Patents by Inventor Warren E. Piers

Warren E. Piers 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).

  • Polymerization of i-butane in hydrocarbon media using bis(borane) co-initiators
    Patent number: 7196149
    Abstract: A method is provided for cationically polymerizing olefin monomer by employing the step of using a novel coinitiator in an organic phase or a neat monomer reaction phase. More specifically, a method is provided for cationically polymerizing olefin monomer by employing the step of using a novel coinitiator in an organic phase or a neat monomer reaction phase, wherein the organic phase is a hydrocarbon solution of the monomer or a halogenated-hydrocarbon solution of the monomer and wherein the neat-monomer reaction phase is a liquid monomer.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: March 27, 2007
    Assignee: The University of Akron
    Inventors: Scott Collins, Warren E. Piers, Stewart P. Lewis
  • Process for production of bis-(pentafluorophenyl) borane and use thereof for producition of base free zwitterionic homogeneous Ziegler-Natta olefin polymerization catalysts
    Patent number: 5496960
    Abstract: There is disclosed a new boron-containing compounds such as bis-(pentafluorophenyl)borane, (C.sub.6 F.sub.5).sub.2 BH and related compounds and a method for producing the compounds. The new borane is suitable for use as a hydroboration reagent for the rapid hydroboration of alkenes and alkynes. The borane is also suitable for use as a hydroboration reagent to produce useful boron reagents that can be used in Ziegler-Natta homogeneous olefin polymerization catalyst systems. Specifically, the borane reagent can be used to produce Cp.sub.2 Zr{.eta..sup.3 -CH(C.sub.6 H.sub.5)[(.mu.-H)B(C.sub.6 F.sub.5).sub.2 ]}, which exhibits an efficacy for polymerization of ethylene.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: March 5, 1996
    Assignee: University of Guelph
    Inventors: Warren E. Piers, Rupert E. von Haken Spence