Patents Assigned to Bostik SA
  • Patent number: 12195645
    Abstract: 1) Hot melt adhesive composition comprising: a) from 5% to 50% of a thermoplastic polymer (A) selected from styrene block copolymers and polyolefins; b) from 15% to 60% of a tackifying resin (B); c) from 5% to 30% of a plasticizer (C); and d) from 0.1% to 10% of a salt (D) of a hydroxylated fatty acid comprising from 8 to 24 carbon atoms. 2) Process of manufacturing a laminate, preferably a disposable nonwoven absorbent article, implementing the hot melt adhesive composition. 3) Process for cleaning the laminating device fouled by solid deposits of the hot melt adhesive composition, comprising their manual removal by the operators at room temperature.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: January 14, 2025
    Assignee: BOSTIK SA
    Inventor: Naji Hussein
  • Patent number: 12157784
    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), provided that at least one of the cyanoacrylate monomer(s) is a cyanoacrylate monomer comprising a group —X—O—Rb wherein X is a linear or branched alkylene radical optionally interrupted with one or several oxygen atom(s), and Rb is an alkyl group; ? a second part (component B) comprising: 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 at least one of the Michael acceptor(s) M comprises at least one group of formula —O(CHRa—CH2O)n— where n ranges from 1 to 10 (Michael acceptor M1), and Ra represents CH3 or H; and a nucleophilic initiator.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 3, 2024
    Assignee: BOSTIK SA
    Inventors: Ciaran McArdle, Arnau Pejoan Jimenez, Maria Campanya Illovet, Veronica De la Fuente Molina, Silvia Alujas Burgos
  • Patent number: 12152175
    Abstract: The present invention relates to a two-component composition comprising: —a composition A comprising: —at least one reducing agent; —at least one (meth)acrylate monomer; —a composition B comprising: —at least one oxidising agent; and—optionally at least one (meth)acrylate monomer; the composition being characterised in that: —it comprises at least one radical photoinitiator in composition A and/or B; —it comprises at least one polymerisation inhibitor in an amount less than or equal to 0.3% by weight relative to the total weight of the composition.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: November 26, 2024
    Assignees: BOSTIK SA, UNIVERSITE DE HAUTEALSACE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Guillaume Michaud, Frédéric Simon, Stéphane Fouquay, Jacques Lalevee
  • Patent number: 12098310
    Abstract: The invention relates to a hot-melt adhesive composition, comprising at least one polyolefin polymer at a content from 5 to 90% by weight; at least one branched polypropylene at a content from 0.1 to 10% by weight; at least one tackifying resin at a content from 0.1 to 60% by weight; optionally, at least one styrene block copolymer from 0 to 30% by weight; optionally, at least one plasticizer at a content from 0 to 30% by weight; optionally, at least one stabilizer at a content from 0 to 5% by weight; and optionally, at least one wax at a content from 0 to 30% by weight. The invention further relates to the use of a branched polypropylene for reducing stringing of a hot-melt adhesive composition.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: September 24, 2024
    Assignee: BOSTIK SA
    Inventors: Hiroyuki Nakatani, Tsuyoshi Yamanoue
  • Patent number: 12091488
    Abstract: The invention relates to a composition comprising: an NCO component comprising: A) at least one polyurethane comprising at least two NCO terminal groups produced by an addition polymerisation reaction of at least one dissymetric diisocyanate and at least one polyol, and B) at least one polyisocyanate comprising at least three NCO isocyanate functions, selected from the group consisting of biurets, isocyanurates, adducts of diisocyanates and of triols, and the mixtures thereof; and an OH component comprising: at least one polyol; and a total content of filler(s) higher than or equal to 35 wt. %, in relation to the total weight of said OH component.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: September 17, 2024
    Assignee: BOSTIK SA
    Inventors: Guillaume Michaud, Aurélien Wiegand
  • Patent number: 12077692
    Abstract: 1) An HMPSA composition comprising: from 20% to 50% by weight of a composition of styrene block copolymers; from 35% to 65% by weight of one or more tackifying resins; and from 7% to 25% by weight of a plasticizer consisting of a composition comprising a stand oil of a vegetable oil. 2) A multilayer system comprising: an adhesive layer (A) consisting of said HMPSA composition; a printable support layer (B) adjacent to the adhesive layer (A); and a nonstick protective layer (C), adjacent to the adhesive layer (A). 3) The use of said multilayer system for the manufacture of self-adhesive articles.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: September 3, 2024
    Assignee: BOSTIK SA
    Inventors: Christophe Robert, Amandine Rafaitin, Lahoucine Idttalbe
  • Patent number: 12065593
    Abstract: The present invention relates to a composition comprising: —an —NCO component comprising: A) at least one polyurethane comprising at least two NCO end groups obtained by polyaddition reaction: of a composition comprising at least one diisocyanate, of a composition comprising at least one polyol, B) at least one polyisocyanate comprising at least three isocyanate NCO functions, selected from the group consisting of biurets, of isocyanurates, of adducts of diisocyanates and triols, and of mixtures thereof; an —OH component comprising: at least two polyols P1 having a number-average molecular weight of strictly less than 500 g/mol and at least one polyol P2 having a number-average molecular weight of strictly greater than 1000 g/mol, said composition comprising at least one rheology agent.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: August 20, 2024
    Assignee: Bostik SA
    Inventors: Saïda Muller-Sellak, Adeline Brunel
  • Patent number: 12060504
    Abstract: 1) Hot melt adhesive composition comprising: —from 30% to 55% of a composition (A) consisting of 2 copolymers of propylene and ethylene (A1) and (A2), with Mw of less than 100,000 Da, wherein: —(A1) is an essentially amorphous copolymer, with a DSC melt enthalpy of 10 less than 30 J/g; —(A2) is a semicrystalline copolymer with a DSC melt enthalpy of more than 30 J/g; and —the ratio:weight of (A2)/weight of (A1) is from 0.2 to 1.5; —from 20% to 50% of a tackifying resin (B); and 1 —from 2% to 25% of a plasticizer (C) consisting of a liquid polybutene oligomer. 2) Process of manufacturing an assembly product, preferably a disposable nonwoven absorbent article, implementing said hot melt adhesive composition.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: August 13, 2024
    Assignee: BOSTIK SA
    Inventors: Naji Hussein, Stéphanie Komar, Bénédicte Delory, Magali Mangeant
  • Patent number: 12049555
    Abstract: The subject of the present invention relates to an improved high performance, hot melt, single-component sealant composition comprising: (a) an elastomer selected from butyl rubber, polyisobutylene rubber, ethylene-propylene rubber, and mixtures thereof, (b) an inorganic filler, and (c) an adhesion promoter comprising an epoxy-based silane and an amino-based silane, wherein the weight ratio between the epoxy-based silane and the amino-based silane ranges from 60/40 to 90/10. The present invention also relates to the use of said sealant composition as an edge sealant in insulating glass structures, such as windows or doors. Finally, the invention relates to an insulated glass structure comprising a sealant composition according to the invention.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: July 30, 2024
    Assignee: BOSTIK SA
    Inventors: Peadar McCready, Sylwia Druzdz, Matthew Thomas
  • 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: 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: 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: 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