Plural Silicons Bonded Directly To The Same Or Different Benzene Rings That Form All Or Part Of The Chain Patents (Class 556/432)
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Patent number: 7244518Abstract: Anthracene compounds and organic electroluminescent devices employing the same. Anthracene compounds can serve as host materials for an blue organic electroluminescent device. Furthermore, the anthracene compounds can also serve as hole transport layer materials or electron transport layer materials for organic electroluminescent devices, by way of the silyl phenyl group thereof.Type: GrantFiled: January 6, 2005Date of Patent: July 17, 2007Assignee: AU Optronics Corp.Inventors: Chen-Ping Yu, Wen-Kuen Chen
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Patent number: 7233019Abstract: This invention relates to electroluminescent silylated pyrene compounds. It also relates to electronic devices in which the active layer includes an electroluminescent silylated pyrene compound.Type: GrantFiled: April 26, 2004Date of Patent: June 19, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Alex Sergey Ionkin, Ying Wang
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Patent number: 6830833Abstract: Fused conjugated polymers having the following general formula wherein X=C or N; R1-R16 is independently selected from H, D, alkyl, alkoxyl, silyl, aromatic ring, fused aromatic ring, heteroaromatic ring, fused heteroaromatic ring, diarylamino group, carbazole, and at least one of them being a crosslinkable group consisting of a vinyl double bond or an azide group are useful in the fabrication of organic light emitting devices.Type: GrantFiled: December 3, 2002Date of Patent: December 14, 2004Assignee: Canon Kabushiki KaishaInventor: Xiao-Chang Charles Li
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Patent number: 6808826Abstract: A blue electroluminescence compound for an electroluminescence display device comprising a spirobifluorene or triarylsilylphenyl group and a display device using such a blue electroluminescence compound, thereby improving a light emitting efficiency and brightness of the electroluminescence display device.Type: GrantFiled: May 23, 2001Date of Patent: October 26, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Sung Han Kim, Han Sung Yu, Soon Ki Kwon, Yun Hi Kim, Dong Cheol Shin, Hyun Wook Lee, Hyun Cheol Jeong
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Publication number: 20040106004Abstract: Spiro-type conjugated polymers having the following general formula 1Type: ApplicationFiled: December 3, 2002Publication date: June 3, 2004Applicant: Canon Kabushiki KaishaInventor: Xiao-Chang Charles Li
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Patent number: 6743916Abstract: A process for producing an organotitanium compound capable of regioselectively converting a substituted acetylene compound into polysubstituted benzene or polysubstituted pyridine. The process comprises reacting an acetylene compound represented by the formula (1) [where R1 and R2 denote a C1-20 alkyl group or the like] in the presence of a prescribed titanium compound and a Grignard reagent with a compound represented by the formula (4) [where R3 and R4 denote a hydrogen atom or the like] and further reacting with a compound represented by the formula (5) [where R5 denotes a hydrogen atom or the like, Z denotes CR′ (where R′ denotes a hydrogen atom or the like), nitrogen atom, X6 denotes a halogen atom or the like, and m is 0 or 1] thereby giving the titanium compound represented by the formula (6) and/or (7).Type: GrantFiled: December 13, 2001Date of Patent: June 1, 2004Assignees: Nissan Chemical Industries, LtdInventor: Fumie Sato
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Patent number: 6709772Abstract: An organic electrically conductive compound represented by general formula (1): and an organic electroluminescent device using the compound are provided, wherein n is an integer from 1 to 10, k represents any of integers from 2 to n+1, Ar1, Ar1′, Ar2, and Ar2′ are substituted or non-substituted aromatic hydrocarbon rings or heterocyclic rings that share a bond between carbons at 2,3-positions or 4,5-positions of a pyrrole ring in general formula (1) and are fused with the pyrrole ring, respectively, Ar3 is a divalent group of a substituted or non-substituted aromatic hydrocarbon or heterocyclic compound, and R1, R1′, Rk, and Rk′ are aliphatic hydrocarbon groups or substituted or non-substituted aryl or heterocyclic groups, respectively.Type: GrantFiled: September 27, 2002Date of Patent: March 23, 2004Assignee: Mitsumi Electric Co., Ltd.Inventors: Norio Hasegawa, Akira Shiga, Youichi Itagaki
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Publication number: 20020055013Abstract: A blue electroluminescence compound for an electroluminescence display device comprising a spirobifluorene or triarylsilylphenyl group and a display device using such a blue electroluminescence compound, thereby improving a light emitting efficiency and brightness of the electroluminescence display device.Type: ApplicationFiled: May 23, 2001Publication date: May 9, 2002Inventors: Sung Han Kim, Han Sung Yu, Soon Ki Kwon, Yun Hi Kim, Dong Cheol Shin, Hyun Wook Lee, Hyun Cheol Jeong
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Publication number: 20020016487Abstract: The present invention relates to compounds of the formula 1Type: ApplicationFiled: February 27, 2001Publication date: February 7, 2002Inventors: Francois Kayser, Wolfgang Lauer, Thierry Florent Edme Materne
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Patent number: 6323355Abstract: 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: GrantFiled: February 20, 2001Date of Patent: November 27, 2001Assignee: Fuji Photo Film Co., Ltd.Inventor: Tatsuya Igarashi
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Patent number: 6312839Abstract: A blue-light emitting compound having fluorene side chains and an organic electroluminescence (EL) device adopting the blue-light emitting compound as a color developing substance. The blue-light emitting compound with fluorene side chains has the formula (1) The compound having the formula (1) hereinabove, as a blue light-emitting substance, is useful as a color developing substance for a display device with improved emission efficiency. The organic EL device adopts the compound having the formula (1) for its organic layer, for example, the emitter layer, which results in improved emission efficiency and luminance, compared to common blue light-emitting compounds.Type: GrantFiled: May 10, 2000Date of Patent: November 6, 2001Assignee: Samsung Display Devices Co., Ltd.Inventors: Dong-hyun Kim, Han-sung Yu, Soon-ki Kwon, Dong-cheol Shin, Yun-hi Kim
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Patent number: 6232001Abstract: 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: GrantFiled: April 27, 1999Date of Patent: May 15, 2001Assignee: Fuji Photo Film Co., Ltd.Inventor: Tatsuya Igarashi
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Patent number: 6127565Abstract: The following class of glycidyl and allyl ethers are found to cure at room temperature much faster than their glycidyl and allyl analogs: ##STR1## where: R.sub.1 is selected from the group consisting of:(a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms; and(b) a group having the formula ##STR2## wherein n=1 to 3,m=0 to 5R.sub.2 and R.sub.2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group, and R.sub.Type: GrantFiled: December 4, 1998Date of Patent: October 3, 2000Assignee: Raytheon CompanyInventor: T. Kirk Dougherty
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Patent number: 5917075Abstract: The hydrolyzable and polymerizable silanes have the formula I, ##STR1## wherein X is hydrogen, a halogen, a hydroxy, an alkoxy group, an acyloxy oup, an alkylcarbonyl group, an alkoxycarbonyl group or --NR.sup.2.sub.2 group; wherein R.sup.Type: GrantFiled: December 22, 1997Date of Patent: June 29, 1999Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung, e.V.Inventor: Herbert Wolter
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Patent number: 5864000Abstract: This invention relates to a hybrid phenolic/polysiloxane resin derivable by (A) reacting a phenolic compound with (a) a siloxane polymer or (b) an aldehyde and (B) reacting the reaction product of stage (A)(a) with an aldehyde, or, (A)(b) with a siloxane polymer to form the hybrid phenolic/polysiloxane resin, said resin having a siloxane content of 1-40% by weight of the total hybrid resin and a viscosity in the range of 100-10000 mPa s. The products derived from the hybrid resins of the present invention have enhanced impact strength; can tolerate higher burst pressures in pipe applications, have improved resistance to hydrolysis and other environmental weathering characteristics; have improved fire stability; and show improved film flexibility in coatings.Type: GrantFiled: September 19, 1997Date of Patent: January 26, 1999Assignee: Blagden Chemicals LimitedInventors: Alan William Lightbody, John Edwar Jones, Murray Roy Orpin
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Patent number: 5726336Abstract: Polyalkylated benzenes containing chlorosilyl groups represented by formula III ##STR1## wherein R.sub.1 represents hydrogen or alkyl; R.sub.2 represents hydrogen or alkyl; R' represents methyl or chloro; and n=3-6.Type: GrantFiled: November 29, 1996Date of Patent: March 10, 1998Assignee: Korea Institute of Science and TechnologyInventors: Il Nam Jung, Joon Soo Han, Eun Jeong Cho, Bok Ryul Yoo
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Patent number: 5719251Abstract: Organosilicon compounds are described which contain a cyclic organic moiety between at least two reactive silane groups. The compounds are useful in coatings, adhesives, and sealants, and the like.Type: GrantFiled: August 26, 1996Date of Patent: February 17, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: Lech Wilczek, Idisor Hazan, Basil V. Gregorovich
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Patent number: 5717125Abstract: The invention includes hydrolyzable and polymerizable silanes, methods of making them and using them to obtain silicic acid(hetero)polycondensates and silicic acid(hetero)polymerizates. The hydrolyzable and polymerizable silanes have the formula I, ##STR1## wherein A=O, S, NH or C(O)O;whereinB=a straight chain or branched organic residue with at least one C.dbd.C double bond and from 4 to 50 carbon atoms;R is an alkyl group, alkenyl group, aryl group, alkylaryl group or an arylalkyl group;R' is a substituted or unsubstituted alkylene group, arylene group, arylenealkylene group or alkylenearylene group each having zero to ten carbon atoms, with the proviso that the substituted groups each have at least one oxygen atom, sulfur atom and/or amine group substituent;R.sup.Type: GrantFiled: May 11, 1995Date of Patent: February 10, 1998Assignee: Fraunhofer-Gesellschaft Zur Forderung Der AngewandtenInventors: Herbert Wolter, Werner Storch
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Patent number: 5691433Abstract: A silicon-containing polymer comprising a structural unit of the formula (1): ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and represent a monovalent organic group having 1 to 20 carbon atoms, and the benzene ring may have a substituent, which has good heat resistance.Type: GrantFiled: March 28, 1996Date of Patent: November 25, 1997Assignee: Kanegafuchi Chemical Industry Co., Ltd.Inventors: Jun Kotani, Manabu Tsumura, Takahisa Iwahara, Toshifumi Hirose
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Patent number: 5679818Abstract: The present invention is a compound having the formula:R.sup.1 --Ac.sup.1 --Ar.sup.1 --M--Ar.sup.2 --Ac.sup.2 --R.sup.2where R.sup.1 and R.sup.2 are independently selected from the group consing of hydrogen, unsubstituted alkyl groups, substituted alkyl groups, unsubstituted aryl groups, and substituted aryl groups, where Ac.sup.1 and Ac.sup.2 are independently selected alkynyl groups having at least 1 carbon-carbon triple bond, where Ar.sup.1 and Ar.sup.2 are independently selected substituted or unsubstituted aromatic diradicals, and where M has the structure ##STR1## where m is a positive integer, wherein x, p, y, r, n, and z are independently selected integers, where z.noteq.0 when n.noteq.0, and where R.sup.3 through R.sup.14 are independently selected from the group consisting of hydrogen, unsubstituted alkyl groups, substituted alkyl groups, unsubstituted aryl groups, and substituted aryl groups.Type: GrantFiled: July 26, 1996Date of Patent: October 21, 1997Assignee: The United States of America as represented by the Secretary of the NavyInventors: Daniel Bucca, Teddy M. Keller
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Patent number: 5616754Abstract: In order to reduce the rate of coke formation during the industrial pyrolysis of hydrocarbons, the interior surface of a reactor is coated with a thin layer of a ceramic material, the layer being deposited by thermal decomposition of a non-oxygen containing silicon-nitrogen precursor in the vapor phase, tin an inert or reducing gas atmosphere in order to minimize the formation of oxide ceramics.Type: GrantFiled: January 26, 1995Date of Patent: April 1, 1997Assignee: Enichem S.p.A.Inventors: Richard Cruse, Veronika Szalai, Terence Clark, Stephen Rohman, Robert Mininni
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Patent number: 5596117Abstract: A process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst. A process for the preparation of polyalkenylsilanes (some of which are novel high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes. A process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.Type: GrantFiled: February 3, 1995Date of Patent: January 21, 1997Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Masayoshi Itoh, Ryo Takeuchi, Kenji Iwata
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Patent number: 5548051Abstract: Single component inorganic/organic network materials incorporating the physical properties of glasses with the flexibility of organic materials of empirical formula X(SiO.sub.1.5).sub.n wherein X is one or more flexible organic linkages and n is greater than or equal to 2, as well as precursors thereof, are disclosed.Type: GrantFiled: August 7, 1995Date of Patent: August 20, 1996Assignee: E. I Du Pont de Nemours and CompanyInventors: Michael J. Michalczyk, Kenneth G. Sharp
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Patent number: 5523442Abstract: Fluorinated silylated aromatic compounds, their intermediates, methods of use in treating diseases associated with deficiencies of cholinergic transmission in the central nervous system and methods for their preparation are disclosed.Type: GrantFiled: July 18, 1995Date of Patent: June 4, 1996Assignee: Merrell Pharmaceuticals Inc.Inventors: Jean-Noel Collard, Jean-Marie Hornsperger
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Patent number: 5386048Abstract: The invention provides silicon substituted fullerene compounds. The compounds can form polymers or wrapped fullerenes. The compounds may be made by reacting an organo-silicon compound with a fullerene in the presence of a catalyst by a hydrosilylation reaction.Type: GrantFiled: November 24, 1993Date of Patent: January 31, 1995Assignee: Wisconsin Alumni Research FoundationInventors: Robert C. West, Kunio Oka
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Patent number: 5359101Abstract: Anionically polymerizable monomers containing at least one silicon or titanium atom form polymeric photoresists having good dry etch resistance for use in microlithography. The monomers are of the formula ##STR1## wherein A is --H or --CH.dbd.CH.sub.2 ; X is a strong electron withdrawing group;Y is a strong electron withdrawing group containing at least one silicon or titanium atom.Preferably Y is ##STR2## wherein n is 1-5 and R.sup.2, R.sup.3 and R.sup.4 are C.sub.1 -C.sub.10 alkyl. A particularly preferred monomer is 3-trimethylsilylpropyl 2-cyanoacrylate.Methods for applying a resist coating by vapor deposition of these monomers and exposure to radiation are described. A positive or negative tone image can be produced, depending upon the imaging method employed. The imaging layer may be applied over a planarizing layer to form a multilayer photoresist.Type: GrantFiled: October 1, 1991Date of Patent: October 25, 1994Assignee: Loctite Ireland, Ltd.Inventors: John Woods, Pauline Coakley
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Patent number: 5342982Abstract: Silicon-containing organic compounds useful as starting materials of functional polymer materials, as well as a process for preparing the same, are provided. The silicon-containing organic compounds are represented by the following general formula: ##STR1## where R.sup.1 is a .pi. conjugated type divalent organic group having 2 to 30 carbon atoms, R.sup.2 is a hydrocarbon group having 1 to 30 carbon atoms, X.sup.1 is a halogen atom, m and n satisfy the conditions of 1.ltoreq.m.ltoreq.2 and n.gtoreq.2, respectively. A compound of the above general formula is prepared by reacting an organometallic compound of the following general formula:M.sup.1 -R.sup.1 -M.sup.2where M.sup.1 and M.sup.2 are each a metal selected from Group 1, 2 and 12 metals in the Periodic Table, with a silane compound of the following general formula: ##STR2## where R.sup.2 is a hydrocarbon group having 1 to 30 carbon atoms, X.sup.1, X.sup.2 and X.sup.3 are each a halogen atom.Type: GrantFiled: June 24, 1993Date of Patent: August 30, 1994Assignee: Nippon Oil Company, LimitedInventors: Masaki Minami, Keizo Ikai, Mitsuo Matsuno
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Patent number: 5244733Abstract: A polysilylethylene arylene polymer having an alkoxy or aryloxy group as a side chain substituent is used to form optical fiber cores which do not significantly increase their light transmission loss under an external pressure applied thereto even when exposed to a humid condition.Type: GrantFiled: April 24, 1992Date of Patent: September 14, 1993Assignee: Shin-Etsu Chemical Company, LimitedInventors: Shohei Kozakai, Tomiya Abe
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Patent number: 5229481Abstract: Polymer materials are described, which are formed by polymerization of monomer mixtures containing at least one compound of the formula I(RH.sub.2 Si).sub.x A (I)wherein R is selected from the group consisting of hydrogen, unsubstituted alkyl, substituted alkyl, unsubstituted aryl and substituted aryl; A is a polyvalent moiety; and x is 2-4. Methods for preparation of polymers derived from monomer mixtures consisting essentially of polyvalent polysilanes, as well as mixtures of polysilanes with monovalent monosilanes, are also described.Type: GrantFiled: March 28, 1991Date of Patent: July 20, 1993Assignee: The Regents of the University of CaliforniaInventor: T. Don Tilley
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Patent number: 5204454Abstract: Prepolymer polyols containing mesogenic moieties useful as reactants for the preparation of resinous materials are disclosed. Synthesized by condensing a polyether polyol with bifunctional mesogenic diacids, or diesters, the compounds of the invention are characterized by their reasonably low melt temperature which renders them suitable as additive materials in polymeric molding compositions and as precursors for the preparation of resinous materials.The liquid crystalline properties of the prepolymers of the invention were found to depend on the type and molecular weight of the glycols and on the molar ratio between the glycols and the mesogenic reactant.Type: GrantFiled: July 19, 1991Date of Patent: April 20, 1993Assignee: Miles Inc.Inventors: Randall A. Rodenhouse, Dittmar K. Nerger, Douglas A. Wicks
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Patent number: 5113003Abstract: The silicon-containing phenoxy ethers are of the formula III: ##STR1## wherein R.sup.1 and R.sup.2 which may be the same or different are selected from H, --R.sup.3 --X, aliphatic hydrocarbyl having 1-6 carbon atoms or aryl, or substituted derivatives thereof, provided that not more than one of R.sup.1 and R.sup.2 is H;R.sup.3 is a divalent C.sub.1 -C.sub.30 aliphatic and/or aromatic hydrocarbyl group which may optionally be substituted, or interrupted, by a hetero atom;R.sup.4 and R.sup.5 which may be the same or different are H, ##STR2## or an ortho para directing activating group for aromatic electrophilic substitution, other than an amine;and X is a reactive functional group capable of undergoing an acid-catalyzed electrophilic aromatic substitution reaction with a phenol, for example an aldehyde group. They can be polymerized to produce silicone-modified polymers of the phenol-aldehyde type without the use of free aldehyde.Type: GrantFiled: March 20, 1991Date of Patent: May 12, 1992Assignee: Loctite (Ireland) LimitedInventors: John G. Woods, Pauline Coakley
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Patent number: 4985576Abstract: A bisindenyl derivate of the formula I ##STR1## (M.sup.1 =Si or Ge, R.sup.6 and R.sup.7 =unsubstituted or substituted idenyl radical)is obtained in very good yield by reacting a compound of the formula II ##STR2## (X=halogen) with a compound of the formula III or IVR.sup.6 -M.sup.2 (III) R.sup.7 -M.sup.2 (IV)(M.sup.2 =alkali metal)if, in the reaction, compound III or IV is added slowly to compound II.Compound I is suitable as a starting material for the preparation of metallocene catalyst components.Type: GrantFiled: December 29, 1989Date of Patent: January 15, 1991Assignee: Hoechst AktiengesellschaftInventors: Jurgen Rohrmann, Martin Antberg
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Patent number: 4982006Abstract: The present invention involves process for the preparation of compounds having the chemical structure: ##STR1## wherein Ar--H is an aromatic compound which is activated to an electrophilic attack, and wherein --Y is an aliphatic group having a labile moiety, especially where the labile moiety is a terminally unsaturated moiety: --C.tbd.CH, ##STR2## or aldehydes in the form of their acetals. The process comprises the step of reacting Ar--H and ##STR3## wherein --X is --Cl or --Br, and where the reaction step is carried out in a solvent medium at a temperature of from about -40.degree. C. to about -100.degree. C. using stannic chloride as a catalyst.Type: GrantFiled: May 1, 1989Date of Patent: January 1, 1991Assignee: Norwich Eaton Pharmaceuticals, Inc.Inventor: Thomas T. Hudec
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Patent number: 4918197Abstract: A method is provided for silylating aromatic acylhalide by effecting reaction between an aromatic acylhalide and halogenated polysilane in the presence of an effective amount of a supported transition metal catalyst, such as a transition metal catalyst supported by an organic or inorganic substrate.Type: GrantFiled: August 15, 1988Date of Patent: April 17, 1990Assignee: General Electric CompanyInventors: Jonathan D. Rich, Terry E. Krafft, Philip J. McDermott
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Patent number: 4861901Abstract: A new group of silane compounds in which silicon atoms are linked together by a hydrocarbon chain and which comprise phenyl groups substituted with an epoxy group or an ethenyl group. The compounds of the present invention have the formula ##STR1## where R.sub.1 is selected from the group consisting of:(a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms, and(b) a group having the formula ##STR2## where n=1 to 3m=0 to 5;R.sub.2 and R.sub.2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group;and R.sub.3 is selected from the group consisting of: ##STR3## where R.sub.4, R.sub.5, and R.sub.6 are each selected from the group consisting of H, an alkyl group containing 1 to 4 carbon atoms, and an aryl group; and n=0 to 10.Type: GrantFiled: May 5, 1987Date of Patent: August 29, 1989Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Susan L. Oldham, William E. Elias, Stephen J. Bigus
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Patent number: 4798903Abstract: Optically active 3,3'-disilylbinaphthol derivatives are disclosed, which are represented by a general formula (I) ##STR1## (wherein, R.sup.1, R.sup.2 and R.sup.3 indicate mutually same or different lower alkyl groups and/or aromatic groups), and the steric configuration of which is R form or S form.Type: GrantFiled: February 25, 1988Date of Patent: January 17, 1989Assignee: Toyo Stauffer Chemical Co., Ltd.Inventors: Hisashi Yamamoto, Keiji Maruoka
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Patent number: 4739089Abstract: A method for making certain silylaryl ketones is provided by acylating a silarylene with an arylacyl halide in the presence of a Friedel-Crafts catalyst. Silicon containing arylketones are also provided.Type: GrantFiled: February 24, 1987Date of Patent: April 19, 1988Assignee: General Electric CompanyInventor: Peter P. Policastro
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Patent number: 4709054Abstract: A method is provided for silylating organic substrates, utilizing a halogenated polysilane, such as 1,1,2,2-tetrachloro dimethyldisilane and an aromatic acyl halide, for example, trimellitic anhydride acid chloride in the presence of a transition metal catalyst.Type: GrantFiled: August 13, 1985Date of Patent: November 24, 1987Assignee: General Electric CompanyInventor: Jonathan D. Rich
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Patent number: 4704444Abstract: A polyhydridosilane has a catenated silicon backbone of 9 to 4000 silicon atoms with an average number of hydrogen atoms per silicon atom in the range of 0.3 to 2.2, at least 0.1 gram of the polyhydridosilane being soluble at 20.degree. C. in 100 grams of tetrahydrofuran, toluene, or methylene chloride. The polyhydridosilane can be derivatized or it can be converted to a pyropolymer or a nitrogen-containing pyropolymer which is useful as an abrasive, ceramic, electrical, or electro-optical material.Type: GrantFiled: May 20, 1986Date of Patent: November 3, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Katherine A. Brown-Wensley, Robert A. Sinclair
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Patent number: 4676966Abstract: The invention provides a novel method for the preparation of a finely divided powder of silicon carbide as a promising material for sintered ceramic products of silicon carbide. The method comprises vapor-phase pyrolysis of a vaporizable organosilicon compound having, in a molecule, at least two, e.g. 2, 3 or 4, silicon atoms and at least one hydrogen atom directly bonded to the silicon atom but having no oxygen or halogen atom directly bonded to the silicon atom at a temperature of 750.degree. C. or higher.Type: GrantFiled: February 27, 1985Date of Patent: June 30, 1987Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Morinobu Endo, Minoru Takamizawa, Tatsuhiko Hongu, Taishi Kobayashi
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Patent number: 4611035Abstract: A polyhydridosilane has a catenated silicon backbone of 9 to 4000 silicon atoms with an average number of hydrogen atoms per silicon atom in the range of 0.3 to 2.2, at least 0.1 gram of the polyhydridosilane being soluble at 20.degree. C. in 100 grams of tetrahydrofuran, toluene, or methylene chloride. The polyhydridosilane can be derivatized or it can be converted to a pyropolymer or a nitrogen-containing pyropolymer which is useful as an abrasive, ceramic, electrical, or electro-optical material.Type: GrantFiled: May 1, 1985Date of Patent: September 9, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventors: Katherine A. Brown-Wensley, Robert A. Sinclair
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Patent number: 4537942Abstract: A polyhydridosilane has a catenated silicon backbone of 9 to 4000 silicon atoms with an average number of hydrogen atoms per silicon atoms in the range of 0.3 to 2.2, at least 0.1 gram of the polyhydridosilane being soluble at 20.degree. C. in 100 grams of tetrahydrofuran, toluene, or methylene chloride. The polyhydridosilane can be derivatized or it can be converted to a pyropolymer or a nitrogen-containing pyropolymer which is useful as an abrasive, ceramic, electrical, or electro-optical material.Type: GrantFiled: April 6, 1984Date of Patent: August 27, 1985Assignee: Minnesota Mining and Manufacturing CompanyInventors: Katherine A. Brown-Wensley, Robert A. Sinclair
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Patent number: 4513137Abstract: Mono- or bis(iodonium salts) are produced in neutral organic solvents by the reaction of an [hydroxy (organosulfonyloxy)iodo]arene with a bis(triorganosilyl)arene, a bis(trihalosilyl)arene, or with a mono- or bis(triorganosilyl)heterocyclic compound, or a mono- or bis(trihalosilyl)heterocyclic. The iodonium salts are made under conditions of regiospecific control.Type: GrantFiled: April 9, 1981Date of Patent: April 23, 1985Assignee: The University of AkronInventors: Gerald F. Koser, Carol S. Carman