Abstract: An improvement in a process for preparing silicon tetrachloride or silicon trichloride wherein elemental silicon is contacted with hydrogen chloride in a fluidized bed, the improvement residing in carrying out the process in the presence of an iron compound, which iron compound is present in an amount such that when calculated as iron, the iron content is 10 to 43 weight percent based on the weight of the total solids in the fluidized bed, at a temperature in the range of 260.degree.-600.degree. C, preferably in the absence of an inert gas.

Abstract: An improvement in a process for the preparation of an alkoxysilane of the formula:R.sub.4.sub.-n.sub.-m Si(OR').sub.n Cl.sub.mwhereinR is hydrogen or a saturated or unsaturated, chlorinated or unchlorinated alkyl radical of 1 to 12 carbon atoms;R' is an alkyl radical of 1 to 11 carbon atoms which can contain a hetero atom in the chain;m equals 0 to 3;n equals 1 to 4;n + M is equal to or less than 4;By esterification of a chlorosilane of the formula:R.sub.4.sub.-n SiCl.sub.

Abstract: A method for protecting the surface of a metal surface which comprises applying to said surface an organophosphorus compound of the formula ##STR1## wherein A IS 0 OR 1R is a branched or unbranched chained bivalent alkylene radical of 1 to 12 carbon atoms which is substituted or unsubstituted and can contain in the chain structure --O--, --S--, ##STR2## R' is a branched or unbranched alkyl radical of 1 to 12 carbon atoms which can be halogen substituted and can contain in the chain structure ##STR3## X is an epoxy ring, halogen, alkylene, carboxylic acid ester residue, amino, isocyanato, isothiocyanato, urea, thiourea, urethano, alkyl substituted thio radical or the radical or a heterocyclic ring containing O, S or N in the ring structure; a new organophosphorus compounds having the formula set forth above and more particularly defined by specific chemical structures.

Abstract: The use of certain chloroplatinic complex compounds of the formula:[Pt R.sup.1 Cl.sub.2 ].sub.awherein a is 1 or 2 and R.sup.1 is an unsaturated ketone residue, to catalyze the addition of alkoxy, aryloxy or halo hydrogen silanes to aliphatically unsaturated compounds (carbon to carbon unsaturation such as olefins and/or acetylenes). The products of the reaction can be used as additives for plastics and synthetic resins.

Abstract: A process for preparing monosilane and low silane esters thereof which comprises contacting a hydrogen silane ester of the formula H.sub.x Si(OR).sub.4.sub.-x, wherein R represents an alkyl or alkoxyalkyl moiety and x is 1, 2 or 3, with a catalyst of an element of the first group and/or the second or third main or secondary group of the periodic system or iron or manganese or and organic nitrogen compound under distillation conditions and recovering a product having the formula H.sub.x.sub.+1 Si(OR).sub.4.sub.-x.sub.-1 and/or a product of the formula H.sub.x.sub.-1 Si(OR).sub.4.sub.-x.sub.+1.

Abstract: A process for the preparation of a partial or complete trichlorosilane ester of the formulaH-Si(OR).sub.3-n Cl.sub.nwherein n is 0 or 1, R is an alkyl group of 1 to 11 carbon atoms, an alkyl group of 1 to 11 carbon atoms containing an oxygen atom in the chain, or an alkyl group of 1 to 11 carbon atoms containing a sulfur atom in the chain which comprises:1. Forming a partial esterification product by contacting a trichlorosilane with up to a 10% stoichiometric excess of a primary alcohol, the stoichiometric amount corresponding to only partial esterification of said trichlorosilane, said contacting being conducted only in the liquid phase without any contact in the vapor phase;2. Removing HCl formed from the reaction vessel;3. Thereafter contacting the partial esterification product with additional primary alcohol and removing liberated residual HCl from the reaction vessel.

Abstract: The use of certain chloroplatinic complex compounds of the formula:[Pt R.sup.1 Cl.sub.2 ].sub.awherein a is 1 or 2 and R.sup.1 is an unsaturated ketone residue, to catalyze the addition of alkoxy, aryloxy or halo hydrogen silanes to aliphatically unsaturated compounds (carbon to carbon unsaturation such as olefins and/or acetylenes).

Abstract: Glycidylexypropylalkoxysilanes are produced by thermal treatment of novel siliceous dioxalane derivatives of the formula: ##EQU1## wherein a is 0 to 1 and R represents an oxygen radical or two hydrogen atoms and R' and R" each represents an alkyl radical, wherein the R" 's can be the same or different. The glycidyl products are useful as adhesives.