Patents by Inventor Radu Bordeianu

Radu Bordeianu 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 preparing thermoplastic molding compositions
    Patent number: 6316550
    Abstract: One embodiment of the present invention provides a process, which includes: graft polymerizing a vinyl chloride monomer in suspension in the presence of a core-shell impact modifier; wherein the core-shell impact modifier includes: a core including polyvinyl chloride or vinyl chloride copolymers; and a shell including crosslinked alkyl (meth)acrylate homo- or copolymers. Another embodiment of the present invention provides a thermoplastic polyvinyl chloride molding composition modified with an elastomer-containing core-shell modifier, prepared by a process, which includes graft polymerizing a vinyl chloride monomer in suspension in the presence of a core-shell impact modifier; wherein the core-shell impact modifier includes a core including polyvinyl chloride or vinyl chloride copolymers; and a shell including crosslinked alkyl (meth)acrylate homo- or copolymers. Another embodiment of the present invention provides a plastic profile, which includes the above-noted composition.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: November 13, 2001
    Assignee: Vestolit GmbH & Co. KG
    Inventors: Axel Stieneker, Radu Bordeianu, Thomas Neu, Harald Sturm, Wilhelm Friedrich Schmitt
  • Process for preparing thermoplastic molding compositions
    Publication number: 20010004658
    Abstract: One embodiment of the present invention provides a process, which includes:
    Type: Application
    Filed: December 7, 2000
    Publication date: June 21, 2001
    Inventors: Axel Stieneker, Radu Bordeianu, Thomas Neu, Harald Sturm, Wilhelm Friedrich Schmitt
  • Process for preparing 2-aryl-2-chloromalonic diesters
    Patent number: 5777152
    Abstract: 2-Aryl-2-chloramalonic diester is prepared by reacting 2-arylmalonic diesters with aqueous hypochlorite in the presence of an inert solubilizer at pH 8 to 14.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: July 7, 1998
    Assignee: Huels Aktiengesellschaft
    Inventors: Christoph Theis, Radu Bordeianu, Wilfried Latz
  • Process for preparing ethylene copolymers
    Patent number: 5502125
    Abstract: An olefin copolymer is prepared by copolymerizing ethylene, an .alpha.-olefin and, optionally a diene having non-conjugated double bonds by solution polymerization in the presence of:(a) an organoaluminum compound,(b) a vanadium compound in the oxidation state from +3 to +5, and(c) an activator in a molar ratio of from 0.5 to 100 relative to vanadium of said vanadium compound, and an activator of a 2-halomalonic ester substituted by an aromatic group and having the formula ##STR1## wherein X=F, Cl, Br or I, Ar is an aromatic radical which is unsubstituted, monosubstituted or polysubstituted by alkyl or alkoxy groups and which is bound to the central carbon atom either directly or by an intervening carbonyl group; and R.sub.1 and R.sub.2 are hydrocarbon radicals having from 1 to 20 carbon atoms.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: March 26, 1996
    Assignee: Huels Aktiengesellschaft
    Inventors: Radu Bordeianu, Christoph Theis