Patents Assigned to Exxon Research & Engineering
  • Fullerene-grafted polymers and processes of making
    Patent number: 5292813
    Abstract: This invention relates to novel compositions of matter, fullerene graft amine-containing polymers, and the process of making them. The graft is made by reacting a fullerene with a primary or secondary amine-containing polymer, preferably a hydrocarbon containing polymer in effective amounts, typically from about 10:1 to about 1:10 mole ratio of reactive amine in polymer to fullerene for a time and under conditions effective to produce the compositions. Suitable starting polymers are those containing primary or secondary amino groups, e.g., EPDM amine, PIB-amine, PIBSA-PAM, and Mannich based polymers. The preferred polymers are oil soluble, as the novel compositions of that type may be used as viscosity modifiers and lube additives. The crosslinked compositions may be used in essentially any application as the original polymer, but in which an increase in tensile strength would be desired.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: March 8, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Abhimanyu O. Patil, George W. Schriver, Robert D. Lundberg
  • Activation of hydrocarbon synthesis catalyst
    Patent number: 5292705
    Abstract: A fresh, reduced hydrocarbon synthesis catalyst is activated by contact with hydrogen at elevated temperatures and pressures and in the presence of liquid hydrocarbons, preferably, sufficient to immerse the catalyst therein.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: March 8, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: Willard N. Mitchell
  • Zeolite composition for use in olefinic separations
    Patent number: 5292990
    Abstract: Basically, the present invention is predicated on the discovery that zeolites that have a high silica to alumina ratio, e.g., a ratio of 20 and above, pore diameters of greater than about 5.0.ANG., and which have substantially no active acid sites, i.e., zeolites which are non-reactive toward olefin isomerization and oligomerization, are especially useful in substantially separating linear olefins and paraffins from hydrocarbon mixtures containing at least linear and branched aliphatic hydrocarbons and optionally containing aromatic and other hydrocarbons.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: March 8, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Edward Kantner, David W. Savage, Richard J. Bellows
  • Lubricant composition containing complexes of alkoxylated amine, trithiocyanuric acid, and adenine
    Patent number: 5290460
    Abstract: A composition of matter useful in lubricating oil for reducing friction in an internal combustion engine, said complex comprising the reaction product of alkoxylated amine, trithiocyanuric acid and adenine and having the formula: ##STR1## where R is a hydrocarbyl group of 2 to 22 carbon atoms, R.sup.1 is hydrogen or a hydrocarbyl group of 1 to 20 carbon atoms, x and y are each independently integers of from 1 to 15 with the proviso that the sum of x+y is from 2 to 20, and a, b and c are independent numbers from 1.0 to 3.0 wherein the ratios between a:b, a:c and b:c range from 1.0:3.0 to 3.0:1.0.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: March 1, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Jacob J. Habeeb, Morton Beltzer
  • Lubricant composition containing complexes of alkoxylated amine, hydrocarbylsalicylic acid and adenine
    Patent number: 5290463
    Abstract: A composition of matter having utility in lubricant formulations, said composition being the reaction product of adenine, alkoxylated amine and hydrocarbylsalicylic acid and having the formula ##STR1## where R is a hydrocarbyl group of from 2 to 22 carbon atoms, R.sup.1 is hydrocarbyl group of from 2 to 30 carbon atoms, R.sup.2 is hydrogen or a hydrocarbyl group of 1 to 20 carbon atoms, x and y are each independently integers of from 1 to 15 with the proviso that the sum of x+y is from 2 to 20, and a, b and c are independent numbers from 1.0 to 3.0 wherein the ratios between a:b, a:c and b:c range from 1.0:3.0 to 3.0:1.0.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: March 1, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: Jacob J. Habeeb
  • Crosslinked polyester amide membranes and their use for organic separations
    Patent number: 5290452
    Abstract: The present invention is directed to a polyester/amide membrane, its preparation and its use for organic liquid separation. The polyester/amide membrane is made by reacting a dianhydride with a polyester diol in a 2:1 to 1.05:1 mole ratio to end cap the diol to produce a prepolymer which is reacted with excess thionyl chloride to convert all of the unreacted anhydride and all carboxylic acid groups to acid chloride groups. The resulting acid chloride derivative is dissolved in organic solvent and interfacially reacted with a diamine dissolved in an aqueous solvent. The excess solutions are removed and the resulting thin film membrane is dried. The membranes are useful for organic liquid separations, especially the separation of aromatic hydrocarbons from mixtures of same with non-aromatic hydrocarbons, preferably under perstraction or pervaporation conditions.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: March 1, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: Robert C. Schucker
  • Lubricant composition containing complexes of alkoxylated amine, hydrocarbylsulfonic acid and adenine
    Patent number: 5290462
    Abstract: A composition of matter having utility in lubricant formulations, said composition being the reaction product of adenine, alkoxylated amine and hydrocarbylsulfonic acid and having the formula ##STR1## where R is a hydrocarbyl group of from 2 to 22 carbon atoms, R.sup.1 is a hydrocarbyl group of from 2 to 30 carbon atoms, R.sup.2 is hydrogen or a hydrocarbyl group of from 1 to 20 carbon atoms, x and y are each independently integers of from 1 to 15 with the proviso that the sum of x+y is from 2 to 20, and a, b and c are independent numbers from 1.0 to 3.0 wherein the ratios between a:b, a:c and b:c range from 1.0:3.0 to 3.0:1.0.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: March 1, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: Jacob J. Habeeb
  • Rendering oily wastes landtreatable or usable
    Patent number: 5288391
    Abstract: A process for deoiling wastes is disclosed. The process is integrated with a refinery and utilizes a refinery intermediary hydrocarbon stream as a solvent to recover waste oil for reprocessing in the refinery and to produce waste solids, which are either reused or disposed for landtreatment.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: February 22, 1994
    Assignee: Exxon Research & Engineering Company
    Inventor: Omer Biceroglu
  • Composites with interphases and methods of making the same
    Patent number: 5288555
    Abstract: A composite having fibers of relatively high elastic modulus embedded in a matrix of relatively low elastic modulus is provided with an interphase of elastic modulus less than the matrix modulus and cohesive energy higher than the matrix cohesive energy. The resulting composite has enhanced strength and toughness.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: February 22, 1994
    Assignee: Exxon Research Engineering Company
    Inventors: Liza M. Monette, Arnold Lustiger, Michael P. Anderson, John P. Dismukes, H. Daniel Wagner, Cary N. Marzinsky, Russell R. Mueller
  • Pervaporation process employing permeate recycle
    Patent number: 5288712
    Abstract: The selectivity of a membrane pervaporation aromatics/non-aromatics separation process is unexpectedly improved by the recycle of permeate to the separation process for co-processing with fresh feed. The selectivity obtained is greater than that achieved by processing either the feed or a recycle permeate stream by itself.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: February 22, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: Tan J. Chen
  • Inorganic/organic inhibitor for corrosion of iron containing materials in sulfur environment
    Patent number: 5279651
    Abstract: An organic salt, 2,4 Diamino-6-mercapto pyrimidine sulfate, has been combined with oxysalts of group VB or IVB of the periodic table to provide inorganic/organic inhibitor formulations having excellent corrosion resistant characteristics.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: January 18, 1994
    Assignee: Exxon Research & Engineering Company
    Inventors: Trikur A. Ramanarayanan, Hyacinth L. Vedage
  • Conversion of hydrocarbons using microwave radiation
    Patent number: 5277773
    Abstract: C.sub.1+ hydrocarbons can be effectively converted to primarily unsaturated hydrocarbon and hydrogen by subjecting the C.sub.1+ hydrocarbon to microwave radiation in the presence of water and at least one plasma initiator that is capable of initiating an electric discharge in an electromagnetic field.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: January 11, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: William J. Murphy
  • Regenerating a plasma initiator using oxygen-containing gas in the presence of microwave radiation
    Patent number: 5277770
    Abstract: Plasma initiators that have become deactivated due to the accumulation of carbonaceous deposits, sulfur deposits, or both thereon can be regenerated by contact with an oxygen-containing gas in the presence of microwave radiation.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: January 11, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: William J. Murphy
  • Multimetallic sulfide catalyst containing noble metals for hydrodenitrogenation
    Patent number: 5278121
    Abstract: The present invention relates to novel catalysts for removing heteroatoms, particularly nitrogen, from hydrocarbonaceous feedstocks. The catalysts are comprised of highly dispersed molybdenum sulfide promoted with a noble metal such that the noble metal is in an oxidation state greater than 0 and coordinated to S. The noble metal is selected from Pt, Pd, Rh, and Ir. It is preferred that the catalysts of be prepared from a precursor composition selected from platinum ethoxyethyl xanthate or platinum dithiocarbamate. Additionally, the catalyst may include a promotor sulfide such as nickel sulfide, cobalt sulfide or iron sulfide, etc. or mixtures thereof.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: January 11, 1994
    Assignee: Exxon Research & Engineering Company
    Inventors: Gopal H. Singhal, Leo D. Brown, X. B. Cox, III, Thomas R. Halbert
  • Regenerating a plasma initiator using molecular hydrogen in the presence of microwave radiation
    Patent number: 5277771
    Abstract: Plasma initiators that have become deactivated due to the accumulation of carbonaceous deposits, sulfur deposits, or both thereon can be regenerated by contact with a gas containing molecular hydrogen in the presence of microwave radiation.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: January 11, 1994
    Assignee: Exxon Research & Engineering Company
    Inventors: William J. Murphy, Alberto Ravella
  • Improved method for transferring entrained solids to a cyclone
    Patent number: 5275641
    Abstract: Accordingly, the present invention, in one embodiment, encompasses an apparatus for the fluidized catalytic cracking of a hydrocarbon feed comprising: a riser which is generally vertically positioned within a catalyst disengaging zone and which has a plurality of openings around the circumference of the riser at its discharge end. The openings in the riser have a vertical stub portion that extends tangentially outwardly from the riser and communicates with a first end of an upwardly sloping curvilinear tunnel that terminates at a second end. The second end of the tunnel opens into a tangential opening in the primary cyclone. The area of the opening of the first end of the tunnel is larger than the area of the opening of the second end of the tunnel.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: January 4, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Robert F. Tammera, Donald F. Shaw, Kenneth J. Reinman, George Melfi
  • Lubricant composition containing alkoxylated amine salt of trithiocyanuric acid
    Patent number: 5275745
    Abstract: A lubricant oil composition useful for reducing friction in an internal combustion engine which comprises(a) a major amount of a lubricant oil basestock, and(b) a minor amount of an alkoxylated amine salt of trithiocyanuric acid, said salt having the formula: ##STR1## where R is a hydrocarbyl group having from 2 to 22 carbon atoms, n is an integer from 1 to 3, and x and y are each independently integers of from 1 to 15 with the proviso that the sum of x+y is from 2 to 20.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: January 4, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Jacob J. Habeeb, Morton Beltzer
  • Spiral wound element for separation
    Patent number: 5275726
    Abstract: An improved spiral wound element for separations is disclosed wherein the improvement comprises using as the feed/retentate space one or more layers of a material having an open cross-sectional area in the range 30 to 70% and as the permeate spacer material at least three layers of material two of which are fine and have an open cross-sectional area of about 10 to 50% surrounding a coarse layer having an open cross-sectional area of about 50 to 90%.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: January 4, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Joseph L. Feimer, Tan-Jen Chen, Dean L. Smith, Jr., Donald T. Bray, Deborah de la Cruz
  • Low temperature halogenation of alkanes
    Patent number: 5276226
    Abstract: The invention relates to a process for selectively producing alkyl halides from alkanes, such as methane and ethane at relatively mild temperatures and pressures in an organic liquid phase in the presence of halogen and transition metal complex. The alkane may be neat if in a liquid form, or may be solubilized with a suitable organic solvent, if the alkane not a liquid at reaction conditions. The reaction is for a time, under conditions of temperature and pressure and in effective amounts that will permit the formation of alkyl halides. Optional hydrolysis to the corresponding alcohols may follow. The alkyl halides have utility as precursors for alternative fuels, such as methanol.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: January 4, 1994
    Assignee: Exxon Research & Engineering Company
    Inventors: Istvan T. Horvath, Raymond A. Cook, Gabor Kiss
  • Carbonyl containing compounds via radical grafting
    Patent number: 5274051
    Abstract: Novel carbonyl containing compositions are prepared by contacting, in the presence of a free radical initiator, a first compound selected from the group consisting of saturated hydrocarbons, substituted saturated hydrocarbons, polymers and mixtures thereof with a carbonyl containing compound or mixtures thereof having the structure: ##STR1## where X and Y are independently selected from OH, OR.sub.1, NR.sub.1 R.sub.2 and R.sub.1 wherein R.sub.1 and R.sub.2 are selected independently from the group consisting of aryl radicals or alkyl radicals of from 1 to 18 carbon atoms.
    Type: Grant
    Filed: November 5, 1992
    Date of Patent: December 28, 1993
    Assignee: Exxon Research & Engineering Company
    Inventors: Stanley J. Brois, Jacqueline Ogletree