Patents by Inventor Marvin M. Martens
Marvin M. Martens 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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Publication number: 20140065338Abstract: Disclosed is a monolayer tube comprising a melt-blended thermoplastic composition consisting essentially of (A) a polyamide resin selected from the group consisting of PA 614, PA 616, PA 618 and blends of these; and optionally: (B) one or more polymeric toughener(s); (C) one or more plasticizer(s); and (D) one or more functional additive(s); wherein the weight percent of (A), (B), (C), and (D) are based on the total weight of the melt-blended thermoplastic composition.Type: ApplicationFiled: August 28, 2012Publication date: March 6, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: SHAILESH RATILAL DOSHI, Marvin M. Martens, Anna Kutty Mathew, Georgios Topoulos
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Publication number: 20140011951Abstract: Disclosed is a thermoplastic composition including (A) a polyamide resin independently selected from the group consisting of Group (IV) Polyamides comprising (aa) about 50 to about 95 mole percent semiaromatic repeat and (bb) about 5 to about 50 mole percent aliphatic repeat units; and Group (VI) Polyamides having no melting point, (B) about 0.25 to about 15 weight percent of one or more polyhydric alcohols having more than two hydroxyl groups and a having a number average molecular weight (Mn) of less than 2000; (C) 0 to 60 weight percent of one or more reinforcement agents; and (D) 0 to 50 weight percent of a polymeric toughener wherein said polyamide resin has at least about 70 meq/Kg of amine ends.Type: ApplicationFiled: September 11, 2013Publication date: January 9, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Marvin M. Martens, Toshikazu Kobayashi
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Patent number: 8530571Abstract: Disclosed is a thermoplastic composition including (A) a polyamide resin independently selected from the group consisting of Group (I) Polyamides having a melting point of at least 260° C., and comprising (a) greater than 95 mole percent semiaromatic repeat units and (b) less than 5 mole percent aliphatic repeat units; (B) 0 to 60 weight percent of one or more reinforcement agents; and (C) 0 to 50 weight percent of one or more a polymeric tougheners; wherein the weight percentages are based on the total weight of said thermoplastic composition; and wherein said polyamide resin has at least 50 meq/Kg of acid ends.Type: GrantFiled: December 10, 2010Date of Patent: September 10, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Toshikazu Kobayashi, Marvin M. Martens, Shengmei Yuan
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Publication number: 20130048136Abstract: Disclosed is a copolyamide including at least two repeat units selected from the group consisting of structures (I) to (IV), —C(O)(CH2)10C(O)NH(CH2)nNH—??(I); —C(O)(CH2)12C(O)NH(CH2)nNH—??(II); —C(O)(CH2)14C(O)NH(CH2)nNH—??(II); and —C(O)(CH2)16C(O)NH(CH2)nNH—??(IV); and n is an integer selected from 4, 6, 10 or 12; wherein at least one repeat unit is selected from structures (I) and (II); and any one the repeat units may be present up to about 92 mole percent. Also disclosed is a process for providing the copolyamide; and thermoplastic compositions and tubing including the copolyamides.Type: ApplicationFiled: August 28, 2012Publication date: February 28, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: EKATERINI KOROVESSI, Anna Kutty Mathew, Marvin M. Martens, Joachim C. Ritter
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Patent number: 8349932Abstract: Disclosed is a polyamide composition including at least one semi-aromatic copolyamide, said semi-aromatic copolyamide consisting essentially of about 25 to about 55 mole percent repeat units of the formula —C(O)(CH2)mC(O)NHCH2ArCH2NH—??(I) and about 45 to about 75 mole percent repeat units of the formula —C(O)(CH2)mC(O)NH(CH2)nNH—??(II) wherein m is 8, 10, and/or 12, n is 6, 10 and/or 12 and Ar is a meta-substituted benzene ring; and said polyamide has a melting point equal to or less than 225° C.; and 0.25 to 20 weight percent of one or more polyhydroxy polymer(s) having a number average molecular weight of at least 2000 and selected from the group consisting of ethylene/vinyl alcohol copolymer and poly(vinyl alcohol). Also disclosed are molded or extruded articles including the polyamide composition.Type: GrantFiled: January 28, 2011Date of Patent: January 8, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Shailesh Ratilal Doshi, Annakutty Mathew, Marvin M. Martens
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Patent number: 8232337Abstract: Disclosed is a polyamide composition including at least one semi-aromatic copolyamide, said semi-aromatic copolyamide consisting essentially of about 25 to about 55 mole percent repeat units of the formula —C(O)(CH2)mC(O)NHCH2ArCH2NH—??(I) and about 45 to about 75 mole percent repeat units of the formula —C(O)(CH2)mC(O)NH(CH2)nNH—??(II) wherein m is 8, 10, and/or 12, n is 6, 10 and/or 12 and Ar is a meta-substituted benzene ring; and said polyamide has a melting point equal to or less than 225° C.; and 0.1 to 15 weight percent of one or more polyhydric alcohols having more than two hydroxyl groups and having a number average molecular weight (Mn) of less than 2000. Also disclosed are molded or extruded articles including the polyamide composition.Type: GrantFiled: January 28, 2011Date of Patent: July 31, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Shailesh Ratilal Doshi, Anna Kutty Mathew, Marvin M Martens
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Patent number: 8211517Abstract: Multi-layered co-extruded tubes are provided that include an outer layer including a first semiaromatic semicrystalline polyamide having a melt temperature of about 240° C. to 280° C., and a thermal stabilizer; and an inner layer including a second semiaromatic semicrystalline polyamide having a glass transition equal to or greater than 100° C.Type: GrantFiled: June 3, 2010Date of Patent: July 3, 2012Assignee: EI du Pont de Nemours and CompanyInventors: Marvin M. Martens, Annakutty Mathew, Georgios Topoulos
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Publication number: 20120029134Abstract: Disclosed is a polyamide composition including at least one semi-aromatic copolyamide, said semi-aromatic copolyamide consisting essentially of about 25 to about 55 mole percent repeat units of the formula —C(O)(CH2)mC(O)NHCH2ArCH2NH—??(I) and about 45 to about 75 mole percent repeat units of the formula —C(O)(CH2)mC(O)NH(CH2)2NH—(II) wherein m is 8, 10, and/or 12, n is 6, 10 and/or 12 and Ar is a meta-substituted benzene ring; and said polyamide has a melting point equal to or less than 225° C.; and 0.1 to 15 weight percent of one or more polyhydric alcohols having more than two hydroxyl groups and having a number average molecular weight (Mn) of less than 2000. Also disclosed are molded or extruded articles including the polyamide composition.Type: ApplicationFiled: January 28, 2011Publication date: February 2, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: SHAILESH RATILAL DOSHI, Annakutty Mathew, Marvin M. Martens
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Publication number: 20110190433Abstract: Disclosed is a polyamide composition including at least one semi-aromatic copolyamide, said semi-aromatic copolyamide consisting essentially of about 25 to about 55 mole percent repeat units of the formula —C(O)(CH2)mC(O)NHCH2ArCH2NH—??(I) and about 45 to about 75 mole percent repeat units of the formula —C(O)(CH2)mC(O)NH(CH2)nNH—??(II) wherein m is 8, 10, and/or 12, n is 6, 10 and/or 12 and Ar is a meta-substituted benzene ring; and said polyamide has a melting point equal to or less than 225° C.; and 0.25 to 20 weight percent of one or more polyhydroxy polymer(s) having a number average molecular weight of at least 2000 and selected from the group consisting of ethylene/vinyl alcohol copolymer and poly(vinyl alcohol). Also disclosed are molded or extruded articles including the polyamide composition.Type: ApplicationFiled: January 28, 2011Publication date: August 4, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Shailesh Ratilal Doshi, Annakutty Mathew, Marvin M. Martens
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Publication number: 20110152450Abstract: Disclosed is a thermoplastic composition including (A) a polyamide resin independently selected from the group consisting of Group (I) Polyamides having a melting point of at least 260° C., and comprising (a) greater than 95 mole percent semiaromatic repeat units and (b) less than 5 mole percent aliphatic repeat units; (B) 0 to 60 weight percent of one or more reinforcement agents; and (C) 0 to 50 weight percent of one or more a polymeric tougheners; wherein the weight percentages are based on the total weight of said thermoplastic composition; and wherein said polyamide resin has at least 50 meq/Kg of acid ends.Type: ApplicationFiled: December 10, 2010Publication date: June 23, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Toshikazu Kobayashi, Marvin M. Martens, Shengmei Yuan
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Publication number: 20110052848Abstract: Polyamides made from 1,6-hexanediamine, and the dicarboxylic acids 1,10-decandioic acid, 1,12-dodecanedioic acid, or 1,14-tetradecanedioic acid and terephthalic acid in specified proportions are particularly resistant to salt stressed (induced) corrosion cracking. This makes them particularly useful as vehicular parts which may be exposed to salts. Particularly when these polyamides contain tougheners and/or plasticizers they are especially useful for hoses and tubes.Type: ApplicationFiled: September 1, 2010Publication date: March 3, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: SHAILESH RATILAL DOSHI, MARVIN M. MARTENS, ANNAKUTTY MATHEW, STEVEN A. MESTEMACHER
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Publication number: 20110028628Abstract: Disclosed is a thermoplastic composition including (A) a polyamide resin independently selected from the group consisting of Group (IV) Polyamides comprising (aa) about 50 to about 95 mole percent semiaromatic repeat and (bb) about 5 to about 50 mole percent aliphatic repeat units; and Group (VI) Polyamides having no melting point, (B) about 0.25 to about 15 weight percent of one or more polyhydric alcohols having more than two hydroxyl groups and a having a number average molecular weight (Mn) of less than 2000; (C) 0 to 60 weight percent of one or more reinforcement agents; and (D) 0 to 50 weight percent of a polymeric toughener wherein said polyamide resin has at least about 70 meq/Kg of amine ends.Type: ApplicationFiled: July 23, 2010Publication date: February 3, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Marvin M. Martens, Toshikazu Kobayashi
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Publication number: 20110028621Abstract: Disclosed is a thermoplastic composition including A) a polyamide resin having a melting point and/or glass transition; B) 0.25 to 20 weight percent of at least one polyhydric polymer; C) 0 to 3 weight percent of one or more co-stabilizer(s); and, D) 0 to about 60 weight percent of one or more reinforcement agents, wherein said polyamide resin is selected from the group consisting of Group (III) Polyamides having said melting point of at least 210° C., and including about 20 to about 35 mole percent semiaromatic repeat units, Group (IV) Polyamides comprising about 50 to about 95 mole percent semiaromatic repeat units, Group (V) Polyamides having said melting point of at least 260° C., and including greater than 95 mole percent semiaromatic repeat units, and Group (VI) Polyamides having no melting point; with the proviso that when less than 10 weight percent said one or more reinforcement agent(s) is present, at least 0.1 weight % of said one or more co-stabilizer(s) also is present.Type: ApplicationFiled: July 23, 2010Publication date: February 3, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Marvin M. Martens, Toshikazu Kobayashi
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Publication number: 20100307626Abstract: Multi-layered co-extruded tubes are provided that include an outer layer including a first semiaromatic semicrystalline polyamide having a melt temperature of about 240° C. to 280° C., and a thermal stabilizer; and an inner layer including a second semiaromatic semicrystalline polyamide having a glass transition equal to or greater than 100° C.Type: ApplicationFiled: June 4, 2010Publication date: December 9, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Marvin M. Martens, Annakutty Mathew, Georgios Topoulos
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Publication number: 20100307625Abstract: Multi-layered co-extruded tubes are provided that include an outer layer including a first semiaromatic semicrystalline polyamide having a melt temperature of about 240° C. to 280° C., and a thermal stabilizer; and an inner layer including a second semiaromatic semicrystalline polyamide having a glass transition equal to or greater than 100° C.Type: ApplicationFiled: June 3, 2010Publication date: December 9, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Marvin M. Martens, Annakutty Mathew, Georgios Topoulos
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Publication number: 20100233402Abstract: Polyamides made from 1,6-hexanediamine, and the dicarboxylic acids 1,10-decandioic acid and/or 1,12-dodecanedioic acid, and terephthalic acid in specified proportions are particularly resistant to salt stressed (induced) corrosion cracking. This makes them particularly useful as vehicular parts which may be exposed to salts. Particularly when these polyamides contain tougheners and/or plasticizers they are especially useful for hoses and tubes.Type: ApplicationFiled: March 10, 2010Publication date: September 16, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Shailesh Ratilal Doshi, Marvin M. Martens, Annakutty Mathew, Steven A. Mestemacher
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Patent number: 7696301Abstract: Marine umbilicals are provided comprising polyamide compositions having good hydrolysis resistance and that may optionally contain plasticizer.Type: GrantFiled: October 25, 2005Date of Patent: April 13, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Robert B. Fish, Jr., Marvin M. Martens, Steven A. Mestemacher, Rolando Umali Pagilagan
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Publication number: 20100029820Abstract: Disclosed is a thermoplastic composition including (A) a polyamide resin selected from the group consisting of Group (III) Polyamides including (a) about 20 to about 35 mole percent semiaromatic repeat units derived from monomers selected from one or more of the group consisting of (i) aromatic dicarboxylic acids; and (b) about 65 to about 80 mole percent aliphatic repeat units; (B) one or more polyhydric alcohols having more than two hydroxyl groups and a having a number average molecular weight (Mn) of less than 2000; and (C) 0 to 60 weight percent of one or more reinforcement agents.Type: ApplicationFiled: July 30, 2009Publication date: February 4, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: ROBERT J. PALMER, MARVIN M. MARTENS
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Publication number: 20090105412Abstract: Polyamides made from a combination of adipic acid, terephthalic acid and 1,6-hexanediamine in specified proportions have excellent salt stress corrosion cracking resistance. These polyamides are especially useful for vehicular parts that are exposed to contact with salts such as sodium chloride or calcium chloride that are used, for instance, for melting ice and/or snow on roadways.Type: ApplicationFiled: September 12, 2008Publication date: April 23, 2009Inventors: Marvin M. Martens, Ahmet Turgut Mutel
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Patent number: 7294661Abstract: The present invention relates to a flame resistant polyamide resin compositions for moulded articles and articles formed therefrom, comprising aromatic polyamide with phosphinate and/or diphosphinate flame retardant and, optionally, glass fibers. Further provided are articles for use in a variety of applications including electrical and electronic parts requiring electrical insulation.Type: GrantFiled: September 29, 2004Date of Patent: November 13, 2007Assignee: E.I. du Pont de Nemours and CompanyInventors: Marvin M. Martens, Yuji Saga