Patents by Inventor Anthony-Joseph DiMaio

Anthony-Joseph DiMaio 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).

  • Process for the oligomerization of ?-olefins having low unsaturation
    Patent number: 7129306
    Abstract: A process is disclosed for the preparation of a poly(?-olefin) polymer wherein the process comprises polymerizing at least one ?-olefin in the presence of hydrogen and a catalytically effective amount of catalyst comprising the product obtained by combining a metallocene catalyst with a cocatalyst, the metallocene catalyst being at least one meso compound of general formula: wherein: A1 and A2 are independently selected from the group consisting of mononuclear and polynuclear hydrocarbons; M1 is a metal from group IVb, Vb, or VIb of the Periodic Table; R1 and R2 are independently selected from the group consisting of hydrogen, C1–C10 alkyl, C1–C10-alkoxy, C6–C10 aryl, C6–C10 aryloxy, C2–C10 alkenyl, C7–C40 arylalkyl, C7–C40 alkylaryl, C8–C40 arylalkenyl and halogen; R7 is selected from the group consisting of: ?BR11, ?AlR11, —Ge—, —Sn—, —O—, —S—, ?SO, ?SO2, ?NR11, ?CO, ?PR11 and ?P(O)R11, where R11, R12, and R13 are independently selected from the group consisting of hydrogen, halogen, C1–C10 alky
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: October 31, 2006
    Assignee: Crompton Corporation
    Inventor: Anthony-Joseph DiMaio
  • Process for the oligomerization of alpha-olefins having low unsaturation
    Publication number: 20040147693
    Abstract: A process is disclosed for the preparation of a poly(&agr;-olefin) polymer wherein the process comprises polymerizing at least one &agr;-olefin in the presence of hydrogen and a catalytically effective amount of catalyst comprising the product obtained by combining a metallocene catalyst with a cocatalyst, the metallocene catalyst being at least one meso compound of general formula: 1
    Type: Application
    Filed: January 20, 2004
    Publication date: July 29, 2004
    Applicant: CROMPTON CORPORATION, a corporation of the State of Delaware
    Inventor: Anthony-Joseph DiMaio
  • Process for the oligomerization of &agr;-olefins having low unsaturation
    Patent number: 6706828
    Abstract: A process is disclosed for the preparation of a poly(&agr;-olefin) polymer wherein the process comprises polymerizing at least one &agr;-olefin in the presence of hydrogen and a catalytically effective amount of catalyst comprising the product obtained by combining a metallocene catalyst with a cocatalyst, the metallocene catalyst being at least one meso compound of general formula: wherein: A1 and A2 are independently selected from the group consisting of mononuclear and polynuclear hydrocarbons; M1 is a metal from group IVb, Vb, or VIb of the Periodic Table; R1 and R2 are independently selected from the group consisting of hydrogen, C1-C10 alkyl, C1-C10-alkoxy, C6-C10 aryl, C6-C10 aryloxy, C2-C10 alkenyl, C7-C40 arylalkyl, C7-C40 alkylaryl, C8-C40 arylalkenyl and halogen; R7 is selected from the group consisting of: ═BR11, ═AlR11, —Ge—, —Sn—, —O—, —S—, ═SO, ═SO2, ═NR11, ═CO, ═PR11 and &
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: March 16, 2004
    Assignee: Crompton Corporation
    Inventor: Anthony-Joseph DiMaio
  • Process for the oligomerization of alpha-olefins having low unsaturation
    Publication number: 20030232937
    Abstract: A process is disclosed for the preparation of a poly(&agr;-olefin) polymer wherein the process comprises polymerizing at least one &agr;-olefin in the presence of hydrogen and a catalytically effective amount of catalyst comprising the product obtained by combining a metallocene catalyst with a cocatalyst, the metallocene catalyst being at least one meso compound of general formula: 1
    Type: Application
    Filed: June 4, 2002
    Publication date: December 18, 2003
    Applicant: CROMPTON CORPORATION
    Inventor: Anthony-Joseph DiMaio