Patents by Inventor Chetan M. Makadia

Chetan M. Makadia 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: 10774172
    Abstract: A crystalline non-reinforced thermoplastic polyurethane composition having a high flexural modulus comprises 5% to 25% of a hydroxyl-functional polyol intermediate having a weight average molecular weight of 250 to 3000 and 75% to 95% hard segment comprising an unbranched, unsubstituted, linear chain diol and an aromatic isocyanate.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: September 15, 2020
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Qiwei Lu, Julius Farkas, Chetan M. Makadia, Alexander Jiaokai Jing
  • Publication number: 20200180258
    Abstract: The invention provides a multi-layer, flexible tubular article useful in fuel line applications comprising a thermoplastic polyurethane layer (10,14,18), an ethylene vinyl alcohol layer (16), and, optionally, a polyamide polymer layer (12,20) to provide an effective barrier against fuel permeation and to reduce washout of chemicals from the tube into the fuel.
    Type: Application
    Filed: August 22, 2018
    Publication date: June 11, 2020
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventor: Chetan M. Makadia
  • Publication number: 20190270840
    Abstract: The present invention relates to novel thermoplastic polyurethane (TPU) compositions that have crystalline chain ends. The TPU compositions of the invention can provide improved resiliency, lower surface free energy, and/or reduced stickiness, while maintaining other desirable physical properties. The TPU compositions of the present invention are made from the reaction product of an aliphatic polyisocyanate, a polycaprolactone polyester polyol, an optional chain extender component, and a chain terminator component, which comprises a short chain crystalline compound containing a single functional group capable of terminating the chain of the thermoplastic polyurethane.
    Type: Application
    Filed: June 15, 2017
    Publication date: September 5, 2019
    Inventors: Umit G. Makal, Romina Marin Bernabe, Chetan M. Makadia
  • Publication number: 20190085117
    Abstract: A crystalline non-reinforced thermoplastic polyurethane composition having a high flexural modulus comprises 5% to 25% of a hydroxyl-functional polyol intermediate having a weight average molecular weight of 250 to 3000 and 75% to 95% hard segment comprising an unbranched, unsubstituted, linear chain diol and an aromatic isocyanate.
    Type: Application
    Filed: November 1, 2016
    Publication date: March 21, 2019
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Qiwei Lu, Julius Farkas, Chetan M. Makadia, Alexander Jiaokai Jing
  • Publication number: 20180319925
    Abstract: A non-reinforced thermoplastic polyurethane composition having a high flexural modulus comprises 5% to 25% of a hydroxyl-functional polyol intermediate having a weight average molecular weight of 250 to 3000 and 75% to 95% hard segment comprising an unbranched, unsubstituted, straight chain diol and an aromatic isocyanate.
    Type: Application
    Filed: November 2, 2016
    Publication date: November 8, 2018
    Inventors: Qiwei Lu, Julius Farkas, Chetan M. Makadia, Alexander Jiaokai Jing
  • Patent number: 9920166
    Abstract: The present invention relates to flame retardant thermoplastic polyurethane (TPU) compositions, and more particularly to flame retardant thermoplastic polyurethane compositions comprising non-halogen flame retardants. The TPU compositions are useful for applications where high flame performance, and optionally low smoke properties, as well as high tensile strength are desirable, such as wire and cable applications, film applications, molding applications, and the like. This invention also relates to processes to produce the non-halogen flame retardant TPU compositions and processes to produce wire and cable jacketing from such compositions.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: March 20, 2018
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Chetan M. Makadia, Ann Giovannitti-Jensen
  • Publication number: 20170260355
    Abstract: The present invention relates to flame-retardant compositions, and more particularly to flame-retardant compositions comprising non-halogen flame-retardants. The compositions of this invention comprise a thermoplastic polyurethane component, a polycarbonate polymer component, and an inorganic aluminum phosphinate flame-retardant component. Such compositions are useful for applications where high flame performance, high modulus, high impact resistance, and high heat deflection temperatures are desired. The compositions are useful for making molded articles. This invention also relates to processes to produce the described non-halogen flame-retardant compositions and processes to produce molded articles from such compositions.
    Type: Application
    Filed: December 1, 2015
    Publication date: September 14, 2017
    Inventor: Chetan M. Makadia
  • Publication number: 20160083560
    Abstract: The present invention relates to flame retardant thermoplastic polyurethane (TPU) compositions, and more particularly to flame retardant thermoplastic polyurethane compositions comprising non-halogen flame retardants. The TPU compositions of this invention are useful for applications where high flame performance, optionally low smoke properties, as well as high tensile strength are desirable, such as wire and cable applications, film applications, molding applications, and the like. This invention also relates to processes to produce the described non-halogen flame retardant TPU compositions and processes to produce wire and cable jacketing from such compositions.
    Type: Application
    Filed: April 21, 2014
    Publication date: March 24, 2016
    Inventors: Bela B Fudala, Ann Giovannitti-Jensen, Nico Rems, Wim Cravillon, Chetan M. Makadia
  • Publication number: 20150152222
    Abstract: The present invention relates to flame retardant thermoplastic polyurethane (TPU) compositions, and more particularly to flame retardant thermoplastic polyurethane compositions comprising non-halogen flame retardants. The TPU compositions are useful for applications where high flame performance, and optionally low smoke properties, as well as high tensile strength are desirable, such as wire and cable applications, film applications, molding applications, and the like. This invention also relates to processes to produce the non-halogen flame retardant TPU compositions and processes to produce wire and cable jacketing from such compositions.
    Type: Application
    Filed: June 5, 2013
    Publication date: June 4, 2015
    Inventors: Chetan M. Makadia, Ann Giovannitti-Jensen
  • Patent number: 8957141
    Abstract: A non-halogen flame retardant thermoplastic polyurethane composition containing: a) an organic non-halogenated flame retardant package which contains non-reacted components, i) an organic phosphate compound which is melamine free, ii) a mixture of an organic phosphate in combination with an organic phosphoric acid; and iii) a zinc oxide, b) a stabilizer, c) optionally inorganic flame retardant components, and d) optionally non-flame retardant additives, resulting in a TPU composition with excellent tensile strength and improved high flame performance and low smoke properties.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: February 17, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventor: Chetan M. Makadia
  • Publication number: 20130330468
    Abstract: A non-halogen flame retardant thermo-plastic polyurethane composition containing: a) an organic non-halogenated flame retardant package which contains non-reacted components, i) an organic phosphate compound which is melamine free, ii) a mixture of an organic phosphate in combination with an organic phosphoric acid; and iii) a zinc oxide, b) a stabilizer, c) optionally inorganic flame retardant components, and d) optionally non-flame retardant additives, resulting in a TPU composition with excellent tensile strength and improved high flame performance and low smoke properties.
    Type: Application
    Filed: August 24, 2011
    Publication date: December 12, 2013
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventor: Chetan M. Makadia