 | 2017-06-14 | Evonik Degussa GmbH | Epoxidharz-zusammensetzungen zur herstellung von lagerstabilen composites |
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US11680131B2 (en) * | 2019-03-18 | 2023-06-20 | Sika Technology Ag | Two-component polyurethane composition |
Also Published As
Publication number | Publication date |
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CN105324403A (zh) | 2016-02-10 |
EP2803685A1 (de) | 2014-11-19 |
US20160090515A1 (en) | 2016-03-31 |
US9822289B2 (en) | 2017-11-21 |
EP2997062B1 (de) | 2017-12-06 |
EP2997062A1 (de) | 2016-03-23 |
BR112015028505A2 (pt) | 2017-07-25 |
CN105324403B (zh) | 2018-08-28 |
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