Patents by Inventor Roger W. Day

Roger W. Day 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: 11578205
    Abstract: The disclosed technology provides thermoplastic polyurethane compositions having antimicrobial properties while still maintaining good physical properties and good non-fouling properties, methods of making the same, and articles, including medical devices, made from such compositions. The disclosed technology includes a process of making an antimicrobial polymer composition, where the process includes mixing an antimicrobial additive into a base polymer and further includes mixing in a non-fouling additive, where the antimicrobial additive is chemically held in the composition and the antimicrobial and non-fouling additives do not negatively impact each other's effectiveness.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: February 14, 2023
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Roger W. Day, Hua Zhang, Richard Woofter, Umit G. Makal, Kiara L. Smith
  • Publication number: 20220153917
    Abstract: The disclosed technology provides thermoplastic polyurethane compositions having non-leaching antimicrobial properties while still maintaining good physical properties, methods of making the same, and articles, including medical devices, made from such compositions. The disclosed technology includes a process of making an antimicrobial polymer composition, where the process includes mixing an antimicrobial additive into a polymeric material; wherein said polymeric material comprises a polymeric backbone made up of urethane linkages derived from a polyisocyanate and a polyol; and wherein said mixing occurs under conditions that result in the breaking of a minority of said urethane bonds resulting in reactive isocyanate groups; and wherein two or more of said reactive isocyanate groups react with said antimicrobial additive to covalently bond said antimicrobial additive into the polymeric backbone of said polymeric material; resulting in an antimicrobial polymer composition.
    Type: Application
    Filed: January 31, 2022
    Publication date: May 19, 2022
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Hua Zhang, Roger W. Day, Richard Woofter, Umit G. Makal, Kiara L. Smith
  • Patent number: 11267930
    Abstract: The disclosed technology provides thermoplastic polyurethane compositions having non-leaching antimicrobial properties while still maintaining good physical properties, methods of making the same, and articles, including medical devices, made from such compositions. The disclosed technology includes a process of making an antimicrobial polymer composition, where the process includes mixing an antimicrobial additive into a polymeric material; wherein said polymeric material comprises a polymeric backbone made up of urethane linkages derived from a polyisocyanate and a polyol; and wherein said mixing occurs under conditions that result in the breaking of a minority of said urethane bonds resulting in reactive isocyanate groups; and wherein two or more of said reactive isocyanate groups react with said antimicrobial additive to covalently bond said antimicrobial additive into the polymeric backbone of said polymeric material; resulting in an antimicrobial polymer composition.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: March 8, 2022
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Hua Zhang, Roger W. Day, Richard Woofter, Umit G. Makal, Kiara L. Smith
  • Publication number: 20210277231
    Abstract: The disclosed technology provides thermoplastic polyurethane compositions having antimicrobial properties while still maintaining good physical properties and good non-fouling properties, methods of making the same, and articles, including medical devices, made from such compositions. The disclosed technology includes a process of making an antimicrobial polymer composition, where the process includes mixing an antimicrobial additive into a base polymer and further includes mixing in a non-fouling additive, where the antimicrobial additive is chemically held in the composition and the antimicrobial and non-fouling additives do not negatively impact each other's effectiveness.
    Type: Application
    Filed: January 30, 2018
    Publication date: September 9, 2021
    Inventors: Roger W. Day, Hua Zhang, Richard Woofter, Umit G. Makal, Kiara L. Smith
  • Patent number: 10827757
    Abstract: A biocidally active polymer composition formed from an oligomeric or polymeric additive and a thermoplastic polyurethane polymer is disclosed. The biocidally active polymer may further include a non-fouling and/or non-thrombogenic polymer. The biocidally active polymer provides biocidally active properties, and may also provide non-fouling and/or non-thrombogenic properties. The composition is particularly useful in articles and materials for medical applications.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: November 10, 2020
    Inventors: Roger W. Day, Hua Zhang, Richard Woofter, Umit G. Makal
  • Patent number: 10829606
    Abstract: A surface-modified polymer composition formed from an oligomeric or polymeric additive and a base polymer is disclosed. The surface-modified polymer provides non-fouling and/or non-thrombogenic properties. The composition is particularly useful in articles and materials for medical applications.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: November 10, 2020
    Inventors: Roger W. Day, Hua Zhang, Umit G. Makal, Richard Woofter, Kiara Smith
  • Publication number: 20190389998
    Abstract: The disclosed technology provides thermoplastic polyurethane compositions having non-leaching antimicrobial properties while still maintaining good physical properties, methods of making the same, and articles, including medical devices, made from such compositions. The disclosed technology includes a process of making an antimicrobial polymer composition, where the process includes mixing an antimicrobial additive into a polymeric material; wherein said polymeric material comprises a polymeric backbone made up of urethane linkages derived from a polyisocyanate and a polyol; and wherein said mixing occurs under conditions that result in the breaking of a minority of said urethane bonds resulting in reactive isocyanate groups; and wherein two or more of said reactive isocyanate groups react with said antimicrobial additive to covalently bond said antimicrobial additive into the polymeric backbone of said polymeric material; resulting in an antimicrobial polymer composition.
    Type: Application
    Filed: January 30, 2018
    Publication date: December 26, 2019
    Inventors: Hua Zhang, Roger W. Day, Richard Woofter, Umit G. Makal, Kiara L. Smith
  • Publication number: 20190191703
    Abstract: A biocidally active polymer composition formed from an oligomeric or polymeric additive and a thermoplastic polyurethane polymer is disclosed. The biocidally active polymer may further include a non-fouling and/or non-thrombogenic polymer. The biocidally active polymer provides biocidally active properties, and may also provide non-fouling and/or non-thrombogenic properties. The composition is particularly useful in articles and materials for medical applications.
    Type: Application
    Filed: October 12, 2016
    Publication date: June 27, 2019
    Inventors: Roger W. Day, Hua Zhang, Richard Woofter, Umit G. Makal
  • Patent number: 10023738
    Abstract: The invention provides a bioabsorbable blend of (i) a polymer component comprising polylactic acid (PLA), polyglycolic acid (PGA), a copolymer of PLA and PGA, or any combination thereof and (ii) thermoplastic polyurethane (TPU) tailored to a medical application, and a process for making the same. In some embodiments, the TPU comprises units derived from a diol chain extender, a diisocyanate, and a polyol formulated to provide a set biodegradation rate in combination with at least one physical property. The blend of the invention provides useful materials for medical applications that have the individual benefits of polylactic acid and TPU while moderating each material's typical limitations.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: July 17, 2018
    Assignee: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Umit G. Makal, Roger W. Day
  • Publication number: 20180105665
    Abstract: A surface-modified polymer composition formed from an oligomeric or polymeric additive and a base polymer is disclosed. The surface-modified polymer provides non-fouling and/or non-thrombogenic properties. The composition is particularly useful in articles and materials for medical applications.
    Type: Application
    Filed: April 22, 2016
    Publication date: April 19, 2018
    Inventors: Roger W. Day, Hua Zhang, Umit G. Makal, Richard Woofter, Kiara Smith
  • Publication number: 20170226271
    Abstract: The polymer compositions described herein include the reaction product obtained from a mixture that includes: (i) a hydroxyl terminated intermediate containing at least one furan functional group; and (ii) a polyisocyanate component. The polymer compositions may further include a polymaleimide compound which may be (a) added as a component of the polymer composition, (b) incorporated into the structure of the hydroxyl terminated intermediate containing at least one furan functional group, or (c) both. The resulting polymer composition is capable of thermally reversible crosslinking.
    Type: Application
    Filed: July 29, 2015
    Publication date: August 10, 2017
    Inventors: Umit G. Makal, Roger W. Day, David M. Haddleton, Christopher J. Summers
  • Patent number: 9546242
    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 present invention also provides the described TPU compositions that are further grafted with vinyl alkoxysilane moieties allowing for crosslinked networks of the TPU compositions. The present invention also provides plasticizer-free, very soft TPU compositions without the processing difficulties often associated with such materials. The invention further provides means of reducing the surface tension of a TPU composition which can allow for improved blend compositions, and means of crosslinking the described TPU compositions.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: January 17, 2017
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Umit G. Makal, Bryce W. Steinmetz, Qiwei Lu, Roger W. Day
  • Publication number: 20160083540
    Abstract: The present invention relates to articles made from thermoplastic polyurethane (TPU) compositions that have crystalline chain ends. The TPU compositions used to make the articles of the invention can provide reduced stickiness and/or tackiness, while maintaining other desirable physical properties, leading to significantly improved handling and processability.
    Type: Application
    Filed: May 21, 2014
    Publication date: March 24, 2016
    Inventors: Umit G. Makal, Bryce W. Steinmetz, Qiwei Lu, Roger W. Day
  • Publication number: 20150299377
    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 present invention also provides the described TPU compositions that are further grafted with vinyl alkoxysilane moieties allowing for crosslinked networks of the TPU compositions. The present invention also provides plasticizer-free, very soft TPU compositions without the processing difficulties often associated with such materials. The invention further provides means of reducing the surface tension of a TPU composition which can allow for improved blend compositions, and means of crosslinking the described TPU compositions.
    Type: Application
    Filed: October 14, 2013
    Publication date: October 22, 2015
    Applicant: Lubrizol Advanced Materials, Inc.
    Inventors: Umit G. Makal, Bryce W. Steinmetz, Qiwei Lu, Roger W. Day
  • Publication number: 20150291791
    Abstract: The invention provides a bioabsorbable blend of (i) a polymer component comprising polylactic acid (PLA), polyglycolic acid (PGA), a copolymer of PLA and PGA, or any combination thereof and (ii) thermoplastic polyurethane (TPU) tailored to a medical application, and a process for making the same. In some embodiments the TPU comprises units derived from a diol chain extender, a diisocyanate, and a polyol formulated to provide a set biodegradation rate in combination with at least one physical property. The blend of the invention provides useful materials for medical applications that have the individual benefits of polylactic acid and TPU while moderating each material's typical limitations.
    Type: Application
    Filed: October 14, 2013
    Publication date: October 15, 2015
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Umit G. Makal, Roger W. Day
  • Publication number: 20150148514
    Abstract: A system and method for producing a bioabsorbable thermoplastic polyurethane tailored to a medical application are provided. The method includes identifying suitable thermoplastic polyurethane properties based on the medical application. The thermoplastic polyurethane comprises units derived from a diol chain extender, a diisocyanate, and a polyol. The thermoplastic polyurethane properties include a biodegradation rate and at least one physical property. The method includes identifying a base thermoplastic polyurethane and altering at least one parameter of the base thermoplastic polyurethane which relates to the desired thermoplastic polyurethane properties to generate a candidate thermoplastic polyurethane. The altering may be performed iteratively until the suitable range of thermoplastic polyurethane properties based on the medical application is met.
    Type: Application
    Filed: June 24, 2013
    Publication date: May 28, 2015
    Inventors: Umit G. Makal, Roger W. Day
  • Patent number: 8722794
    Abstract: The present invention relates to a melt processable copolyetheramide made by reacting (a) one or more segments of polyamide hard blocks derived from a lactam-terminated diisocyanate and a lactam monomer, and (b) one or more segments of polyether soft blocks derived from a polyether diol. The invention further provides for methods of making said copolyetheramide, including a continuous extruder method of production.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: May 13, 2014
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Umit G. Makal, Bryce W. Steinmetz, Roger W. Day, Feina Cao
  • Publication number: 20110213076
    Abstract: The present invention relates to a melt processable copolyetheramide made by reacting (a) one or more segments of polyamide hard blocks derived from a lactam-terminated diisocyanate and a lactam monomer, and (b) one or more segments of polyether soft blocks derived from a polyether diol. The invention further provides for methods of making said copolyetheramide, including a continuous extruder method of production.
    Type: Application
    Filed: February 24, 2011
    Publication date: September 1, 2011
    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.
    Inventors: Umit G. Makal, Bryce W. Steinmetz, Roger W. Day, Feina Cao
  • Patent number: 5319068
    Abstract: Energetic binders, and, more specifically, a class of nitramine-containing polyether polymers characterized by favorable viscosity and glass transition temperature, as well as resistance to hydrolysis are prepared.
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: June 7, 1994
    Assignee: Olin Corporation
    Inventors: Roger W. Day, Rahim Hani
  • Patent number: 5185226
    Abstract: An electrostatic method is disclosed for providing multicolor imaging from a single toner bath. The toner bath is a blend of individual toners, each of which contains a color precursor different from the others. Also disclosed is a method for the double encapsulation of toner particles to produce toner particles characterized by multiple encapsulation.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: February 9, 1993
    Assignee: Olin Corporation
    Inventors: Paul V. Grosso, Feagin A. Wing, Jr., Michael J. Morgan, Renate C. Stegmeier, Roger W. Day, Willard F. Burt