Patents by Inventor Daniel E. Verral

Daniel E. Verral 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).

  • ALKOXYLATION PROCESSES AND CATALYSTS THEREFOR
    Publication number: 20110297877
    Abstract: A process of contacting an alkylene oxide with 2-methoxy-1-propanol (PM1) in the presence of an oligomeric Schiff base metal complex catalyst is disclosed. Further, a process involving contacting an alkylene oxide with an alkyl alcohol using an oligomeric Schiff base metal complex as a catalyst is also disclosed. Additionally, novel compositions which can be used as catalysts in processes involving the contacting of an alkyl alcohol with an alkylene oxide are also disclosed.
    Type: Application
    Filed: February 25, 2010
    Publication date: December 8, 2011
    Applicant: Dow Global Technologies LLC
    Inventors: Tina L. Arrowood, Marty W. Degroot, Paul R. Elowe, Derrick W. Flick, Jason C. MacDonald, Peter N. Nickias, Daniel E. Verral
  • Method for making polyethylene glycol carbonates
    Patent number: 7816484
    Abstract: A method for preparing a polyalkylene glycol carbonate is disclosed comprising reacting a hydroxyl functional polyalkylene glycol and a reagent selected from carbonates and chloroformates in the presence of an aromatic solvent and an amine.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: October 19, 2010
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventor: Daniel E. Verral
  • METHOD FOR MAKING POLYETHYLENE GLYCOL CARBONATES
    Publication number: 20090054621
    Abstract: A method for making a alkyl polyethylene glycol carbonate by the step of: (a) reacting mono-alkyl polyethylene glycol (MPEG) such as MPEG having an average molecular weight of 20,000 grams per mole and a polydispersity of less than 1.1, a chloroformate such as p-nitrophenyl chloroformate, an aromatic solvent such as toluene and an amine such as tripentyl amine. And, a method for making a multi-armed polyethylene glycol carbonate by the step of: (a) reacting a multi-armed polyethylene glycol having at least one hydroxyl group, a chloroformate, an aromatic solvent and an amine.
    Type: Application
    Filed: February 27, 2007
    Publication date: February 26, 2009
    Applicant: DR. REDDY'S LABORATORIES (EU) LIMITED
    Inventor: Daniel E. Verral