Patents by Inventor Crystal A. Smith

Crystal A. Smith 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).

  • Polymetallic catalysts, method of preparing and polymers produced thereby
    Patent number: 6433119
    Abstract: Disclosed is a polymetallic supported catalyst component comprising an activated anhydrous MgCl2 solid support which has been treated with at least one treatment of at least two halogen-containing transition metal compounds, wherein one is a halogen-containing titanium metal compound and one is a halogen-containing non-titanium transition metal compound, optionally, in the presence of an electron donor and the processes for producing the component. A catalyst for the polymerization of at least one alpha-olefin of the formula CH2═CHR, where R is H or a C1-12 branched or straight chain alkyl or substituted or unsubstituted cycloalkyl, by reacting this supported catalyst component with an organometallic cocatalyst, optionally in the presence of an electron donor, and the polymerization of at least one alpha-olefin with the catalyst are also disclosed.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: August 13, 2002
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventor: Crystal A. Smith
  • Polymetallic catalysts and method of preparing same
    Patent number: 6054406
    Abstract: Disclosed is a polymetallic supported catalyst component comprising an activated anhydrous MgCl.sub.2 solid support which has been treated with at least one treatment of at least two halogen-containing transition metal compounds, wherein one is a halogen-containing titanium metal compound and one is a halogen-containing non-titanium transition metal compound, optionally, in the presence of an electron donor and the processes for producing the component. A catalyst for the polymerization of at least one alpha-olefin of the formula CH.sub.2 =CHR, where R is H or a C.sub.1-12 branched or straight chain alkyl or substituted or unsubstituted cycloalkyl, by reacting this supported catalyst component with an organometallic cocatalyst, optionally in the presence of an electron donor, and the polymerization of at least one alpha-olefin with the catalyst are also disclosed.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: April 25, 2000
    Assignee: Montell North America Inc.
    Inventor: Crystal A. Smith
  • Catalyst for the polymerization of alpha-olefins containing trifluoropropyl substituted silane compounds
    Patent number: 5102842
    Abstract: Disclosed are catalysts for the polymerization of alpha-olefins comprising the reaction product of:(A) an Al-alkyl compound;(B) a trifluoropropyl substituted silane compound;(C) a solid component comprising a titanium compound having at least a Ti-halogen bond and an electron donor compound both supported on an activated anhydrous magnesium dihalide, and the process of using said catalysts.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: April 7, 1992
    Assignee: Himont Incorporated
    Inventors: Crystal A. Smith, Constantine A. Stewart