Abstract: A method for forming a dialkyldichlorosilane, comprising reacting elemental silicon with an alkyl chloride using copper as a catalyst together with promoters zinc, tin, and a special promoter. The special promoter is silver, a silver compound, gold, a gold compound, or combinations thereof. The alkyl may be methyl such that the dialkyldichlorosilane is dimethyldichlorosilane and the alkyl chloride is methyl chloride. The reacting generates the dialkyldichlorosilane in accordance with a first selectivity for the dialkyldichlorosilane that exceeds a second selectivity for the dialkyldichlorosilane. The second selectivity is a selectivity for the dialkyldichlorosilane that would have existed had the special promoter been absent.

Abstract: The present invention relates to silicone based amine oxides. The silicone amine oxides are non-irritating, high foaming products that are substantive to substrates like fiber, metal hair and skin. They also possess good detergency. They are made by reaction of a suitable silicone compound containing an epoxide functionality, followed by reaction with hydrogen peroxide to make the amine oxide.

Abstract: A method for synthesizing 1,3-dihydroxytetramethyldisiloxane comprising effecting the hydrolytic dehydrogenation of 1,1,3,3-tetramethyldisiloxane in the presence of water and a transition metal catalyst from Group VIII of the long-period form of the Periodic Table.

Abstract: New metallocene compounds are described where the ligand contains at least one open-pentadienyl containing radical characterized by a cyclic or acyclic, six &pgr; electron, delocalized, five atomic center structure. These metallocenes can advantageously be used in catalyst systems for the polymerization of olefins to generate a wide variety of different polymers including HDPE, LLDPE, ethylenelpropylene/(diene) elastomers, tactiospecific C3+&agr;-olefin polymers, intimate mixture thereof and the like.

Abstract: A method for producing [Ir(cod)Cl]2 is proposed, involving a) Dissolving IrCl4.nH2O and/or IrCl3.nH2O and/or H2IrCl6 in water; b) Adding an alcohol and cycloocta-1,5-diene and c) Stirring the solution at the boiling temperature, characterized in that in step b) at least one alcohol is used having the formula R—OH wherein R=CnH2n+1 and n=3−9, especially isopropanol.

Abstract: When oganohalosilanes are prepared by charging a reactor with a contact mass containing a metallic silicon powder, a copper catalyst and a co-catalyst, and introducing an organohalide-containing gas into the reactor to effect the direct reaction, the catalyst and/or co-catalyst used in the contact mass is obtained by mixing particles of the catalyst and/or co-catalyst with finely divided silica, and applying shear forces to the mixture for mutually rubbing the particles, thereby producing the catalyst and/or co-catalyst having finely divided silica fused to surfaces thereof. The invention is successful in producing organohalosilanes at a significantly improved formation rate without reducing the proportion of diorganodihalosilane.

Abstract: The present invention relates to a process for preparing organochlorosilanes and more particularly, to the process for preparing organochlorosilanes of R4R3CHSiR1Cl2 (I) by a dehydrohalogenative coupling of hydrochlorosilanes of HSiR1Cl2 (II) with organic halides of R2R3 CHX (III) in the presence of quaternary phosphonium salt as a catalyst to provide better economical matter and yield compared with conventional methods, because only a catalytic amount of phosphonium chloride is required and the catalyst can be separated from the reaction mixture and recycled easily.

Abstract: The invention relates to a process for preparing a silane of the formula I R6R5CH—R4CH—SiR1R2R3  (I), which comprises reacting a silane of the formula II HSiR1R2R3  (II), with an alkene of the formula III R6R5CH═CHR4  (III), in the presence of an iridium compound of the formula IV as catalyst [(diene)IrCl]2  (IV), and free diene as cocatalyst, where R1, R2, R3, R4, R5, R6, R and diene are as defined in claim 1.

Abstract: LDH-osmate of the formula [MII(1−x)MIIIx(OH)2][OsO42−]x/2.zH2O wherein MII is a divalent cation selected from the group consisting of Mg2+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+ and Ca2+ and MIII is a trivalent ion selected from the group consisting of Al3+, Cr3+, Mn3+, Fe3+ and Co3+, and x is the mole fraction having integral value ranging from 0.2 to 0.33, and z is the number of water molecules and ranges from 1 to 4, useful as, a catalyst, and a process for the preparation thereof and use thereof to manufacture vicinal diols.

Abstract: A quaternary ammonium salt-containing polysiloxane comprising at least one unit of the formula (1) is formulated into a fiber or fabric treating agent composition which can impart anti-microbial properties, softness and home laundry durability to fibers and fibrous materials. R1 is a monovalent organic group of 1-20 carbon atoms, R2 is a monovalent organic group containing at least one quaternary ammonium salt, R3 is an organoxy group: —OR1, and p is a positive number of 2 to 2,000.

Abstract: The invention concerns the upgrading of a by-product of direct synthesis, namely MeSiCl3, by vapor phase catalytic hydrogenation of said by-product to obtain MeHSiCl2 with greater added value. The invention concerns a method for preparing MeHSiCl2 by catalytic hydrogenation of MeSiCl3 in the presence of a metal catalyst with high selectivity levels in MeHSiCl2 economically and without having recourse to drastic and industrially unsuitable conditions. The invention uses a catalyst comprising a bimetal ruthenium/tin catalytic agent. Said catalytic agent is obtained by reacting ruthenium chloride and tin chloride in an acid medium. In practice, the catalyst is formed by a silica powder support impregnated by the ruthenium/tin catalytic agent.

Abstract: A process for the production of organosilicon compounds of the formula: (RO)3−mRmSi-Alk-Sn-Alk-SiRm(OR)3−m where R is independently a monovalent hydrocarbon of 1 to 12 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; m is an integer of 0 to 2, n is a number from 1 to 10; is disclosed. The process comprises: (A) reacting an alkali metal hydroxide compound, a sulfide compound having the formula M2Sn or MHS, where H is hydrogen, M is ammonium or an alkali metal, n is as defined above,  and sulfur in water to form a polysulfide mixture, (B) reacting said polysulfide mixture with a silane compound of the formula; (RO)3−mRmSi-Alk-X where X is Cl, Br or I, and m is the same as above, in the presence of a phase transfer catalyst. The process provides sulfur containing organosilicon compounds based on phase transfer catalysis techniques that result in a final product composition having greater stability, purity, and appearance.

Abstract: A process for the production of organosilicon compounds of the formula (RO)3−mRmSi—Alk—Sn—Alk—SiRm(OR)3−m where R is independently a monovalent hydrocarbon of 1 to 12 carbon atoms, Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; m is an integer of 0 to 2, n is a number from 1 to 8 is disclosed. The process comprises: (A) reacting sulfur, a phase transfer catalyst, a sulfide compound having the formula M2Sn or MHS, where H is hydrogen, M is ammonium or an alkali metal, n is the same as above,  and water to form an intermediate reaction product; (B) reacting said intermediate reaction product with  a silane compound of the formula; (RO)3−mRmSi—Alk—X  where X is Cl, Br or I, and m is the same as above. The invention provides an improvement process characterized by adding the phase transfer catalyst to the aqueous phase prior to mixing the aqueous phase with the silane compound for the reaction.

Abstract: A method for the preparation of organylorganooxysilanes containing at least one silicon-carbon bond is provided comprising reacting at least one triorganooxysilane with at least one base.

Abstract: 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 compound (precursor) represented by the general formula (2); and (b) conducting in the presence of a fluoride ion a dimerization of the compound into the octafluoro[2,2]paracyclophane, R3SiX  (1) where each R is independently an alkyl group or aryl group, and X is a halogen atom, where R is defined as above. It is possible to produce octafluoro[2,2]paracyclophane with a high yield from 1,4-bis(trifluoromethyl)benzene, which is easily available, via the above compound.

Abstract: Trialkoxysilanes are prepared by reacting silicon metal with an alcohol in an inert solvent in the presence of a copper catalyst by a process in which the copper catalyst contains copper(II) oxide having a BET surface area of ≧10 m2/g. Furthermore, this copper catalyst is used for the preparation of trialkoxysilanes by reacting silicon metal with an alcohol.

Abstract: Organosilicon compounds of general formula (I) R1R2R3Si—R4—S—Zn—S—R4—SiR1R2R3  (I) wherein R1, R2, R independently, represent H, a halogen, alkyl or alkoxy and R4 represents an alkylidene group, their preparation and their use in rubber mixtures.

Abstract: Process for the preparation of yellow bis(3-[triethoxysilyl]propyl)tetrasulfane having an iodine colour value of ≦10 mg of iodine/100 ml, in which process a small amount of chloropropyltrichlorosilane is added to neutral chloropropyltriethoxysilane and reaction with sodium polysulfide or with Na2S and sulfur in ethanol is then carried out.

Abstract: A specific silole derivative represented by Formula (1) is incorporated into an organic electroluminescent element. Thus, the element can have a high efficiency and a long life. In Formula (1), R1 and R2 each independently represent a substituted or unsubstituted alkyl, silyl, aryl, heterocyclic or alkenyl group and may be bonded with each other at the respective terminals; Ar1 and Ar2 each independently represent a substituted or unsubstituted aryl or heterocyclic group; and R3 to R10 each independently represent a substituted or unsubstituted alkyl, aryl or heterocyclic group and may be bonded with each other at the respective terminals.

Abstract: Disclosed is a process for preparing an antimicrobial formulation by reacting a compound of the formula 1 (R1O)3Si—(CH2)3—X  (1) with a compound of the formula 2 (H3C)NR2R3  (2) where R1 is C1-C4-alkyl R2 is C8-C20-alkyl R3 is methyl or C8-C20-alkyl X is Cl or Br, excluding iodides, in a molar ratio of (1):(2)=1:0.9 to 1:1.4, which comprises conducting said reaction in a solvent conforming to the formula 3 where R4 is C1-C4-alkyl R5 is H or methyl R6 is H or methyl m is 2, 3, 4 or 5, subject to the proviso that when m is 2 R4 and R6 are not both methyl, and not removing this solvent after said reaction, or adding this solvent after said reaction. Further disclosed is an antimicrobial formulation obtainable by the process described above.