Patents by Inventor Gerald L. Nield

Gerald L. Nield 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).

  • Alkoxylation of cresylic acids
    Patent number: 4376868
    Abstract: Cresylic acid ethoxylation is catalyzed by basic compounds and salts of alkaline earth metals. Ethoxylates from such reactions have narrow ethylene oxide distributions, lower pour points and lower by-products as compared to alkali base catalyzed ethoxylation. Suitable catalysts include strontium-containing and barium-containing materials. The catalyst also includes co-catalyst combinations using these materials with one or more promoters including polyols, amines, amides, carboxylic acids and phenols. The co-catalyst combinations can be preformed prior to introduction into the reaction mixture.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: March 15, 1983
    Assignee: Conoco Inc.
    Inventors: Gerald L. Nield, Kang Yang, Paul H. Washecheck
  • Catalyst removal from alcohol alkoxylates
    Patent number: 4329515
    Abstract: Basic compounds of Ba and Sr used in the production of peaked alcohol alkoxylates can be removed from the products by precipitating with some polybasic organic acids. Examples of effective acids include glutaric, diglycolic, adipic, and azelaic acids.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: May 11, 1982
    Assignee: Conoco Inc.
    Inventors: Kang Yang, Gerald L. Nield, Paul H. Washecheck
  • Strontium catalyzed alkoxylations
    Patent number: 4306093
    Abstract: Strontium-containing materials catalyze the alkoxylation of alcohols. Strontium produced alkoxylates have sharper alkoxylate distributions, lower free alcohols, lower pour points, and better detergency than alkoxylates obtained from alkali base catalysis.
    Type: Grant
    Filed: January 24, 1980
    Date of Patent: December 15, 1981
    Assignee: Conoco Inc.
    Inventors: Kang Yang, Gerald L. Nield, Paul H. Washecheck
  • Inorganic catalyst for alkoxylation of alcohols
    Patent number: 4302613
    Abstract: Strontium and barium-based catalyzed alkoxylation of alcohols of all classes is carried out more rapidly and produces a more peaked reaction product when carried out in the presence of co-catalysts such as calcium oxide, calcium carbide, calcium hydroxide, magnesium metal, magnesium hydroxides, zinc oxide, and aluminum metal.
    Type: Grant
    Filed: August 22, 1980
    Date of Patent: November 24, 1981
    Assignee: Conoco Inc.
    Inventors: Kang Yang, Gerald L. Nield, Paul H. Washecheck
  • Ethoxylation with strontium bases
    Patent number: 4223164
    Abstract: Basic compounds of strontium catalyzed the ethoxylation of alcohols in the presence of phenol or alkylphenol co-catalyst. Strontium-produced ethoxylates have sharper ethylene oxide distributions, lower free alcohol, lower pour points, and better detergency than the ethoxylates obtained from alkali base catalysis.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: September 16, 1980
    Assignee: Conoco, Inc.
    Inventors: Kang Yang, Gerald L. Nield, Paul H. Washecheck
  • Barium oxide/cresylic acid catalyzed ethoxylation
    Patent number: 4210764
    Abstract: Cresylic acid (phenol or alkylated phenols) is used to promote barium oxide or hydroxide which is used as an ethoxylation catalyst for the reaction of ethylene oxide and alkanols of all classes. The reaction is carried out at temperatures of from about 150.degree. to about 200.degree. C. to yield the ethoxylated product. The product obtained has a very narrow high adduct distribution with low levels of by-products and unreacted free alcohols. Calcium and magnesium oxides show negligible catalytic effect.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: July 1, 1980
    Assignee: Conoco, Inc.
    Inventors: Kang Yang, Gerald L. Nield, Paul H. Washecheck