Patents by Inventor Muhammad Rabnawaz

Muhammad Rabnawaz 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).

  • Publication number: 20220259360
    Abstract: The disclosure generally relates to omniphobic compatibilizers, which include a polymerization reaction product between a first vinyl monomer, optionally a second vinyl crosslinking monomer, and a functionalized omniphobic polymer. The functionalized omniphobic polymer can include two or more vinyl functional groups or at least one free radical initiator functional group such that the reaction product forming the omniphobic compatibilizer can be a vinyl or free-radical polymerization product. The omniphobic compatibilizer can be incorporated into a UV-curable or a non-UV-curable thermoset omniphobic composition. The UV-curable composition can be a crosslinked polymerization reaction product between the omniphobic compatibilizer, a third vinyl monomer, and a fourth polyvinyl crosslinking monomer. The non-UV-curable composition can be a crosslinked polymerization reaction product between the omniphobic compatibilizer, a first thermosetting component, and a second thermosetting component.
    Type: Application
    Filed: July 3, 2020
    Publication date: August 18, 2022
    Inventors: Muhammad Rabnawaz, Muhammad Naveed
  • Patent number: 11396574
    Abstract: The disclosure relates to a self-healing omniphobic composition including a self-healing omniphobic polymer with a crosslinked backbone. The crosslinked backbone includes a reaction product between a polyisocyanate, a functionalized omniphobic polymer reactive therewith, a reversible polyfunctional linker including a hindered secondary amino group and/or an aromatic hydroxy group, and one or more polymeric backbone components. The crosslinked backbone includes reversible urea or reversible urethane bonds between the reversible polyfunctional linker and the polyisocyanate, which in turn provide self-healing properties to the omni-phobic composition. The self-healing omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The omniphobic composition can be used as a coating on any of a variety of substrates to provide self-healing omniphobic properties to a surface of the substrate.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: July 26, 2022
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventors: Muhammad Rabnawaz, Ajmir Khan, Kun Huang
  • Publication number: 20220162402
    Abstract: The disclosure relates to thermally reversibly crosslinked polyolefins (TRC-PO) and methods for making the same. A TRC-PO can be formed by reactive melt-processing a mixture including (i) a polyolefin, (ii) an initiator, and (iii) a reversible crosslinker. The reversible crosslinker includes (A) a grafting agent moiety selected from unsaturated cyclic anhydrides, unsaturated cyclic imides, cyclic nitroxides, and ring-opened analogs thereof, and (B) a crosslinking moiety bound to the cyclic grafting agent moiety. This reactive melt-processing, for example including reactive extrusion, forms a thermally reversibly crosslinked (TRC) polyolefin with polyolefin chains reversibly crosslinked via the reversible crosslinkers, which provide dynamic covalent bonds, such as siloxanes and esters, that are amenable to melt re-processing to re-from or otherwise re-use the TRC-PO while still retaining the reversible crosslinks after re-processing.
    Type: Application
    Filed: November 22, 2021
    Publication date: May 26, 2022
    Inventors: Muhammad Rabnawaz, Muhammad Naveed
  • Publication number: 20220145088
    Abstract: The disclosure relates to methods for forming an omniphobic thermoset composition, such as an omniphobic polyurethane or epoxy composition. First and second thermosetting components are applied to a substrate and partially cured. A functionalized hydrophobic/oleophobic/omniphobic polymer which is reactive with at least the first thermosetting component is then applied to the coated substrate, which is then further cured to form a thermoset omniphobic coating on the substrate. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch resistant, ink/paint resistant, and optically clear.
    Type: Application
    Filed: January 21, 2022
    Publication date: May 12, 2022
    Inventors: Muhammad Rabnawaz, Fahad Khan
  • Publication number: 20220064366
    Abstract: The disclosure relates to a thermoset omniphobic composition, which includes a thermoset polymer with first, second, and third backbone segments, urethane groups linking the first and third backbone segments, and urea groups linking the first and second backbone segments. The first, second, and third backbone segments generally correspond to urethane or urea reaction products of polyisocyanate(s), amine-functional hydrophobic polymer(s), and polyol(s), respectively. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch resistant, ink/paint resistant, dirt-repellent, and optically clear.
    Type: Application
    Filed: September 10, 2021
    Publication date: March 3, 2022
    Inventors: Muhammad Rabnawaz, Fahad Khan, Nazim Uddin
  • Publication number: 20220057280
    Abstract: The disclosure relates to an impact detection composite as well as related articles and methods. The impact detection composite incorporates a plasticizer and plurality of microcapsules into a polymeric matrix. The microcapsules serve as a means for detecting impact on the composite or a substrate to which it is attached. A sufficiently forceful impact can rupture the microcapsules and release an indicator therein. Presence of the plasticizer in the matrix facilitates diffusion of the indicator through the matrix once released. This allows for rapid detection of the indicator, for example as a visually observable color or color change at an external surface of the impact detection composite. The detectable change provides a tamper-proof and non-electronic means for detecting an impact. The impact detection composites can be incorporated into a variety of articles and used in a variety of settings, for example to monitor personal safety, to monitor article integrity, etc.
    Type: Application
    Filed: August 13, 2021
    Publication date: February 24, 2022
    Inventors: Muhammad Rabnawaz, Ramadan Mousa Abouomar, Gary J. Blanchard, Sheryl Blanchard
  • Publication number: 20220040730
    Abstract: The disclosure relates to a self-healing laminate composition. The composition includes a first, self-healing layer with a self-healing polymer and a second, mechanical layer adjacent to the first layer. The second layer includes any desired polymer, for example a crosslinked polymer, a thermoplastic polymer, or a functional thermoset polymer. Self-healing polymers with dynamic covalent bonds are suitable, for example those with dynamic urea bonds and/or dynamic urethane bonds. A self-healing polymer that is damaged can undergo autonomous repair when separated surfaces re-contact each other due to the soft nature of the self-healing polymer, whereupon reversible bonds can reform to rejoin and repair the damaged self-healing polymer. When the self-healing laminate according to the disclosure is damaged, the self-healing mechanism of the first layer can cause the repair of both layers.
    Type: Application
    Filed: January 29, 2020
    Publication date: February 10, 2022
    Inventors: Muhammad Rabnawaz, Ajmir Khan
  • Publication number: 20220041787
    Abstract: The disclosure relates to a self-healing omniphobic composition including a self-healing omniphobic polymer with a crosslinked backbone. The crosslinked backbone includes a reaction product between a polyisocyanate, a functionalized omniphobic polymer reactive therewith, a reversible polyfunctional linker including a hindered secondary amino group and/or an aromatic hydroxy group, and one or more polymeric backbone components. The crosslinked backbone includes reversible urea or reversible urethane bonds between the reversible polyfunctional linker and the polyisocyanate, which in turn provide self-healing properties to the omni-phobic composition. The self-healing omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The omniphobic composition can be used as a coating on any of a variety of substrates to provide self-healing omniphobic properties to a surface of the substrate.
    Type: Application
    Filed: January 2, 2020
    Publication date: February 10, 2022
    Inventors: Muhammad Rabnawaz, Ajmir Khan, Kun Huang
  • Publication number: 20220000715
    Abstract: A medication bottle includes an outer container wall, an inner container wall and a fluid, such as an aversive liquid, located between the walls. In another aspect, the fluid is located within separate compartments or channels located between the walls where the walls contact or are secured to each other. A further aspect provides a removeable cap including multiple sensors, at least one of which is a biometric sensor.
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Applicants: Board of Trustees of Michigan State University, Board of Regents of the University of Nebraska
    Inventors: Bahar Aliakbarian, Muhammad Rabnawaz, Susan E. Selke, Krystal Cheng, Arun Ross, Austin Cozzo, Anurag Chowdhury, Ali Tamayol, Carina Russell, Prem Chahal
  • Patent number: 11155732
    Abstract: The disclosure relates to omniphobic coatings, related articles including such coatings, and related method for forming such coatings or articles, for example biobased and/or biodegradable omniphobic coatings. The omniphobic coating includes a reaction product between an amino-functional polymer and an amino-reactive functionalized omniphobic polymer having a glass transition temperature (Tg) of 60° C. or less. The omniphobic coating has a weight ratio of amino-functional polymer relative to functionalized omniphobic polymer of at least 1 or 2. A corresponding omniphobic coated article can include the omniphobic coating on a porous substrate such as a cellulosic or paper substrate, for example to provide a water- and oil/fat/grease-resistant coating for a paper-based product.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: October 26, 2021
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventors: Muhammad Rabnawaz, Zhao Li
  • Patent number: 11135131
    Abstract: A medication bottle includes an outer container wall, an inner container wall and a fluid, such as an aversive liquid, located between the walls. In another aspect, the fluid is located within separate compartments or channels located between the walls where the walls contact or are secured to each other. A further aspect provides a removeable cap including multiple sensors, at least one of which is a biometric sensor.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: October 5, 2021
    Assignees: Board of Trustees of Michigan State University, Board of Regents of the University of Nebraska
    Inventors: Bahar Aliakbarian, Muhammad Rabnawaz, Susan E. Selke, Krystal Cheng, Arun Ross, Austin Cozzo, Anurag Chowdhury, Ali Tamayol, Carina Russell, Prem Chahal
  • Patent number: 11135617
    Abstract: The disclosure relates to an omniphobically coated fluid channel including a channel defining an interior channel surface and a flow volume, and a thermoset omniphobic composition as a coating on the interior channel surface. The thermoset omniphobic composition (such as an omniphobic polyurethane or epoxy composition) includes a thermoset polymer with first, second, and third backbone segments. The first, second, and third backbone segments can correspond to urethane or urea reaction products of polyisocyanate(s), amine-functional omniphobic polymer(s), and polyol(s), respectively, for omniphobic polyurethanes. Similarly, the first, second, and third backbone segments can correspond to urea or beta-hydroxy amine reaction products of polyamine(s), isocyanate-functional omniphobic polymer(s), and polyepoxide(s), respectively, for omniphobic epoxies.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: October 5, 2021
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventor: Muhammad Rabnawaz
  • Patent number: 11118003
    Abstract: The disclosure relates to a thermoset omniphobic composition, which includes a thermoset polymer with first, second, and third backbone segments, urethane groups linking the first and third backbone segments, and urea groups linking the first and second backbone segments. The first, second, and third backbone segments generally correspond to urethane or urea reaction products of polyisocyanate(s), amine-functional hydrophobic polymer(s), and polyol(s), respectively. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch resistant, ink/paint resistant, dirt-repellent, and optically clear.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: September 14, 2021
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventors: Muhammad Rabnawaz, Fahad Khan, Nazim Uddin
  • Publication number: 20210253901
    Abstract: The disclosure relates to omniphobic coatings, related articles including such coatings, and related method for forming such coatings or articles, for example biobased and/or biodegradable omniphobic coatings. The omniphobic coating includes a reaction product between an amino-functional polymer and an amino-reactive functionalized omniphobic polymer having a glass transition temperature (Tg) of 60° C. or less. The omniphobic coating has a weight ratio of amino-functional polymer relative to functionalized omniphobic polymer of at least 1 or 2. A corresponding omniphobic coated article can include the omniphobic coating on a porous substrate such as a cellulosic or paper substrate, for example to provide a water- and oil/fat/grease-resistant coating for a paper-based product.
    Type: Application
    Filed: August 21, 2019
    Publication date: August 19, 2021
    Inventors: Muhammad Rabnawaz, Zhao Li
  • Publication number: 20210246333
    Abstract: The disclosure relates to omniphobic coatings, related articles including such coatings, and related method for forming such coatings or articles, for example biobased and/or biodegradable omniphobic coatings with high barrier properties. The omniphobic coating includes an oleophobic and hydrophilic first layer, and a hydrophobic and optionally oleophilic second layer adjacent to the first layer. A corresponding omniphobic coated article can include the omniphobic coating on a substrate such as a porous cellulosic or paper substrate, for example to provide a water- and oil/fat/grease-resistant coating for a paper-based product. The first layer of the omniphobic coating is adjacent to the substrate and the second layer is adjacent to the first layer at a position further from the substrate than the first layer.
    Type: Application
    Filed: June 2, 2020
    Publication date: August 12, 2021
    Inventors: Muhammad Rabnawaz, Syeda Shamila Hamdani
  • Patent number: 11053337
    Abstract: The disclosure relates to a thermoset omniphobic composition, which includes a thermoset polymer with first, second, and third backbone segments, first urethane groups linking the first and third backbone segments, and second urethane groups linking the first and second backbone segments. The first, second, and third backbone segments generally correspond to urethane reaction products of polyisocyanate(s), hydroxy-functional hydrophobic polymer(s), and polyol(s), respectively. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch-resistant, ink/paint resistant, dirt-repellent, and optically clear.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: July 6, 2021
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventor: Muhammad Rabnawaz
  • Publication number: 20210189152
    Abstract: Polyurethane-based and epoxy-based coating compositions are described that provide coatings and adhesives that are clear, amphiphobic and durable. Both water and hexadecane readily slide off these surfaces without leaving a residue. Coatings with thicknesses ranging from about 10 nm to about 10 ?m exhibited excellent transmittance properties. Such films exhibited durability against abrasion, ink-resistance, anti-graffiti, anti-fingerprint, and strong adhesion to glass surfaces. The coatings are applicable to electronic devices, fabrics, glass, etc. to prepare optically clear, stain-resistant, and smudge-resistant surfaces.
    Type: Application
    Filed: November 26, 2020
    Publication date: June 24, 2021
    Inventors: Heng Hu, Guojun Liu, Muhammad Rabnawaz
  • Patent number: 11015009
    Abstract: An unsaturated polycarbonate has the structure: wherein X and Y are each an OH group; a transition metal and an OH group; an OH group and a COOH group; or one or both of X and Y is independently —NH2, —SH, C?C, N3, C—C triple bond, C?C, an o-tosylate, or a halogen; m is 0 to 30,000 and n is 1 to 30,000, and (m+n) is 2 or greater; R1 is a C3-C20 group chosen from particular groups; R2 is H or a second similar C3-C20 group, and R3 is optionally a third C3-C20 group having one or more C?C terminal and/or internal double bonds; and R4 is optionally H or a fourth similar C3-C20 group optionally having one or more C?C terminal and/or internal double bonds; or R3 and R4 form a ring structure having one or more C?C double bonds and having 4 to 20 carbon atoms.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: May 25, 2021
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventor: Muhammad Rabnawaz
  • Patent number: 10947330
    Abstract: A method for encapsulating a catalyst in a dispersed polymer particle comprising dissolving a Group 8 to Group 11 transition metal containing catalyst and a self-dispersing polymer in a solvent; adding water and optionally a base under particle forming conditions to form a dispersed polymer encapsulated catalyst comprising particles having a population number average diameter between 10 and 300 nanometers is provided.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: March 16, 2021
    Assignees: ROHM AND HAAS COMPANY, THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
    Inventors: Damien Guironnet, Muhammad Rabnawaz, Ralph Even, Andrew Hughes, Joshua Katz
  • Publication number: 20210040348
    Abstract: The disclosure relates to methods for forming an omniphobic thermoset composition, such as an omniphobic polyurethane or epoxy composition. First and second thermosetting components are applied to a substrate and partially cured. A functionalized hydrophobic/oleophobic/omniphobic polymer which is reactive with at least the first thermosetting component is then applied to the coated substrate, which is then further cured to form a thermoset omniphobic coating on the substrate. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch resistant, ink/paint resistant, and optically clear.
    Type: Application
    Filed: April 9, 2019
    Publication date: February 11, 2021
    Inventors: Muhammad Rabnawaz, Fahad Khan