Patents by Inventor Frank J. Chen

Frank J. Chen 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).

  • Patent number: 5629394
    Abstract: A method is provided for the direct synthesis by living cationic polymerization of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino, cyanato, thiocyanato or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or a tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 13, 1997
    Assignee: Exxon Chemical Patents Inc
    Inventors: Herve M. Cheradame, Frank J. Chen, Jon E. R. Stanat, Hung A. Nguyen, Behrooz R. Tabar
  • Patent number: 5607890
    Abstract: A supported Lewis acid catalyst system for catalyzing hydrocarbon conversion reactions including cationic polymerization, alkylation, isomerization and cracking reactions is disclosed, wherein the catalyst system comprises an inorganic oxide support having immobilized thereon a least one strong Lewis acid comprising at least one metal salt of a strong Bronsted acid wherein the metal is selected from the group consisting of aluminum, boron gallium, antimony, tantalum, niobium, yttrium, cobalt, nickel, iron, tin, zinc, magnesium barium strontium, calcium, tungsten, molybdenum and the metals of the lanthanide series and wherein the strong Bronsted acid is selected from the group consisting of mineral and organic acids stronger than 100% sulfuric acid.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: March 4, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Frank J. Chen, Alain Guyot, Thierry Hamaide, Christophe Le Deore
  • Patent number: 5563313
    Abstract: Immobilized Lewis Acid catalyst comprising polymer having at least one Lewis Acid immobilized within the structure therein, said polymer having monomer units represented by the structural formula:--[A].sub.a --[B].sub.b --[C].sub.c --wherein a represents about 1 to about 99 mole %b represents about 0 to about 50 mole %c represents about 1 to about 99 mole %a+b+c is preferably about 100%; ##STR1## C is selected from the group consisting of: ##STR2## (III) combinations thereof, wherein D is OH, halide, OR.sup.4, NH.sub.2, NHR.sup.3, OM', or OM";E is the residue of the reaction of at least one Lewis Acid with the D substituent of monomer unit B;R.sup.1 represents proton, C.sub.1 -C.sub.24 alkyl group, or C.sub.3 -C.sub.24 cycloalkyl;R.sup.2 represents C.sub.1 -C.sub.24 alkylene group, C.sub.3 -C.sub.24 cycloalkylene, C.sub.6 -C.sub.18 arylene, or C.sub.7 -C.sub.30 alkylarylene;R.sup.3 represents C.sub.1 -C.sub.24 alkyl, C.sub.3 -C.sub.24 cycloalkyl, C.sub.1 -C.sub.24 aryl, or C.sub.7 -C.sub.30 alkylaryl;R.sup.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: October 8, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Tze-Chiang Chung, Frank J. Chen, Jon E. Stanat, Alok Kumar
  • Patent number: 5561095
    Abstract: A supported Lewis acid catalyst system for catalyzing hydrocarbon conversion reactions including cationic polymerization, alkylation, isomerization and cracking reactions is disclosed, wherein the catalyst system comprises an inorganic oxide support having immobilized thereon at least one relatively strong Lewis acid and at least one relatively weak Lewis acid.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: October 1, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Frank J. Chen, Christophe Le Deore, Roger Spitz, Alan Guyot
  • Patent number: 5481054
    Abstract: Immobilized Lewis Acid catalyst comprising polymer having at least one Lewis Acid immobilized within the structure therein, said polymer having monomer units represented by the structural formula:--[A].sub.a --[B].sub.b --[C].sub.c --whereina represents about 1 to about 99 mole %b represents about 0 to about 50 mole %c represents about 1 to about 99 mole %a+b+c is preferably about 100%; ##STR1## C is selected from the group consisting of: ##STR2## (III) combinations thereof, wherein D is OH, halide, OR.sup.4, NH.sub.2, NHR.sup.3, OM', or OM";E is the residue of the reaction of at least one Lewis Acid with the D substituent of monomer unit B;R.sup.1 represents proton, C.sub.1 -C.sub.24 alkyl group, or C.sub.3 -C.sub.24 cycloalkyl;R.sup.2 represents C.sub.1 -C.sub.24 alkylene group, C.sub.3 -C.sub.24 cycloalkylene, C.sub.6 -C.sub.18 arylene, or C.sub.7 -C.sub.30 alkylarylene;R.sup.3 represents C.sub.1 -C.sub.24 alkyl, C.sub.3 -C.sub.24 cycloalkyl, C.sub.1 -C.sub.24 aryl, or C.sub.7 -C.sub.30 alkylaryl;R.sup.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: January 2, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Tze-Chiang Chung, Frank J. Chen, Jon E. Stanat, Alok Kumar
  • Patent number: 5444135
    Abstract: A method is provided for the direct synthesis by living cationic polymerization of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino, cyanato, thiocyanato or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or a tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: August 22, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Herve M. Cheradame, Frank J. Chen, Jon E. R. Stanat, Hung A. Nguyen, Behrooz R. Tabar
  • Patent number: 5414177
    Abstract: Immobilized Lewis acid catalysts comprising a polymer having at least one Lewis acid immobilized within the polymer structure, said polymer having the monomer units represented by the structural formula: ##STR1## where D is OR', NH.sub.2, NHR', OM' or OM"; E is at least one Lewis acid residue, R is an alkyl group or cycloalkyl group; R.sup.2 is a divalent hydrocarbyl group, R' is an alkyl, cycloalkyl, aryl or alkylaryl group, M' is an alkali metal and M" is an alkaline earth metal. The immobilized Lewis acid catalyst is useful in olefin polymerization and in alkylation or aromatic or isoparrafinic hydrocarbons with an olefin.
    Type: Grant
    Filed: November 18, 1993
    Date of Patent: May 9, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Tze-Chiang Chung, Frank J. Chen, Jon E. Stanat, Alok Kumar
  • Patent number: 5336745
    Abstract: A method is provided for the direct synthesis of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or of tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: August 9, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Herve M. Cheradame, Robert D. Lundberg, Frank J. Chen, Jean de la Crois Habimana
  • Patent number: 5326921
    Abstract: Poly-n-butene is prepared from a mixed C.sub.4 hydrocarbon feedstream containing less than about 5 wt. % isobutylene using an AlCl.sub.3 -HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polymer product having a very narrow molecular weight distribution is obtained over the M.sub.n range of 300 to 900.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: July 5, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Frank J. Chen
  • Patent number: 5288677
    Abstract: Immobilized Lewis Acid catalyst comprising polymer having at least one Lewis Acid immobilized within the structure therein, said polymer having monomer units represented by the structural formula: ##STR1## wherein a represents about 1 to about 99 mole % b represents about 0 to about 50 mole %c represents about 1 to about 99 mole %a+b+c is preferably about 100%; ##STR2## C is selected from the group consisting of: ##STR3## D is OH, halide, OR.sup.4, NH.sub.2, NHR.sup.3, OM', or OM"; E is the residue of the reaction of at least one Lewis Acid with the D substituent of monomer unit B;R.sup.1 represents proton, C.sub.1 -C.sub.24 alkyl group, or C.sub.3 -C.sub.24 cycloalkyl;R.sup.2 represents C.sub.1 -C.sub.24 alkyl group, C.sub.3 -C.sub.24 cycloalkyl, C.sub.6 -C.sub.18 aryl, or C.sub.7 -C.sub.30 alkylaryl;R.sup.3 represents C.sub.6 -C.sub.18 alkyl, C.sub.3 -C.sub.24 cycloalkyl, C.sub.6 -C.sub.18 aryl, or C.sub.7 -C.sub.30 alkylaryl;R.sup.4 represents C.sub.6 -C.sub.18 alkyl, C.sub.3 -C.sub.24 cycloalkyl, C.sub.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: February 22, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Tze-Chiang Chung, Frank J. Chen, Jon E. Stanat, Alok Kumar
  • Patent number: 5268524
    Abstract: Essentially linear alkyl aromatics wherein the alkyl is attached to the aromatic ring at the .beta.-position are produced by the process wherein a linear hydrocarbon selected from the group consisting of linear .alpha.-olefins, linear .alpha.-substituted alkyl halides or linear .alpha.-substituted alkyl alcohol or mixtures of such olefins, halides or alcohols are reacted with an aromatic compound in the presence of an aprotic-polar cosolvent.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: December 7, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David J. Martella, John J. Jaruzelski, Frank J. Chen
  • Patent number: 5262508
    Abstract: Additives for improving the low temperature flow properties and oxidative stability of hydrocarbon oils are disclosed, which comprise the alkylation of a phenol in the presence of a dipolar aprotic cosolvent to produce an essentially linear alkylated phenol which is condensated with a sulphurizing agent to produce the low temperature flow improver wherein:(a) the polymer composition has a number average molecular weight of at least about 3,000 and a molecular weight distribution of at least about 1.5;(b) in the alkylated phenol reactant the alkyl groups (i) are essentially linear; (ii) have between 6 and 50 carbon atoms; and (iii) have an average number of carbon atoms between about 12 and 26; and(c) not more than about 10 mole percent of the alkyl groups on the alkylated phenol have less than 12 carbon atoms and not more than about 10 mole percent of the alkyl groups on the alkylated phenol have more than 26 carbon atoms.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: November 16, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David J. Martella, John J. Jaruzelski, Frank J. Chen
  • Patent number: 5177288
    Abstract: Polybutene is prepared from a mixed C.sub.4 hydrocarbon feedstream using an organo-aluminum/HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polybutene product having a very narrow molecular weight distribution is obtained over the M.sub.n range of 700 to 3,000. Dispersants derived from this polybutene exhibit substantially improved performance in lubricating oil compositions.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: January 5, 1993
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Frank J. Chen
  • Patent number: 5118875
    Abstract: Additives of improving the low temperature flow properties and oxidative stability of hydrocarbon oils are disclosed, which comprise the alkylation of a phenol in the presence of a polar aprotic cosolvent to produce an essentially linear alkylated phenol which is condensed with an aldehyde to produce the low temperature flow improver wherein:(a) the polymer composition has a number average molecular weight of at least about 3,000 and a molecular weight distribution of at least about 1.5;(b) in the alkylated phenol reactant the alkyl groups (i) are essentially linear; (ii) have between 6 and 50 carbon atoms; and (iii) have an average number of carbon atoms between about 12 and 26; and(c) not more than about 10 mole percent of the alkyl groups on the alkylated phenol have less than 12 carbon atoms and not more than about 10 mole percent of the alkyl groups on the alkylated phenol have more than 26 carbon atoms.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: June 2, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David J. Martella, John J. Jaruzelski, Frank J. Chen
  • Patent number: 5032653
    Abstract: A method is provided for the direct synthesis of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or a tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: July 16, 1991
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Herve M. Cheradame, Robert D. Lundberg, Frank J. Chen, Jean de la Croix Habimana
  • Patent number: 5017279
    Abstract: A multistep process is disclosed for the manufacture of synthetic lubricants from the C.sub.8 to C.sub.24 linear olefin components of below liquid fuel value petroleum distillate fractions derived via the high temperature thermal cracking of petroleum residua. Such feeds contain major amounts of 1-n-olefins, n-paraffins and greater than 0.1% concentration of sulfur mostly in the form aromatic, thiophene type sulfur compounds.In the first step of the present process such feeds are enriched in the straight chain aliphatic hydrocarbon components by one or more separation processes, preferably via urea adduction or by crystallization. In the second step, the olefin components are oligomerized to sulfur containing C.sub.30 to C.sub.60 polyolefins, preferably in the presence of BF.sub.3 complex catalysts. In the third step, the polyolefins are hydrogenated to novel isoparaffin lubricants in the presence of sulfur resistant catalysts, preferably transition metal sulfides.
    Type: Grant
    Filed: February 13, 1990
    Date of Patent: May 21, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Alexis A. Oswald, Frank J. Chen, Ramon L. Espino, Kuo L. Peng
  • Patent number: 4982045
    Abstract: This process is one in which a butene feed is passed through a fixed bed of granular aluminum trichloride catalyst, preferably in the presence of an added co-catalyst, to produce a polymerized butene product having number-average molecular weight of greater than about 250.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: January 1, 1991
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Frank J. Chen, Robert D. Lundberg
  • Patent number: 4952739
    Abstract: Poly-n-butene is prepared from a mixed C.sub.4 hydrocarbon feedstream containing less than about 5 wt. % isobutylene using an organo-aluminum chloride-HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polymer product having a very narrow molecular weight distribution is obtained over the M.sub.n range of 300 to 900. Detergents derived from this poly-n-butene exhibit substantially improved performance in lubricating oil compositions.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: August 28, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Frank J. Chen
  • Patent number: 4935576
    Abstract: Polybutene is prepared from a mixed C.sub.4 hydrocarbon feedstream using an organo-aluminum/HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polybutene product having a very narrow molecular weight distribution is obtained over the M.sub.n range of 700 to 3,000. Dispersants derived from this polybutene exhibit substantially improved performance in lubricating oil compositions.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: June 19, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Frank J. Chen
  • Patent number: 4849572
    Abstract: There is provided a process for preparing polybutenes having enhanced reactivity using a BF.sub.3 catalyst and an immediate quench procedure and controlled polymerization times of 12 to 40 minutes in combination with isobutylene conversions of at least 70%.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: July 18, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Frank J. Chen, Jacob Emert, Robert D. Lundberg, Gregory C. Giffin