Patents by Inventor Adriaan A. van der Huizen

Adriaan A. van der Huizen 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).

  • Catalyst system for high-cis polybutadiene
    Patent number: 6887956
    Abstract: A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaCoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2AlCl, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3Al, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: May 3, 2005
    Assignee: Dow Global Technologies Inc.
    Inventors: Adriaan A. van der Huizen, Jean-Marc Potlet, Alain Sabatier, Patrick Le Roy
  • Catalyst system for high-cis polybutadiene
    Publication number: 20040029722
    Abstract: A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaCoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2AlCl, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3Al, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.
    Type: Application
    Filed: April 11, 2003
    Publication date: February 12, 2004
    Inventors: Adriaan A. van der Huizen, Jean-Marc Potlet, Alain Sabatier, Patrick Le Roy
  • Polymer production
    Patent number: 5387649
    Abstract: Novel metallated polyolefins are produced by contacting a polyolefin having a vinylidene group in the terminal portion with organoalkali metal compound in the presence of alkali metal t-alkoxide or tertiary amine. The metallated polyolefin is used to initiate the polymerization of polymerizable monomers to produce block copolymers of at least two blocks, at least one of which is saturated polyolefin.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: February 7, 1995
    Assignee: Shell Oil Company
    Inventors: Eric J. M. DeBoer, Fred F. Hage, Adriaan A. Van Der Huizen, Carl L. Willis
  • Production of alkali metallated olefin polymers
    Patent number: 5364911
    Abstract: Novel metallated polyolefins are produced by contacting a polyolefin having a vinylidene group in the terminal portion with organoalkali metal compound in the presence of alkali metal t-alkoxide or tertiary amine. The metallated polyolefin is used to initiate the polymerization of polymerizable monomers to produce block copolymers of at least two blocks, at least one of which is saturated polyolefin.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: November 15, 1994
    Assignee: Shell Oil Company
    Inventors: Eric J. M. De Boer, Fred F. Hage, Adriaan A. Van Der Huizen, Carl L. Willis
  • Anionic polymerization catalyst compositions
    Patent number: 5064800
    Abstract: A highly active anionic polymerization catalyst prepares butadiene polymers having a high 1,4-trans-dienyl content, the catalyst containing an organolithium compound, a barium, strontium or calcium compound, and trialkylaluminum compounds having at least 13 carbon atoms per molecule.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: November 12, 1991
    Assignee: Shell Oil Company
    Inventor: Adriaan A. Van Der Huizen
  • Anionic polymerization catalyst compositions
    Patent number: 4996273
    Abstract: A highly active anionic polymerization catalyst prepares butadiene polymers having a high 1,4-trans-dienyl content, the catalyst containing an organolithium compound, a barium, strontium or calcium compound, and trialkylaluminum compounds having at least 13 carbon atoms per molecule.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: February 26, 1991
    Assignee: Shell Oil Company
    Inventor: Adriaan A. Van Der Huizen
  • Inorganocyclic compounds usable as medicaments and a process for their preparation
    Patent number: 4469687
    Abstract: The invention relates to new chemical compounds corresponding to the following formula ##STR1## in which R is a non-hydrolyzable radical and Az represents aziridinyl ##STR2## These compounds may be used as medicaments.
    Type: Grant
    Filed: September 9, 1981
    Date of Patent: September 4, 1984
    Assignee: Agence Nationale de Valorisation de la Recherche
    Inventors: Jean-Francois Labarre, Francois Sournies, Johan C. van de Grampel, Adriaan A. Van Der Huizen