# US 8,541,512 B2 · Epoxy resin-based composition modified for impact resistance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,541,512 B2 - Document ID: US8541512B2 - Status: Granted - Kind: B2 - Application number: 13/361,061 - Filed: 2012-01-30 - Published: 2012-05-24 - Granted: 2013-09-24 - Earliest claimed: 2009-07-29 - Assignees: Henkel AG & Co. KGaA - Applicants: Rainer Schoenfeld; Emilie Barriau; Stefan Kreiling; Pablo Walter - Inventors: Rainer Schoenfeld; Emilie Barriau; Stefan Kreiling; Pablo Walter - Web page: https://patentgrep.com/patent/US8541512B2 ## CPC - C08G 59/226: {Mixtures of di-epoxy compounds} - C08L 63/00: Compositions of epoxy resins; Compositions of derivatives of epoxy resins - C09J 163/00: Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins - C08L 51/04: grafted on to rubbers - C08L 2666/02: Organic macromolecular compounds, natural resins, waxes or and bituminous materials - Y10T 428/31515: As intermediate layer - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A resin component for a one- or two-component adhesive, a matrix resin, or a structural foam, comprising: C1) at least one epoxy resin, having an average of more than one epoxy group per molecule, that does not correspond to the definition of component C2); C2) at least one oligomeric or polymeric urethane-group-free polyether compound. A one- or two-component epoxy adhesive, structural foam, or matrix material for composites, comprising the aforesaid resin components. ## Claims ### Claim 1 A resin component for a one- or two-component adhesive or a structural foam, comprising C1) at least one epoxy resin, having an average of more than one epoxy group per molecule, that does not correspond to the definition of component C2); C2) at least one oligomeric or polymeric urethane-group-free polyether compound encompassing one or more structural elements of the general formula (I) where n is a number from 5 to 10,000; each residue Ra in each repeating unit denotes, mutually independently, a divalent connecting group that encompasses 1 to 100 carbon atoms; and each residue A in each repeating unit is selected, mutually independently, from K or L, K denoting a divalent residue of aromatic dihydroxy compounds after removal of the two hydroxyl groups, and L denoting a divalent residue of polyethers after the removal of two terminal hydroxyl groups, with the provision that, based on the total number of all residues A in the oligomeric urethane-group-free polyether compound, 20 to 80% of all residues A denote K, and 20 to 80% of all residues A denote L, and having terminal epoxy groups and having an epoxy equivalent weight of between 1000 and 3000 g/mol, with continuously connected polypropylene oxide blocks of 5 to 18 C3H6O repeating units and aromatic blocks which contain at least one phenylene structural unit. ### Claim 2 (depends on 1) The resin component according to claim 1, wherein it does not comprise a benzoxazine compound. ### Claim 3 (depends on 1) The resin component according to claim 1, wherein it additionally comprises elastomer particles that have a core-shell structure. ### Claim 4 (depends on 1) The resin component according to claim 1, wherein it further comprises an impact modifier or toughener that is the reaction product of a carboxyl-group-containing copolymer based on butadiene-acrylonitrile with a stoichiometric excess of an epoxy resin in accordance with C1). ### Claim 5 (depends on 1) The resin component according to claim 1, wherein it further comprises an impact modifier or toughener that is the reaction product of an amino-group-containing polyether with a stoichiometric excess of an epoxy resin in accordance with C1). ### Claim 6 (depends on 1) A two-component adhesive whose first component is or comprises a resin component according to claim 1, and whose second component represents a hardener component that is or comprises at least one amino-group-containing compound or at least one thiol-group-containing compound. ### Claim 7 (depends on 6) An object that comprises at least two structural components that have been adhesively bonded with the two-component adhesive according to claim 6. ### Claim 8 (depends on 1) A thermally hardenable composition comprising a resin component according to claim 1 and C3) at least one latent hardener for component C1). ### Claim 9 (depends on 8) The thermally hardenable composition according to claim 8, wherein it additionally comprises C4) a physical or chemical blowing agent. ### Claim 10 (depends on 9) An object that comprises a foamed and cured composition according to claim 9. ### Claim 11 (depends on 8) An object that comprises at least two structural components that have been adhesively bonded with the thermally hardenable composition of claim 8. ### Claim 12 A resin component for a one- or two-component adhesive or a structural foam, comprising C1) at least one epoxy resin, having an average of more than one epoxy group per molecule, that does not correspond to the definition of component C2); C2) at least one oligomeric or polymeric urethane-group-free polyether compound encompassing one or more structural elements of the general formula (I) where n is a number from 5 to 10,000; each residue Ra in each repeating unit denotes, mutually independently, a divalent connecting group that encompasses 1 to 100 carbon atoms; and each residue A in each repeating unit is selected, mutually independently, from K or L, K denoting a divalent residue of aromatic dihydroxy compounds after removal of the two hydroxyl groups, and L denoting a divalent residue of polyethers after the removal of two terminal hydroxyl groups, with the provision that, based on the total number of all residues A in the oligomeric urethane-group-free polyether compound, 20 to 80% of all residues A denote K, and 20 to 80% of all residues A denote L, and that is the reaction product of polypropylene oxide diglycidyl ether having an epoxy equivalent weight between 170 and 400 g/mol, bisphenol A, and a diglycidyl ether of bisphenol A or bisphenol F having an epoxy equivalent weight between 156 and 550 g/mol and an epoxy equivalent weight of the reaction product between 1000 and 3000 g/mol. ### Claim 13 (depends on 12) The resin component according to claim 12, wherein it further comprises an impact modifier or toughener that is the reaction product of a carboxyl-group-containing copolymer based on butadiene-acrylonitrile with a stoichiometric excess of an epoxy resin in accordance with C1). ### Claim 14 (depends on 12) The resin component according to claim 12, wherein it does not comprise a benzoxazine compound. ### Claim 15 (depends on 12) The resin component according to claim 12, wherein it additionally comprises elastomer particles that have a core-shell structure. ### Claim 16 (depends on 12) The resin component according to claim 12, wherein it further comprises an impact modifier or toughener that is the reaction product of an amino-group-containing polyether with a stoichiometric excess of an epoxy resin in accordance with C1). ### Claim 17 (depends on 12) A two-component adhesive whose first component is or comprises a resin component according to claim 12, and whose second component represents a hardener component that is or comprises at least one amino-group-containing compound or at least one thiol-group-containing compound. ### Claim 18 (depends on 17) An object that comprises at least two structural components that have been adhesively bonded with the two-component adhesive according to claim 17. ### Claim 19 (depends on 12) A thermally hardenable composition comprising a resin component according to claim 12 and C3) at least one latent hardener for component C1). ### Claim 20 (depends on 19) The thermally hardenable composition according to claim 19, wherein it additionally comprises C4) a physical or chemical blowing agent. ### Claim 21 (depends on 20) An object that comprises a foamed and cured composition according to claim 20. ### Claim 22 (depends on 19) An object that comprises at least two structural components that have been adhesively bonded with the thermally hardenable composition of claim 19.