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).
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Patent number: 8829112Abstract: 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: GrantFiled: August 1, 2012Date of Patent: September 9, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Jingjing Xu, Toshikazu Kobayashi, Edmund Arthur Flexman
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Publication number: 20120196064Abstract: 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: ApplicationFiled: July 29, 2010Publication date: August 2, 2012Applicant: E.I.DU PONT DE NEMOURS AND COMPANYInventors: Lin Fang, Hua Jiao, Lei Ying, Linda S. Ankrom, Edmund Arthur Flexman
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Publication number: 20110207885Abstract: 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: ApplicationFiled: November 24, 2008Publication date: August 25, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: Edmund Arthur Flexman
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Patent number: 7834092Abstract: 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: GrantFiled: March 26, 2009Date of Patent: November 16, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Julius Uradnisheck, Edmund Arthur Flexman
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Patent number: 7786210Abstract: 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: GrantFiled: November 13, 2008Date of Patent: August 31, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Julius Uradnisheck, Edmund Arthur Flexman
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Publication number: 20100041830Abstract: 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: ApplicationFiled: November 2, 2009Publication date: February 18, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: Edmund Arthur Flexman
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Publication number: 20090286905Abstract: 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 toughenerType: ApplicationFiled: May 18, 2009Publication date: November 19, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Edmund Arthur Flexman, Ramabhadra Ratnagiri
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Patent number: 7595363Abstract: 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: GrantFiled: September 7, 2006Date of Patent: September 29, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: Julius Uradnisheck, Edmund Arthur Flexman
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Publication number: 20090176938Abstract: 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: ApplicationFiled: January 9, 2009Publication date: July 9, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Jingjing Xu, Toshikazu Kobayashi, Edmund Arthur Flexman
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Publication number: 20090143530Abstract: 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: ApplicationFiled: November 20, 2008Publication date: June 4, 2009Inventor: Edmund Arthur Flexman
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Publication number: 20090131566Abstract: 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: ApplicationFiled: November 13, 2008Publication date: May 21, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Julius Uradnisheck, Edmund Arthur Flexman
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Patent number: 7381772Abstract: 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: GrantFiled: March 31, 2006Date of Patent: June 3, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: Edmund Arthur Flexman, Julius Uradnisheck
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Patent number: 7354973Abstract: 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: GrantFiled: November 23, 2004Date of Patent: April 8, 2008Assignee: E.I. du Pont de Nemours and CompanyInventor: Edmund Arthur Flexman
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Patent number: 6992141Abstract: 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: GrantFiled: July 28, 2003Date of Patent: January 31, 2006Assignee: E.I. du Pont de Nemours and CompanyInventors: Charles J. Brandenburg, David M. Dean, George Henry Hofmann, Rutger D. Puts, Randal King, Edmund Arthur Flexman
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Patent number: 6943214Abstract: 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: GrantFiled: April 1, 2004Date of Patent: September 13, 2005Assignee: E. I. du Pont de Nemours and CompanyInventor: Edmund Arthur Flexman
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Patent number: 6936651Abstract: 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: GrantFiled: September 11, 2003Date of Patent: August 30, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Edmund Arthur Flexman, Mark Gary Weinberg
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Publication number: 20040230001Abstract: 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: ApplicationFiled: April 1, 2004Publication date: November 18, 2004Inventor: Edmund Arthur Flexman
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Patent number: 6815479Abstract: 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: GrantFiled: August 17, 2000Date of Patent: November 9, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark Gary Weinberg, Edmund Arthur Flexman
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Publication number: 20040118509Abstract: 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: ApplicationFiled: November 26, 2003Publication date: June 24, 2004Inventors: Edmund Arthur Flexman, Stefan Greulich, Kimberly L. Richmann
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Publication number: 20040116603Abstract: 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: ApplicationFiled: August 26, 2003Publication date: June 17, 2004Inventors: Toshikazu Kobayashi, Claire Brissot, Edmund Arthur Flexman