Patents Assigned to Bostik SA
  • Patent number: 11945829
    Abstract: The present invention relates to a compound of formula (I): and also to the process for preparing same, and to the uses thereof. The present invention also relates to the polyurethanes obtained from the compounds of formula (I), and also to the uses of said polyurethanes.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: April 2, 2024
    Assignee: Bostik SA
    Inventors: Boris Colin, Guillaume Michaud, Stéphane Fouquay, Frédéric Simon
  • Patent number: 11939493
    Abstract: The present invention concerns a two-part curable composition comprising: ?a first part (component A) comprising: —at least 51% by weight based on the total weight of the first part, of one or more cyanoacrylate monomer(s); —a transition metal complex; and —an antioxidant; ?a second part (component B) comprising: —a per-compound; —at least one Michael acceptor M selected from the group consisting of (meth)acrylic monomers, (meth)acrylic functionalized oligomers, (meth)acrylic functionalized resins, and mixtures thereof; provided that the composition comprises (in the first part and/or in the second part) at least one compound C comprising a radical -EWG1-CH2-EWG2- wherein EWG2 and EWG1 are independently of each other an electron withdrawing group.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: March 26, 2024
    Assignee: BOSTIK SA
    Inventors: Ciaran McArdle, Arnau Pejoan Jimenez, Patxi Garra, Vladimir Tchaplinski, Marta Rodriguez Ble, Jordi Solera Sendra, Maria Campanyá I Llovet
  • Patent number: 11920065
    Abstract: A self-adhesive article comprises an adhesive layer comprising a crosslinked adhesive composition, which comprises at least one polysilylated polymer having a number-average molar mass (Mn) of at least 20000 g/mol, wherein the at least one polysilylated polymer comprises a polyether and/or polyurethane main chain and at least two hydrolysable silylated end groups, said silylated end groups being attached to the main chain of the polymer by a urethane or ether function (referred to as a connector group); at least one tackifying resin having an average hydroxyl number of less than or equal to 100; and at least one crosslinking catalyst, excluding any monosilylated polymer.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: March 5, 2024
    Assignee: BOSTIK SA
    Inventors: David Goubard, Olivier Laferte
  • Patent number: 11912000
    Abstract: 1) Multilayer film comprising 2 thin layers D and E of a thermoplastic material bonded together by a continuous layer A consisting of a hot-melt pressure-sensitive adhesive composition comprising: from 40% to 70% by weight of a composition of styrene block copolymers consisting of a mixture of diblock and triblock copolymers; and from 30% to 60% by weight of one or more tackifying resins; said multilayer film being such that the adhesive layer A is: connected to the layer D by means of a tie layer B, and connected to the layer E by means of a tie layer C, each of the 2 layers B and C respectively consisting of a composition (b) and (c) each comprising: a polyolefin (P) chosen from a polyethylene (PE) and a polypropylene (PP), optionally modified with an unsaturated carboxylic anhydride; and at least one elastomer compound (EL) chosen from a copolymer of ethylene and of propylene (EL1) and a styrene block copolymer (EL2) comprising at least one elastomer block.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: February 27, 2024
    Assignee: BOSTIK SA
    Inventors: Romain Puchois, Christophe Robert
  • Patent number: 11873429
    Abstract: A hot-melt pressure-sensitive adhesive composition comprises: a) at least one polyurethane comprising at least two end functional groups T of following formula (I): —X—(C?O)—CH(RV)?CH2??(I) b) at least one tackifying resin chosen from the following resins: (b1) terpene/phenolic resins; (b2) the resins resulting from the polymerization of ?-methylstyrene, optionally followed by a reaction with at least one phenol; (b3) the polymeric resins (optionally at least partially hydrogenated) resulting from mainly C9 aromatic fractions; and c) at least one polymerization inhibitor. The polyurethane(s) (a): tackifying resin(s) (b) ratio by weight ranges from 4:6 to 6:4. The said polyurethane (a) has a mean functionality of functional groups of formula (I) strictly of greater than 1.9.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: January 16, 2024
    Assignee: Bostik SA
    Inventors: Guillaume Michaud, Aurelien Wiegand, Stephane Fouquay
  • Patent number: 11845830
    Abstract: The present invention relates to a method for producing a composition comprising at least one polyurethane with NCO end groups, and at least one catalyst B selected from among tertiary amines, said method comprising the following steps: a) production of a polyurethane with NCO end groups, comprising a step of polyaddition of a polyol composition and a polyisocyanate composition, in the presence of at least one catalyst A selected from the group consisting of—organo-metallic catalysts excluding tin-based catalysts, —tertiary amines, and—mixtures of same; and b) the addition of at least one catalyst B, selected from among tertiary amines, to the polyurethane with NCO end groups obtained in step a).
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: December 19, 2023
    Assignees: BOSTIK SA, UNIVERSITE CLAUDE BERNARD LYON 1, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, CPE LYON FORMATION CONTINUE ET RECHERCHE—CPE LYON FCR
    Inventors: Federico Sanz, Guillaume Michaud, Frédéric Simon, Jean Raynaud, Vincent Monteil, Lionel Bosco
  • Patent number: 11834546
    Abstract: The invention relates to a composition comprising: —a composition A containing at least one polyurethane comprising at least two terminal functions T of formula (I): and —a composition B comprising at least one amine. Also disclosed is the use of said composition.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: December 5, 2023
    Assignee: Bostik SA
    Inventors: Guillaume Michaud, Frédéric Simon, Stéphane Fouquay
  • Patent number: 11834429
    Abstract: The invention relates to a monoethylenically unsaturated monomer of formula (I), and to the use thereof for producing a polymer. The invention also relates to the polymer obtained by polymerising said monomer, and to the use thereof in a composition for producing coatings.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: December 5, 2023
    Assignees: BOSTIK SA, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE RENNES 1
    Inventors: Guillaume Michaud, Stéphane Fouquay, Frédéric Simon, Cyril Chauveau, Sophie Guillaume, Jean-François Carpentier
  • Patent number: 11780952
    Abstract: The present invention provides a process for the synthesis of silylated polyurethanes, comprising three sequential steps, a step (i) of preparing NCO-terminated polyurethane, a step (ii) of partial grafting of the NCO functions with silane functions and a step (iii) of total grafting of the residual NCO functions with functions that react with the NCO functions by means of polyfunctional compounds. The present invention also provides a silylated polyurethane composition that can be obtained by means of the process according to the invention, an adhesive composition comprising said silylated polyurethane composition and a self-adhesive item obtained from the adhesive composition according to the invention.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: October 10, 2023
    Assignee: Bostik SA
    Inventor: Olivier Laferte
  • Publication number: 20230250579
    Abstract: The use, for seamless textile assembly by printing, of a copolyamide including: a) at least one hard segment obtained by polycondensation of at least one of the following: (i) an ?,?-aminocarboxylic acid; (ii) a lactam; and/or (iii) an aliphatic diacid with 6 to 22 carbon atoms and at least one aliphatic diamine with 2 to 14 carbon atoms, and, optionally, b) at least one soft segment obtained by polycondensation of at least one diacid with 4 to 44 carbon atoms with at least one diamine chosen from diamines with 2 to 44 carbon atoms and polyoxyalkylene diamines, the copolyamide having a melting temperature Tm above 80° C. and below 210° C. and a viscosity at 170° C., as measured according to standard ASTM D3236-88 (2009), using a Brookfield rheometer with SC 4-27 spindle, of between 5 Pa·s and 100-200 Pa·s.
    Type: Application
    Filed: July 23, 2021
    Publication date: August 10, 2023
    Applicants: ARKEMA FRANCE, BOSTIK SA
    Inventors: Thomas PRENVEILLE, Quentin PINEAU, Sophie CHHUN
  • Patent number: 11708511
    Abstract: A multicomponent adhesive composition comprises a composition A and a composition B. Composition A comprises at least one silyl polymer comprising at least one hydrolyzable alkoxysilane group and at least one tackifying resin. Composition B comprises at least one catalyst and at least one compound C chosen from a compound C1 with a number-average molecular mass ranging from 300 g/mol to 500 000 g/mol; and a compound C2 with a vapor pressure at 20° C. of greater than or equal to 0.08 kPa; and mixtures thereof. The composition A:composition B mass ratio ranges from 99.98:0.02 to 60:40. The total content of catalyst ranges from 0.01% to 10% relative to the total weight of said adhesive composition.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 25, 2023
    Assignee: BOSTIK SA
    Inventors: Olivier Laferte, Claire Garnier, Régis Guillotte, Jean-Marie Bordat
  • Patent number: 11708515
    Abstract: The invention relates to an adhesive dual-component composition based on polyurethane, comprising an —NCO component and an —OH component such that: the —NCO component is a composition comprising: A) at least one polyurethane prepolymer comprising at least two NCO terminal groups obtained by the polyaddition reaction of at least one dissymmetric diisocyanate monomer and at least one diol, and B) at least one triisocyanate selected from isocyanurates, biurets, diisocyanate and triol adducts, and the mixtures thereof; the —OH component is a composition comprising at least one polyol; at least one of the polyols or diols is selected from polyether polyols (or polyether diols); at least one of the polyols or diols is selected from polyester polyols (or polyester diols); and the weight ratio of the quantity of polyether polyol(s) to the quantity of polyester polyol(s), defined as r4, ranges from 0.6 to 2.2.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: July 25, 2023
    Assignee: BOSTIK SA
    Inventors: Francis Pardal, Guillaume Michaud, Aurélien Wiegand, David Penet
  • Patent number: 11674057
    Abstract: The present invention relates to a heat-crosslinkable adhesive composition comprising: —from 20% to 84% by weight of composition (A); —from 15% to 79% by weight of a compatible tackifying resin (B), —from 0.01% to 5% by weight of a crosslinking catalyst (C). The invention also relates to a self-adhesive item obtained by preheating said composition, coating on a support layer, then crosslinking by heating.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: June 13, 2023
    Assignee: BOSTIK SA
    Inventor: David Goubard
  • Patent number: 11624006
    Abstract: Adhesive sealant composition comprising at least one moisture-crosslinkable prepolymer and, as plasticizing agent, an ester compound of formula (I): in which: R1, R2 and R3 represent an oxycarbonylalkyl radical of 4 to 20 carbon atoms; R4 represents a hydrogen atom, a methyl or ethyl radical or else a radical: —CH2—R5 in which R5 represents an oxycarbonylalkyl radical of 4 to 20 carbon atoms.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: April 11, 2023
    Assignee: BOSTIK SA
    Inventor: Federico Sanz
  • Patent number: 11492518
    Abstract: A hot-melt adhesive composition comprises a mixture of silylated polymers, a tackifying resin and a catalyst, in specific contents, having self-adhesive properties after crosslinking to moisture. A self-adhesive article comprises a support layer and at least one self-adhesive layer obtained after crosslinking to the moisture in the adhesive composition according to the invention. The self-adhesive article can be used to bond low-energy substrates, in particular plastic substrates, notably thermoplastic substrates having low surface energy.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: November 8, 2022
    Assignee: BOSTIK SA
    Inventors: David Goubard, Olivier Laferte
  • Patent number: 11414516
    Abstract: 1) Hydrocarbon-based copolymer comprising two end groups preceded by an ester function and chosen from a 2-oxo-1,3-dioxolan-4-yl (or cyclocarbonate), a dithiocyclocarbonate, an exo-vinylene cyclocarbonate and a 2-oxo-1,3-dioxolen-4-yl, the main chain of which comprises units (I) and (II) in which R0 is notably a methyl radical; and the number-average molecular mass Mn of which is between 400 and 100 000 g/mol. 2) Process for preparing said copolymer, comprising: (i) a step of heating a statistical bipolymer A chosen from a poly(butadiene-isoprene), a poly(butadiene-myrcene) and a poly(butadiene-farnesene); and then (ii) a step of heating the product formed, in the presence of a chain-transfer agent. 3) Use as adhesive, as a mixture with an amine compound comprising at least two amine groups.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 16, 2022
    Assignees: BOSTIK SA, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE RENNES 1
    Inventors: Guillaume Michaud, Stephane Fouquay, Frederic Simon, Sophie Guillaume, Jean-Francois Carpentier, Cyril Chauveau
  • Patent number: 11352531
    Abstract: 1) Two-component polyurethane-based adhesive composition comprising an —NCO component and an —OH component, such that: the —NCO component is obtained by polyaddition between MDI and a composition of polyols comprising a polyether diol and a polyether triol, in an —NCO/—OH molar equivalent ratio of between 2.5 and 6.5; the —OH component is obtained by polyaddition between MDI and a composition of polyols with a functionality of 2 comprising an aliphatic polyester diol, a partially aromatic polyester diol and an aliphatic polyether diol, in an —NCO/—OH molar equivalent ratio of between 0.05 0.50; the amounts of the —NCO and —OH components being such that the —NCO/—OH molar equivalent ratio is within a range extending from 1.5 to 1.7. 2) Multilayer film comprising 2 thin layers of material linked to one another by a continuous layer constituted by said crosslinked adhesive composition. 3) Process for preparing said film and use thereof in the manufacture of flexible packagings.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: June 7, 2022
    Assignee: BOSTIK SA
    Inventors: Francis Pardal, David Penet
  • Patent number: 11345836
    Abstract: The invention relates to an adhesive dual-component composition based on polyurethane, comprising an —NCO component and an —OH component such that: the —NCO component is a composition comprising A) at least one polyurethane prepolymer comprising at least two NCO terminal groups obtained by polyaddition reaction of at least one aliphatic polyisocyanate selected from aliphatic diisocyanate monomers and mixtures of at least one aliphatic diisocyanate monomer with at least one triisocyanate based on XDI, and at least one polyester diol, and B) at least one triisocyanate based on XDI; and the —OH component is a composition comprising at least one polyester polyol. The invention relates to a method for producing a multilayer structure implementing an adhesive composition according to the invention, as well as to the use of such a structure in the field of flexible packaging.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: May 31, 2022
    Assignee: BOSTIK SA
    Inventor: Guillaume Michaud
  • Patent number: 11279860
    Abstract: The invention relates to an adhesive composition that can be activated at a low temperature (from 110° C., preferably from 100° C.) and is available in the form of a film, and to the method for the production thereof. The invention also relates to a composition comprising at least one specific polyester polyol and at least one specific polyisocyanate dispersible in said polyester polyol in the presence of at least one specific organic solvent, and to the use of said composition for producing an adhesive composition that can be activated at a low temperature and is available in the form of a film.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 22, 2022
    Assignee: BOSTIK SA
    Inventors: Guillaume Michaud, Aurélien Wiegand
  • Patent number: 11279786
    Abstract: 1) Hydrocarbon-based copolymer comprising two end groups preceded by an ether function and chosen from a 2-oxo-1,3-dioxolan-4-yl (or cyclocarbonate), a dithiocyclocarbonate, and a 2-oxo-1,3-dioxolen-4-yl, the main chain of which comprises units (I) and (II) in which R0 is notably a methyl radical; and the number-average molecular mass Mn of which is between 400 and 100 000 g/mol. 2) Process for preparing said copolymer, comprising: (i) a step of heating a statistical bipolymer A chosen from a poly(butadiene-isoprene), a poly(butadiene-myrcene) and a poly(butadiene-farnesene); and then (ii) a step of heating the product formed, in the presence of a chain-transfer agent. 3) Use as adhesive, as a mixture with an amine compound comprising at least two amine groups.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: March 22, 2022
    Assignees: BOSTIK SA, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE RENNES 1
    Inventors: Guillaume Michaud, Stephane Fouquay, Frederic Simon, Sophie Guillaume, Jean-Francois Carpentier, Cyril Chauveau