Patents by Inventor Pui K. Wong

Pui K. Wong 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).

  • Crystalline alphamonoolefin copolymers
    Patent number: 4667005
    Abstract: Solid copolymers of C.sub.2 -C.sub.8 alphamonolefins and an olefinic benzocyclobutene monomer of the formula ##STR1## where R.sub.1 is hydrogen or CH.sub.3 and R.sub.2 is --CH.sub.2).sub.n where n is 0 to 6 are claimed. Such copolymers can be easily crosslinked at temperatures above about 200.degree. C., resulting in improved dimensional stability above the melting temperatures.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: May 19, 1987
    Assignee: Shell Oil Company
    Inventor: Pui K. Wong
  • Olefinic benzocyclobutene polymers
    Patent number: 4667004
    Abstract: Solid homopolymers of an olefinic benzocyclobutene monomer of the formula ##STR1## where R.sub.1 is hydrogen or CH.sub.3 and R.sub.2 is --CH.sub.2 --.sub.n where n is 0 to 6 are claimed. Such polymers can be easily crosslinked at temperatures above about 200.degree. C.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: May 19, 1987
    Assignee: Shell Oil Company
    Inventor: Pui K. Wong
  • Amorphous ethylene/propylene polymers
    Patent number: 4622375
    Abstract: Solid amorphous copolymers of ethylene, propylene and an olefinic benzocyclobutene monomer of the formula ##STR1## where R.sub.1 is hydrogen or CH.sub.3 and R.sub.2 is --CH.sub.2 --.sub.n where n is 0 to 6 are claimed. Such copolymers can be easily crosslinked at temperatures above about 200.degree. C., resulting in elastomers having improved creep resistance.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: November 11, 1986
    Assignee: Shell Oil Company
    Inventor: Pui K. Wong
  • Butene-1/4-vinylcyclohexene copolymer
    Patent number: 4405772
    Abstract: Solid copolymers of butene-1 and 4-vinylcyclohexene prepared by copolymerizing the monomers in the presence of a titanium halide coordination catalyst have an unobvious balance of properties including a broader molecular weight distribution, shorter crystallization half-time, greater isotacticity and greater crystallinity than butene-1 homopolymers prepared with identical catalysts.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: September 20, 1983
    Assignee: Shell Oil Company
    Inventors: Pui K. Wong, Carl L. Willis, Thomas F. Brownscombe