Abstract: A polyether having molecular weight from 1,000 to 50,000, end-blocked with hydrolyzable silyl groups and represented by the general formula (P): ##STR1## where R.sup.1, R.sup.2, R.sup.6 and R.sup.7 individually represent a divalent hydrocarbon group, R.sup.4 represents a monovalent hydrocarbon group, R.sup.8 represents an alkyl group with 1 to 6 carbon atoms, a represents a number from 1 to 3, m represents a number from 10 to 500, n represents a number of 1 or greater and --N.dbd.X.dbd.N-- represents a residue group of a diimino heterocyclic compound, from which nitrogen-bonded hydrogen atoms are eliminated, said diimino heterocyclic compound having no ##STR2## bond in a molecule is produced and utilized in room temperature curing compositions containing inorganic filler and curing catalyst. There is also disclosed a method for producing the above polyether by reacting polyoxyalkylene end-blocked with epoxy groups, diimino heterocyclic compound and organo silicon compound.

Abstract: A surface-treated poly methyl silsesquioxane powder characterized by surface-treatment with an agent comprising a compound which has at least two radicals attached to a metal atom or a silcon atom, said radical is selected from the group consisting of a hydroxyl radical, a hydrolyzable radical and a monovalent hydrocarbon radical substituted by a polar group.

Abstract: In a process for producing an alkoxysilane represented by general formula (III):(CH.sub.3).sub.a H.sub.b Si(OR).sub.c Cl.sub.4-(a+b+c) (III)wherein a represents a number of 0 to 2, b represents a number of 1 to 3, c represents a number of 0 to 2, the sum of a+b+c represents a number of not greater than 4 which comprises reacting a chlorosilane represented by general formula (I):(CH.sub.3).sub.a H.sub.b SiCl.sub.4-(a+b) (I)wherein a and b have the same meanings as described above and a+b represents a number of less than 4, with an alcohol represented by general formula (II);ROH (II)wherein R represents an alkyl group, a process for producing said alkoxysilanes characterized in that the reaction of the chlorosilane and the alcohol is performed in the co-presence of (a) an inert low boiling solvent having a boiling point lower than the boiling point of the objective alkoxysilane represented by general formula (III) and a difference in boiling point is not smaller than 4.degree. C.

Abstract: A polyether having molecular weight from 1,000 to 50,000, end-blocked with hydrolyzable silyl groups and represented by the general formula (P): ##STR1## where R.sup.1, R.sup.2, R.sup.6 and R.sup.7 individually represent a divalent hydrocarbon group, R.sup.4 represents a monovalent hydrocarbon group, R.sup.8 represents an alkyl group with 1 to 6 carbon atoms, X represents an aromatic or heterocyclic ring, a represents a number from 1 to 3, m represents a number from 10 to 500, n represents a number of 1 or greater is produced and utilized in room temperature curing compositions containing inorganic filler and curing catalyst. There is also disclosed a method for producing the above polyether by reacting polyoxyalkylene end-blocked with epoxy groups, dimercapto compound and organo silicon compound.

Abstract: A composition for forming a release coating comprises:(A) 100 parts by weight of a polyorganoborosiloxane having an average composition represented by formula I:R.sub.a SiO.sub.(4-a)/2 .multidot.(BO.sub.1.5).sub.b (I)wherein R is a substituted or unsubstituted monovalent hydrocarbon group bonded to a silicon atom, a is a number between 1.8 and 2.2, and b is a positive number, and containing at least 30 ppm by weight of boron atoms in the form of .tbd.Si--O--B.dbd. linkages, each molecule thereof containing at least two alkenyl groups bonded to a silicon atom;(B) a polyorganohydrogensiloxane containing in each molecule at least three hydrogen atoms bonded to silicon atoms in an amount of 0.5 to 10 hydrogen atoms for each of the alkenyl groups in component (A); and(C) a catalytic amount of a curing catalyst selected from the group consisting of platinum and platinum compounds.

Abstract: An addition curable polyorganosiloxane composition is stabilized against premature cure at room temperature by the presence of one or more compounds selected from the group consisting of (i) a silane compound represented by the following general formula:(R.sup.4).sub.n Si(OR.sup.5).sub.4-nin which R.sup.4 represents a member selected from the group consisting of a hydrogen atom and a substituted or unsubstituted monovalent hydrocarbon group; R.sup.5 represents a substituted or unsubstituted monovalent hydrocarbon group containing a --C.tbd.C-- bond; "n" represents an integer of from 1 to 3; and at least one member selected from the group consisting of Si--H, Si--CH.dbd.CH.sub.2 and Si--C.tbd.CH bonds is contained in the molecule and (ii) an organosilane compound obtainable by subjecting the above silane compound to addition reaction between Si-H and --C.tbd.C-- bonds contained therein.The composition is highly stable at room temperature and can be stored for extended periods of time.

Abstract: The present invention concerns a lubricating composition which comprises:(A) 100 parts by weight of polyorganosiloxane having a viscosity of 50 cSt or more at 25.degree. C., wherein an organic group bonded to a silicon atom being a monovalent hydrocarbon group containing no aliphatic unsaturated bonding and(B) 0.01 to 7 parts by weight of polymethylsilsesquioxane powder having an average particle size of 0.05 to 50 .mu.m.Also, the present invention concerns a hydraulic fluid which comprises:(C) 100 parts by weight of polyorganosiloxane having a viscosity of 500 cSt or more at 25.degree. C., wherein an organic group bonded to a silicon atom being a methyl group or a phenyl group, and0.01 to 7 parts by weight of Component (B) as mentioned above.

Abstract: In a process for producing 5-vinylbicyclo[2.2.1]heptyltrichlorosilane by addition-reacting 5-vinylbicyclo[2.2.1]hepta-2-ene with trichlorosilane, a process for producing 5-vinylbicyclo[2.2.1]heptyltrichlorosilane characterized in that a palladium metal or palladium complex is used as a catalyst.

Abstract: A vinylsilane compound represented by general formula (I):R.sup.1 CH.sub.2 CH.sub.2 SiR.sub.a.sup.2 (CH.dbd.CH.sub.2)3-a (I)wherein R.sup.1 represents a monovalent alicyclic unsaturated hydrocarbon group selected from the group consisting of a cyclohexenyl group and a bicycloheptenyl group; R.sup.2 represents a monovalent hydrocarbon group free from an aliphatic unsaturated bond; and a represents 1 or 2, is herein disclosed.

Abstract: A key-touch sensor has an electric circuit formed on a first electrically insulating substrate covered with a carbon electrode, an electric circuit formed on a second electrically insulating substrate covered with a carbon electrode which is opposed to the electric circuit on the first substrate across a gap, and a pressure-sensitive electroconductive layer deposited to at least one of the first or second substrates and disposed to fill the gap.

Abstract: A process (I), for producing a pressure-sensitive electroconductive sheet by (A), forming conductive circuits or electrodes in a flexible porous substrate and (B), applying, followed by curing a pressure-sensitive conductive paste to either or both sides of the substrate to form a pressure-sensitive conductive layer; and a process (II) for producing a pressure-sensitive electroconductive sheet by (A), forming conductive circuits or electrodes in a flexible porous subhstrate, (B), subsequently applying, followed by curing, a pressure-sensitive conductive paste to either side of the substrate to form a pressure-sensitive conductive layer, and (C), applying, followed by curing, insulating silicone rubber to the side of the substrate on which the pressure-sensitive conductive layer is not formed to form an insulating silicone rubber layer.

Abstract: Polyorganosiloxane compositions comprising:(A) a polyorganosiloxane having two or more of the following unit, in the molecule, represented by the formula: ##EQU1## wherein, R.sup.1 represents an alkenyl radical; R.sup.2 represents a substituted or unsubstituted monovalent hydrocarbon radical having no unsaturated aliphatic bond; a is an integer of 1 of 2; b is an integer of 0 to 2; and a+b is an integer of 1 to 3;(B) a polyorganohydrogensiloxane, having units represented by the formula: ##EQU2## wherein, R.sup.3 represents a substituted or unsubstituted monovalent hydrocarbon radical; c is an integer of 0 to 2; d is an integer of 1 or 2; and c+d is an integer of 1 to 3,and having at least three hydrogen atoms bonded to silicon atoms in a molecule, in an amount such that the number of the hydrogen atoms bonded to silicon atoms may be 0.5 to 4.0 per R.sup.

Abstract: A curable silicone composition which is characterized by comprising:(A) a polyorganosiloxane containing alkenyl groups attached to silicon atoms in the molecule;(B) a polyorganosiloxane containing hydrogen atoms attached to silicon atoms in the molecule;(C) a catalytic amount of curing catalyst; and(D) an amine compound represented by the formula:X(CH.sub.2).sub.n NR.sup.1 R.sup.2wherein X represents a substituted or unsusbtituted monovalent hydrocarbon group or a monovalent group represented by Z.sub.3 SiQ.sup.1 in which Q.sup.1 represents a substituted or unsusbtituted divalent hydrocarbon group and Z represents a substituted or unsubstituted monovalent hydrocarbon group or an alkoxy group with 1 to 4 carbon atoms, n represents an integer of 0 to 5, R.sup.1 represents a substituted or unsubstituted alkyl group with 1 to 10 carbon atoms or a hydrogen atom, and R.sup.2 represents a substituted or unsubstituted alkyl group with 1 to 10 carbon atoms or a monovalent group represented by Z.sub.3 SiQ.sup.1.

Abstract: Polyethers end-blocked with hydrolyzable silyl groups are manufactured by reacting an epoxy end-blocked linear polyoxyalkylene, a mono-epoxy substituted hydrolyzable silane and an aromatic diamine and compounded with filler to produce a room temperature curable elastomer.

Abstract: Room temperature curing polyorganosiloxane compositions comprising:(A) 100 parts by weight of a composition containing(1) a polyorganosiloxaneR.sup.1.sub.a (R.sup.2 O).sub.3-a SiO[R.sup.2 SiO].sub.n Si(OR.sup.2).sub.3-a R.sup.1.sub.awherein R represents a substituted or unsubstituted monovalent hydrocarbon group; which the viscosity of (A) at 25.degree. C. may be 100 to 500,000 cP,which is reactive at the terminal groups and(2) a silane of the formula:R.sup.3.sub.b Si(OR.sup.4).sub.4-bwherein R represents substituted or unsubstituted monovalent hydrocarbon groups; b is a numeral of 0 or 1,or a hydrolyzate thereof,wherein (A)(1) is 85 to 100% by weight of the total of (A)(1) and (A)(2);(B) 0.01 to 10 parts by weight of a curing catalyst;(C) 0.5 to 10 parts by weight of a nitrogen containing silicon compound, wherein a nitrogen atom is bonded to a silicon atom via one or more carbon atoms and the nitrogen atom is also bonded directly to the same silicon atom or another silicon atom; and(D) 0.

Abstract: A torque grease comprising:(A) 100 parts by weight of a polyorganosiloxane represented by the general formula: ##EQU1## wherein R.sup.1 is a C.sub.(1-12) monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals, and substituted or unsubstituted aryl radicals; a equals 1.9 to 2.7; n is a positive number; and(B) 10 to 200 parts by weight of a polyorganosilsesquioxane represented by the general formula:R.sup.2 SiO.sub.3/2wherein R.sup.2 is a monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals and substituted or unsubstituted aryl radicals.

Abstract: A vulcanizable silicone elastomer composition which has novel crosslinking points comprises (A) 100 parts by weight of a polyorganosiloxane having a polymerization degree of at least 100, wherein the organic groups are selected from monovalent substituted and unsubstituted hydrocarbon groups and are attached to silicon atoms at a rate, on average, in the range of 1.98 to 2.02 per silicon atom and at least two of the organic groups are monovalent hydrocarbon groups possessing at least five carbon atoms and a carbon-carbon double bond issuing from a silicon atom through at least one carbon atom, (B) 5 to 200 parts by weight of an inorganic filler having a specific surface area of at least 50 m.sup.2 /g, and (C) 0.05 to 15 parts by weight of an organic peroxide.

Abstract: The present invention relates to a polyorganosiloxane composition and, more particularly, to a polyorganosiloxane composition having good curing properties at room temperature and producing cured materials having good water absorption properties. The polyorganosiloxane composition comprises:(A) a curable silicone rubber composition containing polysiloxane which is liquid at room temperature as a base polymer; and(B) a polymer containing acrylic acid or an alkali metal salt of acrylic acid as a monomer unit.

Abstract: A protection method for molded-plastic surfaces comprising the steps of:forming on the molded-plastics surface a first film from a composition including(A) acrylic polyol, 5 to 80 parts by weight,(B) polyalkyl methacrylate, 95 to 20 parts by weight and(C) isocyanate compound as an isocyanate group 0.5 to 20 equivalents with respect to 1 equivalent of a hydroxyl group in (A); andforming on the first film a second film from a composition including(D) organosilanetriol, represented by R.sup.1 Si(OH).sub.3 wherein R.sup.1 represents a monovalent group selected from the group consisting of an alkyl group having 1 to 3 carbon atoms and an aryl group, and/or a partial condensate thereof, 10 to 90 parts by weight and(E) colloidal silica, 90 to 10 parts by weight.

Abstract: A coating composition which is intended to improve surface hardness of plastics materials comprising components:(A) 5 to 45% by weight of an organosilanetriol expressed by the formula R.sup.1 Si(OH).sub.3, wherein R.sup.1 represents a monovalent hydrocarbon group, and/or a partial condensate thereof;(B) 45 to 5% by weight as solids of colloidal silica; and(C) 40 to 60% by weight of a solvent containing an aliphatic alcohol having from 1 to 6 carbon atoms, and/or ethylene glycol monoethyl ether acetate,in an amount such that the total of the above components is 100 parts by weight, and mixed therein(D) a catalyst dispersion containing 0.1 to 5 parts by weight of a compound expressed by the formula (R.sup.2).sub.4 NOCHO, wherein R.sup.2 can be the same or different and represents an alkyl group having carbon number of from 1 to 2, and 100 parts by weight of an aliphatic alcohol having carbon number of from 1 to 6, so long as the compound expressed by the formula (R.sup.2).sub.4 NOCHO is 0.1 to 0.