Patents by Inventor Zahra Akbari

Zahra Akbari 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).

  • Polyolefin production using an improved catalyst system
    Patent number: 9035000
    Abstract: Polyolefin production using an improved catalyst system and, in particular, a method for production of a polyolefin is disclosed. One or more monomers are contacted with a catalyst system. The catalyst system includes titanium tetrachloride as a catalyst precursor and magnesium ethylate as a support for the catalyst precursor. The catalyst system also includes a hydrocarbyl aluminum cocatalyst represented by the formula R3Al, where R is an alkyl radical having 1 to 14 carbon atoms, and where the molar ratio of the hydrocarbyl aluminum cocatalyst to the titanium tetrachloride catalyst precursor ranges from 50:1 to 400:1. The catalyst system also includes a halogenated hydrocarbon as a promoter, where the molar ratio of the halogenated hydrocarbon promoter to the titanium tetrachloride catalyst precursor ranges from 0.001:1 to 300:1.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: May 19, 2015
    Inventors: Mehrdad Seifali Abbas-Abadi, Mehdi Nekoomanesh Haghighi, Naeimeh Bahri-Laleh, Zahra Akbari, Mohamad Reza Tavasoli, Seyed Heydar Mirjahanmardi
  • POLYOLEFIN PRODUCTION USING AN IMPROVED CATALYST SYSTEM
    Publication number: 20110152483
    Abstract: Polyolefin production using an improved catalyst system and, in particular, a method for production of a polyolefin is disclosed. One or more monomers are contacted with a catalyst system. The catalyst system includes titanium tetrachloride as a catalyst precursor and magnesium ethylate as a support for the catalyst precursor. The catalyst system also includes a hydrocarbyl aluminum cocatalyst represented by the formula R3Al, where R is an alkyl radical having 1 to 14 carbon atoms, and where the molar ratio of the hydrocarbyl aluminum cocatalyst to the titanium tetrachloride catalyst precursor ranges from 50:1 to 400:1. The catalyst system also includes a halogenated hydrocarbon as a promoter, where the molar ratio of the halogenated hydrocarbon promoter to the titanium tetrachloride catalyst precursor ranges from 0.001:1 to 300:1.
    Type: Application
    Filed: March 1, 2011
    Publication date: June 23, 2011
    Applicants: IRAN POLYMER AND PETROCHEMICAL INSTITUTE (IPPI), MAROON PETROCHEMICAL COMPANY
    Inventors: Mehrdad Seifali Abbas-Abadi, Mehdi Nekoomanesh Haghighi, Naeimeh Bahri-Laleh, Zahra Akbari, Mohamad Reza Tavasoli, Seyed Heydar Mirjahanmardi