Patents Represented by Attorney J. J. Mahon
  • Patent number: 5833721
    Abstract: An antifoam additive for hydrocarbon oils and in particular fuel oils comprises the combination of an antifoam agent and an ashless dispersant.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: November 10, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventors: Richard Joseph Hart, Rinaldo Caprotti
  • Patent number: 5478367
    Abstract: The addition to diesel or jet fuel of macrocyclic polyamines, especially those derived from PIBSA, or hydrocarbyl polyamines reduces particle emission, especially in association with organic nitrate cetane improvers.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: December 26, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael D. Sexton, Anthony K. Smith, Antonio Gutierrez, Stanley J. Brois
  • Patent number: 5456730
    Abstract: There are disclosed middle distillate fuel oil compositions containing an additive being a copolymer of Mn 200-50,000 having a polymethylene backbone which may be O or N substituted and having nitrate, peroxide, nitrite or nitrosocarbonate side chains.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: October 10, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard J. Hart, Tuncel Ibrahim, Graham Jackson
  • Patent number: 5434318
    Abstract: Noble metal or other preformer catalysts used to convert cobalt salts to hydrido cobalt carbonyl for use in the oxonation of olefins are reactivated or regenerated by treatment with a mixture of an aqueous organic acid solution and an alcohol at a temperature of about 120.degree. C. to 170.degree. C. and a pressure of about 13.78 MPa to 31.00 MPa for about 2 to 50 hours.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: July 18, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Ronald R. Hill, Patricia B. Roussel
  • Patent number: 5430108
    Abstract: Plasticized PVC compositions are disclosed which are heat resistant and which exhibit low smoke generation where the plasticizer is a pentaerythritol ester of mixed C.sub.5, C.sub.7 and C.sub.9 alkanoic acids.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: July 4, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard H. Schlosberg, John R. Hooton, Leonard G. Krauskopf, Francisco M. Benitez, James D. Gerald
  • Patent number: 5401891
    Abstract: A process for purifying crude dicyclopentadiene which comprises the steps of: cracking the crude dicyclopentadiene to form a monomeric-containing effluent which comprises at least one monomer selected from the group consisting of: C.sub.4 acyclic dienes, C.sub.5 acyclic dienes, cyclopentadiene and methylcyclopentadiene; separating the monomeric-containing effluent into a cyclopentadiene-enriched stream and a cyclopentadiene-poor stream; dimerizing the cyclopentadiene-enriched stream to form a dimerizer effluent; contacting a membrane separator under pervaporation conditions with the dimerizer effluent wherein the C.sub.4 acyclic dienes, C.sub.5 acyclic dienes and cyclopentadiene permeate through the membrane separator and wherein a dicyclopentadiene product having a purity of at least about 98% is retained as retentate.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: March 28, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Michael J. Keenan, David W. Sharp, Robert C. Schucker
  • Patent number: 5397633
    Abstract: This invention is to a process for sizing spun cotton yarns, especially dyed spun cotton yarns. The process entails treating a cotton-containing yarn with a solution polyacrylamide polymer. The use of this polymer system with a spun cotton yarn has been discovered both to overcome the previous excessive brittleness which had precluded use of polyacrylamide polymers as a size and to produce a fabric which can be overdyed without prior removal of the size.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: March 14, 1995
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Michael L. McAbee, Donald H. Shomake
  • Patent number: 5395979
    Abstract: A catalyst for use in hydroformylation of olefins which comprises a Group VIII noble metal complexed with a phosphine ligand having at least one alkyl or aryl group bonded thereto, such as tris-4-propylphenyl phosphines and tris-4-octylphenyl phosphines. These and other triphenylphosphine catalysts can be separated from a crude reaction product of a noble metal-catalyzed hydroformylation reaction by contacting the crude reaction product with a dense polymeric, nonpolar membrane, preferably nonpolar polyolefin membranes.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: March 7, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Harry W. Deckman, Edward Kantner, Joel R. Livingston, Jr., Michael G. Matturro, Edmund J. Mozeleski
  • Patent number: 5382715
    Abstract: The hydrogenation steps and hydrofinishing steps of the cobalt catalyst oxo process for preparation of the alcohols by the hydroformylation of olefin are carried out using a nickel-molybdenum catalyst on an alumina or silica alumina support which has a phosphorous content of O.1 wt. % to 1.0 wt. % phosphorus.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: January 17, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jose M. Vargas, Kenneth L. Riley
  • Patent number: 5382701
    Abstract: A method for producing a potassium paradiphenyl phosphino sulfonate ligand which comprises reacting potassium diphenyl phosphide with a lithium salt of para-chloro benzenesulfonic acid in the presence of tetrahydrofuran at elevated temperatures.
    Type: Grant
    Filed: November 18, 1993
    Date of Patent: January 17, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Elena N. Suciu, Joel R. Livingston, Jr., Edmund J. Mozeleski
  • Patent number: 5354908
    Abstract: A method for absorbing cobalt within an olefinic feedstock which comprises the steps of introducing a volatile cobalt compound and an olefinic feedstock into an absorber to form a cobalt-containing olefin mixture, withdrawing the cobalt-containing olefin mixture from the absorber, introducing at least a portion of the cobalt-containing olefin mixture into a reactor, wherein a substantial portion of the volatile cobalt compound entrained within the cobalt-containing olefin mixture decomposes to its non-volatile cobalt compound species, and recycling this mixture back to the absorber so that it can be used to further absorb volatile cobalt such that a more concentrated cobalt-containing olefin solution is formed.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: October 11, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Kirk C. Nadler
  • Patent number: 5334671
    Abstract: The present invention is directed towards a mixture of phenol terminated diesters and an amino crosslinking agent. The diesters are characterized by a structure consisting of ##STR1## wherein R is an aliphatic divalent hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, provided however that R contains at least about 8 carbon atoms when n is 0 and p is 0, R.sub.1 is an aliphatic or cycloaliphatic hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, R.sub.2 is a aliphatic, aromatic or a mixture of aliphatic and aromatic hydrocarbon radicals having from 2 to 40 carbon atoms, A is divalent aromatic radical selected from the group consisting of phenylene, naphthylene or bis phenylene, p is 0 or 1, n is 0 or an integer ranging from 1 to about 40, provided however, that p is 0 when n is 0 and p is 1 when n is an integer and ##STR2## wherein q is an integer ranging from 1 to about 40, n is 0 or an integer ranging from 1 to about 40 and A, R.sub.1 and R.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: August 2, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Albert I. Yezrielev, William E. Wellman, Ralph M. Kowalik, George A. Knudsen, Michael G. Romanelli
  • Patent number: 5326831
    Abstract: The present invention is directed towards a process for preparing non-liquid crystalline phenol-terminated diester compositions characterized by the structure of formula 1: ##STR1## wherein R is an aliphatic divalent hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, provided however that R contains at least about 8 carbon atoms when n is 0 and p is 0, R.sub.1 is an aliphatic or cycloaliphatic hydrocarbon radical containing 2 to 40 carbon atoms or a mixture of such radicals, R.sub.2 is an aliphatic, aromatic or a mixture of aliphatic and aromatic hydrocarbon radicals having from 2 to 40 carbon atoms, A is divalent aromatic radical selected from the group consisting of phenylene, naphthylene or his phenylene, p is 0 or 1, n is 0 or an integer ranging from 1 to about 40, provided however, that p is 0 when n is 0 and p is 1 when n is an integer.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: July 5, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Albert I. Yezrielev, William E. Wellman, Ralph M. Kowalik, George A. Knudsen, Michael G. Romanelli
  • Patent number: 5324420
    Abstract: Treatment of sulphur bearing hydrocarbons, especially olefin feedstocks to the oxo process, with a nickel-containing catalyst, especially spent hydrogenation catalyst, which may be amine treated.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: June 28, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Nicolaas A. De Munck, Arie Van Vliet
  • Patent number: 5306848
    Abstract: The hydrogenation steps and hydrofinishing steps of the cobalt catalyst oxo process for the preparation of alcohols by the hydroformylation of olefin are carried out using a trimetallic catalyst composed of metal oxides, particularly nickel oxide, molybdenum oxide and cobalt oxide supported on alumina or an alumina-silica in sulfided and non-sulfided form.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: April 26, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Jose M. Vargas
  • Patent number: 5298669
    Abstract: A method for separating a noble metal catalyst from a crude reaction product of a noble metal-catalyzed hydroformylation reaction which comprises: (a) contacting the crude reaction product under perstraction conditions with a membrane capable of allowing a substantial portion of unreacted olefin feed and hydroformylation reaction product to pass therethrough as permeate while retaining a substantial portion of the catalyst as retentate; (b) removing the permeate by sweeping it away from the membrane by means of a sweep stream which is the same as the olefin feed used in the hydroformylation reaction; and (c) retaining the catalyst as retentate.
    Type: Grant
    Filed: March 23, 1993
    Date of Patent: March 29, 1994
    Assignee: Exxon Chemical Patent Inc.
    Inventors: Francis J. Healy, Joel R. Livingston, Edmund J. Mozeleski, John G. Stevens
  • Patent number: 5288818
    Abstract: A method for separating a water soluble Group VIII noble metal catalyst from the crude reaction product of a noble metal-catalyzed hydroformylation reaction run in aqueous solution, in an aqueous emulsion or as an aqueous suspension, the crude reaction product including an aqueous phase containing a water soluble Group VIII noble metal-ligand complex catalyst, and an organic phase containing unreacted olefin feed and an organic hydroformylation reaction product, which comprises: (a) contacting the crude reaction product with a hydrophobic membrane capable of allowing a substantial portion of the unreacted olefin feed and the organic hydroformylation reaction product to pass therethrough while retaining a substantial portion of the water soluble Group VIII noble metal-ligand complex catalyst; (b) removing unreacted olefin feed and organic hydroformylation reaction product which passes through the hydrophobic membrane as permeate; and (c) retaining the water soluble Group VIII noble metal-ligand complex catalys
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: February 22, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Joel R. Livingston, Jr., Edmund J. Mozeleski, Guido Sartori
  • Patent number: 5198554
    Abstract: A novel compound 5-(2,4-dioxotetrahydro-3-furanylmethyl)norbornane-2,3-dicarboxylic acid anhydride has been provided. The compound is prepared by hydrogenating 5-(2,4-dioxotetrahydro-3-furanylmethyl)-5-norbornene-2,3-di-carboxylic acid anhydride. The compound may be used as a hardening agent for epoxy resins, a raw material of producing polyimides, polyamides and polyesters, and a raw material for a plasticizer for vinyl chloride polymers.
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: March 30, 1993
    Assignee: Tonen Corporation
    Inventors: Hiroyuki Inagaki, Hiroshi Furukawa, Takayoshi Kimura, Hiroshi Ueno
  • Patent number: 5091599
    Abstract: Cobalt is recovered from the oil/water mixed reaction product of an oxonation reaction by converting the cobalt in the oil/water product to carbonyls and absorption of the carbonyls in the residue obtained from the upgrading of the heavy fraction of a hydroformylation reaction.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: February 25, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Nicolaas A. De Munck, Mattheus D. Olijve
  • Patent number: 5071572
    Abstract: In the the oxo process for alcohol production the heavy component left after enriching and recycling is itself recycled to oxonation to give yield improvement.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: December 10, 1991
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Nicolaas A. De Munck