Patents by Inventor Eit Drent

Eit Drent 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).

  • Polymerization of CO/olefin with P bidentate ligand
    Patent number: 5247064
    Abstract: Linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon of relatively high bulk density is produced by contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a reaction diluent and a catalyst composition formed from a compound of palladium, at least 5 mols per mol of palladium of strong, non-hydrohalogenic acid and a bidentate ligand of phosphorus wherein each monovalent phosphorus substituent is characterized by a carbon atom having no more than one hydrogen substituent, which carbon atom is connected to the phosphorus by a methylene group.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: September 21, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Vapor phase polymerization of co/olefin with palladium compound, Lewis acid and bidentate ligand
    Patent number: 5245123
    Abstract: Novel catalyst compositions, useful in the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, comprise a compound of palladium, a Lewis acid of the formula MF.sub.n wherein n is 3 or 5 and M is a Group III or V element which forms a binary fluoride, and a bidentate ligand of phosphorus, nitrogen or sulfur.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: September 14, 1993
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Johannes J. Keijsper
  • CO/olefin polymerization with carboxylic acid or phenol
    Patent number: 5229475
    Abstract: A novel catalyst composition containing a palladium salt, an anion of a non-hydrohalogenic acid with a pk.sub.a of less than 2, a phosphorus bidentate ligand and an acid with a pk.sub.a of at least 4 but less than 6. The catalyst composition effectively polymerizes carbon monoxide and at least one ethylenically unsaturated hydrocarbon to produce linear, alternating polymers.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: July 20, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Co-dimerization of vinyl aromatics with .alpha.-monoolefins
    Patent number: 5227561
    Abstract: The invention concerns a process for the co-dimerization of a vinyl aromatic monomer (e.g. styrene) with an .alpha.-monoolefin monomer (e.g. ethylene, propylene or 1-butylene), using a catalyst composition comprising palladium, an anion of a strong acid and an aliphatic diphosphine.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: July 13, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Polyketone polymer preparation in the absence of hydrogen
    Patent number: 5227465
    Abstract: A process for preparing low molecular weight polyketone polymers is described, wherein carbon monoxide is combined with ethene and/or propene and optionally in addition to one or more other .alpha.-olefins, by contacting the monomers in the absence of hydrogen with a catalyst containing a Group VIII metal and a tetra(sec-alkyl)bisphosphine ligand.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: July 13, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Polyketone polymer preparation with tetra alkyl bis phosphine ligand and hydrogen
    Patent number: 5225523
    Abstract: A process for the preparation of low molecular weight polyketone polymers, wherein polymers of carbon monoxide with ethene and/or propene and optionally in addition with one or more other .alpha.-olefins are prepared by contacting the monomers in the presence of hydrogen with a catalyst containing a Group VIII metal and a tetraalkylbisphosphine ligand. The process may also be conducted in the presence of a liquid .alpha.-olefin diluent.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: July 6, 1993
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Johannes J. Keijsper
  • Oil compositions
    Patent number: 5215647
    Abstract: Hydrocarbon oil compositions of improved low temperature properties comprise intimate mixtures of hydrocarbon oil and a linear alternating polymer of carbon monoxide and at least one straight-chain .alpha.-olefin of relatively high carbon number.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: June 1, 1993
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Marinus J. Reynhout, Henricus P. M. Tomassen
  • Polymerization of co/olefin with catalyst comprising palladium compound, Lewis acid and Bronsted acid
    Patent number: 5216120
    Abstract: An improved gas-phase process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon employs a catalyst composition formed from a compound of palladium, an acidic component comprising a mixture of Lewis acid and Bronsted acid and a bidentate ligand of phosphorus, nitrogen or sulfur.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: June 1, 1993
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Johannes J. Keijsper
  • Process for the preparation of alcohols
    Patent number: 5214220
    Abstract: The invention relates to a process for the preparation of an alcohol by hydrogenation of an aldehyde at elevated temperature and superatmospheric pressure in the presence of a homogeneous catalytic system comprising a source of a Group VIII metal compound and a bidentate phosphine.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: May 25, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Process for the preparation of alkanedioic acid derivatives
    Patent number: 5210280
    Abstract: A process for the preparation of alkanedioic acid derivatives comprising reacting an alkenoic acid derivative with carbon monoxide and a nucleophilic compound having a mobile hydrogen atom in the presence of a catalyst system comprising a source of a Group VIII metal, a source of a bidentate diphosphine liquid, a source of an anion and a source of a quinone promoter.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: May 11, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Polymerization of CO/non-conjugated diolefin
    Patent number: 5210176
    Abstract: Novel polymers containing alternating units of carbon monoxide and units derived from non-conjugated diolefinic hydrocarbon are produced by contacting the carbon monoxide and non-conjugated diolefinic hydrocarbon under polymerization conditions in the presence of a catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus having only aliphatic monovalent phosphorus substituents.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: May 11, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Polymerization of CO/olefin with tetra ethyl diphosphine
    Patent number: 5210177
    Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a reaction diluent and a novel catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid and a bis(diethylphosphino)alkane.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: May 11, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Polymerization of carbon monoxide/non conjugated alkenyl benzene
    Patent number: 5206342
    Abstract: Linear alternating polymers of carbon monoxide, non-conjugated alkenylbenzene compound and optionally ethylene are produced by contacting the monomeric reactants under polymerization conditions in the presence of an inert reaction diluent and a catalytic quantity of a catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid having a pKa less than 2 and a bis(dialkylphosphino)alkane. The polymer products are thermoplastics and have utility as engineering thermoplastics.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: April 27, 1993
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Eric Kragtwijk
  • Carbonylation catalyst system
    Patent number: 5179225
    Abstract: A carbonylation catalyst system, which comprises:a) a source of a Group VIII metal;b) a source of a phosphine having an aromatic substituent containing an imino nitrogen atom;c) a source of protons; andd) a source of an alkylsulfonate anion, and the use of such a catalyst system in the carbonylation of an acetylenically or olefinically unsaturated compound.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: January 12, 1993
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Petrus H. M. Budzelaar, Willem W. Jager, Johan Stapersma
  • Process for the preparation of alpha,beta-olefinically unsaturated compounds
    Patent number: 5177253
    Abstract: A process for the preparation of an alpha,beta-olefinically unsaturated compound, which comprises reacting an acetylenically unsaturated compound with monoxide and a hydroxyl-containing compound in the presence of a catalyst system comprising:(a) a source of a Group VIII metal cation,(b) a source of an organic diphosphine having at least one of the phosphorus atoms substituted by an aromatic substituent containing an imino nitrogen atom, and(c) a source of an anion.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: January 5, 1993
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Petrus H. M. Budzelaar, Willem W. Jager
  • Polymerization of co/norbornene compound with molar ratio of n ligand to anion greater than 4
    Patent number: 5177184
    Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and norbornene-type compounds wherein substantially all of the moieties originating from the carbon monoxide are in a spiroketal structure which comprises contacting the carbon monoxide and norbornene compound in a liquid reaction diluent at a temperature below 55.degree. C. in the presence of a catalyst composition formed from a compound of palladium, the anion of a non-hydrohalogenic acid having a pKa below 2, a bidentate ligand of nitrogen and an organic oxidant, the molar ratio of the bidentate ligand to the anion being at least 4.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: January 5, 1993
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Polymerization of co/olefin with diphosphine containing heterocyclic/alkyl substituents
    Patent number: 5175244
    Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon employs a novel catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid and a novel bidentate phosphine ligand wherein each phosphorus has an aliphatic group as one monovalent substituent and as another monovalent substituent a heteroaromatic group connected to the phosphorus by a ring carbon atom. The polymers are useful as thermoplastics.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: December 29, 1992
    Assignee: Shell Oil Company
    Inventors: Petrus H. M. Budzelaar, Eit Drent
  • Carbonylation catalyst system
    Patent number: 5166116
    Abstract: A carbonylation catalyst system, which comprises:a) a source of a Group VIII metal;b) a source of a phosphine having an aromatic substituent containing an imino nitrogen atom;c) a source of protons; andd) a source of an alkylsulfonate anion, and the use of such a catalyst system in the carbonylation of an acetylenically or olefinically unsaturated compound.
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: November 24, 1992
    Assignee: Shell Oil Company
    Inventors: Eit Drent, Petrus H. M. Budzelaar, Willem W. Jager, Johan Stapersma
  • Carbonylation catalyst system
    Patent number: 5166411
    Abstract: A catalyst system, which comprises:a) a source of a Group VIII metal;b) a phosphine having an aromatic substituent which contains an imino nitrogen atom;c) a source of protons; andd) a tertiary amine.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: November 24, 1992
    Assignee: Shell Oil Company
    Inventor: Eit Drent
  • Polymerization of co/olefin/functionally substituted olefin with tetra alkyl diphosphine
    Patent number: 5162493
    Abstract: An improved process for the production of linear alternating polymers of carbon monoxide, functionally-substituted ethylenically unsaturated compound wherein at least one carbon atom separates the functional substitution and the ethylenic unsaturation and, optionally, an ethylenically unsubstituted hydrocarbon, which comprises contacting the carbon monoxide and unsaturated compound under polymerization conditions in the presence of a reaction diluent and a catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid and a tetraalkyl diphosphine liqand.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: November 10, 1992
    Assignee: Shell Oil Company
    Inventor: Eit Drent