Patents by Inventor Stephen H. Cree

Stephen H. Cree 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: 20230091053
    Abstract: The present disclosure provides a composition. The composition is crosslinkable and includes an ethylene silane-copolymer, an oil-extended ethylene-propylene-diene monomer (EPDM), and a crosslink catalyst. The present disclosure also provides the composition after crosslinking. In an embodiment, a crosslinked composition is provided and includes from 55 wt % to 85 wt % of an ethylene-silane copolymer and from 15 wt % to 45 wt % of an oil-extended EPDM. The crosslinked composition has: (a) a flexural modulus of 50 MPa to 160 MPa; and (b) a hot set elongation greater than 10%. The crosslinked composition can be used as a coating for a coated conductor.
    Type: Application
    Filed: December 28, 2020
    Publication date: March 23, 2023
    Inventor: Stephen H. CREE
  • Publication number: 20220325015
    Abstract: A polymeric composition including in weight percent of the polymeric composition: (a) 10 wt % to 30 wt % of a polyolefin elastomer; (b) 1 wt % to 20 wt % of a polypropylene-based polymer; (c) greater than 1 wt % to 20 wt % of a crystalline block composite; (d) 1 wt % to 10 wt % of a maleated polyolefin elastomer; and (e) 40 wt % to 80 wt % of a halogen free flame-retardant filler.
    Type: Application
    Filed: December 7, 2020
    Publication date: October 13, 2022
    Inventors: Krischan Jeltsch, Stephen H. Cree
  • Patent number: 11236220
    Abstract: A crosslinkable low density polyethylene blend composition, cured product made therefrom, methods of making and using same, and articles containing same.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: February 1, 2022
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Stephen H. Cree, Mikhail Bogdanov
  • Patent number: 10513609
    Abstract: Crosslinkable polymeric compositions comprising (a) a polyolefin elastomer having hydrolysable silane groups, (b) a hydroxyl-terminated polysiloxane, (c) a polyalkoxy silane compatibilizer, and (d) a condensation catalyst. Also described are methods for preparing such crosslinkable polymeric compositions, processes for crosslinking such polymeric compositions, and the resulting crosslinked polymeric compositions themselves. Such compositions can be employed in a variety of articles of manufacture, particularly in the wire and cable industry.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: December 24, 2019
    Assignee: Dow Global Technologies LLC
    Inventor: Stephen H. Cree
  • Patent number: 10259930
    Abstract: A composition comprising: A. 91.5 to 97.9% of a crosslinkable ethylene-based polymer, e.g., LDPE; B. 1 to 3% of an organic peroxide, e.g., dicumyl peroxide; C. 1 to 5% of a dielectric fluid, e.g., an alkylated naphthalene; and D. 0.1 to 0.5% of a coagent such as AMSD. The compositions exhibit high cure rates without any significant reduction in scorch resistance, heat ageing and electrical performance, and are particularly useful as insulation sheaths for medium and high voltage power cables.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: April 16, 2019
    Assignee: Dow Global Technologies LLC
    Inventor: Stephen H. Cree
  • Patent number: 9758638
    Abstract: A composition comprising: A. 91.5 to 97.9% of a crosslinkable ethylene-based polymer, e.g., LDPE; B. 1 to 3% of an organic peroxide, e.g., dicumyl peroxide; C. 1 to 5% of a dielectric fluid, e.g., an alkylated naphthalene; and D. 0.1 to 0.5% of a coagent such as AMSD. The compositions exhibit high cure rates without any significant reduction in scorch resistance, heat ageing and electrical performance, and are particularly useful as insulation sheaths for medium and high voltage power cables.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: September 12, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventor: Stephen H. Cree
  • Publication number: 20170233546
    Abstract: A composition comprising: A. 91.5 to 97.9% of a crosslinkable ethylene-based polymer, e.g., LDPE; B. 1 to 3% of an organic peroxide, e.g., dicumyl peroxide; C. 1 to 5% of a dielectric fluid, e.g., an alkylated naphthalene; and D. 0.1 to 0.5% of a coagent such as AMSD. The compositions exhibit high cure rates without any significant reduction in scorch resistance, heat ageing and electrical performance, and are particularly useful as insulation sheaths for medium and high voltage power cables.
    Type: Application
    Filed: May 4, 2017
    Publication date: August 17, 2017
    Inventor: Stephen H. Cree
  • Publication number: 20160108239
    Abstract: Crosslinkable polymeric compositions comprising (a) a polyolefin elastomer having hydrolysable silane groups, (b) a hydroxyl-terminated polysiloxane, (c) a polyalkoxy silane compatibilizer, and (d) a condensation catalyst. Also described are methods for preparing such crosslinkable polymeric compositions, processes for crosslinking such polymeric compositions, and the resulting crosslinked polymeric compositions themselves. Such compositions can be employed in a variety of articles of manufacture, particularly in the wire and cable industry.
    Type: Application
    Filed: June 2, 2014
    Publication date: April 21, 2016
    Applicant: Dow Global Technologies LLC
    Inventor: Stephen H. Cree
  • Publication number: 20150267036
    Abstract: A composition comprising: A. 91.5 to 97.9% of a crosslinkable ethylene-based polymer, e.g., LDPE; B. 1 to 3% of an organic peroxide, e.g., dicumyl peroxide; C. 1 to 5% of a dielectric fluid, e.g., an alkylated naphthalene; and D. 0.1 to 0.5% of a coagent such as AMSD. The compositions exhibit high cure rates without any significant reduction in scorch resistance, heat ageing and electrical performance, and are particularly useful as insulation sheaths for medium and high voltage power cables.
    Type: Application
    Filed: September 5, 2013
    Publication date: September 24, 2015
    Inventor: Stephen H. Cree
  • Patent number: 9115620
    Abstract: The present invention relates to a flexible polyolefin composition, a sheet made therefrom, and a formed textured skin for applications such as interior furnishings of an automobile and a process to make such composition, sheet, and textured skin. Specifically said composition comprises an extrudable cross-linkable polyolefin composition comprising: (i) from 60 to 75 weight percent of one or more one silane cross-linkable polyolefin polymer; (ii) a moisture-cure condensation catalyst; and (iii) from 25 to 40 weight percent of one or more polyolefin polymer elastomer. Preferably an extruded sheet of said composition is formed into a textured skin, preferably by positive vacuum forming.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: August 25, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Teodora Doneva, Stephen H. Cree
  • Publication number: 20140041365
    Abstract: A fuel reforming system, process, and device including a catalytic chamber and a heating chamber. The catalytic chamber, further including a fluid fuel intake and a gaseous fluid exit port and at least one heat exchanger for distributing heat between the heating chamber and the catalytic chamber. The catalytic chamber further including a screen member having a surface, wherein the member includes a catalytic deposit made from a combination of platinum and rhodium alloy. A catalytic conversion of converting liquid fuel to gaseous fuel occurs within the catalytic chamber. Fuel exits the fuel reforming device through a gaseous fluid exit port. In the process of phase change from liquid to gaseous phase, there is no change of chemical composition and C8H18 remains stable throughout, except for an increase in Enthalpy (heat content) per mol.
    Type: Application
    Filed: February 1, 2012
    Publication date: February 13, 2014
    Applicant: Dow Global Technologies LLC
    Inventors: Teodora Doneva, Stephen H. Cree
  • Patent number: 8525028
    Abstract: Highly-mineral-filled, halogen-free, flame-retardant compositions made from or containing a polypropylene thermoplastic elastomer, a polypropylene, a metal hydroxide filler, and a polar-monomer-grafted polyolefin elastomer compatibilizer. Such compositions can be employed in preparing various articles of manufacture, including extruded articles and coated conductors, such as cables.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: September 3, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Stephen H. Cree, Gerrit Groot-Enzerink
  • Patent number: 8445786
    Abstract: Compositions having at least 60 weight percent, based on the total weight of polymers, have at least one silane crosslinkable polyolefin resin and up to about 40 weight percent, based on the total weight of polymers, of at least one polyolefin elastomer resin, wherein the polyolefin polymer elastomer resin has density of less than or equal to about 0.89 g/cm3 and a melt index, I2, of less than about 50 g/10 mm. and which has been prepared using at least one metallocene catalyst provide improved flexibility, especially low temperature flexibility, while maintaining suitable cure performance and strength compared to the silane crosslinkable polymer resin alone. This composition may be used in cables for low temperature service applications.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: May 21, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Stephen H. Cree, David P. Wright
  • Publication number: 20100319960
    Abstract: The present invention is a highly mineral-filled halogen-free, flame-retardant composition made from or containing a mineral filler, an olefin multi-block interpolymer, and a polar-monomer-based compatibilizer. The invented system has improved elongation at break, achieves a highly flexible, soft compound at high (e.g. >40 weight percent) filler addition, and achieves and low residual deformation when subjected to the hot pressure test. The invention also includes cables and extruded articles prepared from the composition.
    Type: Application
    Filed: February 20, 2009
    Publication date: December 23, 2010
    Inventors: Stephen H. Cree, Gerrit Groot-Enzerink, Maria Ruiz
  • Publication number: 20100282489
    Abstract: The present invention is a highly mineral-filled halogen-free, flame-retardant composition made from or containing a polypropylene thermoplastic elastomer, a polypropylene, a metal hydroxide filler, and a polar-monomer-grafted polyolefin elastomer compatibilizer. The invented system has improved tensile strength, improved elongation at break, and low permanent deformation at increasingly high test temperatures. The invention also includes cables and extruded articles prepared from the composition.
    Type: Application
    Filed: January 29, 2009
    Publication date: November 11, 2010
    Applicant: Dow Global Technologies Inc.
    Inventors: Stephen H. Cree, Gerrit Groot-Enzerink
  • Publication number: 20100181092
    Abstract: Compositions comprising at least 60 weight percent, based on the total weight of polymers, have at least one silane crosslinkable polyolefin resin and up to about 40 weight percent, based on the total weight of polymers, of at least one polyolefin elastomer resin, wherein the polyolefin polymer elastomer resin has density of less than or equal to about 0.89 g/cm3 and a melt index, I2, of less than about 50 g/10 mm. and which has been prepared using at least one metallocene catalyst provide improved flexibility, especially low temperature flexibility, while maintaining suitable cure performance and strength compared to the silane crosslinkable polymer resin alone. This composition may be used in cables for low temperature service applications.
    Type: Application
    Filed: June 20, 2008
    Publication date: July 22, 2010
    Inventors: Stephen H. Cree, David P. Wright
  • Patent number: 6803417
    Abstract: Slush moldable polyolefin powders are prepared by blending a crosslinkable silane-grafted, olefinic interpolymer, optionally containing a crystalline polypropylene homopolymer or interpolymer; and a crosslinked silane-grafted, olefinic interpolymer containing a cure catalyst, the blend optionally containing a crystalline polyolefin powder. The resulting compositions can be slush molded to make a variety of articles of manufacture, especially automotive interior components, having good hot tear properties, low hardness and no glossing after heat aging.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: October 12, 2004
    Assignee: Dupont Dow Elastomers L.L.C.
    Inventors: Stephen H. Cree, Timothy E. Clayfield
  • Publication number: 20030130420
    Abstract: Slush moldable polyolefin powders are prepared by blending a crosslinkable silane-grafted, olefinic interpolymer, optionally containing a crystalline polypropylene homopolymer or interpolymer; and a crosslinked silane-grafted, olefinic interpolymer containing a cure catalyst, the blend optionally containing a crystalline polyolefin powder. The resulting compositions can be slush molded to make a variety of articles of manufacture, especially automotive interior components, having good hot tear properties, low hardness and no glossing after heat aging.
    Type: Application
    Filed: September 25, 2002
    Publication date: July 10, 2003
    Inventors: Stephen H. Cree, Timothy E. Clayfield
  • Patent number: 5852116
    Abstract: Crosslinkable polyolefin compositions, articles prepared from such compositions, and processes for making such compositions are described that possess both good processability and fast cure rates. The crosslinkable polyolefin compositions are bidisperse blends of ethylene polymers of the same polymer family having differing number average molecular weights as obtained by deconvolution in which M.sub.n1 /M.sub.n2 >7, M.sub.n2 >3000 and 0.7.gtoreq.(A.sub.1 /(A.sub.1 +A.sub.2)).gtoreq.0.15 wherein M.sub.n1 represents the number average molecular weight of the first deconvoluted component, M.sub.n2 represents the number average molecular weight of the second deconvoluted component, and A.sub.1 and A.sub.2 are the relative proportions of the first and second components.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: December 22, 1998
    Assignee: The Dow Chemical Company
    Inventors: Stephen H. Cree, John Penfold, Line F. Fanichet, Craig A. Wilson
  • Patent number: 5795941
    Abstract: Crosslinkable polyolefin compositions, articles prepared from such compositions, and processes for making such compositions are described that possess both good processability and fast cure rates. The crosslinkable polyolefin compositions are bidisperse blends of ethylene polymers of the same polymer family having differing number average molecular weights as obtained by deconvolution in which M.sub.n1 /M.sub.n2 >7, M.sub.n2 >3000 and 0.7.gtoreq.(A.sub.1 /(A.sub.1 +A.sub.2)).gtoreq.0.15 wherein M.sub.n1 represents the number average molecular weight of the first deconvoluted component, M.sub.n2 represents the number average molecular weight of the second deconvoluted component, and A.sub.1 and A.sub.2 are the relative proportions of the first and second components.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: August 18, 1998
    Assignee: The Dow Chemical Company
    Inventors: Stephen H. Cree, Craig A. Wilson, Sjoerd A. de Vries