Patents by Inventor Edmund Arthur Flexman

Edmund Arthur Flexman 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).

  • Patent number: 8829112
    Abstract: A composition comprises or is produced from polyester, a first modifier, and a second modifier wherein the first modifier includes a polymer that is incompatible with poly(hydroxyalkanoic acid) and is not an acid-containing or acid generating polymer. Also disclosed is an article comprising or produced from the composition. Further disclosed is a process combining a first modifier, a second modifier, or both, with a poly(hydroxyalkanoic acid) to produce the composition and optionally injection molding or thermoforming the composition into the article.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: September 9, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Jingjing Xu, Toshikazu Kobayashi, Edmund Arthur Flexman
  • Publication number: 20120196064
    Abstract: Thermoplastic polyester compositions, comprising: (a) 54-98% by weight of at least one polytrimethylene terephthalate; (b) 1-45% by weight of at least one impact modifier, and the at least one impact modifier is selected from ethylene copolymers having a general formula of E/X/Y, wherein: E is a radical derived from ethylene and accounts for 40-90% by weight of the total weight of the ethylene copolymer; X accounts for 9-55% by weight of the total weight of the ethylene copolymer and is a radical derived from a monomer having the following general formula: wherein, R1 is an alkyl containing 2-8 carbon atoms; R2 is H, CH3 or C2H5; Y is a radical derived from a monomer unit selected from glycidyl methacrylates and glycidyl acrylates and accounts for 0.5-40% by weight of the total weight of the ethylene copolymer; and (c) 0.01-3.0% by weight of a cationic catalyst, and the cation is selected from the group consisting of Mg2+, Sn2+, and Zn2+ and mixtures of these.
    Type: Application
    Filed: July 29, 2010
    Publication date: August 2, 2012
    Applicant: E.I.DU PONT DE NEMOURS AND COMPANY
    Inventors: Lin Fang, Hua Jiao, Lei Ying, Linda S. Ankrom, Edmund Arthur Flexman
  • Publication number: 20110207885
    Abstract: Polyamides containing repeat units derived from about 10 to about 35 weight percent 1,6-diaminohexane and terephthalic acid, up to 10 weight percent of other polyamide repeat units, and the remainder of the repeat units derived from 1,6-diaminohexane and adipic acid may be toughened with exceptionally small amounts of rubber tougheners, to give compositions which are especially tough. The resulting compositions are useful for industrial, consumer, electronics, and automotive parts.
    Type: Application
    Filed: November 24, 2008
    Publication date: August 25, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Edmund Arthur Flexman
  • Patent number: 7834092
    Abstract: Disclosed are oriented films comprising toughened poly(hydroxy-alkanoic acid) resin compositions comprising poly(hydroxyalkanoic acid) and an impact modifier comprising an ethylene copolymer made from monomers (a) ethylene; (b) one or more olefins of the formula CH2?C(R3)CO2R4, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4 is glycidyl; and optionally (c) one or more olefins of the formula CH2?C(R1)CO2R2, where R1 is hydrogen or an alkyl group with 2-8 carbon atoms and R2 is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl. The ethylene copolymer may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents. Also disclosed are packaging materials and containers comprising the oriented films.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: November 16, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Julius Uradnisheck, Edmund Arthur Flexman
  • Patent number: 7786210
    Abstract: Disclosed is a composition comprising poly(hydroxyalkanoic acid), plasticizer, and optionally a nucleator, an impact modifier, or both. Also disclosed is a process for producing a thermoformed two-dimensional article having a surface area to thickness ratio greater than about 200:1 inch.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: August 31, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Julius Uradnisheck, Edmund Arthur Flexman
  • Publication number: 20100041830
    Abstract: Polyamides containing repeat units derived from about 10 to about 35 weight percent 1,6-diaminohexane and terephthalic acid, up to 10 weight percent of other polyamide repeat units, and the remainder of the repeat units derived from 1,6-diaminohexane and adipic acid may be toughened with exceptionally small amounts of rubber tougheners, to give compositions which are especially tough. The resulting compositions are useful for industrial, consumer, electronics, and automotive parts.
    Type: Application
    Filed: November 2, 2009
    Publication date: February 18, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Edmund Arthur Flexman
  • Publication number: 20090286905
    Abstract: Thermoplastic compositions comprising (a) 87 to 30 weight percent of polyacetal homopolymer, copolymer, or a combination of these; (b) 10 to 60 wt % of one or more cellulose ester(s) of C1 to C6 alkyl carboxylic acids; and (c) 3-15 wt % of at least one toughener
    Type: Application
    Filed: May 18, 2009
    Publication date: November 19, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Edmund Arthur Flexman, Ramabhadra Ratnagiri
  • Patent number: 7595363
    Abstract: Disclosed are toughened poly(hydroxyalkanoic acid) resin compositions comprising poly(hydroxyalkanoic acid), such as polylactic acid, and an impact modifier comprising an ethylene copolymer made from monomers (a) ethylene; (b) one or more olefins of the formula CH2?C(R1)CO2R2, where R1 is hydrogen or an alkyl group with 2-8 carbon atoms and R2 is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH2?C(R3)CO2R4, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4 is glycidyl. The ethylene copolymer may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic agents.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: September 29, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Julius Uradnisheck, Edmund Arthur Flexman
  • Publication number: 20090176938
    Abstract: A composition comprises or is produced from polyester, a first modifier, and a second modifier wherein the first modifier includes a polymer that is incompatible with poly(hydroxyalkanoic acid) and is not an acid-containing or acid generating polymer. Also provided is an article comprising or produced from the composition.
    Type: Application
    Filed: January 9, 2009
    Publication date: July 9, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Jingjing Xu, Toshikazu Kobayashi, Edmund Arthur Flexman
  • Publication number: 20090143530
    Abstract: Polyamides containing repeat units derived from about 10 to about 35 weight percent 1,6-diaminohexane and terephthalic acid, up to 10 weight percent of other polyamide repeat units, and the remainder of the repeat units derived from 1,6-diaminohexane and adipic acid may be toughened with exceptionally small amounts of rubber tougheners, to give compositions which are especially tough. The resulting compositions are useful for industrial, consumer, electronics, and automotive parts.
    Type: Application
    Filed: November 20, 2008
    Publication date: June 4, 2009
    Inventor: Edmund Arthur Flexman
  • Publication number: 20090131566
    Abstract: Disclosed is a composition comprising poly(hydroxyalkanoic acid), plasticizer, and optionally a nucleator, an impact modifier, or both. Also disclosed is a process for producing a thermoformed two-dimensional article having a surface area to thickness ratio greater than about 200:1 inch.
    Type: Application
    Filed: November 13, 2008
    Publication date: May 21, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Julius Uradnisheck, Edmund Arthur Flexman
  • Patent number: 7381772
    Abstract: Toughened poly(lactic acid) resin compositions comprising poly(lactic acid) and an impact modifier comprising an ethylene copolymer made from monomers (a) ethylene; (b) one or more olefins of the formula CH2?C(R1)CO2R2, where R1 is hydrogen or an alkyl group with 2-8 carbon atoms and R2 is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH2?C(R3)CO2R4, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4 is glycidyl. The ethylene copolymer may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: June 3, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Edmund Arthur Flexman, Julius Uradnisheck
  • Patent number: 7354973
    Abstract: Toughened poly(lactic acid) resin compositions comprising poly(lactic acid) and an impact modifier comprising an ethylene copolymer made from monomers (a) ethylene; (b) one or more olefins of the formula CH2?C(R1)CO2R2, where R1 is hydrogen or an alkyl group with 2-8 carbon atoms and R2 is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH2?C(R3)CO2R4, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4 is glycidyl. The ethylene copolymer may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: April 8, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Edmund Arthur Flexman
  • Patent number: 6992141
    Abstract: Polymers containing ?-methylenelact(ones)(ams) such as ?-methylenebutyrolactones are useful in blends with other polymers. For examples such polymers which have reactive groups are toughened by mixing with a rubbery material which has complimentary reactive groups, or polymers containing repeat units derived from ?-methylenelact(ones)(ams) are toughened by mixing with polymeric core-shell particles having an elastomeric core and a specified thermoplastic shell. The properties of thermoplastics are also improved by blending with ?-methylenelact(ones)(ams) such as ?-methylenebutyrolactones containing (co)polymers.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: January 31, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Charles J. Brandenburg, David M. Dean, George Henry Hofmann, Rutger D. Puts, Randal King, Edmund Arthur Flexman
  • Patent number: 6943214
    Abstract: Toughened polyoxymethylene-poly(lactic acid) resin compositions comprising polyoxymethylene, poly(lactic acid), and an impact modifier comprising an ethylene copolymer impact modifier made from monomers (a) ethylene; (b) one or more olefins of the formula CH2?C(R1)CO2R2, where R1 is hydrogen or an alkyl group with 2-8 carbon atoms and R2 is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH2?C(R3)CO2R4, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4 is glycidyl. The ethylene copolymer impact modifier may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: September 13, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Edmund Arthur Flexman
  • Patent number: 6936651
    Abstract: A composition for forming a crystalline thermoplastic (such as polyacetal) composition for improving compatibility using a ternary blend that includes a mineral filler and elastomer material and an article made therefrom. The mineral filler may be coated or uncoated.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: August 30, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Edmund Arthur Flexman, Mark Gary Weinberg
  • Publication number: 20040230001
    Abstract: Toughened polyoxymethylene-poly(lactic acid) resin compositions comprising polyoxymethylene, poly(lactic acid), and an impact modifier comprising an ethylene copolymer impact modifier made from monomers (a) ethylene; (b) one or more olefins of the formula CH2═C(R1)CO2R2, where R1 is hydrogen or an alkyl group with 2-8 carbon atoms and R2 is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH2═C(R3)CO2R4, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4 is glycidyl. The ethylene copolymer impact modifier may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents.
    Type: Application
    Filed: April 1, 2004
    Publication date: November 18, 2004
    Inventor: Edmund Arthur Flexman
  • Patent number: 6815479
    Abstract: A composition and method for forming a hydrocarbon polymer composition of molded articles that exhibit desirable combinations of stiffness and impact resistance, wherein the composition contains a mineral filler.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: November 9, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Gary Weinberg, Edmund Arthur Flexman
  • Publication number: 20040118509
    Abstract: This invention relates a method for forming a polyacetal blend substrate having at least one discontinuous or co-continuous layer adhered thereon, wherein the method utilizes concentrates to deliver the polymers that provide enhanced surface adhesion.
    Type: Application
    Filed: November 26, 2003
    Publication date: June 24, 2004
    Inventors: Edmund Arthur Flexman, Stefan Greulich, Kimberly L. Richmann
  • Publication number: 20040116603
    Abstract: Polyester compositions which contain a copolymer of ethylene, an acrylate ester, and carbon monoxide and optionally a fibrous filler having a relatively small diameter are particularly suitable for parts whose surface appearance is important, such as appliance panels and automobile body panels.
    Type: Application
    Filed: August 26, 2003
    Publication date: June 17, 2004
    Inventors: Toshikazu Kobayashi, Claire Brissot, Edmund Arthur Flexman