Patents by Inventor Joanne R. Whittle

Joanne R. Whittle 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).

  • Process for preparing overbased calcium sulfonates
    Patent number: 4879053
    Abstract: In the preparation of an overbased calcium sulfonate from a chloride free calcium sulfonate and calcium oxide, it has been found that 0.4 to 0.9 wt % calcium chloride improves the overbasing reaction rate.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: November 7, 1989
    Assignee: Texaco Inc.
    Inventors: Leonard A. Matthews, William J. Powers, III, Henry M. Przybyla, Joanne R. Whittle, Jerry C. Perciful
  • Method of preparing overbased calcium sulfonates
    Patent number: 4604219
    Abstract: In an overbased sulfonate process calcium hydroxide is formed in situ by the continuous and uniform addition of water to calcium oxide over the entire hydration and carbonation time rather than incrementally. It has been found that the water rate and amount are critical.A 300 TBN product is formed with an H.sub.2 O/CaO molar ratio of 0.4 and a 3 hour hydration time. A 400 TBN product is formed with an H.sub.2 O/CaO molar ratio of 0.8 and 3 hour hydration time.Improved filterability and raw material utilization as well as reduced by-product solids content is achieved.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: August 5, 1986
    Inventor: Joanne R. Whittle
  • Method of preparing overbased calcium sulfonates
    Patent number: 4427559
    Abstract: In the preparation of overbased calcium sulfonates the use of a mixture of calcium oxide and calcium hydroxide wherein the mole ratio CaO/CaOH.sub.2 +Ca(OH).sub.2 ranges from 0.2 to 1.0 improves lime and sulfonate utilization and reduces the amount of solid waste material which must be filtered from the product.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: January 24, 1984
    Assignee: Texaco Inc.
    Inventor: Joanne R. Whittle
  • Preparation of vicinal-chloraminoalkanes from alpha-olefins chloramines and aluminum halide catalysts
    Patent number: 4089903
    Abstract: This invention concerns a process for preparing beta-chloraminoalkanes from alpha olefins, chloramines and aluminum halide catalysts. The products are useful as lube oil additives and for making aziridines.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: May 16, 1978
    Assignee: Texaco Inc.
    Inventors: Joanne R. Whittle, Orville W. Rigdon