Patents by Inventor Sara Arshad

Sara Arshad 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: 9181428
    Abstract: Moisture curable compositions including silylated polymers and methods for producing the same are provided. A two component moisture curable system for producing a cured or cross-linked silylated polymer having improved compression set properties is provided. The two component system comprises a first formulation and a second formulation. The first formulation comprises a silylated polymer, water, and filler and the second formulation comprises the silylated polymer, a curing catalyst comprising at least one Brønsted acid, and a moisture scavenger. The final cured formulation may have a compression set, determined by ASTM D395 or ISO 815-1, of less than 100%, and in some examples less than 50% and in some examples less than 15%. This demonstrated improvement in compression set not only allows the silylated polymers to be used in applications where cyclic loads are applied but also enhances product durability.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: November 10, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, Venkat S. Minnikanti, Dwight Latham, Sara Arshad, Rajat Duggal, William A. Koonce
  • Patent number: 8822606
    Abstract: Embodiment of the invention provide for compositions having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer may include a reaction product of at least a polyol having a nominal functionality of at least 2 and a isocyanate capped hydrosilylated polymer. The isocyanate capped hydrosilylated polymer may include a reaction product of at least one isocyanate and a hydrosilylated polymer. The hydrosilylated polymer may include a reaction product of a the reaction of at least a) a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule and having a number average molecular weight of between about 100 and about 5000 and b) a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: September 2, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Ling Zhang, Kamesh R. Vyakaranam, Sara Arshad, William A. Koonce
  • Patent number: 8822626
    Abstract: Embodiments of the invention provide for compositions including a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer comprises a reaction product of at least a isocyanate capped hydrosilylated polymer and a polyol having a nominal functionality of at least 2 which is at least one of a polycarbonate polyol, a natural oil based polyol, a polyoxyalkyleneamine, a difunctional aromatic amine, a polybutyloxide polyether polyol, and a polytetramethylene glycol.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: September 2, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Kameswara R. Vyakaranam, Ling Zhang, William A. Koonce, Sara Arshad, Venkat S. Minnikanti, Dwight D. Latham, Phillip S. Athey
  • Publication number: 20140228515
    Abstract: Moisture curable compositions including silylated polymers and methods for producing the same are provided. A two component moisture curable system for producing a cured or cross-linked silylated polymer having improved compression set properties is provided. The two component system comprises a first formulation and a second formulation. The first formulation comprises a silylated polymer, water, and filler and the second formulation comprises the silylated polymer, a curing catalyst comprising at least one Brønsted acid, and a moisture scavenger. The final cured formulation may have a compression set, determined by ASTM D395 or ISO 815-1, of less than 100%, and in some examples less than 50% and in some examples less than 15%. This demonstrated improvement in compression set not only allows the silylated polymers to be used in applications where cyclic loads are applied but also enhances product durability.
    Type: Application
    Filed: September 17, 2012
    Publication date: August 14, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, Venkat S. Minnikanti, Dwight Latham, Sara Arshad, Rajat Duggal, William A. Koonce
  • Publication number: 20130096274
    Abstract: Embodiments of the invention provide for compositions including a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer comprises a reaction product of at least a isocyanate capped hydrosilylated polymer and a polyol having a nominal functionality of at least 2 which is at least one of a polycarbonate polyol, a natural oil based polyol, a polyoxyalkyleneamine, a difunctional aromatic amine, a polybutyloxide polyether polyol, and a polytetramethylene glycol.
    Type: Application
    Filed: June 28, 2011
    Publication date: April 18, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Kameswara R. Vyakaranam, Ling Zhang, William A. Koonce, Sara Arshad, Venkat S. Minnikanti, Dwight D. Latham, Phillip S. Athey
  • Publication number: 20130090429
    Abstract: Embodiment of the invention provide for compositions having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer may include a reaction product of at least a polyol having a nominal functionality of at least 2 and a isocyanate capped hydrosilylated polymer. The isocyanate capped hydrosilylated polymer may include a reaction product of at least one isocyanate and a hydrosilylated polymer. The hydrosilylated polymer may include a reaction product of a the reaction of at least a) a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule and having a number average molecular weight of between about 100 and about 5000 and b) a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule.
    Type: Application
    Filed: June 29, 2011
    Publication date: April 11, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Ling Zhang, Kamesh R. Vyakaranam, Sara Arshad, William A. Koonce