Patents Represented by Attorney, Agent or Law Firm W. B. Haymond
  • Method of converting olefins into mixtures of secondary esters, products and uses thereof
    Patent number: 6191076
    Abstract: An esterification process and the products resulting from it which achieves a mixture of secondary esters which are effectively used with invert drilling muds, the process involving the addition of one or more C1-C5 carboxylic acids and one or more C3-C22 olefins in the presence of an acid catalyst.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: February 20, 2001
    Assignee: Chevron Phillips Chemical Company LC
    Inventor: Jeffery C. Gee
  • Peroxide modified hexene gas phase copolymer linear low density polyethylene in geomembrane applications
    Patent number: 6187423
    Abstract: A peroxide treated LLPDE material that can used as a geomembrane liner in land areas storing toxic waste, municipal landfills, leachate or slurry ponds, and other such land containment applications as well as applications in which a strong, non-biodegradable material which is impermeable to air and moisture is needed.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: February 13, 2001
    Assignee: Chevron Phillips Chemical Company LC
    Inventors: Pamela L. Maeger, Terry R. King
  • Injection method for feeding particulate to a process vessel
    Patent number: 6139226
    Abstract: An injection method for feeding a particulate material to a process vessel, including a valve with at least one cavity adapted for receipt of a predetermined volume of particulate and a sweep stream source for providing a sweep stream having flow in a direction generally toward the valve to remove substantially all of the particulate from the cavity of the valve.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: October 31, 2000
    Assignee: Chevon Chemical Company LLC
    Inventors: Kevin W. Lawson, Gary K. Scott, Wendell H. Snelson
  • Method for producing 2,6-DMN from mixed dimethylnaphthalenes by crystallization, adsorption and isomerization
    Patent number: 6057487
    Abstract: A method is disclosed to produce 2,6-dimethylnaphthalene (2,6-DMN), used for the production of polyethylene naphthalate, at high purity and high yield from a mixture of dimethylnaphthalene isomers without limitation to the specific isomers present in the feed by a series of fractionation, crystallization and adsorption steps.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: May 2, 2000
    Assignee: Chevron Chemical Company
    Inventors: Curtis L. Munson, Patrick C. Bigot, Zunqing Alice He
  • Method of isomerizing alpha-olefins to linear internal olefins with minimal skeletal isomerization using nickel supported on silica/alumina catalysts
    Patent number: 6054629
    Abstract: The present invention relates to a method of using nickel alumina catalyst to isomerize linear alpha olefins substantially completely to linear internal olefins with no significant increase in branch internal olefin content.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: April 25, 2000
    Assignee: Chevron Chemical Company LLC
    Inventors: Eduardo J. Baralt, Amy C. King, Carol E. King