Patents by Inventor Yann Devorest
Yann Devorest has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20170073556Abstract: The present invention is related to an adhesive composition comprising a 50-95 wt % polymer blend and a tackifier. The blend has a first and second propylene-based polymer, both different homopolymers of propylene or a copolymer of propylene and ethylene or a C4 to C10 alpha-olefin. The blend has a melt viscosity, measured at 190° C., of 1,000 to 30,000 cP. The tackifier has a softening point of 95° C. to 115° C., an aromaticity of 3 mol % to 10 mol % aromatic protons, and a Cloud Point of 40° C. to 65° C.Type: ApplicationFiled: March 24, 2015Publication date: March 16, 2017Inventors: Ranjan Tripathy, Jennifer J. Austin, Yann Devorest, Thomas R. Barbee
-
Publication number: 20170058153Abstract: A method of preparing a hot melt adhesive composition, comprising (A) feeding a polymer blend into an extruder; wherein the polymer blend comprises (a) a first propylene-based polymer, wherein the first propylene-based polymer is a homopolymer of propylene or a copolymer of propylene and ethylene or a C4-C10 alpha-olefin; and (b) a second propylene-based polymer, wherein the second propylene-based polymer is a homopolymer of propylene or a copolymer of propylene and ethylene or a C4-C10 alpha-olefin; wherein the second propylene-based polymer is different than the first propylene-based polymer and wherein the polymer blend has a melt viscosity of 1,000 cP to 20,000 cP at 190° C.; (B) feeding one or more adhesive components, selected from at least one of a tackifier, wax, antioxidant, functionalized polyolefin, oil, and combinations thereof, into the extruder; and (C) recovering an extrudate from the extruder, wherein the extrudate is a hot melt adhesive composition.Type: ApplicationFiled: July 7, 2016Publication date: March 2, 2017Inventors: Jurgen J.M. Schroeyers, Jean-Roch H. Schauder, Yann Devorest, Rudi Bernaerts
-
Publication number: 20170015876Abstract: The present invention is related to an adhesive composition comprising (a) greater than about 65 wt % of a polymer blend and (b) a polar polyethylene components. The blend has a first and second propylene-based polymer, both different homopolymers of propylene or a copolymer of propylene and ethylene or a C4 to C10 alpha-olefin.Type: ApplicationFiled: May 26, 2016Publication date: January 19, 2017Inventors: Jurgen J.M. Schroeyers, James N. Coffey, Yann Devorest, Jennifer J. Austin
-
Patent number: 9359535Abstract: A multi-modal polymer blend for use in an adhesive composition comprising at least two compositionally different propylene-based polymers. The multi-modal polymer blend has a Mw of about 10,000 g/mol to about 150,000 g/mol. When subjected to Temperature Rising Elution Fractionation, the multi-modal polymer blend exhibits a first fraction that is soluble at ?15° C. in a hydrocarbon solvent, such as xylene or ortho-dichlorobenzene, the first fraction having an isotactic (mm) triad tacticity of about 70 mol % to about 90 mol %; and a second fraction that is insoluble or less soluble than the first fraction at ?15° C. in the hydrocarbon solvent, the second fraction having an isotactic (mm) triad tacticity of about 85 mol % to about 98 mol %.Type: GrantFiled: February 28, 2013Date of Patent: June 7, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: James N. Coffey, George Rodriguez, Phillip T. Matsunaga, Mun Fu Tse, Shawn W. Mowry, Jean-Roch H. Schauder, Yann Devorest, Jurgen J. M. Schroeyers, Joseph M. DeLucia
-
Patent number: 9238763Abstract: The present invention is related to adhesive compositions comprising a polymer blend of at least two different propylene-based polymers and one or more tackifiers. The polymer blend has a melt viscosity of about 900 cP to about 19,000 cP. When subjected to Temperature Rising Elution Fractionation, the polymer blend exhibits a first fraction that is soluble at ?15° C. in xylene, the first fraction having an isotactic (mm) triad tacticity of about 70 mol % to about 90 mol %; and a second fraction that is insoluble or less soluble than the first fraction at ?15° C. in xylene, the second fraction having an isotactic (mm) triad tacticity of about 85 mol % to about 98 mol %. The tackifier has a softening point, as determined by ASTM E-28, of about 85 to about 135° C. and an aromaticity of about 2 to about 12 mol % aromatic protons.Type: GrantFiled: October 9, 2014Date of Patent: January 19, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ranjan Tripathy, Jennifer J. Austin, James N. Coffey, Yann Devorest, Jurgen J. Schroeyers, Joseph M. Delucia
-
Publication number: 20150322303Abstract: A multi-modal polymer blend for use in an adhesive composition comprising at least two compositionally different propylene-based polymers. The multi-modal polymer blend has a Mw of about 10,000 g/mol to about 150,000 g/mol. When subjected to Temperature Rising Elution Fractionation, the multi-modal polymer blend exhibits a first fraction that is soluble at ?15° C. in a hydrocarbon solvent, such as xylene or ortho-dichlorobenzene, the first fraction having an isotactic (mm) triad tacticity of about 70 mol % to about 90 mol %; and a second fraction that is insoluble or less soluble than the first fraction at ?15° C. in the hydrocarbon solvent, the second fraction having an isotactic (mm) triad tacticity of about 85 mol % to about 98 mol %.Type: ApplicationFiled: February 28, 2013Publication date: November 12, 2015Inventors: James N. Coffey, George Rodriguez, Phillip T. Matsunaga, Mun Fu Tse, Shawn W. Mowry, Jean-Roch H. Schauder, Yann Devorest, Jurgen J.M. Schroeyers, Joseph M. DeLucia
-
Publication number: 20150247069Abstract: The present invention is related to adhesives comprising 75 to 95 wt % of a polymer blend and a tackifier. The polymer blend has a first propylene-based polymer that is a homopolymer of propylene or a copolymer of propylene and ethylene or a C4 to C10 alpha-olefin; and a second propylene-based polymer, different than the first propylene-based polymer, that is a homopolymer of propylene or a copolymer of propylene and ethylene or a C4 to C10 alpha-olefin. The blend has a melt temperature of 75 to 125° C.Type: ApplicationFiled: January 19, 2015Publication date: September 3, 2015Inventors: Jean-Roch Schauder, Jurgen J. M. Schroeyers, Yann Devorest, Vivian R. Feig
-
Publication number: 20150112014Abstract: The present invention is related to adhesive compositions comprising a polymer blend of at least two different propylene-based polymers and one or more tackifiers. The polymer blend has a melt viscosity of about 900 cP to about 19,000 cP. When subjected to Temperature Rising Elution Fractionation, the polymer blend exhibits a first fraction that is soluble at ?15° C. in xylene, the first fraction having an isotactic (mm) triad tacticity of about 70 mol % to about 90 mol %; and a second fraction that is insoluble or less soluble than the first fraction at ?15° C. in xylene, the second fraction having an isotactic (mm) triad tacticity of about 85 mol % to about 98 mol %. The tackifier has a softening point, as determined by ASTM E-28, of about 85 to about 135° C. and an aromaticity of about 2 to about 12 mol % aromatic protons.Type: ApplicationFiled: October 9, 2014Publication date: April 23, 2015Inventors: Ranjan Tripathy, Jennifer J. Austin, James N. Coffey, Yann Devorest, Jurgen J. Schroeyers, Joseph M. Delucia
-
Patent number: 8853327Abstract: A process for preparing a blend of thermoplastic polymer and resin modifier within a single-screw extruder, wherein the resin modifier is a hydrocarbon resin.Type: GrantFiled: August 19, 2011Date of Patent: October 7, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jay K. Keung, Yann Devorest, Chia Y. Cheng
-
Publication number: 20130281625Abstract: A process for preparing a blend of thermoplastic polymer and resin modifier within a single-screw extruder, wherein the resin modifier is a hydrocarbon resin.Type: ApplicationFiled: August 19, 2011Publication date: October 24, 2013Applicant: ExxonMobile Chemicals Patents Inc.Inventors: Jay K. Keung, Yann Devorest, Chia Yung Cheng
-
Patent number: 7615589Abstract: An elastomeric composition and method for making the same are provided. The composition can include a rubber component comprising one or more ethylene-propylene elastomers, one or more peroxide curing agents and one or more non-functionalized plasticizers having a viscosity index of 120 or more.Type: GrantFiled: February 2, 2007Date of Patent: November 10, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Alistair D. Westwood, Yann Devorest, Eric P. Jourdain, Olivier Georjon, Bryan R. Chapman, Michael C. Bulawa, Bruce R. Lundmark
-
Publication number: 20080188600Abstract: An elastomeric composition and method for making the same are provided. The composition can include a rubber component comprising one or more ethylene-propylene elastomers, one or more peroxide curing agents and one or more non-functionalized plasticizers having a viscosity index of 120 or more.Type: ApplicationFiled: February 2, 2007Publication date: August 7, 2008Inventors: Alistair D. Westwood, Yann Devorest, Eric P. Jourdain, Olivier Georjon, Bryan R. Chapman, Michael C. Bulawa, Bruce R. Lundmark
-
Patent number: 5627226Abstract: A composite is provided having improved toughness without reduction in stiffness comprising a polymer matrix having fibers embedded therein wherein the polymer of the matrix is substantially beta polypropylene or a beta polypropylene-olefin copolymer. The composite is made by combining a nucleating agent with a polymer composition selected from the group consisting of alpha polypropylene, an alpha polypropylene-olefin copolymer, alpha polypropylene containing fibers therein and an alpha polypropylene-olefin copolymer having fibers therein, and when the polymer is polypropylene or polypropylene-olefin copolymer, also independently adding fiber to the polymer or copolymer and thereafter inducing nucleation whereby a composite of improved stiffness with no reduction in toughness is formed.Type: GrantFiled: November 3, 1995Date of Patent: May 6, 1997Assignee: Exxon Research & Engineering CompanyInventors: Arnold Lustiger, Cary N. Marzinsky, Yann Devorest