Patents by Inventor Sandor Nagy

Sandor Nagy 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: 6008394
    Abstract: A novel metallocene catalyst for the polymerization of olefin (co)polymers is of the general formula:R--SO.sub.2 --L--M--(X).sub.m T.sub.nwherein,M is a metal selected from Groups 3-10;T is a polymerization-stable anionic ancillary ligand;m+n is the valency of M minus 1;R is a C.sub.1 -C.sub.20 alkyl group, a C.sub.6 -C.sub.20 aryl ring or a C.sub.6 -C.sub.20 alkaryl or aralkyl group, optionally substituted with a halogen or an alkoxy group up to 10 carbon atoms;X is a halogen, alkoxy from C.sub.1 to C.sub.20, siloxy from C.sub.1 to C.sub.20, N(R).sub.2, a hydrocarbyl group containing up to about 12 carbon atoms, hydrogen or another univalent anionic ligand, or mixtures thereof;L is T as defined above with the proviso that one of the sites available for substitution is the attachment site of the sulfonyl group; andwherein L and T may be bridged.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: December 28, 1999
    Assignee: ARCO Chemicals Technology, L.P.
    Inventors: Sandor Nagy, John Tyrell, Bradley P. Etherton
  • Patent number: 5914408
    Abstract: A novel metallocene catalyst for the polymerization of olefin (co)polymers is of the general formula:Benzothiazole--E--M--X.sub.m L.sub.nwhere,M is a transition metal of Groups 3-10 of the Periodic Table;E is sulfur or oxygen; E being bond to the transition metal and to the carbon atom between sulfur and nitrogen of the benzothiazole moiety;L is a polymerization-stable anionic ancillary ligand;X is a halogen, alkoxy from C.sub.1 to C.sub.20, siloxy from C.sub.1 to C.sub.20, N(R.sub.1).sub.2, a hydrocarbyl group containing up to about 12 carbon atoms or hydrogen or mixtures thereof; preferably X is halogen, methoxy, ethoxy or siloxy (R.sub.1).sub.3 SiO--, where R.sub.1 is alkyl from C.sub.1 to C.sub.20 ; andm+n equals the valency of the M minus 1.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: June 22, 1999
    Assignee: Equistar Chemicals, LP
    Inventors: Ramesh Krishnamurti, Sandor Nagy, John Tyrell, Bradley P. Etherton
  • Patent number: 5902866
    Abstract: Disclosed is a catalyst having the general formula ##STR1## where L is a ligand having the formula ##STR2## L' is L, Cp, Cp*, indenyle fluorenyl, NR.sub.2, OR, or halogen, L can be bridged to L; X is halogen, NR.sub.2, OR, or alkyl from C.sub.1 to C.sub.12, M is zirconium or hafnium, R is alkyl from C.sub.1 to C.sub.12 or aryl from C.sub.6 to C.sub.12, R.sub.1 is R, alkaryl from C.sub.6 to C.sub.12, aralkyl from C.sub.6 to C.sub.12, hydrogen, or Si(R).sub.3, R.sub.2 is R.sub.1, halogen, COR, COOR, SOR, or SOOR, R.sub.3 is R.sub.2, OR, N(R).sub.2, SR, or a fused ring system, Cp is cyclopentadienyl, Cp* is pentamethylcyclopentadienyl, n is 0 to 3, and L.sub.B is an optional Lewis base. Also disclosed is a method of making a poly-.alpha.-olefin comprising polymerizing an .alpha.-olefin monomer using a catalyst such as that described above where M can be titanium, zirconium, or hafnium.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: May 11, 1999
    Assignee: Equistar Chemicals, L.P.
    Inventors: Sandor Nagy, Ramesh Krishnamurti, Bradley P. Etherton
  • Patent number: 5817835
    Abstract: Novel benzothioxepanone and benzothioxepane thione compounds are characterized by the formula ##STR1## wherein Z is: ##STR2## R is Cl, Br, F, C.sub.1 to C.sub.8 alkyl, or C.sub.1 to C.sub.8 alkoxy; X and Y are each hydrogen, or taken together form a fused cyclopentyl or cyclohexyl ring, with the proviso that when Z is ?1!, X and Y represent a fused cyclopentyl or cyclohexyl ring; and n is 0, 1, or 2. The compounds are useful as co-catalysts in the para-directed nuclear chlorination of toluene.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: October 6, 1998
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Thomas F. Smolka
  • Patent number: 5756611
    Abstract: A catalyst useful in the polymerization of .alpha.-olefins comprises the reaction product of an alcohol having the general formula ##STR1## with an organometallic compound having the general formulaLM(X).sub.v-1wherein Q is --COR.sup.12, --CR"R"(OR.sup.12) and --CR"R"N(R").sub.2 ;wherein each R" is independently selected from H and R, R is a C.sub.1 to C.sub.12 alkyl group or a C.sub.6 to C.sub.24 aryl group, R.sup.12 is R or a radical of the formula --(CH.sub.2).sub.w --O--(CH.sub.2).sub.y H, w and y being independently selected from 1 to 4;L is a .pi.-bonded ligand selected from (i.) a cyclopentadienyl or substituted cyclopentadienyl ring; (ii.) a boraaryl ring; (iii) a 1,2-azaborolinyl ring; or (iv.) a 5-membered heterocyclic ring;M is a Group 3 to 7 metal of the Periodic Table;v is the valence of M; andeach X is independently selected from halogen or a C.sub.1 -C.sub.6 alkyl group or a C.sub.6 -C.sub.24 aryl group.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: May 26, 1998
    Assignee: Lyondell Petrochemical Company
    Inventors: Bradley P. Etherton, Ramesh Krishnamurti, John A. Tyrell, Sandor Nagy
  • Patent number: 5747404
    Abstract: Disclosed is a catalyst having the formula ##STR1## where each R is independently selected from aliphatic from C.sub.1 to C.sub.6 and aromatic from C.sub.6 to C.sub.10, each R.sub.5 is independently selected from H, R, and L', each L' is independently selected from LM'L.sub.r X.sub.3-r or two L' groups form the bridge --LM'X.sub.2-r L.sub.r --, each L is independently selected from cyclopentadienyl, indenyl, and fluorenyl, X is chlorine or bromine, M' is zirconium, titanium, or hafnium, n is 5 to 500, the ratio of R to H+L in R.sub.5 is 0 to 100, the ratio of H to L' in R.sub.5 is 0 to 4, and r is 0 or 1.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: May 5, 1998
    Assignee: Lyondell Petrochemical Company
    Inventors: Sandor Nagy, John A. Tyrell
  • Patent number: 5744417
    Abstract: Disclosed is a supported catalyst which is the reaction product of(a) a silylamine polymer having the general formula ##STR1## where each R is independently selected from alkyl from C.sub.1 to C.sub.6 or aryl from C.sub.6 to C.sub.10, R.sub.1 is a divalent aliphatic or aromatic group from C.sub.2 to C.sub.20, "m" is 1 to about 100, and "n" is 2 to about 500, with(b) an organometallic compound having the general formulaQ--M--(X).sub.3where Q is a stabilizing ligand, each X is independently selected from halogen, alkyl from C.sub.1 to C.sub.6, or dialkylamino from C.sub.1 to C.sub.6, M is zirconium, titanium, or hafnium and M is bonded to a nitrogen in said silylamine polymer, and the ratio nitrogens bondable to M in said silylamine polymer to M atoms is 1:1 to 3:1.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: April 28, 1998
    Assignee: Lyondell Petrochemical Company
    Inventors: Sandor Nagy, John A. Tyrell
  • Patent number: 5714603
    Abstract: A process for the pare-directed nuclear chlorination of an alkylbenzene, such as toluene, comprises reacting the alkylbenzene with chlorine in the presence of a Lewis acid catalyst and a novel co-catalyst of the formula: ##STR1## where Z is ##STR2## and R is Cl, Br, F, C.sub.1 to C.sub.8 alkyl to C.sub.1 to C.sub.8 alkoxy; x and y are each hydrogen, or taken together form a fused cyclopentyl or cyclohexyl ring; n is 0, 1 or 2, with the proviso that when Z is ?3!, n is 0 or 1.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: February 3, 1998
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Thomas F. Smolka
  • Patent number: 5637659
    Abstract: Disclosed is a catalyst having the general formula ##STR1## where Q is a ligand containing the ring ##STR2## R is hydrogen, N(R').sub.2, OR', or R', each R' is independently selected from alkyl from C.sub.1 to C.sub.10, aryl from C.sub.6 to C.sub.15, alkaryl C.sub.7 to C.sub.15, and aralkyl from C.sub.7 to C.sub.15, each X is independently selected from hydrogen, halogen, alkoxy from C.sub.1 to C.sub.10.sub., dialkylamino from C.sub.1 to C.sub.10, methyl, ##STR3## each R.sub.1 is independently selected from halogen, alkoxy from C.sub.1 to C.sub.10, and R', L is ##STR4## Q, or X, where L can be bridged to Q, B is an optional base, "n" is 0 to 5, and M is titanium, zirconium, or hafnium.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: June 10, 1997
    Assignee: Lyondell Petrochemical Company
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Bradley P. Etherton
  • Patent number: 5637660
    Abstract: Disclosed is a novel bidentate pyridine transition metal catalyst having the general formula ##STR1## where Y is O, S, NR, ##STR2## each R is independently selected from hydrogen or C.sub.1 to C.sub.6 alkyl, each R' is independently selected from C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, C.sub.6 to C.sub.16 aryl, halogen, or CF.sub.3, M is titanium, zirconium, or hafnium, each X is independently selected from halogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, or ##STR3## L is X, cyclopentadienyl, C.sub.1 to C.sub.6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or ##STR4## and "n" is 1 to 4. Also disclosed is a method of making a poly-.alpha.-olefin comprising polymerizing an .alpha.-olefin monomer using that catalyst or a catalyst that has the general formula ##STR5## where Y, M, L, X, and R' were previously defined.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: June 10, 1997
    Assignee: Lyondell Petrochemical Company
    Inventors: Sandor Nagy, Ramesh Krishnamurti, John A. Tyrell, Leonard V. Cribbs, Mary Cocoman
  • Patent number: 5621153
    Abstract: A process for the para-directed nuclear chlorination of an alkylbenzene, such as toluene, comprises reacting the alkylbenzene with chlorine in the presence of a Lewis acid catalyst and a novel co-catalyst of the formula: ##STR1## where Z is ##STR2## ; and R is Cl, Br, F, C.sub.1 to C.sub.8 alkyl to C.sub.1 to C.sub.8 alkoxy; x and y are each hydrogen, or taken together form a fused cyclopentyl or cyclohexyl ring; n is 0, 1 or 2, with the proviso that when Z is [3], n is 0 or 1.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: April 15, 1997
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Thomas F. Smolka
  • Patent number: 5554775
    Abstract: Disclosed is a catalyst having the general formula ##STR1## where Q is a ligand containing the ring ##STR2## R is hydrogen, N(R').sub.2, OR', or R', each R' is independently selected from alkyl from C.sub.1 to C.sub.10, aryl from C.sub.6 to C.sub.15, alkaryl C.sub.7 to C.sub.15, and aralkyl from C.sub.7 to C.sub.15, each X is independently selected from hydrogen, halogen, alkoxy from C.sub.1 to C.sub.10, dialkylamino from C.sub.1 to C.sub.10, methyl, ##STR3## each R.sub.1 is independently selected from halogen, alkoxy from C.sub.1 to C.sub.10, and R', L is ##STR4## Q, or X, where L can be bridged to Q, B is an optional base, "n" is 0 to 5, and M is titanium, zirconium, or hafnium.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: September 10, 1996
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Sandor Nagy, Bradley P. Etherton
  • Patent number: 5539124
    Abstract: Disclosed is an azametallocene polymerization catalyst having the general formula ##STR1## where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, Cp is a ligand containing a cyclopentadienyl group, B is a Lewis acid, Y is a halogen, alkoxy from C.sub.1 to C.sub.20, siloxy from C.sub.1 to C.sub.20, or mixtures thereof, M is titanium, zirconium, or mixtures thereof, m is 1 to 4, and n is 0 to 2, p is 0 to 2, q is 0 to 1, and m+n+q=4. The catalyst is useful in polymerizing unsaturated olefinic monomers such as ethylene.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: July 23, 1996
    Assignee: Occidental Chemical Corporation
    Inventors: Bradley P. Etherton, Sandor Nagy
  • Patent number: 4614540
    Abstract: The invention relates to a process for the removal of contaminating chemical elements from pig-iron, steel and other metals and metal alloys in course of the refining process with oxygen blast, as well as for accelerating hydrometallurgical processes.The essence of the process lies in that quantity of free oxygen radicals and temperature of smelting bath are controlled.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: September 30, 1986
    Assignee: Vasipari Kutato es Fejleszto Vallalat
    Inventors: Sandor Nagy, Jozsef Meszaros, Akos Ban, Janos Horvath, Andras Pethes, Lajos Schottner, Janos Sziklavari
  • Patent number: 4193922
    Abstract: Herbicidal and fungicidal compounds of the formula ##STR1## wherein R.sub.1 is substituted or unsubstituted phenyl or naphthyl and R.sub.2 and R.sub.3 are the same or different and are C.sub.1 -C.sub.5 alkyl or from a five- or six-membered ring.
    Type: Grant
    Filed: June 8, 1976
    Date of Patent: March 18, 1980
    Assignee: Eszakmagyarorszagi Vegyimuvek
    Inventors: Pal Agocs, Istvan Fabian, Andras Gajdacsi, Sandor Nagy, Zoltan Pinter
  • Patent number: 4113287
    Abstract: End fitting or armature for multi-channel hoses having a positioning plate and a guiding plate extending perpendicularly to the longitudinal axis of the hose and apertured to receive hose coupling elements. Means are provided for varying the axial spacing of the plates. A resilient element is disposed between the plates, a part of which seats in a groove formed in the internal surface of the end fitting when the plates are pulled towards each other under load.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: September 12, 1978
    Assignees: Banyaszati Kutato Intezet, Skotchinksy Institut Gornogo Dela, Taurus Gumiipari Vallalat
    Inventors: Nikolai Tikhonovich Bogatirev, Jevgeny Grigorievich Filianovich, Alexandr Dmitrievich Ignatyev, Alexandr Nikolaevich Merkulov, Jury Filippovich Ponomarenko, Jury Gheorghievich Shein, Jozsef Baso, Bela Frituz, Jozsef Korbuly, Sandor Nagy, Sandor Mikes, Zsolt Pap
  • Patent number: 4027024
    Abstract: Pharmaceutical compositions of synergistic analgesic activity are provided which comprise an azido compound of the following formula: ##STR1## or a salt thereof wherein R is hydrogen, methyl, ethyl, acetyl or morpholino-methyl and a compound of the formula: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 are hydrogen or lower alkyl and the dotted lines represent hydrogenated bonds or olefinic bonds and pharmaceutically acceptable salts and quaternary salts thereof, in admixture with suitable inert solid or liquid carriers or dilutents.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: May 31, 1977
    Assignee: Chinoin Gyogyszer-es Vegyeszeti Termekek Gyara RT
    Inventors: Jozsef Knoll, Zsuzsanna Furst, Zoltan Meszaros, Peter Szentmiklosi, Agoston David, Istvan Hermecz, Attila Mandi, Rezso Bognar, Sandor Makleit, Gyula Valovics, Laszlo Szavik, Sandor Nagy
  • Patent number: 3954986
    Abstract: An analgesic substitute for morphine comprising the synergistic combination of azidomorphine or azidocodeine with a pyrimidazolium.
    Type: Grant
    Filed: November 14, 1973
    Date of Patent: May 4, 1976
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara RT.
    Inventors: Jozsef Knoll, Zsuzsanna Furst, Zoltan Meszaros, Peter Szentmiklosi, Agoston David, Istvan Hermecz, Attila Mandi, Rezso Bognar, Sandor Makleit, Gyula Valovics, Laszlo Szlavik, Sandor Nagy