Abstract: Stable, substantially acid-free, one package, moisture curable RTV compositions are provided having a scavenger for chemically combined hydroxy groups of the formula ##STR1## where x equals 1 or 2 and y equals 0 to 3 inclusive. A method for providing the aforesaid moisture curable RTV compositions is also provided. Novel compounds of the formula ##STR2## where x equals 1 or 2 and y equals 0 to 2 inclusive are provided as are methods for making such novel compounds.

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: There is provided a flame retardant composition comprising:(a) about 50 to about 90 percent by weight of one or more nylon materials, and(b) about 10 to about 50 percent by weight of a composition effective for imparting flame resistance comprising:(i) about 20 to about 75 percent by weight based on (b) of diphenylsilanediol, low molecular weight phenyl substituted siloxane diol, or mixture thereof;(ii) about 3 to about 30 percent by weight based on (b) of Group IIA metal carboxylic acid salt;(iii) about 10 to about 60 percent by weight based on (b) of aluminum trihydrate; and(iv) about 10 to about 50 percent by weight based on (b) of organic halide.

Abstract: Stable, substantially acid free, one package organopolysiloxane compositions are provided which have a base polymer, a condensation catalyst, a silane scavenger for hydroxy functional groups having cycloaliphatic enoxy functionality, and a curing accelerator, said compositions being curable upon exposure to atmospheric moisture to translucent and colorless tack-free elastomers.

Abstract: There is provided a one package RTV composition which is convertible to a tack-free elastomer comprising:(A) a polydiorganosiloxane base polymer,(B) an effective amount of a condensation catalyst, and(C) a stabilizing amount of organic scavenger for hydroxy groups which has the formula:R--N.dbd.C.dbd.O).sub.xwhere R is a linear or cyclic aliphatic compound or an aromatic compound, and x equals at least 1.

Abstract: There is provided a one package silicone RTV composition which is convertible to a tack-free elastomer, comprising:(A) a polydiorganosiloxane base polymer,(B) an effective amount of condensation catalyst,(C) a stabilizing amount of scavenger for hydroxy functional groups wherein said scavenger contains at least one silicon-bonded hydrogen;(D) optionally, a crosslinking silane;(E) optionally, a cure accelerator; and(F) optionally, a scavenger for hydrogen gas.

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 solventless release coating composition is provided as well as a method for rendering materials nonadherent to other materials which would normally adhere thereto. The coating composition is a precious metal catalyzed silicone composition comprising a vinyl functional polysiloxane base polymer and a methylhydrogen cross-linking agent. A blend of diallylmaleate and vinyl acetate is added to the composition in order to extend the useful pot-life of the product by inhibiting premature cross-linking.

Abstract: A silicone resin comprising 100 parts by weight alkylsiloxane units selected from the group consisting of RSiO.sub.1.5 units and R.sup.1 R.sup.2 SiO units and mixtures thereof, wherein R, R.sup.1 and R.sup.2 are independently selected alkyl radicals having from 1 to about 8 carbon atoms, and from about 75 to about 2100 parts by weight .beta.-phenylethylsiloxane units of the formula ##STR1## so as to provide a silicone resin which exhibits increased reactivity with organic compositions and which provides ultraviolet light and weathering resistance.

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 dirt resistant silicone coating composition comprising:(1) a base vinyl chainstopped polysiloxane,(2) a resinous organopolysiloxane copolymer,(3) a platinum catalyst and,(4) a liquid organohydrogenpolysiloxane crosslinking agent.

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: A polishing agent composition containing a polyorganosiloxane preparation comprising:(A) from 4 to 40% by weight of a benzene soluble polyorganosiloxane resin comprising:(1) 70 to 100 mole percent (R.sup.1).sub.3 SiO.sub.1/2 units, and(2) 0 to 30 mole percent (R.sup.2).sub.2 SiO units and having Si bonded OR.sup.3 groups;(B) from 55 to 95% by weight of a liquid linear or branched polyorganosiloxane terminated by (HO)(R.sup.4).sub.2 SiO.sub.1/2 units or (R.sup.4).sub.3 SiO.sub.1/2 units, and whose units other than the terminal units comprise 90 to 100 mole percent (R.sup.5).sub.2 SiO units and 0 to 10 mole percent(R.sup.5).sub.a SiO.sub.

Abstract: A two-component room temperature vulcanizable polysiloxane composition curable in the presence of a heat-activated catalyst is disclosed. The working life of a condensation curable organopolysiloxane containing terminal silicon-bonded hydroxy groups in a first component is extended by using a metallic salt of an organic carboxylic acid catalyst in a second component by providing in combination with the metallic salt of an organic carboxylic acid catalyst, a solid, inert barrier material capable of melting at an elevated temperature, whereby the catalyst is activated when heat applied thereto, melts the solid barrier material. A cross-linking agent and optionally, a filler, are used in the components. In one embodiment, the catalyst is a tin carboxylate used as a core material and the solid, inert barrier material is calcium stearate used as a wall material to encapsulate the catalyst material.

Abstract: A foam-forming organopolysiloxane composition comprising:(A) 100 parts by weight of .alpha.,.omega.dihydroxydiorganopolysiloxane;(B) 0.05-50 parts by weight of a low molecular weight .alpha.,.omega.dihydroxydiorganopolysiloxane;(C) 0.5 to 30 moles Si-H per mole SiOH of (A) and (B) as an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; and(D) 0.1 to 200 ppm of a platinum-containing compound.

Abstract: Silicone elastomeric compositions suitable for ultraviolet ray curing comprising:(A) 100 parts by weight of a polyorganosiloxane of the general formula:(CH.sub.3).sub.2 R.sup.1 SiO--R.sub.2.sup.2 SiO].sub.n SiR.sup.1 (CH.sub.3).sub.2 (1)wherein R.sup.1 represents hydrogen or a monovalent radical selected from the group consisting of methyl, vinyl, and hydroxy, R.sup.2 represents hydrogen or a substituted or unsubstituted monovalent hydrocarbon radical, 0.02-49.95% based on the total number of R.sup.1 and R.sup.2 groups are vinyl radicals 0.05-49.98% based on the total number of R.sup.1 and R.sup.2 groups are hydrogen and n represents a number from 10-10,000.(B) 0.5-10 parts by weight of a polyorganosiloxane having an average formula: ##STR1## wherein R.sup.3 represents a substituted or unsubstituted monovalent hydrocarbon radical other than vinyl, a represents a number of 0.01.ltoreq.a.ltoreq. in an average, and b represents a number of 0.ltoreq.

Abstract: The present invention provides a method for preparing a precious metal catalyzed, heat curable silicon release coating composition. Also, there is provided an article of manufacture for packaging the ingredients necessary to practice the method of the invention.

Abstract: A method of protecting silver contacts in switches for electronic equipment is provided by utilizing a silicone-based grease which is comprised of a polyorganosiloxane base in combination with a thickener such as finely divided silica or a metal soap and an organomercaptan compound represented by R.sup.2 SH wherein R.sup.2 represents a saturated or unsaturated aliphatic hydrocarbon group having 18 to 22 carbon atoms. There may also be optionally included an ester bond-containing organic compound for improved properties when the treated silver contacts have relatively high contact pressure.

Abstract: A method of reducing the density of a silicone foam is provided comprising mixing with a foamable silicone composition having a base polydiorganosiloxane, an effective amount of a resinous copolymer selected from the group consisting of resinous copolymers of R.sub.3 SiO.sub.0.5 units and SiO.sub.2 units, and ratio of R.sub.3 SiO.sub.0.5 units ranging from 0.25 to 0.8:1, and resinous copolymers formed from R.sub.3 SiO.sub.0.5 units, R.sub.2.sup.1 SiO units and SiO.sub.2 units, the ratio of R.sub.3 SiO.sub.0.5 to SiO.sub.2 units ranging from 0.25 to 0.8:1 and the ratio of R.sub.2.sup.1 SiO to SiO.sub.2 units ranging from 0 to 0.1:1, and thereafter simultaneously foaming and curing the mixture.

Abstract: There is provided a method for preparing .beta.-phenylethylchlorosilanes comprising forming a mixture of styrene, a chlorosilane having at least one silicon-bonded hydrogen atom, a platinum catalyst and a tertiary amine, and heating the mixture in order to effect addition of the chlorosilane to styrene.