Patents by Inventor Percy Hayden

Percy Hayden 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).

  • Production of olefine oxides
    Patent number: 5387751
    Abstract: Olefine oxides are produced by contacting an olefine with oxygen in the presence of a silver containing catalyst and a chlorine-containing reaction modifier; the performance of the catalyst is improved by contacting it with a nitrate or nitrite forming substance for example nitric oxide.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: February 7, 1995
    Assignee: Imperial Chemical Industries PLC
    Inventors: Percy Hayden, Richard W. Clayton, John R. Ramforth, Alan F. G. Cope
  • Production of ethylene oxide
    Patent number: 5384420
    Abstract: A gas stream from a reaction in which ethylene oxide is produced by reacting ethylene with oxygen which gas stream comprises oxides of nitrogen and steam the gas stream is cooled to condense water, condensed water is removed, and ethylene oxide is then recovered from the gas stream. A substantial amount of the oxides of nitrogen is removed from the gas stream during the condensation.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: January 24, 1995
    Assignee: Imperial Chemical Industries plc
    Inventors: James R. Jennings, Percy Hayden, Andrew J. Allchurch
  • Production of ethylene oxide
    Patent number: 5336791
    Abstract: A gas stream from a reaction in which ethylene oxide is produced by reacting ethylene with oxygen which gas stream comprises oxides of nitrogen and steam the gas stream is contacted with an aqueous alkaline quench solution and ethylene oxide is then recovered from the gas stream. A substantial amount of oxides of nitrogen is removed from the gas stream during the treatment with the quench solution.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: August 9, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventors: James R. Jennings, Percy Hayden
  • Production of ethylene oxide and catalysts therefor
    Patent number: 5099041
    Abstract: Catalysts of attractive activities for use in the oxidation of ethylene to ethylene oxide comprise silver supported on a porous heat resisting support, a group VI A transition metal, potassium, rubidium and/or cesium and sulphur.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: March 24, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Percy Hayden, Harry Pinnegar
  • Catalysts for the production of ethylene oxide
    Patent number: 5011807
    Abstract: Catalysts of attractive activities for use in the oxidation of ethylene to ethylene oxide comprise silver supported on a porous heat resisting support, a group VI A transition metal, potassium, rubidium and/or cesium and sulphur.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: April 30, 1991
    Assignee: Imperial Chemical Industries plc
    Inventors: Percy Hayden, Harry Pinnegar
  • Process for improving the performance of a catalyst for the production of alkylene oxides
    Patent number: 4837194
    Abstract: The performance of a catalyst for the oxidation of alkenes to alkylene oxides which comprises silver on alpha alumina is improved by introducing an alkali metal selected from lithium, sodium, rubidium and/or potassium to the catalyst in a ratio of one part chemically absorbed to at most three parts physically absorbed by impregnation with a solution of an alkali metal compound in a solvent which has dielectric constant of at most 8.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: June 6, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventor: Percy Hayden
  • Production of ethylene oxide
    Patent number: 4822900
    Abstract: Ethylene oxide is produced by contacting ethylene and oxygen in the presence of a chlorine containing reaction modifier with a silver containing catalyst, nitropropane being also present. The nitropropane raises the selectivity of the process.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: April 18, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventor: Percy Hayden
  • Process for the preparation of a catalyst for the production of alkylene oxides
    Patent number: 4810689
    Abstract: Silver containing catalysts for the oxidation of alkenes to alkylene oxides are produced by impregnating a support with a solution of a silver compound and an organic compound and decomposing the silver compound to silver in the presence of an alkali metal compound. Organic residues are then removed by washing and fresh alkali metal introduced.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: March 7, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventor: Percy Hayden
  • Process for the production of unsaturated mono- or saturated dialdehydes and acetals thereof
    Patent number: 4507508
    Abstract: Unsaturated mono- and saturated di-aldehydes and acetals are produced by reacting a conjugated diolefine with carbon monoxide and hydrogen in the presence of an alcohol and a catalyst comprising rhodium, a tert phosphine or phosphite and more than one equivalent of acid per gram atom of rhodium.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: March 26, 1985
    Assignee: Imperial Chemical Industries PLC
    Inventors: Percy Hayden, Alec Mee, Donald Wright
  • Production of alkylene oxides and catalysts thereof
    Patent number: 4226782
    Abstract: Catalysts for the oxidation of alkenes to alkylene oxides comprise silver on supports having a surface area of 0.05 to 10 m.sup.2 /g, and at least 16 .mu.g equivalents per square meter of potassium together with rubidium and/or cesium.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: October 7, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: Percy Hayden, Richard W. Clayton, Alan F. G. Cope
  • Catalysts for the production of alkylene oxides
    Patent number: 4168247
    Abstract: Catalysts for the oxidation of alkenes to alkylene oxides comprise silver on a support of 0.05 to 10m.sup.2 /g surface area, a promoting amount of sodium and also potassium, rubidium and/or cesium.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: September 18, 1979
    Assignee: Imperial Chemical Industries Limited
    Inventors: Percy Hayden, Richard W. Clayton
  • Restoring selectivity of alkali metal promoted silver catalysts and production of olefine oxides
    Patent number: 4094889
    Abstract: The selectivity of unstable alkali metal promoted silver containing olefin oxide production catalysts is restored by wetting them.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: June 13, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Percy Hayden, Richard William Clayton
  • Promoted silver catalyst for producing alkylene oxides
    Patent number: 4007135
    Abstract: Alkylene oxides are produced by oxidizing olefines with oxygen in the presence of promoted silver containing catalysts.
    Type: Grant
    Filed: November 22, 1974
    Date of Patent: February 8, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: Percy Hayden, Roy John Sampson, Christopher Buxton Spencer, Harry Pinnegar