Patents by Inventor Rolland Shin-Yuan Ro

Rolland Shin-Yuan Ro 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).

  • Functionally substituted terpolymers and tetrapolymers of alpha-olefins and process for manufacturing functional substituted copolymers
    Patent number: 4017669
    Abstract: Addition terpolymers of ethylene with an .alpha.-olefin and an unsaturated, functionally substituted monomer. Addition tetrapolymers of ethylene with an .alpha.-olefin having 3-18 carbon atoms, a nonconjugated diene having only one polymerizable double bond, and an unsaturated, functionally substituted monomer. A process for preparing copolymers of ethylene with an unsaturated functionally substituted monomer, and optionally also with at least one of the following: an .alpha.-olefin having 3-18 carbon atoms and a nonconjugated diene having only one polymerizable double bond; wherein the monomers are contacted in the presence of a vanadium compound soluble in hydrocarbons and chlorinated hydrocarbons, in which vanadium is in the oxidation state of at least +3, an organoaluminum compound, and an organic compound having at least one carbon atom substituted by three halogen atoms which can be chlorine or bromine.
    Type: Grant
    Filed: April 27, 1973
    Date of Patent: April 12, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John Wilfred Collette, Rolland Shin-Yuan Ro, Fred Max Sonnenberg