Abstract: A silicone emulsion composition containing a reinforcing amount of alumina sol blended in an emulsion precursor obtained by emulsifying a polydiorganosiloxane having at least one silanol group per molecule, one nonionic surfactant and the remainder water.

Abstract: A silicone sealant composition comprising(A) 100 parts by weight of a silanol terminated polydiorganosiloxane having a viscosity of 100 to 200,000 cSt at 25.degree. C.,(B) 0.1 to 30 parts by weight of an aminoxy group-containing organosilicon compound containing, on the average, more than two organoaminoxy groups per molecule,(C) 5 to 300 parts by weight of an inorganic filler, and(D) 1 to 30 parts by weight of an ultraviolet-curable oligomer containing acryl groups.

Abstract: A curable silicone composition comprising:(A) an organopolysiloxane having in the molecule at least two alkenyl groups and at least two alkoxy groups;(B) an organopolysiloxane having in the molecule at least two hydrogen atoms bonded directly to silicon atoms, and(C) a catalyst based on platinum, palladium or rhodium for the addition reaction.

Abstract: A composition curable to a dustproof film comprising:(A) 100 parts by weight of an alkyd resin,(B) 5 to 200 parts by weight of methyltrimethoxysilane,(C) a curing catalyst; and(D) 50 to 5000 parts by weight of a solvent mixture consisting of(a) a volatile organosilicon compound which has a boiling point of 70.degree. to 250.degree. C. at atmospheric pressure and has a formula selected from the group consisting of(R.sup.1).sub.4 Si, (R.sup.2).sub.3 SiO[(R.sup.3).sub.2 SiO].sub.m Si(R.sup.2).sub.3R.sup.4 Si[OSi(R.sup.5).sub.3 ].sub.3 and [(R.sup.6).sub.2 SiO].sub.nwherein R.sup.1 to R.sup.6 respectively represent the same or different alkyl groups, m represents 0 or a positive integer and n represents a positive integer of 3 or above, and(b) a hydrocarbon solvent substantially free of methanol, wherein the amount of (a) is 5 to 95 wt. % of the total amount of (a) and (b).

Abstract: A composition for concealing grazes or scratches on glass surfaces comprising an emulsion of composition (A) and composition (B), said composition (A) comprising the emulsion-polymerization product of:(1) 0.1-60 weight percent of (A) of the reaction product of:(a) 0.1-50 weight percent of (a) and (b) of the product obtained by reacting:(i) 1 mole of a compound of the formula Q.sup.1 NHR.sup.1 SiR.sub.a.sup.2 (OR).sub.3-a with(ii) 0.5-3.0 moles of a compound of the formula Q.sup.2 R.sup.4 SiR.sub.a.sup.2 (OR).sup.6).sub.3-b ;(b) 50-99.9 weight percent of (a) and (b) of a polydiorganosiloxane having at least one silanol group and a viscosity at 25.degree. C. of 5-10,000 cSt;(2) 1-50 weight percent of (A) of a compound of the formula (R.sup.7 R.sup.8 SiO).sub.n ;(3) 0.

Abstract: There is provided herein a curable silicone elastomer composition comprising the following components: (A) 100 parts by weight of a polyorganosiloxane having at least two silicon-bonded vinyl groups per molecule, (B) 1 to 300 parts by weight of fine powders of tungsten carbide and (C) a component for crosslinking of said component (A) selected from the group consisting of (1) a combination of (a) 0.1 to 10 parts by weight of a polyorganohydrogensiloxane having an average of at least two silicon-bonded hydrogen atoms per molecule and (b) 0.000001 to 0.1 part by weight of a platinum catalyst; (2) a combination of said (a), (b) and (c) 0.00001 part to less than 0.1 part by weight of an organic peroxide except from organohydroperoxide; (3) a combination of said (a) and (d) 0.00001 part to less than 0.2 part by weight of the reaction product between said (b) and (c); and (4) 0.1 to 3.0 parts by weight of an organic peroxide except from organohydroperoxide.

Abstract: An adhesive polyorganosiloxane composition suitably employable as a sealant for joint portions of buildings, constructions, etc. which comprises:(A) a polydiorganosiloxane being end-blocked by silanol group and having the viscosity of 100-200,000 cSt at 25.degree. C.;(B) an aminoxy group-containing organosilicon compound having organoaminoxy groups of more than 2 per a molecule on the average;(C) an inorganic filler; and(D) a monovalent alcohol having the formula R--OH, in which R is a primary or secondary hydrocarbon group selected from the group consisting of a monovalent saturated aliphatic hydrocarbon group and an aralkyl group, and having the vapor pressure of at least 0.1 mmHg at 20.degree. C.

Abstract: There is disclosed a compositon forming an elastic foam at normal temperature essentially comprising(A) polydiorganosiloxane end-blocked by silanol group and a viscosity within the range between 500 and 200,000 cSt at 25.degree. C.,(B) an aminoxy group-containing organosilicon compound having more than two silicon-bonded organoaminoxy groups on the average in one molecule,(C) a silicon-hydrogen bond containing polyorganosiloxane having more than two silicon-hydrogen bonds on the average in one molecule, with the proportion of said silicon-hydrogen bonds being 10% or more of the number of silicon atoms,(D) fumed silica,(E) an isocyanato group-containing organic compound, and optionally(F) a polyhydric alcohol having two or more alcoholic hydroxyl groups bonded to primary carbon atoms and/or two or more alcoholic hydroxyl groups bonded to secondary carbon atoms in one molecule.

Abstract: A process for preparing an epoxy-modified silicone resin which comprises reacting(A) an organosilicon compound containing substantially no hydroxyl groups directly bonded to the silicon atom and having the mean formulaR.sup.1.sub.a Si(OR.sup.2).sub.b O.sub.(4-a-b)/2in which each of R.sup.1 and R.sup.2 individually represents a substituted or unsubstituted monovalent hydrocarbon group, and a and b are in the ranges of 0.ltoreq.a<3, 0.001.ltoreq.b.ltoreq.4, and a+b.ltoreq.4, with(B) an epoxy compound containing at least one epoxy group and at least one hydroxyl group per molecule,in the presence of(C) a chelate compound selected from the group consisting of aluminum chelates and zirconium chelates.

Abstract: A silicone rubber composition comprising(A) 100 parts by weight of polyorganosiloxane having the formula: ##EQU1## wherein R.sup.1 is a substituted or unsubstituted monovalent hydrocarbon group with the proviso that from 0.01 to 0.3% of the R.sup.1 groups are vinyl groups, a is a number of from 1.98 to 2.0001, and n is a number of at least 3,000,(B) 10 to 100 parts by weight of finely divided silica,(C) more than 5 to 20 parts by weight of a polyorganohydrogensiloxane having the formula: ##EQU2## wherein R.sup.2 is a substituted or unsubstituted monovalent hydrocarbon group with the proviso that from 0.2 to 2.5% of the R.sup.2 groups are vinyl groups, b is a number of from 1.5 to 2.0, c is a number of from 0.01 to 0.5, the value of (b+c) is in the range of from 1.8 to 2.1, and m is a number of from 30 to 3,000, and(D) 0.01 to 3 parts by weight of organic peroxide.

Abstract: A heat-curable polysiloxane composition comprised of polydiorganosiloxane having at least 2 vinyl groups and polyorganohydrogensiloxane having at least 2 hydrogen atoms, and containing, as a catalyst, a platinum compound and a phosphorus compound or complex thereof, together with an organic peroxide compound which has no hydroperoxy group in the molecule.

Abstract: A curable silicone composition comprising 100 parts by weight of polyorganosiloxane containing at least 2 vinyl radicals bonded to silicon atom(s) in the molecule 0.1-10 parts by weight of polyorganohydrogensiloxane containing more than 2 hydrogen atoms bonded to silicon atom(s), on the average, in the molecule, 5-500 parts by weight of fine powder of a transition metal, and a catalytic amount of a platinum catalyst containing no halogen atoms in the molecule.

Abstract: A storage-stable, room-temperature-curing polysiloxane composition comprising polydiorganosiloxane having silanol terminal radicals and from 0.5 to 25 parts by weight, per 100 parts by weight of said polydiorganosiloxane, of a curing agent containing from 1.5 to 100 wt. % of silane having the formula ##STR1## wherein R.sup.3 is a substituted or unsubstituted hydrocarbon radical, Q is alkylene or alkylidene, R.sup.4 is ##STR2## wherein R.sup.6 and R.sup.7 are substituted or unsubstituted hydrocarbon radicals, R.sup.5 is hydrogen or a substituted or unsubstituted hydrocarbon radical, n is 1 or 2, a is 0 or 1 and b is 1, 2, 3 or 4, and the balance of the curing agent is tri-acyloxysilane.

Abstract: A silicone resin-mica composite comprising an organosiloxane resin, a mixture of acid phosphates and mica.

Abstract: A curable organopolysiloxane composition comprises (A) an organopolysiloxane having at least two alkenyl groups bonded to silicon atoms in which the silicon atom is attached to a monovalent hydrocarbon group containing a trialkoxysilyl group, an epoxy group or an ester group, (B) an organohydrogenpolysiloxane having at least three hydrogen atoms bonded to silicon atoms and (C) a catalyst of platinum or a compound thereof. It is improved in respect to the adhesion to metal, glass and plastics.

Abstract: A primer composition for an Si-H-olefin platinum catalyzed composition comprising an epoxy functional silane, an alkenyl-group-containing organosilicon compound, a vinyl acetate type of polymer, platinum, and an ester type of organic solvent.

Abstract: A room temperature curable polyorganosiloxane composition which comprises (A) 100 parts by weight of .alpha.,.omega.-dihydroxypoly(diorganosiloxane) having a viscosity of 20 to 1,000,000 cp measured at 25.degree. C. and being represented by the following general formula:HO(R.sup.1.sub.2 SiO).sub.n Hwherein R.sup.1 stands for a monovalent substituted or unsubstituted hydrocarbon group and two R.sup.1 groups may be the same or different, and n is a number satisfying said requirement of the viscosity,(B) 0.1 to 30 parts by weight of an aminoxy group-containing organic silicon compound having at least two organoaminoxy groups on the average in the molecule, and (C) 0.001 to 20 parts by weight of a compound having at least one isocyanate group in the molecule.

Abstract: A room temperature curable polyorganosiloxane composition comprising (A) 100 parts by weight of a silanol-terminated polydiorganosiloxane having a viscosity of 500 to 200,000 cSt measured at 25.degree. C., (B) 0.5 to 25 parts by weight of an acetoxy group-containing organic silicon compound selected from the group consisting of acetoxy group-containing silanes represented by the following formula and partially hydrolyzed products thereof: ##STR1## wherein R.sup.1 stands for a monovalent substituted or unsubstituted hydrocarbon group, R.sup.2 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, a is a number of 0 or 1, and b is a number of 0 or 1,and (C) 0.01 to 10 parts by weight of the reaction product of the reaction between (1) an aminoalkyl group-containing organic silicon compound selected from the group consisting of aminoalkyl group-containing silanes represented by the following formula and partially hydrolyzed products thereof: ##STR2## wherein R.sup.

Abstract: Room temperature vulcanizable polyorganosiloxane composition comprising (A) 100 parts of polydiorganosiloxane in which 0.1 to 25 mole percent of the total organo groups that are attached to silicon atoms are phenyl groups, and having a viscosity of 100 to 1,000,000 cSt at 25.degree. C., and in which silanol-terminated polydiorganosiloxane constitutes more than 60 weight % of the total, (B) 0.1 to 50 parts of an organic silicon compound containing aminoxy groups, (C) 75 to 300 parts of aluminum hydroxide powder having a size of less than 50 microns and (D) 0.000001 to 0.005 parts, calculated platinum, of platinum or a compound thereof. The composition is curable at room temperature whereby it gives an elastomer having low modulus, high elongation, and a self-extinguishing property.

Abstract: Silicone rubber compositions comprising (A) a diorganopolysiloxane in which the organo substituents are 0.01 to 2 mole % vinyl groups, 0 to 10 mole % phenyl groups and the remainder is alkyl groups, (B) an organohydrogenpolysiloxane, (C) a (O) valent platinum-(III) phosphor complex and, optionally, (D) a filler. These compositions can be cured with steam. Foamable compositions comprising (A), (B), (C) and hydrophobicized wet-process silica.