Abstract: After reacting sodium sulfide anhydride and hydrogen sulfide, 3-halopropylalkoxy silane represented by the general formulaX (CH.sub.2).sub.3 Si (OR).sub.a R.sub.3-a (I)is added reacted, wherein X denotes Cl or Br; R denotes a methyl, ethyl or propyl group wherein R's can be all identical or different from each other; and "a" denotes an integer 1, 2 or 3.

Abstract: A polysulfide silane mixture is reacted with a phosphine or phosphite to produce a polysulfide silane mixture having a reduced content of high polysulfide silanes.

Abstract: Organic silicon compounds having an alkoxy group at one end and an alkali metal salt of sulfonic acid or sulfuric acid at the other end are novel. They can be obtained by effecting hydrosilylation reaction between an alkoxyhydro-silane and a compound having an alkenyl group at one end and an alkali metal salt of sulfonic acid or sulfuric acid at the other end. They are useful as a modifier and surface treating agent.

Abstract: Disclosed is a novel polyfluorocarbon group-containing alkoxy silane compound useful as a silane coupling agent as represented by the general formulaA--R.sub.f --(--CH.sub.2 --).sub.n --NH--R.sup.1 --SiR.sub.3,in which each R is, independently from the others, a monovalent hydrocarbon group having 1 to 10 carbon atoms or an alkoxy group having 1 to 6 carbon atoms with the proviso that at least one of the three groups denoted by R is an alkoxy group, R.sup.1 is a divalent hydrocarbon group having 1 to 10 carbon atoms, A is a monovalent group selected from the class consisting of a hydrogen atom, a fluorine atom, an aminomethyl group and a 2-aminoethyl group, R.sub.f is a polyfluorinated alkylene group with 1 to 20 carbon atoms or a polyfluorinated etherified alkylene group with 2 to 20 carbon atoms having at least one oxygen atom between two carbon atoms of an alkylene group forming an ether linkage, at least two of the hydrogen atoms therein being substituted by fluorine atoms, and the subscript n is 1 or 2.

Abstract: The novel organosilicon compound of the invention is an alkoxysilane having a silicon-bonded C.sub.8 to C.sub.14 long-chain alkyl group substituted at the .omega.-position by a bromine atom or an amino (C.sub.2-6) alkyl-substituted amino group. Synthetic methods of such compounds are described and several examples of the compounds are given with their characterization data. The inventive compound having, in particular, the amino-alkyl-substituted amino group are useful as a surface-treatment agent of a silica filler as a water-resistant reinforcing filler in molding resin compositions.

Abstract: A process for removing acidic impurities from alkoxysilanes obtained from halogenosilanes and alcohols which inevitable contain small amounts of acidic impurities is described. In the process, at least one member selected from alkali metal salts of alcohols and amines having a great steric hindrance as having a bulky substituent is added to the alkoxysilane for a time sufficient to neutralize the acidic impurities and the mixture is purified by distillation to obtain a substantially acidic impurity-free alkoxysilane.

Abstract: A novel and simple method is proposed for preventing coloration of an organosilicon compound at an elevated temperature or under irradiation with light. The method comprises admixing the organosilicon compound with a specific aromatic adjuvant compound represented by the general formula ##STR1## in which each R is, independently from the other, a monovalent hydrocarbon group and X and Y are each, independently from the others, a divalent group or atom selected from the class consisting of --NH--, --S-- and --O--.

Abstract: Disclosed in a novel organosilane compound represented by the general formula(R.sup.1 O).sub.m Me.sub.3-m Si--R.sup.2 --NH--R.sup.3 --NH.sub.2,in which Me is a methyl group, R.sup.1 is a methyl or ethyl group, R.sup.2 is a divalent hydrocarbon group having 1 to 10 carbon atoms, R.sup.3 is a divalent hydrocarbon group having 7 to 10 carbon atoms of which six carbon atoms jointly form a benzene ring, at least one of the nitrogen atoms in the amino and imino groups being not directly bonded to the carbon atom which is a member of the benzene ring, and the subscript m is 1,2 or 3.

Abstract: The platinum catalyst composition comprises a diolefin component represented by the following general formulaCH.sub.2 .dbd.CH--R--CH.dbd.CH.sub.2wherein R is a divalent saturated hydrocarbon radical, and a platinum compound component. The platinum catalyst composition is extremely useful for hydrosilylation of an organosilicon compound having a .tbd.SiH radical with an olefin. When used for the hydrosilylation reaction, it inhibits effectively the isomerization of the starting material olefin, thereby enabling the intended organosilicon compound to be obtained in a high yield.

Abstract: Amino group-containing silicon compounds having at least two aromatic rings and hydrochlorides thereof are effective modifiers for composite materials for improving soldering heat resistance and heat shock resistance.

Abstract: Organosilicon compounds represented by the following general formula, which acquire high thermal resistance suitable for silane coupling agents by containing a phenylene group between an alkoxysilyl group and a (metha)acrylic group; ##STR1## (wherein R.sup.1 represents a monovalent hydrocarbon residue containing one or two carbon atoms, R.sup.2 represents a divalent hydrocarbon residue containing two or three carbon atoms, R.sup.3 represents a hydrogen atom or a methyl group, m represents an integer from 1 to 3, and n represents 0 to 1).

Abstract: The platinum catalyst composition comprises a diolefin component represented by the following general formula:CH.sub.2 .dbd.CH--R--CH.dbd.CH.sub.2wherein R is a divalent saturated hydrocarbon radical, and a platinum compound component. The platinum catalyst composition is extremely useful for hydrosilylation of an organosilicon compound having a .tbd.SiH radical with an olefin. When used for the hydrosilylation reaction, it inhibits effectively the isomerization of the starting material olefin, thereby enabling the intended organosilicon compound to be obtained in a high yield.

Abstract: A primer composition comprising a product of the reaction between an organosilane compound of the following general formula (A) and a phenyl group-free organic diisocyanate compound to acquire a high curing speed and excellent adhesiveness to both inorganic and organic materials and to resist generation of stain after curing: ##STR1## wherein R.sup.1 represents a monovalent hydrocarbon residue containing 1 to 4 carbon atoms; R.sup.2 represents a divalent hydrocarbon residue containing 1 to 4 carbon atoms; and n represents 0, 1 or 2.

Abstract: A room temperature curable resin composition comprising a copolymer of (A) with (B) shown below:(A) An acrylic group-containing silane compound represented by the following Formula (I): ##STR1## wherein R.sup.1 represents a monovalent hydrocarbon group; R.sub.2 represents an alkylene group having not less than 2 carbon atoms; R.sup.3 and R.sup.4 each represent a hydrogen atom or a methyl group; m represents 0, 1 or 2; and n represents an integer of not less than 1.(B) A compound having an unsaturated group copolymerizable with said component (A) acrylic group-containing silane compound. This composition can be cured at an accelerated rate not only at the surface but also at the depths thereof, and may crack with difficulty after cured.