60764-86-5Relevant articles and documents
Process for preparing organosilanes
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Page/Page column 31; 32, (2008/06/13)
Preparation of organosilane compound (I) comprises reaction of (halo-organo) alkoxysilane compound (II) with sulfurizing agent (alkali hydrogensulfide, metal sulfide and/or metal polysulfide) and optionally in addition with sulfur or hydrogen sulfide in alcohol. Preparation of organosilane compound (I) of formula (Si (R) 2(R1O)(R2)-) nX m comprises reaction of (halo-organo)alkoxysilane compound (II) of formula (Si (R) 2(R1O)(R2)-Hal) with sulfurizing agent (alkali hydrogensulfide (3 wt.%), metal sulfide (Me 2S) and/or metal polysulfide (Me 2S g) (10 wt.%)) and optionally in addition with sulfur or hydrogen sulfide in alcohol. R : 1-8C-alkyl, 1-8C-alkenyl, 1-8C-aryl, 1-8C-aralkyl or OR1; R 1>1-24C-alkyl or alkenyl, aryl, aralkyl, H, alkylether O-(CR 3> 2)-O-alk, O-(CR 3> 2) y-O-alk or alkylpolyether O-(CR 3> 2O) y-alk or O- (CR 3> 2CR 3> 2-O) y-alk; y : 2-20; R 3>H or alkyl; alk : optionally saturated, linear, aliphatic and/or aromatic 1-30C-hydrocarbon; R 2>alk optionally substituted with halo, H, NH 2 or NHR 1>; either X : S; or X : SH; Hal : Cl, Br, F or I; Me : alkali metal, NH 4 or (alkaline earth metal) 1/2; and g : 1, 5-8 or 0. Provided that when n is 2 and m with an average sulfur chain length of 1.5-4.5, then X is S and when n is 1 and m is 1, then X is SH.
Preparation of sulfide chain-bearing organosilicon compounds
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Page/Page column 4, (2008/06/13)
By reacting a mixture of a halogenoalkyl group-bearing organosilicon compound and sulfur with an aqueous solution or water dispersion of an ammonium or alkali metal sulfide or a hydrate thereof in the presence of a phase transfer catalyst, a sulfide chain-bearing organosilicon compound having the average compositional formula (2): [in-line-formulae](R1O)(3-p)(R2)pSi—R3—Sm—R3—Si(OR1)(3-p)(R2)p??(2) [/in-line-formulae] wherein m has an average value of 2≦m≦6 is obtained in high yields and at a low cost with minimized formation of a monosulfide-bearing organosilicon compound.
Process for the preparation of (mercaptoorganyl)-alkoxysilanen
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Page/Page column 11, (2008/06/13)
Production of mercaptoorganyl alkoxysilanes comprises reacting an alkali metal hydrogen sulfide with a mixture of haloorganyl alkoxysilane and haloorganyl halosilane in an alcohol under pressure in a sealed vessel in the absence of oxygen.