摘要:
A process for preparing a silane mixture of the formulaSi R.sub.n X.sub.4-nwhere R is C.sub.1 to C.sub.12 linear or branched alkyl, phenyl or phenyl substituted with one or more C.sub.1 to C.sub.6 linear or branched alkyl; X is chloro, bromo or iodo; and n is an integer from 1 to 4; comprising reacting silicon tetrafluoride with metallic aluminum and RX, where R and X are as previously described, at a temperature of about 150.degree. C. to about 400.degree. C.
摘要:
The present invention is a process for substituting cycloalkyl substituents for a silicon bound hydrogen of a silane. The process employs a preformed organoborane compound as a catalyst to increase the apparent rate of the reaction and to increase the yield of desired cycloalkylsilanes.
摘要:
The present invention relates to a process for preparing disilylmethanes, wherein the magnesian reaction is carried out between methylene chloride and at least one chlorosilane in a donor solvent.
摘要:
A method is provided for silylating aromatic imides by effecting reaction between a polysilane and such aromatic imide in the presence of an effective amount of a catalyst of a transition metal such as palladium.
摘要:
A process for converting the low-boiling constituents formed in the preparation of methylchlorosilane to the Muller-Rochow process and which consist essentially of tetramethylsilane, dimethylmonochlorosilane and 2-methylbut-2-ene into a product mixture consisting essentially of trimethylchlorosilane, dimethylchlorosilane and C.sub.2 -.sub.20 alkyldimethylchlorosilanes or C.sub.6-10 -aryldimethylchlorosilanes, comprising contacting the low-boiling product mixture with AlCl.sub.3, AlOCl and/or AlBr.sub.3, together with hydrogen chloride, in the liquid phase at about 40.degree. to +25.degree. C. The mixture prior to conversion may be contacted with HCl and either ZnCl.sub.2 or active charcoal and/or an olefin may be added thereto.
摘要:
An improved process for producing an aromatic containing silicon compound comprising reacting an aromatic organic compound of the formula RX.sub.a with a silicon compound of the formula R.sub.b ' Si Z.sub.4-b in the presence of molar quantities of Mg and from 0.5 to up to 1 mole of a promoter which is preferably tetrahydrofuran per mole of the aromatic compound where R is preferably phenylene, X is chloro, a is 2, R' is preferably methyl, Z is alkoxy of 1 to 8 carbon atoms and b is equal to 2.
摘要:
A catalyst composition consisting essentially of a non-linear polymer consisting essentially of a recurring unit having the following structural formula:(R.sup.2).sub.2 P--R.sup.1 --Si--O.sub.3/2wherein R.sup.1 is an unsubstituted or substituted straight or branched chain divalent saturated alkylene radical having 1 to 10 carbon atoms or an unsubstituted or substituted divalent aryl radical having 1 to 3 benzene rings wherein the substituents for the alkylene radical can be halogen or a phenyl radical and the substituents for the aryl radical can be halogen or straight or branched chain saturated alkyl radicals having 1 to 5 carbon atoms; andR.sup.2 is an unsubstituted or substituted straight or branched chain or cyclic monovalent saturated alkyl radical having 1 to 10 carbon atoms or an unsubstituted or substituted monovalent aryl radical having 1 to 3 benzene rings wherein the substituents for the alkyl radical can be halogen or a phenyl radical and the substituents for the aryl radical can be halogen or straight or branched chain saturated alkyl radicals having 1 to 5 carbon atoms; andWherein each phosphorous atom in the polymer is coordinated with a platinum or palladium metal atom having a zero or positive charge, each positively charged metal atom having a sufficient number of negatively charged organic or inorganic radicals, devoid of functional groups, attached thereto to satisfy the valence of said transition metal atom, and wherein the radicals are selected from the group consisting of halogens; nitrates; sulfates; straight chain alkoxy or acyloxy radicals having 1 to 10 carbon atoms; and aryloxy radicals having 1 to 3 benzene rings.
摘要:
Dialkyldifluorosilane compounds can readily be produced by a two step process wherein the first step involves the formation of an alkyltrifluorosilane compound from the reaction of an organoaluminum compound with silicon tetrafluoride and then reacting the alkyltrifluorosilane compound with an organo-aluminum compound to produce a reaction mixture containing the desired dialkyldifluorosilane compounds.
摘要:
Aromatic group containing organochlorosilanes are prepared by mixing chlorine, in the absence of irradiation, with a mixture of trichlorosilanes or methyldichlorosilanes and aromatic compounds, the then introducing the resulting mixture within an extremely short period of time into a zone irradiation with light, at least 30 percent of whose rays have wave lengths not exceeding 3,800 Angstrom. A wide variety of aromatic group containing organochlorosilanes are selectively obtained by the inventive process with high yields. Further, the formation of byproducts, which are difficult to separate and/or which have not utility, is effectively prevented.
摘要:
OR M''(PR''3)2SI(RAC13-A)MX2-M. SPECIFICALLY, HEXACHLORODISILANE IS REACTED WITH ALLYL CHLORIDE IN THE PRESENCE OF PD(P(CH3)2C6H5)2C12 TO GIVE ALLYL TRICHLOROSILANE. THE REACTION BETWEEN DISILANES AND HYDROCARBON CHLORIDES TO PRODUCE R''NSIC14-N IS CATALYZED WITH M'', M(PR"3)2X2