Patents by Inventor Louis M. Wojcinski, II

Louis M. Wojcinski, II 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).

  • Preparation of highly branched, liquid polymers of ethylene and/or &agr;-olefins in the presence of aluminum-based catalyst systems
    Patent number: 6518384
    Abstract: Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an aluminum or gallium trihalide component, and, optionally, (3) a Group 4 metallocene dihalide component.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: February 11, 2003
    Inventors: Ayusman Sen, Louis M. Wojcinski, II, Shahid Murtuza
  • Process for synthesizing linear polymers of ethylene and alpha-olefins
    Patent number: 6489416
    Abstract: Ethylene and/or propylene are polymerized to form high molecular weight, linear polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which consists essentially of (1) an aluminum alkyl component, such as trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-octylaluminum and diethylaluminum hydride and (2) a Lewis acid or Lewis acid derivative component, such as _B(C6F5)3, {(CH3)2N(H)(C6H5)}+{B(C6F5)4}−, {(C2H5) 3NH}+{B(C6F5)4}−, {(C6F5)3C}+{B(C6F5)4}−, {(C6F5)3C}+{B(C6F5)3(Cl)−}, (C2H5) 2Al(OCH3), (C2H5)2Al(2,6-di-t-butyl-4-methylphenoxide), (C2H5)Al(2,6-di-t-butylphenoxide)2, (C2H5)2Al(2,6-di-t-butylphenoxide), 2,6-di-t butylphenol.methyl-aluminoxane or an alkylaluminoxane, and which may be completely free any transition metal component(s).
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: December 3, 2002
    Assignee: The Penn State Research Foundation
    Inventors: Ayusman Sen, Louis M. Wojcinski, II, Shengsheng Liu
  • Transition metal-free olefin polymerization catalyst
    Patent number: 6291387
    Abstract: Ethylene and/or propylene are polymerized to form high molecular weight, linear polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which consists essentially of (1) an aluminum alkyl component, such as trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-octylaluminum and diethylaluminum hydride and (2) a Lewis acid or Lewis acid derivative component, such as B (C6F5)3, [(CH3)2N (H) (C6H5)]+[B (C6F5)4]−, [(C2H5)3NH]+[B C6F5)4],−, [C(C6F5)3]+[B(C6F5)4]−, (C2H5)2Al(OCH3), (C2H5)2Al(2,6-di-t-butyl-4-methylphenoxide), (C2H5)Al(2,6 -di-t-butylphenoxide)2, (C2H5)2Al(2,6-di-t-butylphonoxide) , 2,6 -di-t-butylphenol·methylaluminoxane or an alkylaluminoxane, and which may be completely free any transition metal component(s).
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: September 18, 2001
    Assignee: Penn State Research Foundation
    Inventors: Ayusman Sen, Louis M. Wojcinski, II, Shengsheng Liu
  • Preparation of highly branched, liquid polymers of ethylene and/or &agr;-olefins in the presence of aluminum-based catalyst systems
    Patent number: 6232257
    Abstract: Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an aluminum or gallium trihalide component, and, optionally, (3) a Group 4 metallocene dihalide component.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: May 15, 2001
    Assignee: The Penn State-Research Foundation
    Inventors: Ayusman Sen, Louis M. Wojcinski, II, Shahid Murtuza