Boron Containing Patents (Class 556/402)
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Publication number: 20020161230Abstract: A process for preparing boronic acids of the formula (I) and borinic acids of the formula (II), 1Type: ApplicationFiled: February 28, 2002Publication date: October 31, 2002Applicant: Clariant GmbHInventors: Andreas Meudt, Michael Erbes, Klaus Forstinger
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Patent number: 6420584Abstract: Ortho-substituted arylmetal compounds are prepared by deprotonation of aromatics which have a hydrogen atom in the ortho position relative to at least one halogen atom, one trifluoromethoxy group, one dialkylamino group, one nitrile group, one alkoxy group or one dialkylamido group. The arylmetal compounds can then be reacted with electrophilic reagents. Deprotonation of the aromatics is carried out using alkyl- or arylmetal compounds or metal hydrides in the presence of a catalytic amount of a secondary metal amide.Type: GrantFiled: December 17, 1999Date of Patent: July 16, 2002Assignee: Merck Patent GmbHInventors: Hans Christian Stiasny, Volker Reiffenrath
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Patent number: 6365643Abstract: The invention relates to modified cationic photoinitiators which exhibit a reduced tendency to crystallize, to a process for reducing the crystallization tendency of cationic photoinitiators, and to the use of the photoinitiators of the invention for the radiation curing of cationically curing compositions. The inventive cationic photoinitiators have the formula (IV): [R1—I—R2]+X− where R1 is a radical R2 is a radical in which Ar is a monovalent aromatic hydrocarbon radical and D being a radical and the remaining variables are defined herein.Type: GrantFiled: January 13, 2000Date of Patent: April 2, 2002Assignee: Th. Goldschmidt AGInventors: Sascha Oestreich, Wolfgang Müller
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Patent number: 6346636Abstract: This description addresses ionic compositions of matter comprising positively charged cations [Ct]+ and negatively charged anions [A]−, said anion comprising a central core Group 13 element to which are bound fluoroaryl ligands, at least one of said fluoroaryl ligands being substituted with a siloxy group represented by the symbols—SiOR3, wherein R is a C1-C30 hydrocarbyl or hydrocarbylsilyl substituent. [Ct]+ may be selected from any capable of use with olefin polymerization catalysts and typically will be from the group consisting of anilinium and ammonium cations, trityl carbenium cations, Group 11 metal cations, silylium cations, the cations of the hydrated salts of Group 1 or 2 metals, and derivatives of the foregoing anilinium, ammonium, trityl carbenium, and silylium cations containing C1-C20 hydrocarbyl, hydrocarbylsilyl, or hydrocarbylamine substituents for one or more hydrogen atoms of said cations.Type: GrantFiled: June 23, 2000Date of Patent: February 12, 2002Assignee: ExxonMobil Chemical Patents, Inc.Inventor: George Rodriguez
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Patent number: 6344529Abstract: Disclosed are compounds useful as catalyst activators for olefin polymerization, comprising structures of the following formulae: wherein: L+ is a protonated derivative of an element of Group 15 of the Periodic Table of the Elements, additionally bearing two hydrocarbyl substituents of from 1 to 50 carbons each, or a positively charged derivative of an element of Group 14 of the Periodic Table of the Elements, said Group 14 element being substituted with three hydrocarbyl substituents of from 1 to 50 carbons each; R1 is a divalent linking group of from 1 to 40 non-hydrogen atoms; R2 independently each occurrence is a ligand group of from 1 to 50 nonhydrogen atoms with the proviso that in a sufficient number of occurrences to balance charge in the compound, R2 is L+—R1—; M1 is boron, aluminum or gallium; Arf independently each occurrence is a monovalent, fluorinated organic group containing from 6 to 100 non-hydrogen atoms; Y is a Group 15 element; and Z is a GrouType: GrantFiled: December 6, 1999Date of Patent: February 5, 2002Assignee: The Dow Chemical CompanyInventors: Edmund M. Carnahan, Grant B. Jacobsen, Jerzy Klosin, Peter N. Nickias, David J. Schwartz, David R. Neithamer
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Publication number: 20020010332Abstract: A process for purifying formylphenylboronic acids of the formula (I) 1Type: ApplicationFiled: July 2, 2001Publication date: January 24, 2002Applicant: Clariant GmbHInventors: Frank Vollmuller, Andreas Meudt, Stefan Scherer
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Publication number: 20010051698Abstract: This invention relates to metallocene catalyst compositions which are highly active for the polymerization of olefins, particularly prochiral &agr;-olefins. The catalyst compositions contain at least one metallocene, and least one activator and a support that has been fluorided using a fluoride containing compound.Type: ApplicationFiled: June 20, 2001Publication date: December 13, 2001Inventor: Anthony N. Speca
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Patent number: 6242626Abstract: The present invention relates to boron-containing carbosilanes, a process for their preparation, boron-containing oligo- or polycarbosilazanes, a process for their preparation and their use and silicon borocarbonitride ceramics and a process for their preparation.Type: GrantFiled: September 29, 1999Date of Patent: June 5, 2001Assignee: Bayer AktiengesellschaftInventors: Aloys Eiling, Ralf Riedel, Lutz Ruwisch
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Patent number: 6180809Abstract: A boron and silicon oxynitride obtained by preparing a polyborosiloxane precursor, conducting nitriding pyrolysis of the precursor to obtain an amorphous boron and silicon oxynitride, and optionally conducting additional pyrolysis to obtain a crystallized boron and silicon oxynitride. The polyborosiloxane precursor is prepared by condensation, in the presence of a catalyst, of (2) a polychlorosilane represented by the formula R3R4SiCl2 in which the substituents R3 and R4 are identical or different and each represents a hydrogen atom, a chlorine atom, a linear or branched alkyl or alkenyl or alkynyl radical having 5 or less carbon atoms, or an aryl or aralkyl radical having 6 to 18 carbon atoms, with (2) an alkyl borate represented by the formula (R5O)3B in which R5 represents a linear or branched alkyl radical having 1 to 5 carbon atoms.Type: GrantFiled: February 28, 1997Date of Patent: January 30, 2001Assignee: L'Etat Francais, represente par le Delegue General pour l'ArmementInventors: Jean-Paul Pillot, Marc Birot, Jacques Dunogues, Yves Laurent, Paul L'Haridon, Laurence Bois
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Patent number: 6093840Abstract: Molecular silylalkylboranes, a process for their preparation, oligo- or polyborocarbosilazanes, a process for their preparation and their use and silicon carbonitride ceramics and a process for their preparation.Type: GrantFiled: September 27, 1999Date of Patent: July 25, 2000Assignee: Bayer AktiengesellschaftInventors: Martin Jansen, Hardy Jungermann
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Patent number: 5962713Abstract: The present invention relates to new carbosilane dendrimers comprising Si--O-metal bonds, to a method of preparing them and to their use.Type: GrantFiled: August 6, 1997Date of Patent: October 5, 1999Assignee: Bayer AGInventors: Harald Kraus, Michael Mager
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Patent number: 5869723Abstract: Ionic compounds represented by general formula (I), method of their production, olefin polymerization catalyst components, and olefin polymerization catalysts containing the components are provided.?M(R.sup.1).sub.k (R.sup.2).sub.1 (R.sup.3).sub.m (R.sup.4 -L).sub.n !.sup.- ?D!.sup.+ (I)(wherein, M is an element belonging to the Group 13; R.sup.1, R.sup.2 and R.sup.3 are pentafluorophenyl, etc., R.sup.4 is a substituted phenylene group, etc., k, l and m being each 0 or an integer of 1 to 3, and n being an integer of 1 to 4 such that k+l+m+n=4; L is trichlorosilyl, methyldichlorosilyl, dimethylchlorosilyl group, etc.; and D is a monovalent cation).Type: GrantFiled: February 10, 1997Date of Patent: February 9, 1999Assignee: Showa Denko K.K.Inventors: Shinji Hinokuma, Shigenobu Miyake, Michio Ono, Shintaro Inazawa
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Patent number: 5866705Abstract: The present invention relates to new polymeric silaborocarboazanes, a process for their preparation and their use.Type: GrantFiled: July 11, 1997Date of Patent: February 2, 1999Assignee: Bayer AktiengesellschaftInventors: Martin Jansen, Hardy Jungermann
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Patent number: 5792881Abstract: The invention relates to hydrolyzable and polyadditive silanes, a method of heir production and of their use in the production of (hetero) silicic acid polycondensates and of polyadducts. The silanes in accordance with the invention have the general formula?(HS--R.sup.5).sub.n R.sup.6 --S--E--R.sup.5 !.sub.a SiX.sub.x R.sup.3.sub.4-a-x (I)in which the groups and indices are equal or different and have the following meaning:E=--CO--NH--, CS--NH--, --CH.sub.2 --CH.sub.2 -- or --CH.sub.2 --CH(OH)--;R.sup.3 =alkyl, alkenyl, aryl, alkylaryl or arylalkyl each with 1 to 15 carbon atoms, whereby these groups may be interrupted by oxygen or sulfur atoms, by ester, carbonyl, amide or amino groups;R.sup.5 =Alkene, arylene, arylenealkene or arylenealkene each with 1 to 15 carbon atoms, whereby these groups may be interrupted by oxygen or sulfur atoms, by ester, carbonyl, amide or amino groups;R.sup.Type: GrantFiled: March 5, 1997Date of Patent: August 11, 1998Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.Inventors: Herbert Wolter, Werner Storch
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Patent number: 5712354Abstract: The invention relates to new transition metal compounds useful as olefin polymerization catalysts. They are characterized by the formula (V)(E)(W)M(L), which in which M is a transition metal, V, E, and W, is e.g.Type: GrantFiled: July 10, 1996Date of Patent: January 27, 1998Assignee: Mobil Oil CorporationInventors: James M. Boncella, David E. Richardson, Faisal A. Shafiq
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Patent number: 5703258Abstract: A flame retardant organic silicon and phosphorus containing compound is produced by reacting a silicon halides compound with an organic phosphorus compound to produce an organic silicon and phosphorus halides compound which is then reacted with an organic compound to produce an organic silicon and phosphorus containing compound. This organic silicon and phosphorus containing compound is incorporated in an otherwise more flammable organic material under reaction conditions and in an amount sufficient to reduce the combustibility of the otherwise more flammable organic material. The organic silicon and phosphorus containing compound may also be utilized as coating agents, adhesives, surfactants, insecticides, hydraulic fluid and other uses.Type: GrantFiled: November 20, 1996Date of Patent: December 30, 1997Inventor: David H. Blount
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Patent number: 5691436Abstract: A mixture of silicon and phosphorus are heated and reacted with halide to produce silicon tetrahalides, silicon-phosphorus halide and phosphorus trihalides compositions. These compositions are reacted with any suitable organic, inorganic-organic and/or inorganic compound to produce novel organic silicon-phosphorus containing compositions. These compositions may be utilized as flame retardants, coating agents, adhesives and many other uses.Type: GrantFiled: December 16, 1996Date of Patent: November 25, 1997Inventor: David H. Blount
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Patent number: 5625087Abstract: Catalyst systems useful in addition polymerization reactions comprising a Group 4 metal complex and a silylium salt activating cocatalyst are prepared by contacting the metal complex with a silylium salt of a compatible, non-coordinating anion, optionally the silylium salt is prepared by electrochemical oxidation and splitting of the corresponding disilane compound.Type: GrantFiled: September 12, 1994Date of Patent: April 29, 1997Assignee: The Dow Chemical CompanyInventors: David D. Devore, David R. Neithamer, Robert E. LaPointe, Robert D. Mussell
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Patent number: 5618934Abstract: The present invention is directed to a compound represented by the structural formula: ##STR1## wherein Z-- represents a negatively charged counterion.Type: GrantFiled: February 27, 1995Date of Patent: April 8, 1997Assignee: Merck & Co., Inc.Inventors: Ann E. DeCamp, Edward J. J. Grabowski, Mark A. Huffman, Lyndon C. Xavier, Nobuyoshi Yasuda, Guo-Jie Ho, David J. Mathre
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Patent number: 5468890Abstract: The invention concerns iodonium salts of the general formula A-I.sup.+ --B X.sup.-, in which A is a group of the general formula ##STR1## in which C is a monovalent aromatic hydrocarbon group with 6 to 14 carbon atoms or a monovalent aromatic hydrocarbon group containing at least one oxygen and/or sulphur atom and with 5 to 14 atoms in the aromatic ring, D, E and F are each substituents of C, D being a group of the formula --(O).sub.x --(R).sub.y --SiR1/3, E being a group of the formula --OR.sup.2, F being a group of the formula --R.sup.3, a being 1, 2, or 3, b being 0, 1 or 2, c being 0, 1 or 2, x being 0 or 1 and y being 0 or 1, and R, R.sup.1, R.sup.2 and R.sup.3 are as defined in claim 1; B is a group of the formula ##STR2## in which E and F, which are as defined above, may each be bound to the 2, 3, 4, 5 or 6 position in the benzene ring, d is 0, 1 or 2, e is 0, 1 or 2 and X.sup.- is a tosylate anion or a weakly nucleophilic or non-nucleophilic anion Y.sup.- selected from the group comprising CF.sub.Type: GrantFiled: June 8, 1994Date of Patent: November 21, 1995Assignee: Wacker-Chemie GmbHInventors: Christian Herzig, Silke Scheiding
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Patent number: 5434285Abstract: The present invention relates, by way of novel industrial products, to the phosphinite-borane compounds of the general formula ##STR1## in which R.sup.1 and R.sup.2, which are identical or different, are each a C.sub.1 -C.sub.18 -alkyl group, a C.sub.5 -C.sub.18 -cycloalkyl group, a C.sub.7 -C.sub.18 -aralkyl group or a C.sub.6 -C.sub.14 -aryl group, it being possible for each of these groups to carry functional groups, and F is a silicon containing bridging group.These products are useful in the syntheses of chiral compounds.Type: GrantFiled: October 7, 1993Date of Patent: July 18, 1995Assignee: Societe Nationale Elf AquitaineInventors: Jean A. Laffitte, Sylvain Juge, Jean P. Genet, Massoud Stephan
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Patent number: 5405982Abstract: The present invention relates to polymeric boro- and aluminosilazanes corresponding to the general formula[(SiL.sub.2).sub.a (AlL.sub.2).sub.1-a L.sub.2 ].sub.xand[(SiL.sub.2).sub.a (BL).sub.1-a L.sub.2 ].sub.x,whereina=0-1whereinL means half a bridging --NR-group, or an organoamino (--NR) group, when L is attached to a silicon or aluminum atom, and wherein L means a hydrogen atom, half a bridging --NR-- group or an organoamino (--NR) group, when L is attached to a boron atom,in which each silicon and aluminum atom is triply coordinated by four nitrogen atoms and each boron atom by at least two nitrogen and at most one hydrogen atom, a process for the preparation of these polymers and their use as precursor compounds for ceramic high performance materials.Type: GrantFiled: November 24, 1993Date of Patent: April 11, 1995Assignee: Bayer AGInventors: Josua Loffelholz, Martin Jansen
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Patent number: 5356893Abstract: The invention provides compounds of formula (I): ##STR1## or a physiologically acceptable salt or solvate thereof wherein R.sup.1 represents a halogen or hydrogen atom or a C.sub.1-6 alkyl or C.sub.1-6 alkoxy group;R.sup.2 represents a phenyl group optionally substituted by one or two substituents;R.sup.3 represents the group ##STR2## R.sup.4 and R.sup.5, which may be the same or different, each independently represent a hydrogen atom or a halogen atom, or a group selected from hydroxy, C.sub.1-6 alkoxy or C.sub.1-6 alkyl.The compounds may be used in the treatment or prophylaxis of depression and other CNS disorders.Type: GrantFiled: September 17, 1992Date of Patent: October 18, 1994Assignee: Glaxo Group LimitedInventors: John Bradshaw, John W. Clitherow, Ian B. Campbell
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Patent number: 5338875Abstract: The present invention is directed to intermediates of the following formula which are useful in the preparation of Carbapenem-antibiotics ##STR1##Type: GrantFiled: November 19, 1992Date of Patent: August 16, 1994Assignee: Merck & Co., Inc.Inventors: Ann DeCamp, Ulf H. Dolling, Yulan Li, Dale L. Rieger, Nobuyoshi Yasuda, Lyndon C. Xavier
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Silicon boron nitride ceramic and precursor compounds, a process for their preparation and their use
Patent number: 5312942Abstract: Silicon boron nitride ceramics are produced from polyborosilizanes obtained from polymerized Cl.sub.3 Si--NH--BClX wherein X is --Cl or --NH--Si--Cl.sub.3.Type: GrantFiled: May 20, 1993Date of Patent: May 17, 1994Assignee: Bayer AGInventors: Martin Jansen, Hans-Peter Baldus, Oliver Wagner -
Patent number: 5296433Abstract: Tris(pentafluorophenyl)borane complexes having the general formula (C.sub.6 F.sub.5).sub.3 B.(YXH).sub.q wherein X is oxygen, or sulfur; q is 1 to 3; Y is a hydrogen atom, R.sup.1 --, (R.sup.2).sub.3 Si--, or (R.sup.3 ).sub.2 C.dbd.N--; R.sup.1 is a hydrocarbyl group containing 1 to 500 carbon atoms, and may contain a divalent oxygen and further may be a fluorine-containing hydrocarbyl group; R.sup.2 is independently a linear or branched alkyl group containing 1 to 25 carbon atoms, or a phenyl group, further R.sup.2 may contain a SiO-- group; and R.sup.3 is independently a hydrocarbyl group containing 1 to 25 carbon atoms, R.sup.3 may be a hydrogen atom provided both R.sup.3 groups selected are not hydrogen atoms; and to complexes containing the borane complexes with an organometallic compound, either as a neutral compound or as an acidic salt that are useful as catalysts for polymerization and copolymerization of olefins and to polymeric products prepared using these catalysts.Type: GrantFiled: April 14, 1992Date of Patent: March 22, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Allen R. Siedle, William M. Lamanna
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Patent number: 5264602Abstract: This invention is concerned with new chiral diphosphinite-borane compound of the formula ##STR1## wherein R.sup.1 and R.sup.2, identical or different, represent each a C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.18 cycloalkyl, C.sub.7 -C.sub.18 aralkyl or C.sub.6 -C.sub.14 aryl group which can bear functional groups,R.sup.3 represents a C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.18 cycloalkyl, C.sub.7 -C.sub.18 aralkyl, C.sub.6 -C.sub.14 aryl, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.18 cycloalkyloxy, C.sub.7 -C.sub.18 aralkyloxy or C.sub.6 -C.sub.14 aryloxy group,Z represents a bridge linking the two phosphinite P atoms, said bridge being (i) a hydrocarbon chain having from 1 to 12 catenary C atoms or (ii) a heterohydrocarbon chain comprising from 1 to 12 catenary C atoms and at least one catenary heteroatom selected from the group consisting of O, S, Si, P and N.These chiral compounds are useful in the manufacture of chiral diphosphine compounds.Type: GrantFiled: January 9, 1992Date of Patent: November 23, 1993Assignee: Societe Nationale Elf AquitaineInventors: Sylvain Juge, Jean-Pierre Genet, Jean-Alex Laffitte, Massoud Stephan
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Patent number: 5262553Abstract: The present invention describes a novel method for crosslinking polysilazane polymers having Si--H or N--H bonds. The method comprises mixing the polysilazane with a silazane crosslinker having at least 2 boron functional groups which can react with the Si--H or N--H bonds of the polysilazane and then facilitating crosslinking.Type: GrantFiled: January 8, 1993Date of Patent: November 16, 1993Assignee: Dow Corning CorporationInventors: Duane R. Bujalski, Gregg A. Zank, Thomas D. Barnard
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Patent number: 5258229Abstract: Preceramic compositions which have particular utility in providing protective ceramic coatings on normally oxidizable materials, such as carbon/silicon carbide and other carbon-containing composites and other materials, are obtained by dispersing solid particles comprising aluminum nitride particles in an organic solvent solution of an organoborosilazane polymer obtainable by reacting about 0.25-20 parts by weight of a trialkoxy-, triaryloxy-, or tri(arylalkoxy)boroxine with one part by weight of a polysilazane in an organic solvent. Ceramic coatings derived from the dispersions may be overcoated with ceramics derived from other preceramic polysilazane compositions to provide even greater protection to the substrates.Type: GrantFiled: October 15, 1990Date of Patent: November 2, 1993Assignee: Ethyl CorporationInventors: Genevieve S. Lum, Conrad J. Langlois, Jr.
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Patent number: 5254706Abstract: Phosphite-borane compounds of the formula ##STR1## wherein: each R.sub.1 is independently selected from: H; C.sub.1 -C.sub.10 alkyl; alkylaryl; aralkyl; aryl; monovalent metal ions; nucleosides; and quaternary ammonium ions, (R.sub.4).sub.4 N.sup.+, in which the substituents R.sub.4 of the ammonium nitrogen atom are H or C.sub.1 -C.sub.10 alkyl;R.sub.2 is H or C.sub.1 -C.sub.10 alkyl; andR.sub.3 is CNCH.sub.2 CH.sub.3 .sup.+ BF.sub.4.sup.-, COOH, carboxyl salts, COOR.sub.5, or CONHR.sub.5, wherein R.sub.5 is C.sub.1 -C.sub.10 alkyl, alkylaryl, aralkyl, or aryl;with the proviso that if at least one of the R.sub.1 substituents is H, nucleoside, monovalent metal ion, or quaternary ammonium ion, then R.sub.3 may also be CN.The phosphorous-boron adducts of the invention are bioactive in character, variously exhibiting anti-tumor, anti-inflammatory, and hypolipidemic activity.Type: GrantFiled: August 31, 1992Date of Patent: October 19, 1993Assignee: Boron Biologicals, Inc.Inventors: Bernard F. Spielvogel, Anup Sood
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Silicon boron nitride ceramic and precursor compounds, a process for their preparation and their use
Patent number: 5233066Abstract: Silicon boron nitride ceramics are produced from polyborosilizanes obtained from polymerized Cl.sub.3 Si--NH--BClX wherein X is --Cl or --NH--Si--Cl.sub.3.Type: GrantFiled: February 24, 1992Date of Patent: August 3, 1993Assignee: Bayer AktiengesellschaftInventors: Martin Jansen, Hans-Peter Baldus, Oliver Wagner -
Patent number: 5201947Abstract: Preceramic compositions which have particular utility in providing protective ceramic coatings on carbon/carbon composites, graphite, carbon fibers, and other normally oxidizable materials are prepared by dispersing about 0.4-1 part by weight of a metal boride in an organic solvent solution containing one part by weight of an organoborosilazane polymer prepared by mixing about 0.25-20 parts by weight of a trialkoxy-, triaryloxy-, or tri(arylalkoxy)boroxine with a solution of one part by weight of a polysilazane in an organic solvent.Type: GrantFiled: September 29, 1989Date of Patent: April 13, 1993Assignee: Ethyl CorporationInventor: Leonard M. Niebylski
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Patent number: 5162558Abstract: Organometallic boron/nitrogen polymers, precursors of boron nitride, are prepared by reacting at least one trihalogenoborane with at least one silazane compound containing at least one .tbd.Si--NH--Si.tbd. group, by gradually introducing the silazane compound into the trihalogenoborane, while maintaining the reaction medium at a temperature ranging from -100.degree. to 0.degree. C. and wherein the ratio of the gram equivalents of the .tbd.Si--NH--Si.tbd. groups of the silazane to the number of moles of trihalogenoborane is greater than 1; the resulting organometallic polymers are facilely pyrolyzed into boron nitride ceramic materials.Type: GrantFiled: October 6, 1989Date of Patent: November 10, 1992Assignee: Rhone-Poulenc ChimieInventors: Pierre Ardaud, Maurice Charpenel, Gerard Mignani
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Patent number: 5128494Abstract: A method is provided for preparing preceramic polymers and silicious ceramic materials which derive therefrom. The preceramic polymers are polysiloxanes which are synthesized by catalytically activating Si-H bonds in a hydridosiloxane starting material and replacing the activated hydrogen atoms with non-hydrogen substituents. These preceramic polysiloxanes are pyrolyzed in a selected atmosphere to give the desired ceramic product. Ceramic products which may be prepared by this technique include silica, silicon oxynitride, silicon carbide, and metal silicates.Type: GrantFiled: April 21, 1989Date of Patent: July 7, 1992Assignee: SRI InternationalInventor: Yigal Blum
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Patent number: 5118774Abstract: Crosslinked random boron/nitrogen preceramic polymers are prepared by reacting (a) admixture of a trihalogenoborane A and a cyclic boron/nitrogen compound B containing recurring structural units of the following general formula (1): ##STR1## in which A is a halogen atom and R is a hydrogen atom, or a hydrocarbyl, organosilyl or hydrogenoorganosilyl radical, with (b) an amino compound C containing at least one --NH.sub.2 group; the resulting polymers are facilely pyrolyzed into boron nitride ceramic materials.Type: GrantFiled: January 22, 1991Date of Patent: June 2, 1992Assignee: Rhone-Poulenc ChimieInventors: Gerard Mignani, Jean-Jacques Lebrun
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Patent number: 5098747Abstract: The invention related to coating compositions containing (poly)borosiloxanes, which contain at least one other component selected from lead, boron and aluminum compounds and talc, and to a process for preparing vitreous protective coatings, which can be applied to a substrate to be protected and then heat-treated to a temperature of at least 500.degree. C.Type: GrantFiled: June 8, 1990Date of Patent: March 24, 1992Assignee: Wacker-Chemie GmbHInventors: Wilfried Kalchauer, Werner Graf, Bernd Pachaly
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Patent number: 5087715Abstract: This application relates to novel compositions of matter generally classified as alkanolaminofunctional siloxanes. These compositions have a structure selected from the group consisting of: ##STR1## wherein x represents an integer of from 1 to 100; y represents an integer of from 1 to 10; R.sup.1 represents a lower alkyl group; and M is an alkanolamino group selected from the group consisting of:--(CH.sub.2).sub.a N(R.sup.2)--(CH.sub.2).sub.b OR.sup.3 ; (c)and--(CH.sub.2).sub.a N.sup.+ (R.sup.2)(R.sup.4)--(CH.sub.2).sub.b OR.sup.3 Z.sup.-1 (d)Compositions of this invention exhibit utility in altering the surface activity of water.Type: GrantFiled: August 7, 1989Date of Patent: February 11, 1992Assignee: Dow Corning CorporationInventor: Steven A. Snow
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Patent number: 5086192Abstract: Disclosed are siloxanyl-substituted diaromatic iodonium salts such as 4-[3-1,1,3,3,5,5,5-heptamethyl siloxanyl propoxy]phenyl-phenyliodonium hexafluoroantimonate. These diaryl iodonium salts are useful as photoinitiators for epoxy containing compounds, especially epoxypolysiloxanes. Also disclosed is a process for the preparation of a siloxanyl-substituted diaromatic iodonium salt.Type: GrantFiled: December 14, 1990Date of Patent: February 4, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: Carl R. Kessel, Tracy R. Woodward
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Patent number: 5082958Abstract: Difunctional halo silicon amide compounds are prepared by cleaving the nitrogen-silicon bond in a nitrogen-silicon heterocycle with a reactive halide. The reaction is straight forward with no intermediates or byproducts. The halo functionality is capable of capping any SiOH group. When the other functionality is an acrylamide, the capped entity may be polymerized or crosslinked by free radical initiators of the acrylamide functionality thereby producing useful products such as paper release coatings and photoresists.Type: GrantFiled: January 22, 1990Date of Patent: January 21, 1992Assignee: Dow Corning CorporationInventors: Antony P. Wright, Padmakumari J. Varaprath
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Patent number: 5045399Abstract: Preceramic polymers which have particular utility in providing protective ceramic coatings on carbon/carbon composites, graphite, carbon fibers, and other normally oxidizable materials are prepared by reacting about 0.25-20 parts by weight of a trialkyl- or trialkoxyboroxine in which the alkyl or alkoxy groups contain 1-6 carbons with one part by weight of a poly-silazane to form an organoborosilazane polymer.Type: GrantFiled: September 9, 1988Date of Patent: September 3, 1991Assignee: Ethyl CorporationInventor: Leonard M. Niebylski
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Patent number: 5039711Abstract: Stable flame-retardant polyol-oxidated silicon-acidic boron emulsions are produced by mixing and reacting a liquid organic polyol, and oxidated silicon compound and an acidic boron compound. This flame-retardant emulsion is useful in the production of flame-retardant polyurethane, polyester and polyesteramide products.Type: GrantFiled: September 25, 1989Date of Patent: August 13, 1991Inventor: David H. Blount
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Patent number: 5030744Abstract: Disclosed is a polyborosilazane having a B/Si atomic ratio of 0.01 to 3 and a number-average molecular weight of about 200 to about 500,000 which can be pyrolyzed to give ceramics. The polyborosilazane is produced by reacting a polysilazane having a number-average molecular weight of about 100 to about 50,000 with a boron compound.Type: GrantFiled: January 18, 1990Date of Patent: July 9, 1991Assignee: Tonen CorporationInventors: Osamu Funayama, Mikiro Arai, Yuuji Tashiro, Takeshi Isoda, Kiyoshi Sato
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Patent number: 4987201Abstract: The present invention relates to a process for the production of an organoborosilicon preceramic polymer of the structure: ##STR1## wherein R.sup.1 is selected from alkyl having from 1 to 10 carbon atoms or phenyl, and x is selected from 0, 1, 2 or 3;which is pyrolyzable to produce a refractory material comprising inorganic compounds of Si, C and B, which process comprises:contacting a silicon containing compound of the structure:(R.sup.1).sub.x --Si (CH.dbd.CH.sub.2).sub.4-x or (R.sup.1).sub.x Si(C.dbd.CH).sub.4-xwith a boron containing compound selected from H.sub.3 B:BH.sub.3, H.sub.3 B:NH.sub.3, BH.sub.3 :N(R.sup.2).sub.3 wherein R.sup.2 is selected from methyl, ethyl, propyl, butyl or phenyl in an inert atmosphere at a temperature of between about 90.degree. and 170.degree. C. for between about 0.1 and 20 hr and recovering the prepolymer. The prepolymer is pyrolyzed to produce a ceramic article useful in high temperature (e.g., aerospace) or extreme environmental applications.Type: GrantFiled: June 5, 1989Date of Patent: January 22, 1991Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Salvatore R. Riccitiello, Ming-ta S. Hsu, Timothy S. Chen
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Patent number: 4873353Abstract: Preceramic compositions which have particular utility in providing protective ceramic coatings on carbon/carbon composites, graphite, carbon fibers, and other normally oxidizable materials are prepared by mixing about 0.25-20 parts by weight of a trialkoxy-, triaryloxy-, or tri(arylalkoxy)boroxine with one part by weight of a polycarbosilane in an organic solvent.Type: GrantFiled: February 6, 1989Date of Patent: October 10, 1989Assignee: Ethyl CorporationInventor: Leonard M. Niebylski
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Patent number: 4851491Abstract: The present invention relates to a polyorganoborosilane ceramic precursor polymer comprising a plurality of repeating units of the formula: ##STR1## with the segments being linked together by second units of the formula: --[(R.sup.2)--Si--R.sup.3)--q, where R.sup.1 is lower alkyl, cycloalkyl, phenyl, or ##STR2## and R.sup.2 and R.sup.3 are each independently selected from hydrogen, lower alkyl, vinyl, cycloalkyl, or aryl, n is an integer between 1 and 100; p is an integer between 1 and 100; and q is an integer between 1 and 100. These materials are prepared by combining an organoborohalide of the formula R.sup.4 --B--(X.sup.1).sub.2 where R.sup.4 is selected from halogen, lower alkyl, cycloalkyl, or aryl, and an organohalosilane of the formula: R.sup.2 (R.sup.3) Si(X.sup.2).sub.2 where R.sup.2 and R.sup.3 are each independently selected from lower alkyl, cycloalkyl, or aryl, and X.sup.1 and X.sup.Type: GrantFiled: August 11, 1988Date of Patent: July 25, 1989Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Salvatore R. Riccitiello, Ming-Ta S. Hsu, Timothy S. Chen
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Patent number: 4837348Abstract: The invention relates to the functionalization of particulate bonded phase chromatographic supports prepared by silanization of silica gel or controlled pore glass and containing pendant primary alkyl amine groups. Functionalization results from the activation of the amines by reaction with N,N'-carbonyldiimidazole (CDI), or a related azolide, in anhydrous organic solvent, followed by derivatization of the support. Derivatization results from reaction of the activated support with a functionalizing reagent consisting of a primary or secondary, alkyl or aryl amine in organic solvent, or from an aqueous solution of the amine or its salt. A urea linkage results through which the functionalizing reagent is covalently attached to the support. Derivatization can result from the addition of an excess of a single reagent, or as a consequence of the sequential addition of two or more functionalizing reagents.Type: GrantFiled: April 30, 1986Date of Patent: June 6, 1989Assignee: Varian Associates, Inc.Inventors: Mark L. Stolowitz, Amy G. Taketomo
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Patent number: 4767728Abstract: The present invention relates to a polyorganoborosilane ceramic precursor polymer comprising a plurality of repeating units of the formula: ##STR1## with the segments being linked together by second units of the formula: --(R.sup.2)--Si--R.sup.3)--q, where R.sup.1 is lower alkyl, cycloalkyl, phenyl, or ##STR2## and R.sup.2 and R.sup.3 are each independently selected from hydrogen, lower alkyl, vinyl, cycloalkyl, or aryl, n is an integer between 1 and 100; p is an integer between 1 and 100; and q is an integer between 1 and 100. These materials are prepared by combining an organoborohalide of the formula R.sup.4 -B-(X.sup.1).sub.2 where R.sup.4 is selected from halogen, lower alkyl, cycloalkyl, or aryl, and an organohalosilane of the formula : R.sup.2 (R.sup.3) Si(X.sup.2).sub.2 where R.sup.2 and R.sup.3 are each independently selected from lower alkyl, cycloalkyl, or aryl, and X.sup.1 and X.sup.Type: GrantFiled: July 30, 1986Date of Patent: August 30, 1988Assignee: The United States of America as represented by the United States National Aeronautics and Space AdministrationInventors: Salvatore R. Riccitiello, Ming-Ta S. Hsu, Timothy S. Chen
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Patent number: 4647555Abstract: Ester analogues of boron analogues of amino acid are disclosed. Also disced is a method of forming the ester analogues in high yield by condensation of the corresponding acids and alcohols with dicylohexylcarbodiimide at room temperature in dichloromethane. The disclosed compounds have shown interesting biological activities, in particular, hypolipidemic activity as well as significant antitumor and antiarthritic activities.Type: GrantFiled: October 25, 1984Date of Patent: March 3, 1987Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Bernard F. Spielvogel, Andrew T. McPhail, Iris H. Hall
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Patent number: 4405802Abstract: Chiral boron enolates are provided having the formulae: ##STR1## wherein R.sub.2 B is 9-borobicyclo[3.3.1]non-9-yl(BBN) or R is n-butyl, cyclopentyl, or another alkyl group.The boron enolates can be condensed with aldehydes to produce aldol stereospecific product which includes a .beta.-hydroxy-.alpha.-methyl carbonyl unit in the product structure.Type: GrantFiled: February 22, 1982Date of Patent: September 20, 1983Assignee: Massachusetts Institute of TechnologyInventors: Satoru Masamune, William Choy
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Patent number: 4339339Abstract: The invention relates to a liquid non-vulcanizable polysiloxane and boron compound for use for hydrostatically damping and shock absorbing mechanical energy in apparatus of various types, as for instance in bump stops for elevators and overhead jib cranes, fenders for vehicles and the like. The composition for mechanical energy absorption comprises boro siloxane polymers, fillers, pigments and alkyl-aryl-siloxane oils.Type: GrantFiled: February 24, 1981Date of Patent: July 13, 1982Inventor: Jeremi Maciejewski