Patents by Inventor Kirsten Everald Clode

Kirsten Everald Clode 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).

  • Carbonylation of methanol to acetic acid with removal of impurities from the product
    Patent number: 6326515
    Abstract: A process for removing higher organic iodides, including hexyl iodide, from an acetic acid product obtained by carbonylating methanol and/or a reactive derivative thereof in the presence of a finite concentration of water, Group VIII noble metal catalyst, methyl iodide as co-catalyst, and optionally a catalyst promoter, which process includes the step of subjecting an aqueous composition comprising acetic acid and at least one higher organic iodide to distillation in a column, or section of a column, separating water overhead from a dry acetic acid fraction, wherein the water concentration on the feed tray of the column, or section of the column, is greater than 8% by weight and the water concentration in the head of the column, and/or section of the column, is greater than 70% by weight.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: December 4, 2001
    Assignee: BP Chemicals Limited
    Inventors: Kirsten Everald Clode, Derrick John Watson
  • Process for preparing a carboxylic acid
    Patent number: 5990347
    Abstract: A process for preparing a carboxylic acid having n+1 carbon atoms by contacting carbon monoxide with a liquid reaction composition comprising an alcohol of n carbon atoms or an ester derivative thereof; an iridium carbonylation catalyst and a hydrocarbyl halide promoter wherein in the liquid reaction composition the concentration of water is about 2 to 8% by weight, the concentration of ester derivative of said alcohol and product acid is from 1 to 60% by weight (preferably 3-35% by weight), and the concentration of hydrocarbyl halide is from 2 to 10% weight.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: November 23, 1999
    Assignee: BP Chemicals Limited
    Inventor: Kirsten Everald Clode
  • Process for the recovery of a carbonylation product
    Patent number: 5874610
    Abstract: A process for the recovery of a carbonylation product from a liquid reaction composition of an iridium-catalysed carbonylation reaction of a carbonylatable reactant comprises subjecting the composition to a vaporization with or without the addition of heat to produce a vapor-fraction and a liquid fraction, the vapor fraction comprises carbonylation product and the liquid fraction has a water concentration of at least 0.5% by weight to stabilize the iridium catalyst.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: February 23, 1999
    Assignee: BP Chemicals Limited
    Inventors: Kirsten Everald Clode, Derrick John Watson, Carl Jozef Elsa Vercauteren
  • Process for the recovery of a carbonylation product
    Patent number: 5750007
    Abstract: A process for the recovery of a carbonylation product from a liquid reaction composition of an iridium-catalysed carbonylation reaction of a carbonylatable reactant includes subjecting the composition to a vaporization with or without the addition of heat to produce a vapor-fraction and a liquid fraction, the vapor fraction includes carbonylation product and the liquid fraction has a water concentration of at least 0.5% by weight to stabilise the iridium catalyst.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: May 12, 1998
    Assignee: BP Chemicals Limited
    Inventors: Kirsten Everald Clode, Derrick John Watson, Carl Josef Elsa Vercauteren