Patents by Inventor Hui Yee Yeong

Hui Yee Yeong 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).

  • METHOD FOR PRODUCING COPOLYMERS MADE FROM ISOBUTENE AND AT LEAST ONE VINYLAROMATIC COMPONENT
    Publication number: 20100292422
    Abstract: The invention relates to a method for producing copolymers made from isobutene and at least one vinylaromatic component. Said method consists of polymerising isobutene or a hydrocarbon mixture containing isobutene with at least one vinylaromatic compound in the presence of a solvent-stable transistion metal complex comprising slightly co-ordinating anions as a polymerisation catalyst. The invention also relates to copolymers made of isobutene and at least one vinylaromatic compound, which can be obtained by means of said inventive method, in addition to specific functionalisation products therefrom.
    Type: Application
    Filed: August 11, 2006
    Publication date: November 18, 2010
    Applicant: BASF SE
    Inventors: Hans Peter Rath, Hans-Michael Walter, Oskar Nuyken, Fritz Elmar Kuehn, Yanmei Zhang, Hui Yee Yeong, Brigitte Voit, Radha Krishnan Narayanan
  • METHOD FOR POLYMERISING ETHYLENICALLY UNSATURATED POLYISOBUTENE
    Publication number: 20090105432
    Abstract: The invention relates to a method for polymerising ethylenically unsaturated monomers, wherein ethylenically unsaturated monomers are polymerised in the presence of a solvent-stable transition metal complex having slightly co-ordinating anions as polymer catalysts. The invention also relates to specific solvent-stable transition metal complexes having slightly co-ordinating anions. The invention also relates to highly reactive copolymers which are made of monomers comprising isobutene and at least one vinylaromatic compound which can be obtained according to said inventive method.
    Type: Application
    Filed: August 11, 2006
    Publication date: April 23, 2009
    Applicant: BASF SE
    Inventors: Hans Peter Rath, Hans-Michael Walter, Oskar Nuyken, Fritz Elmar Kuehn, Yanmei Zhang, Hui Yee Yeong