Chalcogen Bonded Directly To Aluminum Patents (Class 556/181)
  • Patent number: 5998644
    Abstract: A novel organometallic compound of formula M[(.mu.-OR').sub.2 M'R.sub.2 ].sub.2 can be vaporized at a low temperature and advantageously employed in the CVD of a heterometallic oxide film of the MM'.sub.2 O.sub.4 type, wherein M is a divalent element such as Be, Mg, Zn or Cd; M' is a Group 13 element such as Al or Ga; and R and R' are each independently a C.sub.1-10, alkyl group, with the proviso that if M is Mg, M' is not Al.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: December 7, 1999
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Yun-Soo Kim, Won-Yong Koh, Su-Jin Ku, Chang-Gyoun Kim, Kyu-Sang Yu
  • Patent number: 5902891
    Abstract: An aluminoxane product is prepared by reacting water which contains a stabilizing agent, such as a lithium halide, with a hydrocarbyl aluminum compound, such as tri-methylaluminum, in an organic solvent. The product has increased resistance to gel-formation therein because of the stabilizing agent dissolved in the water used in forming the reaction product.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: May 11, 1999
    Assignee: Albemarle Corporation
    Inventors: Samuel A. Sangokoya, Lawrence H. Shepherd, Jr., Edward A. Burt
  • Patent number: 5895771
    Abstract: Catalyst compositions for the polymerization of an olefin are disclosed which comprise a neutral metallocene and, as the ionizing agent an anionic aluminum-containing complex which is a fluorinated alkoxy and/or aryloxy aluminate. The fluorinated alkoxy aluminate can be of the formula A.sup.+ (Al(OR).sub.4).sup.-, where A.sup.+ is a cation capable of reacting with the neutral metallocene to produce a cationic metallocene and a non-reacting neutral species and R is a fluorinated alkyl and/or aryl group, with a representative group for A.sup.+ being (C.sub.6 H.sub.5).sub.3 C.sup.+ and with the representative fluorinated alkoxy aluminates including ?Al(OC(Ph)(CF.sub.3).sub.2).sub.4 !.sup.-, where Ph is phenyl, and ?Al(OC(CH.sub.3)(CF.sub.3).sub.2).sub.4 !.sup.-.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: April 20, 1999
    Assignee: Akzo Nobel NV
    Inventors: Ronald A. Epstein, Thomas J. Barbarich
  • Patent number: 5789610
    Abstract: Materials and methods for preparing the surface of dentin, enamel, or other natural or industrial substrates containing or capable of binding metallic ions, for adhesion of composite materials or resins, are disclosed. Preferably, the substrate is treated with an aqueous solution comprising at least one acid, acidic salt, or chelating or sequestering agent.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: August 4, 1998
    Assignee: American Dental Association Health Foundation
    Inventor: Rafael L. Bowen
  • Patent number: 5693838
    Abstract: A aluminoxane product is prepared by reacting water which contains a stabilizing agent, such as a lithium halide, with a hydrocarbyl aluminum compound, such as trimethylaluminum, in an organic solvent.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: December 2, 1997
    Assignee: Albemarle Corporation
    Inventors: Samuel A. Sangokoya, Lawrence H. Shepherd, Jr., Edward A. Burt
  • Patent number: 5670682
    Abstract: Stable liquid clathrate aluminoxane compositions are obtained by the reaction, in aromatic solvents, of aluminoxanes such as, methylaluminoxane, with organic, inorganic or organometallic compounds, such as salts, which can dissociate or partially dissociate into cationic and anionic species (M-X species).
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: September 23, 1997
    Assignee: Albemarle Corporation
    Inventor: Samuel A. Sangokoya
  • Patent number: 5532373
    Abstract: An aluminate complex represented by formula (I): ##STR1## with the groups in the aluminate complex as defined in the specification, and which is capable of radical generation upon photoexcitation; a photopolymerizable composition comprising an ethylenically unsaturated polymerizable compound and the aluminate complex; and an image-forming material comprising a support, an organoaluminum compound anion represented by formula (I'): ##STR2## with the groups in the organoaluminum compound anion as defined in the specification, and a photobleachable dye; are disclosed.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: July 2, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hirotaka Matsumoto, Jun Yamaguchi, Naoto Yanagihara, Hisashi Yamamoto
  • Patent number: 5527930
    Abstract: Alkylaluminoxanes having improved catalytic activity such as when they are used in combination with metallocenes for the polymerization of alpha-olefins, are prepared by treating an organic solvent solution of an alkylaluminoxane, such as methylaluminoxane, with anhydrous lithium halide.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: June 18, 1996
    Assignee: Albemarle Corporation
    Inventor: Samuel A. Sangokoya
  • Patent number: 5463002
    Abstract: A halogenated aluminum-based cocatalyst provides a metathesis catalyst system with high activity, moisture insensitivity, and long pot lives. The cocatalyst can be employed in solution or in in-mold bulk polymerization processes.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: October 31, 1995
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Tomoo Sugawara, Shingo Kudo, Kin-ichi Okumura
  • Patent number: 5344948
    Abstract: Neutral single-source molecular organic precursors containing tetradentate tripodal chelating ligands are provided that are useful for the preparation of films using chemical vapor deposition. These complexes can be generally represented by the formula ##STR1## wherein "M" is selected from the group consisting of a lanthanide, an actinide, a Group IIIA metal, a Group IIIA metalloid, a Group IVA metal, a Group IVA metalloid, a Group VA metal, a Group VA metalloid, a Group IIIB metal, a Group IVB metal, a Group VB metal, a Group VIB metal, a Group VIIB metal, and a Group VIIIB metal. The ligand "Z" can be present or absent, i.e., k=0-1, and is selected from the group consisting of hydrogen, halide, and a group bonded to "M" through N, O, P, S, As, Si, or C. In the tetradentate tripodal chelating ligand "E.sub.c " is N, P, or As, and m=0-1. When "E.sub.t " is N, P, or As, m=1, and when "E.sub.t " is O, S, or Se, m=0. Each "R.sup.1 " is independently selected from the group consisting of hydrogen, (C.sub.1 -C.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: September 6, 1994
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: John G. Verkade
  • Patent number: 5273686
    Abstract: Organic-solvent soluble magnesium hydrides or formulas ##STR1## are prepared by catalytically hydrogenating finely powdered magnesium, optionally in the presence of a magnesium halide, in an organic solvent in the presence of their MgH.sub.2 -free counterparts in whichQ is an alkyl, alkenyl, alkoxy, dialkylamino, aralkyl, aryl or diarylamino group, each with up to 18 carbon atoms,R is an alkenyl, aralkyl or aryl group, each with up to 18 carbon atoms,X is chlorine, bromine, or iodine, ##STR2## is a chelating ligand, E is --CH.sub.2, --N(R)-- or --O--,is an alkylene radical of the formula --(CH.sub.2).sub.p,D is a dialkylamino, diarylamino or alkoxy group, each with up to 18 carbon atoms,M is aluminum or boron,m is 1, 2, or 3, and1<n.ltoreq.50.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: December 28, 1993
    Assignee: Studiengesellschaft Kohle mbH
    Inventors: Borislav Bogdanovic, Manfred Schwickardi
  • Patent number: 5179220
    Abstract: This invention pertains to a method of making non-aqueous solutions of aluminum and aluminum-zirconium compounds. The non-aqueous solutions are produced by: (A) protonating a hydroxylated solvent, such as ethanol or propylene glycol, by adding an acid selected from ZrOCl.sub.2, ZrO(OH)Cl, ZrCl.sub.4, AlCl.sub.3, HCl, HI, HBr, HNO.sub.3, and mixtures thereof to the hydroxylated solvent; and (B) adding at a controlled rate to protonated solvent aluminum chlorohydrate, Al.sub.2 (OH).sub.a Cl.sub.6-a, wherein a has the value of greater than 0 but less than 6; until the desired solution is formed. The non- aqueous solutions are useful in antiperspirant compositions.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: January 12, 1993
    Assignee: Somerville Technology Group, Inc.
    Inventors: Dimitris E. Katsoulis, Donald A. Kadlec
  • Patent number: 5177233
    Abstract: A catalyst system for the preparation of 1,2-dichloroethane by reacting ethylene and chlorine in a solvent, if desired, in the presence of an inhibitor for reducing the formation of byproducts. The catalyst system comprises a phenolate/chlorine complex. The invention also relates to a process for the chlorination of ethylene using indicated catalyst system.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: January 5, 1993
    Assignee: Wacker Chemie GmbH
    Inventors: Ludwig Schmidhammer, Klaus Haselwarter, Hermann Klaus, Gerhard Dummer, Klaus-Peter Mohr
  • Patent number: 5157137
    Abstract: Clear, gel free solutions of alkylaluminoxane, such as methylaluminoxane, in an organic solvent, such as toluene, are provided by treating a solution of the alkylaluminoxane with an anhydrous salt and/or hydroxide of an alkali or alkaline earth metal and then removing the solids from the solution such as by filtration.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: October 20, 1992
    Assignee: Ethyl Corporation
    Inventor: Samuel A. Sangokoya
  • Patent number: 5154912
    Abstract: The peroxides which include the O.sup.17 isotope, especially the hydrogen peroxides and peroxides and hydroperoxides prepared therefrom, are well adapted as nonradioactive labeled compounds for use in the medicinal and biological arts.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: October 13, 1992
    Assignee: Atochem
    Inventors: Jean-Pierre Schirmann, Jean-Jacques Barieux
  • Patent number: 5141676
    Abstract: Organic-solvent soluble magnesium hydrides of the formulas(MgH.sub.2).sub.n. MgQ.sub.2 (II)(MgH.sub.2).sub.n. RMgX (III) ##STR1## are prepared by catalytically hydrogenating finely powdered magnesium, optionally in the presence of a magnesium halide, in an organic solvent in the presence of their MgH.sub.2 -free counterparts in whichQ is an alkyl, alkenyl, alkoxy, dialkylamino, aralkyl, aryl or diarylamino group, each with up to 18 carbon atoms,R is an alkenyl, aralkyl or aryl group, each with up to 18 carbon atoms,X is chlorine, bromine, or iodine,--E D.fwdarw. is a chelating ligand,E is --CH.sub.2, --N(R)-- or --O--,is an alkylene radical of the formula --(CH.sub.2).sub.p,D is a dialkylamino, diarylamino or alkoxy group, each with up to 19 carbon atoms,M is aluminum or boron,m is 1, 2, or 3, and1<n.ltoreq.50.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: August 25, 1992
    Assignee: Studiengesellschaft Kohle mbH
    Inventors: Borislav Bogdanovic, Manfred Schwickardi
  • Patent number: 5142078
    Abstract: Aluminum alkoxides can be formed by reaction of aluminum metal and alcohol in the presence of soluble titanium (e.g., derived from a titanium carboxylate) as the catalyst for the reaction.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: August 25, 1992
    Assignee: Akzo nv
    Inventors: Fawzy G. Sherif, Johst H. Burk
  • Patent number: 5112991
    Abstract: A process is provided herein for preparing an organo-substituted sodium aluminum hydride by reacting sodium, aluminum, an organic compound of specific structure containing a hydroxyl group and hydrogen.In such process, an aluminum alloy is used as the aluminum.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: May 12, 1992
    Assignee: Mitsui Toatsu Chemicals Incorporated
    Inventors: Tetsuya Iwao, Shuichi Osaka, Takao Sakaki, Tadao Nishida, Kiyoshi Yamamura, Seijiro Koga, Reiji Hirai, Haruo Nakagawa
  • Patent number: 5091536
    Abstract: Organic-solvent soluble magnesium hydrides of the formulas ##STR1## are prepared by catalytically hydrogenating finely powdered magnesium, optionally in the presence of a magnesium halide, in an organic solvent in the presence of their MgH.sub.2 -free counterparts in whichQ is an alkyl, alkenyl, alkoxy, dialkylamide, aralkyl, aryl or diarylamide group, each with up to 18 carbon atoms,R is an alkenyl, aralkyl or aryl group, each with up to 18 carbon atoms,X is chlorine, bromine, or iodine,--E D.fwdarw. is a chelating ligand,E is --CH.sub.2, --N(R)-- or --O--,is an alkylene radical of the formula --(CH.sub.2).sub.p,D is a dialkylamide, diarylamide or alkoxy group, each with up to 18 carbon atoms,M is aluminum or boron,m is 1, 2, or 3, and1<n.ltoreq.50.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: February 25, 1992
    Assignee: Studiengesellschaft Kohle mbh
    Inventors: Borislav Bogdanovic, Manfred Schwickardi
  • Patent number: 5084586
    Abstract: Disclosed are novel compounds which are useful as initiators for cationically polymerizable monomers. The novel compounds comprise a carbon containing cation (e.g., trimethyloxonium) which is capable of initiating cationic polymerization and a non-nucleophilic counterion which is an at least partially fluorinated hydrocarbylsulfonato metallate (e.g. perfluoroethylsulfonato-aluminate). The disclosed initiators are capable of initiating the cationic polymerization of a wide variety of monomers such as epoxides, tetrahydrofuans, oxazolines, vinyls, lactones, and the like.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: January 28, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Omar Farooq
  • Patent number: 5066487
    Abstract: Dibasic aluminium salts of acylated amino acids having the formula ##STR1## (R.dbd.C.sub.5 --C.sub.10 hydrocarbon, R' is the main chain of the illustrated .alpha.-amino-acid) have antisudoral properties. R' may be such that the .alpha.-aminoacid is singular, e.g. lysine, glycine or aspartic acid, or a mixture, e.g. a hydrolysate of a protein such as collagen, keratin or casein. R may be saturated, e.g. pentyl, heptyl or nonyl, or unsaturated, e.g. dec-9-enyl. Antisudoral compositions containing these salts are described.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: November 19, 1991
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean V. Morelle, Eliane Lauzanne-Morelle
  • Patent number: 5041584
    Abstract: Methylaluminoxane can be formed by the reaction of a tetraalkyldialuminoxane containing C.sub.2 or higher alkyl groups with trimethylaluminum with the trimethylaluminum being present in an amount which is not present in stoichiometric excess. Another embodiment of the present invention involves the synthesis of the methylaluminoxane by reaction of a trialkylaluminum compound or a tetraalkyldialuminoxane containing C.sub.2 or higher alkyl groups with water to form a polyalkylaluminoxane with is then reacted with trimethylaluminum. A third embodiment of the present invention involves the synthesis of the methylaluminoxane by reaction of the aforementioned polyalkylaluminoxane with trimethylaluminum and then with water.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: August 20, 1991
    Assignee: Texas Alkyls, Inc.
    Inventors: Clark C. Crapo, Dennis B. Malpass
  • Patent number: 5008420
    Abstract: Novel precursors for forming spinel upon oxidation or evaporation from solution can be formed by reaction of an alkylaluminum alkoxide with a magnesium alkoxide to yield an organoaluminum-magnesium alkoxide coordination compound or complex having a molar ratio of aluminum to magnesium of substantially 2:1.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: April 16, 1991
    Assignee: Akzo N.V.
    Inventors: Carl C. Greco, Kelly B. Triplett
  • Patent number: 4996338
    Abstract: The present invention relates to a process for preparing aluminoxane which comprises reacting an organoaluminum compound and water in a solvent system containing solvent having a higher boiling point than that of the organoaluminum compound, or reacting an organoaluminum compound and water, and then adding a solvent system containing the solvent having a higher boiling point than that of the organoaluminum compound to the reaction mixture; and thereafter condensing the resulting reaction mixture under atmospheric pressure or reduced pressure.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: February 26, 1991
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Hiroshi Maezawa, Norio Tomotsu
  • Patent number: 4996339
    Abstract: A compound for developing electrostatic latent images for use in a toner wherein the compound comprises an aluminum compound of aromatic o-aminocarboxylic acid, the aromatic o-aminocarboxylic acid being represented by the formula ##STR1## wherein Q is benzene nucleus which is optionally substituted with at least one nuclear substituent or naphthalene nucleus which is optionally substituted with at least one nuclear substituent, R is hydrogen, alkyl (C.sub.1 -C.sub.18), aryl(C.sub.1 -C.sub.18), aralkyl(C.sub.1 -C.sub.18), or --COR', wherein R' is alkyl(C.sub.1 -C.sub.8), aryl(C.sub.1 -C.sub.8), alkoxy (C.sub.1 -C.sub.8) or amino.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: February 26, 1991
    Assignee: Orient Chemical Industries, Ltd.
    Inventors: Akihiro Tada, Takashi Kiriu, Motoomi Arakawa
  • Patent number: 4990640
    Abstract: In accordance with the present invention, there are provided benzene-insoluble organoaluminum oxy-compounds having less than 10% in terms of Al atom of Al component dissolving in benzene kept at 60.degree. C. and less than 0.09 of a (D.sub.1260 /D.sub.1220) of an absorbance (D.sub.1260) at 1260 cm.sup.-1 to an absorbance (D.sub.1220) at 1220 cm.sup.-1, both obtained by infrared spectrophotometry, and also processes for preparing said benzene-insoluble organoaluminum oxy-compounds.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: February 5, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Toshiyuki Tsutsui, Mamoru Kioka, Akinori Toyota
  • Patent number: 4855120
    Abstract: A process is described by which two useful products, silane and hydrocarbyloxyaluminun hydride, can be produced concurrently and in excellent yield. The process involves reaction between tetrahydrocarbyloxysilane such as Si(OEt).sub.4 and tertiary amine alane such as AlH.sub.3 .multidot.NEt.sub.3.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: August 8, 1989
    Assignee: Ethyl Corporation
    Inventor: Everett M. Marlett
  • Patent number: 4837358
    Abstract: Process for the production of 9-alkenyl acetates is provided. The process comprises first disproportionating cyclooctene with an .alpha.-olefin to give a 1,9-alkadiene. The alkadiene is metallated to form a 1-metallo-9-alkene, which is then contacted with oxygen to produce a 9-alkenyl-1-oxymetallo compound, which is optionally hydrolyzed to the corresponding alcohol, with the alcohol being esterified to the desired 9-alkenyl ester or the 9-alkenyl-1-oxymetallo compound can be directly esterified, to produce the desired 9-alkenyl esters.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: June 6, 1989
    Assignee: Phillips Petroleum Company
    Inventors: Jim D. Byers, Charles A. Drake
  • Patent number: 4748283
    Abstract: Stable liquid hydrocarbon-soluble novel magnesium dialkoxide compositions useful as or in the preparation of polymerization catalysts and initiators for the polymerization of alpha-olefins and diolefins are prepared, for instance, by reacting certain organomagnesium compounds in liquid hydrocarbon solvents with (a) aliphatic, cycloaliphatic or acyclic beta- and gamma-alkyl-substituted C.sub.5 -C.sub.18 monohydric secondary and tertiary alcohols; or (b) mixtures of (a) with beta- and/or gamma-alkyl-unsubstituted C.sub.3 -C.sub.18 aliphatic secondary or tertiary alcohols; or (c) mixtures of (a) with C.sub.1 -C.sub.18 aliphatic primary linear alcohols. Such dialkoxides, and complexes thereof, soluble in hydrocarbon or chlorinated hydrocarbon solvents, can be reacted with triorganoaluminum compounds such as, for instance, TIBAL, organolithium, or organopotassium compounds, e.g., alkyllithiums, or alkali metal alkoxides.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: May 31, 1988
    Assignee: Lithium Corporation of America
    Inventor: Conrad W. Kamienski
  • Patent number: 4744974
    Abstract: A process for producing alumina wherein an aluminum trialkyl is reacted with a substantially water immiscible alcohol to produce an aluminum alkoxide and an alkane, the reaction between the aluminum trialkyl and the alcohol being conducted in an organic phase, the alkoxide being hydrolyzed in an aqueous phase which is in contact with the organic phase, the alumina formed by hydrolysis of the aluminum alkoxide being recovered from the aqueous phase.
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: May 17, 1988
    Assignee: Vista Chemical Company
    Inventors: Duane J. Lewis, William H. McNeese
  • Patent number: 4732993
    Abstract: Novel compounds having the formulaR.sub.n Al(OR.sub.f).sub.3-nin which R is a C.sub.1 -C.sub.6 alkyl group, R.sub.f is a C.sub.1- C.sub.6 fluoroalkyl group, and 0.ltoreq.n<3 have been found suitable as Ziegler-Natta type co-catalyst components for polymerization or co-polymerization of olefins.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: March 22, 1988
    Assignee: Stauffer Chemical Company
    Inventors: Dennis B. Malpass, Andrzej M. Piotrowski, Michael J. Breen
  • Patent number: 4678496
    Abstract: As new compound is provided a cyclohexane derivative of the formula ##STR1## wherein R represents a hydrogen atom or an alkyl group, an alkylthioalkyl group or an unsubstituted or substituted phenyl group; and R.sup.1 represents an alkyl group, an unsubstituted or substituted benzyl group, a phenethyl group, a phenoxymethyl group, a 2-thienylmethyl group, an alkoxymethyl group or an alkylthiomethyl group, or a salt of said cyclohexane compound.This cyclohexane compound exhibits useful plant-growth regulating effects on crop-plants and also non-crop plants such as lawn and may be prepared by cyclization of an acetonylsuccinic acid dialkyl ester, followed by reaction with an organic acid chloride and by intermolecular rearrangement.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: July 7, 1987
    Assignee: Kumiai Chemical Industry Co., Ltd.
    Inventors: Kenji Motojima, Takeshige Miyazawa, Yasufumi Toyokawa, Masafumi Matsuzawa, Hiroshi Hokari, Shoji Kusano
  • Patent number: 4611072
    Abstract: A heat-sensitive recording material which comprises in its color reactant system, as developer for the color former, at least one aluminum or zinc phenate of a phenolsulfonyl compound of the formula ##STR1## wherein R is C.sub.1 -C.sub.12 alkyl, cycloalkyl, phenyl, benzyl, or phenyl which is substituted by halogen, lower alkyl, lower alkoxy, nitro or methylenedioxy, andX is hydrogen, halogen, lower alkyl or lower alkoxy.
    Type: Grant
    Filed: June 5, 1985
    Date of Patent: September 9, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: Hermann Nachbur, Christel Tempel
  • Patent number: 4609755
    Abstract: An ester interchange process, preferably for the formation of vinyl higher esters from methyl acrylate or methacrylate, is conducted in the presence of a novel alcoholate of the formula[M.sup.1 (OR.sup.4).sub.2-a R.sub.a.sup.6 ].sub.x [M.sup.2 (OR.sup.4).sub.n-b R.sub.b.sup.6 ].sub.y IwhereinM.sup.1 is selected from Mg, Ca and BaM.sup.2 is selected from Ti, Zr and Aln is 3 or 4 and is the valency of M.sup.2a is a number from 0 to 1.5b is a number from 0 to 0.75nx+Y=1 and each is a number from 0.005 to 0.995 and is such that the compound is liquid at 30.degree.0 C.R.sup.4 is selected from alkyl having at least 4 carbon atoms, cycloalkyl having at least 4 carbon atoms and aminoalkyl, andeach group R.sup.6 is individually selected from C.sub.1-3 alkoxy and blocking groups that are substantially less reactive in the ester interchange reaction than the groups OR.sup.4.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: September 2, 1986
    Assignee: Allied Colloids Limited
    Inventor: David Farrar
  • Patent number: 4577042
    Abstract: A complex of a tetradentate tetraanionic ligand L of the formula: ##STR1## and a metal, preferably a transition metal, is described. The chelate and ring Z-CH-M-Z functional groups Z, such as N or O are resistant to oxidation and the ring contains 4 to 7 preferably 5 to 6 chain atoms. An osmium complex containing two pyridine ligands is an oxidation catalyst. Further activation by anodic oxidation and heating to a temperature exceeding 30.degree. C. greatly increases catalytic activity.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: March 18, 1986
    Assignee: California Institute of Technology
    Inventors: Terrence J. Collins, Fred C. Anson, Stephen L. Gipson, Terry E. Krafft
  • Patent number: 4560403
    Abstract: As new compound is provided a cyclohexane derivative of the formula ##STR1## wherein R represents a hydrogen atom or an alkyl group, an alkylthioalkyl group or an unsubstituted or substituted phenyl group; and R.sup.1 represents an alkyl group, an unsubstituted or substituted benzyl group, a phenethyl group, a phenoxymethyl group, a 2-thienylmethyl group, an alkoxymethyl group or an alkylthiomethyl group, or a salt of said cyclohexane compound.This cyclohexane compound exhibits useful plant-growth regulating effects on crop-plants and also non-crop plants such as lawn and may be prepared by cyclization of an acetonylsuccinic acid dialkyl ester, followed by reaction with an organic acid chloride and by intermolecular rearrangement.
    Type: Grant
    Filed: September 22, 1983
    Date of Patent: December 24, 1985
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Kenji Motojima, Takeshige Miyazawa, Yasufumi Toyokawa, Masafumi Matsuzawa, Hiroshi Hokari, Shoji Kusano