Patents by Inventor Richard T. Chou

Richard T. Chou 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: 8772410
    Abstract: A composition that can be used as foam composition is disclosed, which comprises or is produced from an ethylene acrylate dipolymer, an acid copolymer, and optionally a soft ethylene polymer. The ethylene acrylate dipolymer comprises repeat units derived from ethylene and at least one alkylacrylate. The acid copolymer comprises repeat units derived from ethylene and acrylic acid, methacrylic acid, or combinations thereof. The soft ethylene polymer comprises ethylene and an ?-olefin, vinyl acetate, or combinations thereof.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: July 8, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Richard T. Chou
  • Patent number: 8586663
    Abstract: Disclosed in a composition comprising at least one ionomer (A) and at least one blend comprising at least one polyamide and at least one ionomer (B) wherein the polyamide is an aliphatic polyamide and the ionomer (B) is a copolymer of ethylene, an ?, ?-unsaturated C3-C8 carboxylic acid, at least one ethylenically unsaturated dicarboxylic acid or derivative thereof, and optionally an alkyl (meth)acrylate.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: November 19, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Karlheinz Hausmann, Richard T. Chou, Herbert Vernon Bendler
  • Publication number: 20130172488
    Abstract: Disclosed is a shaped article comprising a composition comprising polyamide and ionomer wherein the ionomer comprises a mixture of Zn and alkali metal (M2) cations wherein the Zn/M2 equivalent ratio is from about 0.6 to about 6. The articles prepared from the compositions with mixed ion ionomers exhibit high stiffness, hardness and toughness, good scratch resistance, desirable low melt viscosity and high processability.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 4, 2013
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard T. Chou, Herbert Vernon Bendler, Karlheinz Hausmann
  • Publication number: 20130171394
    Abstract: Disclosed is a composition comprising polyamide comprising nylon-6 and optionally nylon-6,66, nylon-66, nylon-610, nylon-612, nylon-11, nylon-12 and an ionomer comprising an ethylene carboxylic acid copolymer, wherein 30 to 90% of the total carboxylic acid functionalities are neutralized to salts with a mixture of zinc cations and cations of a second metal selected from Group 1 of the Periodic Table of the Elements wherein the salts comprise from 20 to 90% equivalents of zinc. Articles prepared from the composition have improved salt stress crack resistance when exposed to zinc chloride solutions.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 4, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard T. Chou, Herbert Vernon Bendler
  • Publication number: 20130171390
    Abstract: Disclosed is a composition comprising polyamide and ionomer useful for powder coating applications and a method for transforming the composition into particulate or powder form for application to metal objects. The invention also relates to coated metal objects comprising the composition as a coating.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 4, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard T. Chou, Mark B. Kelly, Olivier Magnin
  • Patent number: 8389604
    Abstract: Disclosed is a method including (A) melt blending first components including (a-1) a poly(trimethylene terephthalate) homopolymer or copolymer resin; and (a-2) one or more ionomer polymers or a combination of one or more ionomer polymers and acid polymers; to provide a first melt blend; and (B) melt blending said first melt blend with one or more Group B polymeric toughener(s) selected from the group consisting of an ethylene copolymers of the formula E/X/Y wherein: E is the radical formed from ethylene; X is selected from the group consisting of radicals formed from CH2?CH(R1)—C(O)—OR2 Y is one or more radicals formed from selected monomers with the proviso that Y must include at least one radical formed from monomers selected from the group consisting of maleic anhydride, (meth)acrylic acid, maleic acid, maleic acid monoesters, itaconic acid, fumaric acid, fumaric acid monoesters, salts of said preceding acids, and glycidyl acrylate, glycidyl methacrylate, and glycidyl vinyl ether.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: March 5, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Richard T. Chou, Toshikazu Kobayashi
  • Publication number: 20120202940
    Abstract: Disclosed in a composition comprising at least one ionomer (A) and at least one blend comprising at least one polyamide and at least one ionomer (B) wherein the polyamide is an aliphatic polyamide and the ionomer (B) is a copolymer of ethylene, an ?, ?-unsaturated C3-C8 carboxylic acid, at least one ethylenically unsaturated dicarboxylic acid or derivative thereof, and optionally an alkyl (meth)acrylate.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 9, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Karlheinz HAUSMANN, Richard T. CHOU, Herbert Vernon BENDLER
  • Patent number: 8084129
    Abstract: Disclosed laminates particularly useful as safety glazings comprising a polymeric interlayer sheet, wherein the polymeric interlayer sheet comprises a blend composition of an ethylene copolymer A and an ethylene copolymer B, which has a melt flow rate of less than 100g/10 min, as determined in accordance with ASTM D1238 at 190° C. and 2.16 kg, and wherein the ethylene copolymer A comprises copolymerized units of ethylene and about 3 to about 20 wt % of an ester or anhydride of a C4-C8 unsaturated acid having two carboxylic acid groups and the ethylene copolymer B comprises copolymerized units of ethylene and about 6 to about 40 wt % of a polar monomer selected from the group consisting of vinyl acetate, alkyl(meth)acrylates, and mixtures thereof.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: December 27, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard T. Chou
  • Patent number: 8080727
    Abstract: Disclosed is a solar cell module comprising a polymeric encapsulant sheet, wherein the polymeric encapsulant sheet comprises a blend composition of an ethylene copolymer A and an ethylene copolymer B, the blend composition having a melt flow rate of less than 100 g/10 min, as determined in accordance with ASTM D1238 at 190° C. and 2.16 kg, and wherein the ethylene copolymer A comprises copolymerized units of ethylene and about 3 to about 20 wt % of an ester or anhydride of a C4-C8 unsaturated acid having two carboxylic acid groups and the ethylene copolymer B comprises copolymerized units of ethylene and about 6 to about 40 wt % of a polar monomer selected from the group consisting of vinyl acetate, alkyl (meth)acrylates, and mixtures thereof.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: December 20, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard T. Chou
  • Patent number: 8062757
    Abstract: Disclosed are high frequency-active blends comprising (a) copolymers of ethylene and maleic anhydride or its functional equivalents and (b) ethylene copolymers with polar comonomers such as ethylene/vinyl acetate copolymers, ethylene/alkyl(meth)acrylate copolymers and ethylene/(meth)acrylate/carbon monoxide terpolymers; and films, powders, multilayer structures, and articles prepared therefrom.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: November 22, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Richard T. Chou
  • Patent number: 8057910
    Abstract: Disclosed are high frequency-active blends comprising (a) copolymers of ethylene and maleic anhydride or its functional equivalents and (b) ethylene copolymers with polar comonomers such as ethylene/vinyl acetate copolymers, ethylene/alkyl (meth)acrylate copolymers and ethylene/(meth)acrylate/carbon monoxide terpolymers; and films, powders, multilayer structures, and articles prepared therefrom.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: November 15, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard T. Chou, Karlheinz Hausmann, Han Il Lee
  • Publication number: 20110123782
    Abstract: Disclosed is a recyclable coated banner substrate comprising (1) a composition comprising (a) copolymers of ethylene and maleic anhydride or its functional equivalents and (b) ethylene copolymers with polar comonomers such as ethylene/vinyl acetate copolymers, ethylene/alkyl (meth)acrylate copolymers and ethylene/(meth)acrylate/carbon monoxide terpolymers, and (2) a planar polyolefin banner substrate wherein the composition is affixed to at least one side of the planar polyolefin banner substrate.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 26, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: ERIC W. TEATHER, Seqwana T. Pryor, Richard T. Chou
  • Publication number: 20110117363
    Abstract: Disclosed are high frequency-active blends comprising (a) copolymers of ethylene and maleic anhydride or its functional equivalents and (b) ethylene copolymers with polar comonomers such as ethylene/vinyl acetate copolymers, ethylene/alkyl (meth)acrylate copolymers and ethylene/(meth)acrylate/carbon monoxide terpolymers; and films, powders, multilayer structures, and articles prepared therefrom.
    Type: Application
    Filed: December 20, 2010
    Publication date: May 19, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Richard T. Chou
  • Publication number: 20110105644
    Abstract: Poly(trimethylene terephthalate compositions comprising (a) molding resin comprising a poly(trimethylene terephthalate) resin and 0.1 to 4 weight percent of one or more ionomer polymers or a combination of the ionomer polymers and acid copolymers; (b) 0 to about 50 weight percent of one or more fillers, based on the total weight of the molding resin; and (c) about 1.0 to about 5 weight percent of one or more Group A polymeric tougheners based on the total weight of components (a) and (c); wherein: each ionomer polymer and acid copolymer has: C3 to C8 carboxylic acid repeat units; a weight percent, W, based on the weight of components (a) and (c); a weight fraction of C3 to C8 carboxylic acid repeat units, Z, based on the weight of each ionomer or acid copolymer; and a neutralization ratio, N, ranging in value from 0 to 1.
    Type: Application
    Filed: November 1, 2010
    Publication date: May 5, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard T. Chou, Toshikazu Kobayashi
  • Publication number: 20110105674
    Abstract: Disclosed is a method including (A) melt blending first components including (a-1) a poly(trimethylene terephthalate) homopolymer or copolymer resin; and (a-2) one or more ionomer polymers or a combination of one or more ionomer polymers and acid polymers; to provide a first melt blend; and (B) melt blending said first melt blend with one or more Group B polymeric toughener(s) selected from the group consisting of an ethylene copolymers of the formula E/X/Y wherein: E is the radical formed from ethylene; X is selected from the group consisting of radicals formed from CH2?CH(R1)—C(O)—OR2 Y is one or more radicals formed from selected monomers with the proviso that Y must include at least one radical formed from monomers selected from the group consisting of maleic anhydride, (meth)acrylic acid, maleic acid, maleic acid monoesters, itaconic acid, fumaric acid, fumaric acid monoesters, salts of said preceding acids, and glycidyl acrylate, glycidyl methacrylate, and glycidyl vinyl ether.
    Type: Application
    Filed: November 1, 2010
    Publication date: May 5, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard T. Chou, Toshikazu Kobayashi
  • Patent number: 7935765
    Abstract: The present invention is a composition useful as an impact modifier for polyamide compositions. In one embodiment, impact modifiers of the present invention are ethylene maleic anhydride copolymers having at least 3% maleic anhydride functionality. Compositions comprising copolymers of ethylene and maleic anhydride or its functional equivalents and ethylene copolymers with polar comonomers are disclosed. The compositions provide miscible blends and exhibit improved properties, such as increased temperature resistance and mechanical strength, compared to pure ethylene copolymers with polar comonomers.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: May 3, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard T. Chou
  • Publication number: 20110086564
    Abstract: Disclosed are high frequency-active blends comprising (a) copolymers of ethylene and maleic anhydride or its functional equivalents and (b) ethylene copolymers with polar comonomers such as ethylene/vinyl acetate copolymers, ethylene/alkyl (meth)acrylate copolymers and ethylene/(meth)acrylate/carbon monoxide terpolymers; and films, powders, multilayer structures, and articles prepared therefrom.
    Type: Application
    Filed: December 20, 2010
    Publication date: April 14, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard T. Chou, Karlheinz Hausmann, Han Il Lee
  • Patent number: 7897685
    Abstract: Polymer compositions having thermoplastic and elastomeric features are provided. These polymer compositions, which are also characterized by superior compatibility with water-based and solvent-based adhesives, comprise at least one thermoplastic elastomer and at least one maleated ethylene copolymer. The compositions of the invention are useful in articles of manufacture that require flexibility and are fabricated with adhesives, including sporting goods, and particularly athletic shoes.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: March 1, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard T. Chou, Kye Hyun Kim, Yun-Tong Ou
  • Patent number: 7879949
    Abstract: Disclosed are high frequency-active blends comprising (a) copolymers of ethylene and maleic anhydride or its functional equivalents and (b) ethylene copolymers with polar comonomers such as ethylene/vinyl acetate copolymers, ethylene/alkyl(meth)acrylate copolymers and ethylene/(meth)acrylate/carbon monoxide terpolymers; and films, powders, multilayer structures, and articles prepared therefrom.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: February 1, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Richard T. Chou
  • Publication number: 20110020573
    Abstract: A composition and an article therewith are disclosed wherein the composition comprises or is a blend that comprises a polyamide, an ionomer of an ethylene copolymer containing a monocarboxylic acid and a dicarboxylic acid or derivative thereof, and a sulfonamide.
    Type: Application
    Filed: July 22, 2009
    Publication date: January 27, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Richard T. Chou, Herbert Vernon Bendler