Patents by Inventor Dana Garcia

Dana Garcia 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).

  • Triblock polyarylene polyether with polysiloxane segment and impact-improved blends thereof
    Patent number: 4871816
    Abstract: Polyarylene polyethers ("PAPE") with vinyl chain ends may be crosslinked to form networks with excellent physical and chemical properties except they tend to be brittle. In particular, a polysulfone ("PSU" made from bisphenol A and dichlorodiphenyl sulfone) with vinylbenzyl chain ends ("di-VB-PSU") is too brittle for many applications where impact resistance is essential. This brittleness is combatted by inserting a thermally stable rubbery poly(dimethylsiloxane) ("PDMS") segment having a number average molecular weight in the range from about 600 to about 5000 connected to di-VB-PSU segments by hydrosilylation in the presence of a Pt catalyst, to form a thermoplastic linear predominantly triblock oligomer with vinylbenzyl chain ends which are thermally crosslinkable.
    Type: Grant
    Filed: October 22, 1987
    Date of Patent: October 3, 1989
    Assignee: The B.F. Goodrich Company
    Inventors: Virgil Percec, Paul P. Nicholas, Dana Garcia