Patents Examined by Paul F. Shaver
  • Organosilicon-modified charge transporting compound and curable composition containing the compound and having charge transporting ability
    Patent number: 6376695
    Abstract: An organosilicon-modified charge transporting compound having a structure represented by the following Formula (I): wherein A represents a charge transporting group, Q represents a hydrolytic group or a hydroxyl group, R2 represents a monovalent hydrocarbon group or a halogen-substituted monovalent hydrocarbon group having 1 to 15 carbon atoms, n is 1 to 18, m is 1 to 3, and 1 is 1 to 5; and a curable composition containing the organosilicon-modified charge transporting compound and a cure type resin chiefly composed of an organosilicon high polymer.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: April 23, 2002
    Assignees: Dow Corning Asia Ltd., Dow Corning Toray Silicone Co., Ltd., Canon Kabushiki Kaisha
    Inventors: Nobuo Kushibiki, Kikuko Takeuchi, Hideki Kobayashi, Toru Masatomi, Kazuo Yoshinaga, Yuichi Hashimoto, Shunichiro Nishida
  • Metallic copper catalyst and process for the synthesis of organohalosilanes
    Patent number: 6365766
    Abstract: Organohalosilanes are prepared by reacting an organic halide with metallic silicon particles in the presence of a metallic copper catalyst which is a metallic copper powder in flake form having a bulk specific gravity of 1-3 g/cm3 and a mean particle size of 10 &mgr;m to 1 mm as measured by laser diffraction particle size distribution analysis.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: April 2, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Mikio Aramata, Masaaki Furuya, Yoshihiro Shirota, Akio Muraida, Susumu Ueno, Toshio Shinohara
  • Preparation of halopropyldimethylchlorosilanes
    Patent number: 6359161
    Abstract: A halopropyldimethylchlorosilane is prepared by reacting dimethylchlorosilane with an allyl halide in the presence of an iridium catalyst. The reaction is effected in the presence of an internal olefin compound, typically 1,5-cyclooctadiene. The internal olefin compound suppresses deactivation of the iridium catalyst during reaction. Using a smaller amount of the iridium catalyst, the process produces the halopropyldimethylchlorosilane in high yields.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: March 19, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoichi Tonomura, Tohru Kubota, Mikio Endo
  • Process for selective reduction
    Patent number: 6355822
    Abstract: Process for the stereoselective reduction of chiral &agr;- or &bgr;-keto esters which have a chiral center in the &ggr; position in an inert solvent at temperatures from −80 to +50° C. using a reductant obtained by reaction of NaBH4 and (D)- or (L)-tartaric acid, to give the corresponding diastereomeric hydroxy compounds in each case.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: March 12, 2002
    Assignee: DSM Fine Chemicals Austria Nfg GmbH & CoKG
    Inventors: Dean Vincent Johnson, Peter Pöchlauer, Herfried Griengl
  • Method for making a catalyst composition
    Patent number: 6350891
    Abstract: Phosphonitrile halides are prepared employing the use of disilazanes. The resultant products may be further reacted with cyclosiloxanes to form siloxane containing phosphonitrile halides.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: February 26, 2002
    Assignee: Dow Corning Limited
    Inventors: David Eglin, Jean de la Cro Habimana, Sarah Louise O'Hare, Richard Taylor
  • Preparation of silyl-bridged fluorenyl-cyclopentadienyl ligands and silyl-bridged fluorenyl-cyclopentadienyl metallocenes
    Patent number: 6346635
    Abstract: A simplified process for the industrial preparation of silyl-bridged fluorenyl-cyclopentadienyl ligands and also a process for preparing silyl-bridged fluorenyl-cyclopentadienyl metallocenes are described.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: February 12, 2002
    Assignee: Basell Polyolefine GmbH
    Inventor: Carsten Bingel
  • Ether containing siloxy compounds
    Patent number: 6346637
    Abstract: The present invention relates to compounds of the formula where R1, R2 and R3 are independently selected from alkoxy radicals having from 1 to 8 carbon atoms; R4 and R5 are independently selected from the group consisting of alkylene having 1 to 12 carbons, arylenes having 6 carbon atoms and alkarylenes having 7 to 10 carbon atoms and n is an integer of from 1 to 10. These compounds may be used in rubber compositions.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: February 12, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Francois Kayser, Wolfgang Lauer, Thierry Florent Edme Materne
  • Process for working up residues from the direct synthesis of organochlorosilanes
    Patent number: 6344578
    Abstract: The invention relates to a process for preparing alkylchlorosilanes from the liquid constituents of the residues from the direct synthesis of alkylchlorosilanes which have a boiling point of above 70° C. at 1013 hPa and comprise disilanes, in which the residues are heated with hydrogen chloride and silicon at temperatures of at least 300° C., with at least 10% by weight of trichlorosilane and/or tetrachlorosilane, based on the weight of the alkylchlorosilanes formed, being formed at the same time.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: February 5, 2002
    Assignee: Wacker-Chemie GmbH
    Inventors: Konrad Mautner, Bernd Köhler, Gudrun Tamme
  • Process for producing fluorinated silicon compound
    Patent number: 6344579
    Abstract: There is disclosed a convenient and efficient process for producing a fluorinated silicon compound which comprises reacting a silicon compound having at least one group selected from the group consisting of a hydroxyl group, an alkoxy group, and an aryloxy group bonded to silicon atom, with a compound represented by the formula (1): wherein R1, R2, R3, and R4 may be the same or different, and each represents a substituted or unsubstituted, saturated or unsaturated alkyl group, or a substituted or unsubstituted aryl group; and R1 and R2 or R3 and R4 can bond to form a ring having one or more nitrogen atoms or having one or more nitrogen atoms and other hetero atoms; or R1 and R3 can bond to form a ring having two or more nitrogen atoms or having two or more nitrogen atoms and other hetero atoms, to fluorinate the groups.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: February 5, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kouki Fukumura, Takashi Shimaoka, Hideaki Oikawa, Hiroshi Sonoda, Ken'ichi Goto, Junko Naruse, Hidetoshi Hayashi, Tsuyoshi Yasutake
  • Phosphinimine modification of organic polymers and silicones
    Patent number: 6339166
    Abstract: Methods have been developed to produce phosphazene modified organic or siloxane polymers. The method includes (a) providing an organic or siloxane polymer comprising phosphine units, and (b) reacting the organic or siloxane polymer with a phosphazene azide compound under conditions wherein the phosphazene azide compound is bound to the phosphine unites in the polymer, thereby producing the phosphazene-modified organic or siloxane polymer. The organic polymer of step (a) is produced by reacting a first monomer comprising phosphine with a second monomer via free radical or anionic polymerization techniques to produce the organic polymer comprising phosphine units. The first and second monomers can be identical. A wide variety of organic polymer backbones can be modified using these techniques.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: January 15, 2002
    Assignee: The Penn State Research Foundation
    Inventors: Harry R. Allcock, Thomas J. Hartle, Michael B. McIntosh, Nicolas J. Sunderland, Robbyn Prange, Jonathan P. Taylor
  • Process for preparing organohalosilanes
    Patent number: 6339167
    Abstract: Organohalosilanes are prepared by reacting metallic silicon with a halogenated hydrocarbon in the presence of a copper or copper compound catalyst and an activated aluminum, aluminum alloy or aluminum carbide promotor. The reaction is carried out at a temperature of 250-400° C. in a stirred tank reactor or a fluidized bed reactor. The inventive process shortens the time required for activation in the Rochow reaction and increases the selectivity for desirable diorganodihalosilanes. The steady state is thus prolonged and conversion of the silicon enhanced, resulting in an improved reaction performance.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: January 15, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Mikio Aramata, Kazutoshi Fujioka, Masahiro Yuyama
  • Preparation of (polycyclic secondary-amino)dialkoxysilane
    Patent number: 6337416
    Abstract: A (polycyclic secondary-amino)dialkoxysilane favorably employable as a catalyst for polymerization of &agr;-olefin can be prepared by reacting tetrachlorosilane, or a mono(C1-C8)alkyltrichlorosilane with a polycyclic secondary-amine in a non-hydrous, non-alcoholic organic solvent in the presence of a hydrogen chloride-trapping reagent, to produce a (polycyclic secondary-amino)chlorosilane and reacting the (polycyclic secondary-amino)chlorosilane with an alkali metal alkoxide or an alkaline earth metal alkoxide in the presence of a lower alcohol.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: January 8, 2002
    Assignee: Ube Industries, Ltd.
    Inventors: Hiroyuki Ikeuchi, Yasuhisa Sakakibara, Masayoshi Oue
  • Semi-continuous process for preparing bis-silyl carboxamides
    Patent number: 6335456
    Abstract: For preparing bis-silyl carboxamides in a semi-continuous, reacting an amide or the N-trimethylsilyl derivative thereof with a silylating agent and, at the same time, extracting the bis-silyl carboxamide formed by distillation under reduced pressure.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: January 1, 2002
    Assignee: Atofina
    Inventors: David Reeves, Christophe Ruppin, Didier Faure
  • Complex containing biologically assimilable orthosilicic acid, which is under solid form, stable and concentrated, and a process for preparation of said complex
    Patent number: 6335457
    Abstract: The invention concerns a complex containing biologically assimilable orthosilicic acid and a process of preparation of said complex. In this complex, orthosilicic acid is complexed with a polypeptide and the complex is under solid, stable and concentrated form. The present invention also concerns cosmetic or therapeutic compositions, and a nutritional supplement containing said complex.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: January 1, 2002
    Assignee: Exsymol S.A.M.
    Inventors: Marie-Christine Seguin, Jean Gueyne
  • Thermosensitive cyclotriphosphazene-platinum complex conjugate, its preparation method and anticancer agent containing the same
    Patent number: 6333422
    Abstract: The present invention provides a novel thermosensitive cyclotriphosphazene-platinum complex conjugates represented by Formula 1, wherein m is a repeating unit of poly(alkoxyethylene glycol) selected from the integers 2, 7 and 12; n represents the length of the alkyl chain selected from the integers 0, 1, 2 and 3; x represents the length of the anionic amino acid residue selected from the integers 0 (amino malonic acid derivatives), 1 (aspartic acid derivatives) and 2 (glutamic acid derivatives); A2 is a bidentate chelating diamine selected from the group consisting of 2,2-dimethyl-1,3-propanediamine (dmpda), trans(±)-1,2-diaminocyclohexane (dach) and 1,1-diaminomethylcyclohexane (dmach).
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: December 25, 2001
    Assignee: Korea Institute of Science and Technology
    Inventors: Youn Soo Sohn, Soo-Chang Song, Sang Beom Lee
  • Organo omega-alkenyl cyclopentacarbyl silane-bridged metallocene compounds
    Patent number: 6329541
    Abstract: An (organo) ((omega-alkenyl) cyclopentacarbyl) (silane-bridged) metallocene compound is provided. Polymerization processes therewith are also provided.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: December 11, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Michael Jung, Helmut G. Alt, M. Bruce Welch
  • Method of preparing an organosilicon compound
    Patent number: 6326506
    Abstract: A method of preparing an organosilicon compound comprising effecting a hydrosilylation reaction between (a) unsaturated compounds with terminal unsaturated groups and (b) silane compounds described by formula HSiR0mW3−m, where W is selected from the group consisting of C1 to C6 alkoxy groups, C6 to C10 aryloxy groups, and halogen atoms, R0 is an organic group, and m is 0, 1, or 2 in the presence of (c) a platinum catalyst and (d) an auxiliary catalyst selected from the group consisting of (1) silyl esters of acids derived from oxo acids of sulfur; (2) amide compounds having N—Si bonds; (3) urea compounds; (4) silyl esters of carbamic acid; (5) phosphoric acid compounds; and (6) cyclic compounds selected from the group consisting of (i) hydroxypyridine compounds, (ii) 8-hydroxyquinoline compounds, (iii) oxazolidinone compounds, and (iv) N-hydroxysuccinimide compounds.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: December 4, 2001
    Assignee: Dow Corning Asia, Ltd.
    Inventors: Mamoru Tachikawa, Kasumi Takei
  • Process for the direct synthesis of organochlorosilanes using recovered CuCl catalyst
    Patent number: 6323357
    Abstract: A process for the direct synthesis of organochlorosilanes using CuCl prepared from the copper-containing residues from the direct synthesis of organochlorosilanes, where, in the preparation of the CuCl, in a first step, copper from an aqueous suspension of the copper-containing residues is oxidized to CuCl2 using mineral acid and oxidant, where mineral acid or oxidant or mineral acid and oxidant contain chlorine, giving an aqueous CuCl2 solution, and in a second step, the aqueous CuCl2 solution is reduced to CuCl using elemental iron.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: November 27, 2001
    Assignee: Wacker-Chemie GmbH
    Inventors: Wilfried Kalchauer, Herbert Straussberger, Willibald Streckel, Ulrich Goetze
  • Specific vinylsilane compound, organic luminous element containing the same, and method for producing vinylsilane compound
    Patent number: 6323355
    Abstract: A high-efficiency organic luminous element by which blue luminescence with high luminance and high color purity becomes possible, which comprises at least one compound represented by general formula (A): wherein Ra, Rb, Rc and Rd each represents a hydrogen atom or a substituent group, with the proviso that at least one substituent group of Ra, Rb, Rc and Rd is a group represented by general formula (B): wherein Re and Rf each represents a hydrogen atom or a substituent group, and Ara represents an aryl group, a heteroaryl group or an alkenyl group; and when at least two substituent groups of Ra, Rb, Rc and Rd are groups represented by general formula (B), the groups represented by general formula (B) may be the same or different.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: November 27, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tatsuya Igarashi
  • Process for the preparation of alkoxysilanes
    Patent number: 6323356
    Abstract: The present invention relates to a process for the preparation of alkoxysilanes in which at least one halogenosilane is reacted with at least one alcohol in the presence of metallic magnesium and the alkoxysilane is isolated from the crude product.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: November 27, 2001
    Assignee: Degussa-Huels Aktiengesellschaft
    Inventors: Peter Löwenberg, Thomas Schlosser, Michael Horn, Ralf Laven, Jaroslaw Monkiewicz