Patents by Inventor Alexandru Dragos Asandei

Alexandru Dragos Asandei 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).

  • RING-OPENING POLYMERIZATION OF CYCLIC ESTERS, POLYESTERS FORMED THEREBY, AND ARTICLES COMPRISING THE POLYESTERS
    Publication number: 20100069598
    Abstract: Cyclic esters are polymerized in the presence of a catalytic amount of a Group 4 transition metal hydride. The method is capable of producing high molecular weight polyesters with low polydispersities. These high molecular weight polyesters exhibit improved mechanical properties and are useful in a variety of product applications.
    Type: Application
    Filed: November 23, 2009
    Publication date: March 18, 2010
    Inventor: Alexandru Dragos Asandei
  • Ring-opening polymerization of cyclic esters, polyesters formed thereby, and articles comprising the polyesters
    Patent number: 7671140
    Abstract: Cyclic esters are polymerized in the presence of a catalytic amount of a Group 4 transition metal hydride. The method is capable of producing high molecular weight polyesters with low polydispersities. These high molecular weight polyesters exhibit improved mechanical properties and are useful in a variety of product applications.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: March 2, 2010
    Assignee: The University of Connecticut
    Inventor: Alexandru Dragos Asandei
  • RING-OPENING POLYMERIZATION OF CYCLIC ESTERS, POLYESTERS FORMED THEREBY, AND ARTICLES COMPRISING THE POLYESTERS
    Publication number: 20080249255
    Abstract: Cyclic esters are polymerized in the presence of a catalytic amount of a Group 4 transition metal hydride. The method is capable of producing high molecular weight polyesters with low polydispersities. These high molecular weight polyesters exhibit improved mechanical properties and are useful in a variety of product applications.
    Type: Application
    Filed: April 3, 2008
    Publication date: October 9, 2008
    Inventor: Alexandru Dragos Asandei
  • CATALYZED MULTIPLE GRAFTING POLYMERIZATIONS
    Publication number: 20080234433
    Abstract: Methods of preparing a graft copolymer comprising a plurality of different grafts wherein the methods employ an epoxide macroinitiator and an early transition metal radical ring opening catalyst without the need for any epoxide protection/deprotection steps. Such a process results in graft copolymers having complex polymer architectures.
    Type: Application
    Filed: March 21, 2008
    Publication date: September 25, 2008
    Inventor: Alexandru Dragos Asandei