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| Number | Title | Issue Date |
| 7709672 | Method for obtaining halogenated monoorganoxysilanes useful in particular as synthesis intermediates The invention concerns the preparation of halogenated monoorganoxysilanes, of formula (I), said compounds being useful as synthesis intermediate in organic chemistry. Said method for preparing monoorganoxysilanes consists in: using as starting product halogenoalkyls... | 05/04/2010 |
| 7456308 | Grignard processes with improved yields of diphenylchlorosilanes as products A Grignard process for preparing phenyl-containing chlorosilane products, in particular diphenylchlorosilanes, is carried out in three embodiments. In the first embodiment, the reactants of the Grignard process are a phenyl Grignard reagent, an ether solvent, a tric... | 11/25/2008 |
| 7351847 | Grignard processes with increased content of diphenylchlorosilanes Three improved Grignard processes are used for preparing phenyl-containing chlorosilane products wherein the yield of diphenylchlorosilanes as a product is maximized, while the yield of phenylchlorosilanes as a product is minimized. In one embodiment, the process in... | 04/01/2008 |
| 7211534 | Preparation of a magnesium halide support for olefin polymerization and a catalyst composition using the same A magnesium halide support material for a polyolefin catalysts is disclosed. The magnesium halide of present invention is prepared by reacting magnesium with an alkylhalide in a non-polar hydrocarbon solvent. Preparation of the support does not require the use elect... | 05/01/2007 |
| 7084206 | Process for preparing phenylorganosilicon intermediates A method for preparing phenyl-containing organosilicon intermediates using an aromatic halogenated solvent during the coupling reaction involving a phenyl Grignard reagent and a precursor silane. The process comprises contacting a phenyl halide with magnesium in a s... | 08/01/2006 |
| 7030260 | Preparation of mixed-halogen halo-silanes The preparation of halosilanes having mixed-halogen substituents is described comprising providing an aryl-halo-silane having one more first halogens and one or more aryl groups, and substituting one or more of said aryl groups of said aryl-halo-silane with a second... | 04/18/2006 |
| 6984747 | Method for preparing styryl-functionalized silanes The invention relates to a method for preparing silanes comprising styryl groups, said silanes being represented by the general formula (I): (St)bSiR′aR4−a−b with improved yields through a reaction with magn... | 01/10/2006 |
| 6777570 | Process for producing norbornene derivative having organosilyl group A process for producing a norbornene derivative having an organosilyl group suitable as a synthetic intermediate for pesticides and medicaments and for production of polyolefin polymers, particularly polyolefin polymers having a good adhesiveness with metals or insu... | 08/17/2004 |
| 6730802 | Silicon carbide precursor The compound 2,4,6-trimethyl-2,4,6-trisila heptane, the preparation thereof, and the use thereof as a silicon carbide precursor in chemical vapor deposition and infiltration procedures are disclosed. ... | 05/04/2004 |
| 6686492 | Preparation of organosilicon intermediate and their derivatives in a novel grignard process A one-step process for the preparation of organosilicon intermediates. The organosilicon intermediates comprise a group which includes such intermediates as 1,4-bis(dimethylsilyl)benzene, 1,4-bis(dimethylchlorosilyl)benzene, and their derivatives. The pro... | 02/03/2004 |
| 6541651 | Process for chlorosilane intermediates manufacture Processes for the preparation of phenyl Grignard reagents in co-solvents of toluene and ether and, the preparation of phenylchlorosilane intermediates using co-solvents of toluene and ether essentially in a one step process. The phenylchlorosilanes in the... | 04/01/2003 |
| 6465668 | Method for producing fluoroaryl metal compound A method for easily and inexpensively producing and purifying a fluoroaryl metal compound such as bis(pentafluorophenyl)dialkyltin which is less colored and has no impurities is provided. Hydrocarbon magnesium halide is reacted with fluoroaryl halide in a... | 10/15/2002 |
| 6429327 | Organometallic catalysts Processes for the synthesis of substituted silanes from alkyl magnesium compounds using a mixture of catalysts. The catalyst systems include both a copper halide and a salt of a Group IA, IIA, IIA, or IVA element or a transition metal.... | 08/06/2002 |
| 6380415 | Process for producing octafluoro[2,2]paracyclophane A process for producing an octafluoro[2,2]paracyclophane includes the steps of (a) reacting 1,4-bis(trifluoromethyl)benzene with a halogenated silane represented by the general formula (1), in the presence of a low valence metal, thereby obtaining a novel... | 04/30/2002 |
| 6255515 | Processes for producing silicon- or germanium-containing organic compound, transition metal complex, catalyst for polymerization of -olefin and -olefin polymer An alkali metal- or alkali earth metal-containing organic compound (i) is reacted with a leaving group- and silicon- or germanium-containing compound (ii) in the presence of a nitrogen-containing aromatic heterocyclic compound. By such a method, it is pos... | 07/03/2001 |
| 6160151 | Process for production of diphenyl-dialkoxysilane, phenylalkyl-dialkoxysilane, octaphenylcyclotetrasilozane and sym-tetraalkyltetraphenyl-cyclotetrasiloxane Diphenyl-dialkoxysilanes and phenylmethyl-dialkoxysilanes where the alkoxy group has 1 to 10 carbons, preferably 1 or 2 carbons, are prepared by the reactions shown in Schemes 1 through 4. ##STR1##... | 12/12/2000 |
| 6156918 | Process for the preparation of silanes, with a tertiary hydrocarbon group in the a-position relative to the silicon atom The invention relates to a process for the preparation of silanes of the general formula 1 Rm R1n SiX4-m-n (1) by reaction of Grignard reagents of the general formula 2 R1 MgX1... | 12/05/2000 |
| 6127565 | Aromatic silane ether-containing coatings 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: R1 is selected from the group consisting of: (a) an aliphatic hydrocarbon group containing... | 10/03/2000 |
| 5872274 | Method for preparation of tertiary-hydrocarbylsilyl compounds A method for the preparation of tertiary-hydrocarbylsilyl compounds. The method comprises contacting a mixture comprising diethylene glycol dibutyl ether, and a Grignard reagent described by formula RMgX with a silicon compound described by formula R... | 02/16/1999 |
| 5756796 | Method for preparation of alkenylsilanes A method for preparation of alkenylsilanes comprising contacting magnesium metal with a mixture comprising diethylene glycol dibutyl ether, an alkenyl halide, and a halosilane at a temperature within a range of about 5° C. to 200° C. The method provides... | 05/26/1998 |
| 5629439 | Method for preparation of allylsilanes A method for the preparation of allylsilanes. The method comprises contacting magnesium metal with a mixture comprising diethylene glycol dibutyl ether, allyl halide, and a halosilane at a temperature within a range of about 5° C. to 20° C. The method p... | 05/13/1997 |
| 5596120 | Process for preparation of organosilanes A one-step process for preparation of organosilanes. The process comprises contacting magnesium metal with a mixture comprising an organic halide and a halosilane in a co-solvent comprising about one to 15 moles of a dialkyl ether comprising less than sev... | 01/21/1997 |
| 5550269 | Method for redistribution of trichlorosilane A method for the redistribution of trichlorosilane in the presence of N,N,N',N'-tetraethylethylenediamine (TEEDA) to form a complex comprising dichlorosilane and TEEDA. The dichlorosilane can be disassociated from the TEEDA by a means such as heating and ... | 08/27/1996 |
| 5486638 | Process for the preparation of 1-halo-3-trialkysilanyl-benzene derivatives The present invention relates to a novel process for preparing 1-halo-3-trialkylsilanyl-benzenes from 1,3-dihalo-benzenes which are useful intermediates in the preparation of 1-(3-trialkylsilylphenyl)-2,2,2-trifluoromethyl ethanones which are useful ... | 01/23/1996 |
| 5294727 | Method for preparing tertiary hydrocarbon-silyl compounds A method for preparing a tertiary hydrocarbon-silyl compound comprises the step of reacting a grignard reagent represented by the general formula: R1 MgX1 (wherein R1 represents a tertiary hydrocarbon group and X1 | 03/15/1994 |
| 5286862 | Process for the preparation of aryldimethyl(3-aryl-propyl)silanes The present invention relates to a process for the preparation of compounds of the formula I ##STR1## where X is CH.dbd.CH, N.dbd.CH, CH.dbd.N or S, R1 and R2 independently of one another are H, halogen, alkyl, alkoxy, alkylthio... | 02/15/1994 |
| 5231158 | One part heat curable organopolysiloxane compositions and method Alkynyl substituted organopolysiloxanes having alkynyl radicals attached to silicon by carbon-silicon bonds can be used in combination with a hydride siloxane crosslinker and a Group 8-10 catalyst to make one part heat curable organopolysiloxane compositi... | 07/27/1993 |
| 5153295 | Carbosilane polymer precursors to silicon carbide ceramics Polycarbosilane compositions, which can serve as silicon carbide precursors, are formed by a Grignard coupling reaction of a halomethylcarbosilane followed by reduction using a metal hydride. The polycarbosilane compositions that result have a substantial... | 10/06/1992 |
| 5124470 | Process for the preparation of arylalkylmethylsilanes The present invention relates to a process for the preparation of arylalkylmethylsilanes of the formula I ##STR1## where X is CH.dbd.CH, N.dbd.CH, CH.dbd.N or S, R1 and R2 independently of one another are H, halogen, (C1 ... | 06/23/1992 |
| 5068386 | Preparation of tertiary-hydrocarbylsilyl compounds The present invention relates to a method for the preparation of tertiary-hydrocarbylsilyl compounds through a Grignard reaction. A Grignard reagent of formula RMgX, in which R is a tertiary-hydrocarbyl group and X is a halogen atom, is reacted with a sil... | 11/26/1991 |
| 4958041 | Methods for producing diorganodialkoxysilanes In a method for the selective production of diorganodialkoxysilanes of the general formula ##STR1## by reaction of tetraalkoxysilanes of the formula Si(OR3)4 and monoorganotrialkoxysilanes of the formula R1 Si(OR... | 09/18/1990 |
| 4824918 | Method of producing silicon carbide preceramic vinyl-containing polymers Vinyl-containing polysilanes are described wherein the vinyl groups are attached to endblocking sites of intermediate reactivity. These vinyl-containing polysilanes are prepared by reacting a halogen-endblocked polysilane with, first, a non-vinyl-containi... | 04/25/1989 |
| 4806612 | Preceramic acetylenic polysilanes Preceramic actylenic polysilanes are described which contain --(CH2)w C.tbd.CR' groups attached to silicon where w is an integer from 0 to 3 and where R' is hydrogen, an alkyl radical containing 1 to 6 carbon atoms, a phenyl radical,... | 02/21/1989 |
| 4788268 | Method for preparation of epoxysilicone compounds and allyl-terminated silicone compounds Epoxysilicone compounds are prepared by first reacting a dibromobenzene compound with magnesium in anhydrous ether solvent to form a Grignard reagent and subsequently reacting the Grignard reagent with allyl bromide to form a (bromophenyl)propene compound... | 11/29/1988 |
| 4777278 | Synthesis of alkyl cycloalkyl dialkoxysilanes Alkyl cycloalkyl dialkoxysilanes (e.g., methyl cyclohexyl dimethoxysilane) can be prepared by reaction of an alkyl trialkoxysilane (e.g., methyl trimethoxysilane) with a Grignard reagent containing the cycloalkyl moiety derived in the final end-product (e... | 10/11/1988 |
| 4748262 | (Phenyl dimethyl carbinyl) silane compound and a method for the preparation thereof The invention provides organosilane compounds of a novel class having one or two (phenyl dimethyl carbinyl) groups bonded to the silicon atom as represented by the general formula (PhMe2 C)p Rq Xr Si, in which P... | 05/31/1988 |
| 4677216 | 2-Substituted-1,3-butadiene derivatives and process for producing same A novel 2-substituted-1,3-butadiene compound which may be used as a coupling agent is disclosed, i.e. a 2-substituted-1,3-butadiene compound of the general formula (I) ##STR1## in which R1, R2 and R3 independently rep... | 06/30/1987 |
| 4672135 | Catalytic process for producing silahydrocarbons Silahydrocarbons such as tetraorganosilanes prepared from halo-substituted silanes and an organomagnesium compound in the presence of a catalytically effective amount of a thiocyanate.... | 06/09/1987 |
| 4650891 | Catalytic process for producing silahydrocarbons Silahydrocarbons such as tetraorganosilanes prepared from halo-substituted silanes and an organomagnesium compound in the presence of a catalytically effective amount of a cyanide.... | 03/17/1987 |
| 4593112 | Method for the preparation of a tert-hydrocarbyl silyl compound A tert-hydrocarbyl, e.g. tert-butyl, silyl compound can be synthesized easily according to the method of the invention in which a tert-hydrocarbylmagnesium halide as a Grignard reagent is reacted with a silane compound having at least one silicon-bonded h... | 06/03/1986 |
