Patents by Inventor Arthur W. Langer, Jr.

Arthur W. Langer, Jr. 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: 4148756
    Abstract: A new improved catalyst system for polymeric polymerizations, includes at least one metal alkyl compound having the formula R.sub.n MR'.sub.3-n in combination with a Group IVB-VIII transition metal compound on a support and at least one Lewis base wherein R is selected from the group consisting of C.sub.3 to C.sub.20 secondary or tertiary alkyl, cycloalkyl, alkenyl or aralkyl groups, or ##STR1## wherein R" is a methyl or ethyl group and R"' is a C.sub.1 to C.sub.10 alkyl group; R' is selected from the group consisting of C.sub.1 to C.sub.20 primary alkyl, alkenyl or aralkyl groups, or a hydride, M is selected from the group consisting of aluminum, gallium, or indium; and n = 1-3. The improved catalyst system provides polymers having increased isotactic stereoregularity as well as lower catalyst residue.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: April 10, 1979
    Assignee: Exxon Research & Engineering Co.
    Inventor: Arthur W. Langer, Jr.
  • Patent number: 4147530
    Abstract: This invention relates to the use of chelated sodium hydridoaluminates or hydridoborates in hydride reductions of inorganic substrates. Novel or improved reductions are obtained at increased rates or selectivities in hydrocarbon media to recover metals.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: April 3, 1979
    Assignee: Exxon Research & Engineering Co.
    Inventors: Arthur W. Langer, Jr., William M. Bunting
  • Patent number: 4145313
    Abstract: A new improved catalyst system for alpha-olefin type polymerizations, includes at least one metal alkyl compound having the formula R.sub.n MR'.sub.3-n in combination with a Group IVB-VIII transition metal compound on a support and at least one Lewis base wherein R is selected from the group consisting of C.sub.3 to C.sub.20 secondary or tertiary alkyl, cycloalkyl, alkenyl or aralkyl groups; R' is selected from the group consisting of C.sub.1 to C.sub.20 primary alkyl, alkenyl or aralkyl groups, or a hydride, M is selected from the group consisting of aluminum, gallium, or indium; and n = 1-3. The improved catalyst system provides polymers having increased isotactic stereo-regularity as well as lower catalyst residue.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: March 20, 1979
    Assignee: Exxon Research & Engineering Co.
    Inventor: Arthur W. Langer, Jr.
  • Patent number: 4134938
    Abstract: Graft polymers are prepared by contacting an anionically polymerizable monomer such as butadiene with a polymer-Li.tertiary chelating polyamine complex such as polystyrene-Li.tetramethyl ethanediamine.
    Type: Grant
    Filed: July 28, 1977
    Date of Patent: January 16, 1979
    Assignee: Exxon Research & Engineering Co.
    Inventor: Arthur W. Langer, Jr.
  • Patent number: 4108921
    Abstract: Graft polymers are prepared by contacting an anionically polymerizable monomer such as butadiene with a polymer-Liotertiary chelating polyamine complex such as polystyrene-Liotetramethyl ethanediamine.
    Type: Grant
    Filed: August 12, 1976
    Date of Patent: August 22, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventor: Arthur W. Langer, Jr.
  • Patent number: 4107238
    Abstract: Novel graft copolymers of isobutylene-conjugated diene copolymeric backbones are prepared employing polymer lithiation wherein the polymeric lithiated complex is treated with an ether compound prior to a graft copolymerization reaction with styrene monomer whereby improved grafting efficiencies are obtained.
    Type: Grant
    Filed: January 22, 1976
    Date of Patent: August 15, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventors: Robert Roper, Arthur W. Langer, Jr.
  • Patent number: 4096092
    Abstract: A new improved Ziegler type catalyst system for alpha-olefin type polymerization includes a mixture of at least one Group IVB to VIII transition metal halide, an alkyl metal dihalide, and an N or O containing alkyl metal compound which is an amide or an alkoxide. The improved catalyst system provides polymers having improved isotacticity at increased rates.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: June 20, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventor: Arthur W. Langer, Jr.
  • Patent number: 4094818
    Abstract: A new improved Ziegler type catalyst system for alpha-olefin type polymerization includes R'.sub.3 Y or R'.sub.2 YX and mixtures thereof, at least one Group IVB-VIII transition metal halide and an alkyl metal compound selected from R'.sub.2 YNR.sub.2 and R'XYNR.sub.2, wherein Y is Al, Ga or In. The improved catalyst system provides increased polymerization activity without significantly affecting the crystallinity of the polymer.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: June 13, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventor: Arthur W. Langer, Jr.
  • Patent number: 4094876
    Abstract: Chelated lithium aluminum compounds are prepared by mixing a lithium aluminum compound such as a lithium aluminum hydride with a chelating agent wherein the agent contains at least one nitrogen atom. The chelating agent is a tertiary polyamine or aminoether. The resultant chelate is used for a variety of processes such as separations, catalytic reactions, substitution reactions, reductions, electrochemical reactions, and also as an oil and fuel additive.
    Type: Grant
    Filed: October 16, 1975
    Date of Patent: June 13, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventors: Arthur W. Langer, Jr., Thomas A. Whitney
  • Patent number: 4088666
    Abstract: This invention relates to the use of chelated lithium hydridoaluminates or hydridoborates in hydride reductions of organic and inorganic substrates. Novel or improved reductions are obtained at increased rates or selectivities in hydrocarbon media.
    Type: Grant
    Filed: May 17, 1977
    Date of Patent: May 9, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventors: Arthur W. Langer, Jr., Thomas A. Whitney
  • Patent number: 4078019
    Abstract: Graft polymers are prepared by contacting an anionically polymerizable monomer such as butadiene with a polymer-Liotertiary chelating polyamine complex such as polystyrene-Liotetramethyl ethanediamine.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: March 7, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventor: Arthur W. Langer, Jr.
  • Patent number: 4014663
    Abstract: The low temperature filterability of a petroleum middle distillate fuel, such as a heating oil or a diesel fuel is improved by adding to the fuel a synergistic combination of an N-aliphatic hydrocarbyl succinamic acid or derivative thereof with a dimer of an alpha olefin, with a polymer of such dimer, or with an alkylated aromatic compound such as an alkylated diphenyl or an alkylated diphenyl ether. The olefin dimers are of alpha olefins of from 16 to 40 carbon atoms. The alkyl groups on the alkylated aromatics are derived from C.sub.16 -C.sub.50 olefins or from dimers of C.sub.16 -C.sub.40 alpha-olefins. This invention is particularly advantageous in improviing the flow of a diesel fuel through a fine filter at low temperatures.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: March 29, 1977
    Assignee: Exxon Research and Engineering Company
    Inventors: Nicholas Feldman, Arthur W. Langer, Jr.
  • Patent number: 3999960
    Abstract: Materials consisting essentially of hydrocarbons with at least two straight chain alkyl groups are useful as wax crystal modifiers in petroleum oils, particularly middle distillate fuel oils such as heating oils and diesel fuels. These materials can be prepared by dimerizing .alpha.-olefins, which dimers can be used per se, or can be further derivatized, e.g. polymerized, alkylated on to an aromatic molecule, etc.
    Type: Grant
    Filed: October 2, 1974
    Date of Patent: December 28, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Arthur W. Langer, Jr., Wladimir Philippoff
  • Patent number: 3933879
    Abstract: Chelated lithium aluminum compounds are prepared by mixing a lithium aluminum compound such as a lithium aluminum hydride with a chelating agent wherein the agent contains at least one nitrogen atom. The chelating agent is a tertiary polyamine or aminoether. The resultant chelate is used for a variety of processes such as separations, catalytic reactions, substitution reactions, reductions, electrochemical reactions, and also as an oil and fuel additive.
    Type: Grant
    Filed: March 23, 1973
    Date of Patent: January 20, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Arthur W. Langer, Jr., Thomas A. Whitney