Patents by Inventor Nihan Nugay
Nihan Nugay 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: 20230287167Abstract: A method of preparing a polyisobutylene-based polyurethane for making heart valves is disclosed, wherein the method includes providing a polyisobutylene (PIB) polymer, freshly distilling a diisocyanate compound to create a freshly distilled diisocyanate and providing a chain extender. When the polyisobutylene polymer, the freshly distilled diisocyanate, and the chain extender are combined together by mixing, the created polyisobutylene-based polyurethane exhibits a higher number average molecular weight, a higher ultimate strength, a higher elongation, and a greater toughness than a polyisobutylene-based polyurethane made without a freshly distilled diisocyanate, which makes the polymer particularly useful as a bioprosthetic heart valve.Type: ApplicationFiled: August 5, 2021Publication date: September 14, 2023Inventors: Joseph KENNEDY, Turgut NUGAY, Nihan NUGAY, Tejal DEODHAR, Geoff MOGGRIDGE, Ruhi PATEL
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Patent number: 11161928Abstract: A star block copolymer and a thermoplastic elastomer including plurality of the star block copolymers and a method of making both is taught. The star block copolymers of the present invention include a core component having a styrene oligomer wherein arms emanate from the core component and the arms are poly(isobutylene-block-styrene) diblock copolymers.Type: GrantFiled: March 17, 2020Date of Patent: November 2, 2021Assignee: The University of AkronInventors: Joseph Kennedy, Turgut Nugay, Nihan Nugay
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Patent number: 11142596Abstract: A polyisobutylene-based polymer network comprising the thiol-ene reaction product of at least two thiol-terminated polyisobutylene precursor polymers and at least one multi-functional allyl-containing precursor moiety or polymer in the presence of light or heat. The at least two thiol-terminated polyisobutylene precursor polymers have at least two thiol end groups. When each polyisobutylene precursor polymer has only two thiol end groups then the allyl-containing precursor moiety or polymer has at least three functional groups, and wherein when the allyl-containing precursor moiety or polymer has two functional groups then each polyisobutylene precursor polymer has at least three thiol end groups.Type: GrantFiled: March 11, 2019Date of Patent: October 12, 2021Assignee: The University of AkronInventors: Joseph Kennedy, Turgut Nugay, Nihan Nugay
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Patent number: 10899869Abstract: The present invention generally relates to polyurethanes and polyurethane nanocomposites having improved mechanical, rheological, and thermal properties over ordinarily produced polyurethanes and polyurethane nanocomposites. Such polyurethanes and polyurethane nanocomposites include very small amounts of a small chain diol, such as glycerol, and more specifically, between 0.01 and 4 weight percent of the small chain diol, based on the total polymer composition.Type: GrantFiled: January 24, 2020Date of Patent: January 26, 2021Assignee: THE UNIVERSITY OF AKRONInventors: Joseph Kennedy, Turgut Nugay, Nihan Nugay
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Patent number: 10889712Abstract: A thermoplastic elastomeric network is taught. The thermoplastic elastomer network includes hyperbranched styrenic block copolymers and styrenic block copolymers physically crosslinked though aggregation. Additionally, the hyperbranched styrenic block copolymers of the thermoplastic elastomeric network are a plurality of styrenic block copolymers chemically crosslinked.Type: GrantFiled: September 18, 2018Date of Patent: January 12, 2021Assignee: THE UNIVERSITY OF AKRONInventors: Joseph P. Kennedy, Turgut Nugay, Nihan Nugay
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Publication number: 20200392268Abstract: A polyisobutylene-based polymer network comprising the thiol-ene reaction product of at least two thiol-terminated polyisobutylene precursor polymers and at least one multi-functional allyl-containing precursor moiety or polymer in the presence of light or heat. The at least two thiol-terminated polyisobutylene precursor polymers have at least two thiol end groups. When each polyisobutylene precursor polymer has only two thiol end groups then the allyl-containing precursor moiety or polymer has at least three functional groups, and wherein when the allyl-containing precursor moiety or polymer has two functional groups then each polyisobutylene precursor polymer has at least three thiol end groups.Type: ApplicationFiled: March 11, 2019Publication date: December 17, 2020Applicant: THE UNIVERSITY OF AKRONInventors: Joseph Kennedy, Turgut Nugay, Nihan Nugay
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Patent number: 10793661Abstract: A star block copolymer and a thermoplastic elastomer including plurality of the star block copolymers and a method of making both is taught. The star block copolymers of the present invention include a core component having either a styrene oligomer or ?-methyl styrene oligomer, wherein arms emanate from the core component and the arms are poly(isobutylene-block-styrene) diblock copolymers.Type: GrantFiled: April 21, 2020Date of Patent: October 6, 2020Assignee: THE UNIVERSITY OF AKRONInventors: Joseph P. Kennedy, Turgut Nugay, Nihan Nugay
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Centrally functionalizable living cationic polymer or copolymer and methods of synthesizing the same
Patent number: 10774185Abstract: In various embodiments, the present invention is directed to a centrally-functionalizable living cationic polymer or copolymer having a centrally-substituted tetraene group having the formula wherein each R is selected from the group consisting of a polymer or a copolymer, such as a polyisobutylene polymer or a poly(isobutylene-b-styrene) copolymer.Type: GrantFiled: January 25, 2019Date of Patent: September 15, 2020Assignee: The University of AkronInventors: Joseph P. Kennedy, Turgut Nugay, Nihan Nugay, Tejal J. Deodhar, Susan Dollinger -
Publication number: 20200247935Abstract: A star block copolymer and a thermoplastic elastomer including plurality of the star block copolymers and a method of making both is taught. The star block copolymers of the present invention include a core component having either a styrene oligomer or ?-methyl styrene oligomer, wherein arms emanate from the core component and the arms are poly(isobutylene-block-styrene) diblock copolymers.Type: ApplicationFiled: April 21, 2020Publication date: August 6, 2020Applicant: THE UNIVERSITY OF AKRONInventors: Joseph P. KENNEDY, Turgut NUGAY, Nihan NUGAY
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Publication number: 20200239620Abstract: The present invention generally relates to polyurethanes and polyurethane nanocomposites having improved mechanical, rheological, and thermal properties over ordinarily produced polyurethanes and polyurethane nanocomposites. Such polyurethanes and polyurethane nanocomposites include very small amounts of a small chain diol, such as glycerol, and more specifically, between 0.01 and 4 weight percent of the small chain diol, based on the total polymer composition.Type: ApplicationFiled: January 24, 2020Publication date: July 30, 2020Applicant: THE UNIVERSITY OF AKRONInventors: Joseph KENNEDY, Turgut NUGAY, Nihan NUGAY
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Publication number: 20200216597Abstract: A star block copolymer and a thermoplastic elastomer including plurality of the star block copolymers and a method of making both is taught. The star block copolymers of the present invention include a core component having a styrene oligomer wherein arms emanate from the core component and the arms are poly(isobutylene-block-styrene) diblock copolymers.Type: ApplicationFiled: March 17, 2020Publication date: July 9, 2020Applicant: THE UNIVERSITY OF AKRONInventors: Joseph KENNEDY, Turgut NUGAY, Nihan NUGAY
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Publication number: 20200131294Abstract: A polystyrene-g-(polyisobutylene-b-polystyrene) is taught. The polystyrene-g-(polyisobutylene-b-polystyrene) is synthesized by first providing a polystyrene backbone. Once the polystyrene backbone is provided, the polystyrene backbone is acetylated to provide acetyl groups on the polystyrene backbone. Next, the acetyl groups are converted to —C(CH3)2OH groups. Finally, the living polymerization of isobutylene is initiated, which is then followed by the living block polymerization of styrene. A polymer network of polystyrene-g-(polyisobutylene-b-polystyrene)s is also provided.Type: ApplicationFiled: July 18, 2018Publication date: April 30, 2020Applicant: THE UNIVERSITY OF AKRONInventors: Joseph KENNEDY, Turgut NUGAY, Nihan NUGAY
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Patent number: 10626211Abstract: A star block copolymer and a thermoplastic elastomer including plurality of the star block copolymers and a method of making both is taught. The star block copolymers of the present invention include a core component having an ?-methylstyrene oligomer wherein arms emanate from the core component and the arms are poly(isobutylene-block-styrene) diblock copolymers.Type: GrantFiled: August 6, 2019Date of Patent: April 21, 2020Assignee: The University of AkronInventors: Joseph Kennedy, Turgut Nugay, Nihan Nugay
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Patent number: 10626207Abstract: A polystyrene-g-(polyisobutylene-b-polystyrene) is taught. The polystyrene-g-(polyisobutylene-b-polystyrene) is synthesized by first providing a polystyrene backbone. Once the polystyrene backbone is provided, the polystyrene backbone is acetylated to provide acetyl groups on the polystyrene backbone. Next, the acetyl groups are converted to —C(CH3)2OH groups. Finally, the living polymerization of isobutylene is initiated, which is then followed by the living block polymerization of styrene. A polymer network of polystyrene-g-(polyisobutylene-b-polystyrene)s is also provided.Type: GrantFiled: July 18, 2018Date of Patent: April 21, 2020Assignee: The University of AkronInventors: Joseph Kennedy, Turgut Nugay, Nihan Nugay
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Patent number: 10618999Abstract: In one or more embodiments, the present invention provide a polyisobutylene-based polyurethane-urea, and related method of preparation, wherein PIB-diols form the soft segment and a diisocyanate along with a well-defined combinations low molecular weight diol chain extenders and amino alcohol as co-chain extenders form the hard segments. In one or more embodiments, the present invention is directed to the use of judiciously chosen chain extender/co-chain extender combinations to enhance the strength of PUs by partially replacing urethane groups with urea groups by the use of amino alcohols to improve strength, while maintaining good processability. These thermoplastic PIB-PUU elastomers exhibit heretofore unattainable combinations of mechanical properties and processability.Type: GrantFiled: January 24, 2017Date of Patent: April 14, 2020Assignee: THE UNIVERSITY OF AKRONInventors: Joseph Kennedy, Kalman Toth, Nihan Nugay
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Publication number: 20200040121Abstract: A star block copolymer and a thermoplastic elastomer including plurality of the star block copolymers and a method of making both is taught. The star block copolymers of the present invention include a core component having an -methylstyrene oligomer wherein arms emanate from the core component and the arms are poly(isobutylene-block-styrene) diblock copolymers.Type: ApplicationFiled: August 6, 2019Publication date: February 6, 2020Applicant: THE UNIVERSITY OF AKRONInventors: Joseph KENNEDY, Turgut Nugay, Nihan Nugay
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CENTRALLY FUNCTIONALIZABLE LIVING CATIONIC POLYMER OR COPOLYMER AND METHODS OF SYNTHESIZING THE SAME
Publication number: 20190225757Abstract: In various embodiments, the present invention is directed to a centrally-functionalizable living cationic polymer or copolymer having a centrally-substituted tetraene group having the formula wherein each R is selected from the group consisting of a polymer or a copolymer, such as a polyisobutylene polymer or a poly(isobutylene-b-styrene) copolymer.Type: ApplicationFiled: January 25, 2019Publication date: July 25, 2019Applicant: THE UNIVERSITY OF AKRONInventors: JOSEPH P. KENNEDY, Turgut NUGAY, Nihan NUGAY, Tejal J. DEODHAR, Susan DOLLINGER -
Patent number: 10301421Abstract: Sulfur containing, hydroxyl-telechelic PIBs, hydrolytically and oxidatively resistant, biocompatible and biostable polyurethanes (PUs) made therefrom, and methods for making both are disclosed. Well-defined hydroxyl telechelic PIBs are synthesized by a thiol-ene click photochemical reaction between PIBs carrying unsaturated end groups and 2-mercaptoethanol (HS—CH2CH2—OH). This regioselective process affords HO—CH2CH2—S-PIB-S—CH2CH2—OH (abbreviated herein as HO—S-PIB-S—OH) in high yield. In some embodiments, these HO—S-PIB-S—OH polymers may be reacted with diisocyanates and a chain extender to form sulfur containing PIB-based PUs. These sulfur containing PIB-based PUs have been found to have properties and chemical stability that are very similar to that of PUs made from di-hydroxyl terminated PIBs (OH-PIB-OHs) without sulfur, but have surprisingly increased creep resistance and are easier and less expensive to make.Type: GrantFiled: August 26, 2015Date of Patent: May 28, 2019Assignee: THE UNIVERSITY OF AKRONInventors: Joseph Kennedy, Kalman Toth, Nihan Nugay, Turgut Nugay
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Patent number: 10280130Abstract: The present invention is directed to a new class of thermoplastic elastomers (TPEs) and processes for making them. In some embodiments of the present invention, the end groups of the multi-arm PIB copolymer is a conjugated diene, whereas the other component is a multi-functional dienophile. The components of the TPE of the present invention are chemically connected via the well-known Diels-Alder reaction which is thermally reversible (by the retro-Diels-Alder reaction) at moderately elevated temperatures. The reversibility of the Diels-Alder retro-Diels-Alder reactions allows the recovery of the original components of the TPE and thus its recyclability and also gives the TPE the ability to be reshaped or reformed.Type: GrantFiled: May 9, 2017Date of Patent: May 7, 2019Assignee: THE UNIVERSITY OF AKRONInventors: Joseph P. Kennedy, Turgut Nugay, Nihan Nugay
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Publication number: 20190092938Abstract: A thermoplastic elastomeric network is taught. The thermoplastic elastomer network includes hyperbranched styrenic block copolymers and styrenic block copolymers physically crosslinked though aggregation. Additionally, the hyperbranched styrenic block copolymers of the thermoplastic elastomeric network are a plurality of styrenic block copolymers chemically crosslinked.Type: ApplicationFiled: September 18, 2018Publication date: March 28, 2019Applicant: THE UNIVERSITY OF AKRONInventors: JOSEPH P. KENNEDY, Turgut NUGAY, Nihan NUGAY