Abstract: A hard, abrasion resistant varnish, for coating the surfaces of solid substrates, comprises a solution in a mixture of solvents:a--4 to 90% by weight, in relation to the total of constituents (a), (b) and (c), of a colloidal silica,b--9 to 95% by weight, in relation to the total of constituents (a), (b) and (c), of the product of hydrolysis and partial condensation of at least one trialkoxysilane;c--1 to 87% by weight, in relation to the total of constituents (a), (b) and (c), of the product of hydrolysis and partial condensation of at least one epoxidized trialkoxysilane;d--0.5 to 9% by weight, in relation to the total of constituents (a), (b) and (c), and (d), of a soluble melamine-formaldehyde and urea-formaldehyde resin.The varnish can optionally contain an acid hardener and secondary adjuvants such as dyes, film tension agents and agents for protection from light.The varnish in contact with the solid substrate to be coated is hardened by heating at about 120.degree. for a time not exceeding 2 hours.

Abstract: A wax composition for waxing skis comprising a wax matrix having incorporated therein a silicone polymer of relatively low volatility.

Abstract: Esters and urethanes of certain polydialkylsiloxanepolyoxyalkylene block and graft copolymers which impart high voltage stabilization to dielectric olefin polymers, the stabilized olefin polymer insulating materials resulting therefrom and electric wire or cable insulated therewith.

Abstract: The coating composition, e.g. paints and lacquers, prepared according to the invention is imparted with greatly improved surface properties of the coating film formed therefrom in respect of the resistance against peeling of the coating film and decreased blocking by virtue of the unique additive which is an organopolysiloxane having, in a molecule, at least one organosiloxane unit having a 2,3-dihydroxypropylamino-substituted group such as --C.sub.3 H.sub.6 --NH--CH.sub.2 --CHOH--CH.sub.2 OH and --C.sub.3 H.sub.6 --NH--CH.sub.2 CH.sub.2 --NH--CH.sub.2 --CHOH--CH.sub.2 OH bonded to the silicon atom.

Abstract: Thermoplastic polymers or resins containing amide groups such as the nylons can readily be brominated or chlorinated in organic solvents to convert the (--NH--) units to (--NBr--) or (--NCl--) units and to form solutions of the N-brominated or N-chlorinated thermoplastic polymers or resins. These N-brominated or N-chlorinated thermoplastic polymer or resin solutions can be blended with silicones (siloxanes) and optionally with at least one finely divided material selected from the group consisting of inorganic and organic fillers and pigments and then can be coated on a cellular or solid rubbery hydrocarbon polymer substrate, such as an EPDM rubber in the form of a weatherstrip or glass run channel, dried and irradiated with ultraviolet light or heated at a temperature and for a period of time sufficient to reform the amide groups and to provide the rubbery substrate with an adherent and abrasion resistant coating which also exhibits a reduced coefficient of friction.

Abstract: A sealant material that is relatively chemically inert toward plastics and adhesives is comprised of a homogeneous mixture of polymeric adipate polyester and fumed silica, the polyester comprising about 80 to 85 percent by weight of the mixture and the fumed silica comprising about 15 percent to 20 percent by weight of the mixture. In the preferred embodiment, the sealant material further contains about 0.02 to 0.04 percent of an organofunctional silane and about 0.03 percent to 0.07 percent of a fluorosurfactant.

Abstract: A polymer composition is provided comprising at least one poly(arylene sulfide), at least one polysiloxane, at least one trialkoxysilane, and at least one solid, resinous polyolefin. Molded objects made of this polymer composition have greater impact strength than those made of poly(arylene sulfide), preferably poly(phenylene sulfide). In one embodiment, an additive composition comprising at least one polysiloxane, at least one trialkoxysilane and at least one solid, resinous polyolefin is provided. The additives can be blended with poly(arylene sulfide) so as to improve its impact strength. In another embodiment, a polymer composition is provided comprising at least one poly(arylene sulfide), at least one polysiloxane having molecular in the range of from about 100,000 to about 400,000, and optionally at least one trialkoxysilane.

Abstract: A polyphenylene sulfide resin composition comprising (1) a polyphenylene sulfide resin having a melt flow value of at least 1,000 g/min., (2) silicic acid and/or a silicate, and (3) a silane compound composed of a vinylsilane and an aminosilane and/or an epoxysilane.

Abstract: This invention provides a fluorocarbon resin aqueous coating composition comprising:(a) a fluorocarbon resin, and based on the amount by weight of the resin(b) about 1 to about 10% by weight of a silicone emulsion (calculated as silicone oil contained),(c) about 1 to about 40% by weight of a flaky inorganic material, and(d) about 3 to about 10% by weight of a nonionic surfactant, or a mixture of nonionic surfactant and anionic surfactant,the composition containing about 25 to about 75% by weight of water based on the whole composition.

Abstract: A rubber composition useful for shaping a vibration-damping rubber article is formulated with a synthetic rubber, which is preferably an organopolysiloxane gum, a finely divided silica filler having a specific surface area of at least 50 m.sup.2 / g and a specific .alpha.,.omega.-dihydroxy diorganopolysiloxane expressed, for example, by HO--SiMePh--O.sub.m H, in which Me is a methyl group, Ph is a phenyl group and m is a positive integer of 2-20.

Abstract: There is provided curable compositions of free-radical polymerizable organic monomers and polymers and cyclicsilylpinacoles which can be used in combination to make such curable compositions.

Abstract: A polyurethane resin composition which comprises (1) a polyurethane prepolymer in the form of liquid or solution, (2) colloidal silica and (3) a siloxane compound having a polyoxyethylene chain in the molecule maintains an excellent thixotropy even after solvents and additives are added and kneaded as the case may be.

Abstract: Compounds of the formulae I and II ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently hydrogen, alkyl of 1 to 18 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 18 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 12 carbon atoms,R.sup.6 and R.sup.7 are independently alkyl having 1 to 30 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 18 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 12 carbon atoms;A is a direct bond, a methylene or an ethylene radical,B is an alkanediyl radical of 2 to 10 carbon atoms, the radical of formula --CH.sub.2 CH.sub.2 --S--CH.sub.2 CH.sub.2 -- or of the formula III--CH.sub.2 CH.sub.2 --(O--CH.sub.2 CH.sub.2).sub.

Abstract: A coating composition substantially prevents fraying of glass fiber yarn packages. The composition is composed of an aqueous solution of a resin formed of the hydrolysis product of a copolymer of vinyl aromatic monomer and maleic anhydride, an organo silane glass fiber anchoring agent and an effective amount of a water-soluble pyrrolidone-containing polymer sufficient to form a protective film over the glass fiber.

Abstract: Power transmission belts have a cushion stock which improves the durability of the belts. The cushion stock contains a melamine and a silane and preferably cotton reinforcement and silica. 2-thiazolidinethiones can be used as accelerators in the cushion stocks.

Abstract: This invention relates to a dispersion of a functional silicone modifier in a curable epoxy resin wherein emulsification of said silicone is aided by a siloxane-polyoxyalkylene copolymer. The silicone modifier comprises an alpha,omega-functional polydimethylsiloxane having carboxyl, amine or epoxide endgroups. A method of using the dispersion to improve the impact resistance of the resin, when the latter is cured, is described.

Abstract: The invention is directed to bis-(2-ethylamino-4-diethylamino-s-triazin-6-yl)-tetrasulfide and a process for its production from the corresponding mercaptotriazine. The compound of the invention is employed in vulcanizable mixtures as a cross-linker or as vulcanization accelerator.

Abstract: The invention provides an efficient method for releasing a shaped body of a polymeric material such as a foamed polyurethane resin from a mold in which the body has been molded without the problem of adhesion to the mold. The inventive method comprises admixing the polymeric material with a specific organopolysiloxane represented by the structural formulaR.sup.1.sub.3 Si--O--SiR.sup.2.sub.2 --O).sub.m (SiR.sup.2 A--O).sub.n SiR.sup.1.sub.3,in which A is a substituent group represented by the general formula --C.sub.x H.sub.2x --O--R, R being a monovalent hydrocarbon group having 8 to 30 carbon atoms but free from terminal unsaturation and x being zero or a positive integer not exceeding 4, R.sup.1 is a monovalent hydrocarbon group or the same group as A, R.sup.2 is a hydrogen atom or the same group as R.sup.1, and m and n are each zero or a positive integer with the proviso that at least one group denoted by A is contained in a molecule of the organopolysiloxane.

Abstract: Coating compositions and molding materials containing a polyester group containing siloxane to enhance spreading and increase lubricity, having the formula ##STR1## wherein R.sub.1 represents alkyl groups with 1 to 30 carbon atoms which may be replaced partially by other groups,A and B each represent --CH.sub.3 or R.sub.2 --Z--,R.sub.2 represents an aliphatic and/or cycloaliphatic and/or aromatic polyester group free of Zerewittinoff H atoms, having an average molecular weight of 200 to 3000, and containing at least three ##STR2## groups, Z represents a divalent group connecting the silicon atom with the R.sub.2 group,x is 3 to 250,y is 0 to 50,and in which the average molecule contains at least one R.sub.2 --Z-- group and the ratio of the number of R.sub.2 --Z-- groups to x is 1:2 to 1:40.

Abstract: Siloxane fluid blends containing a thiofunctional polysiloxane fluid and an organopolysiloxane fluid are stabilized against degradation in the presence of kaolin clays at elevated temperatures by adding an amine containing compound to blends of siloxane fluids.

Abstract: Disclosed herein are inert monovalent hydrocarbon terminated polysulfide copolymers having the general structure ##STR1## wherein n is an integer from about 2 to about 8, l is zero or a positive integer, m is a positive integer, each R is independently an organic polyradical with the radicals residing on carbon atoms, p is zero or a positive integer which is the difference between the number of radicals on R and 2, and each Y is a terminal substituent that is an inert monovalent hydrocarbon radical.

Abstract: A composition comprising a polyolefin and an additive selected from cyclic siloxanes containing at least one aromatic group attached to silicon; linear siloxanes containing at least one aromatic group and a silanol content greater than 0.4 weight percent, and linear siloxanes containing at least one aromatic group and having a functional group convertible to a silanol content of greater than 0.4 weight percent by ambient hydrolysis conditions.

Abstract: Disclosed herein is an adhesive composition which contains specific amounts of (A) an aqueous emulsion, (B) a filler and (C) a resin solution of a resinous tackifier dissolved in a solvent and/or plasticizer. The adhesive composition has a fast setting time in adhesion strength and excellent water-proofness and hence produces superb adhesion force even when applied to a fresh mortar base which has been aged insufficiently.

Abstract: Thiofunctional polysiloxane fluids are stabilized against degradation in the presence of kaolin clay by adding an amine containing compound to the thiofunctional polysiloxane fluids.

Abstract: Hindered silane compounds of the formula ##STR1## are prepared by the reaction of the appropriate silane and phenol compounds, said hindered silanes being useful as stabilizers of organic polymers such as polyolefins, vinyl halide polymers, elastomers, polyesters and polycarbonates.

Abstract: A polylaurolactam mold is being produced by that a laurolactam melting at first is being mixed with a catalyst and the mixture afterwards being compounded with an activator and polymerized, whereby the polymerizing material is being cast to threads or cords and the reduced material is being injection molded at temperatures of 430.degree. F. to 490.degree. F. and at pressures of 50.10.sup.5 to 100.10.sup.5 Pa, whereby, according to the invention, before the molding 0.1 to 5 wt. % silicon fat is added to the granules. The then resulting molded products, especially protective helmets and protective plates, are distinguished by superior physical properties.

Abstract: A process for stabilizing organopolysiloxanes against changes in viscosity which comprises reacting organopolysiloxanes containing phosphonitrile chlorides or reaction products thereof with at least one lithium compound which forms lithium chloride when reacted with the chlorine bonded to the phosphorous compound.

Abstract: A coating system especially useful on transparent plastic substrates is provided which includes: (1) an initial primer coat of polymethylmethacrylate in a solution of ethylene glycol monoethyl ether and diacetone alcohol, containing a small amount of an ultraviolet light absorbing compound, or a combination of an ultraviolet light absorbing compound and an ultraviolet radiation stabilizing agent, and (2) a secondary coat of a silicon resin coating composition. Such a coating system has a longer service life and improved resistance to delamination and discoloring compared to silicone resin coatings used with unmodified primers or coatings where ultraviolet light absorbers are added to the resin component only. Moreover, modification of the primer according to the invention will not significantly decrease the desirable adhesion properties, abrasion-resistance and optical clarity of silicone resin coating compositions.

Abstract: Ultraviolet radiation resistant silicone resin coating compositions are provided having improved thermoformability. Improved thermoformability and shortened required aging are achieved by the addition of a Lewis acid compound to the coating compositions is disclosed. Thermoformability is also improved by using the UV screen containing silicone resin coating composition in conjunction with extensible acrylate primers.

Abstract: An aqueous organosilicon composition is prepared by mixing water with an organopolysiloxane having at least one ##STR1## group and having aliphatic radicals which are bonded to silicon via oxygen, a polyvinyl alcohol and/or a water-soluble cellulose ether containing hydroxyl groups in the presence of sufficient acid to provide a composition having an acid pH. The resultant composition may be neutralized and used as additives in aqueous paint compositions.

Abstract: The impact strength of thermoplastic poly(ethylene terephthalate) molding compositions containing a reinforcing filler (preferably glass fiber), an epoxidized crystallization promoter (e.g., an epoxidized vegetable oil) and a nucleating agent (e.g., sodium stearate) is markedly improved by including in the composition a small amount of an organofunctional silane, i.e., a compound characterized by having a functional substituent at the end of a methylene chain bound to a silicon atom to which are also bonded a plurality of readily hydrolyzable groups. A few such compounds are gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane and gamma-glycidoxypropyltrimethoxysilane. The formulations may also contain a warp-reducing filler such as mica. Organofunctional silanes typically have application in thermoplastic polymers only as coupling agents, i.e.

Abstract: A carbon resistive paste comprising an electrically conductive component, such as carbon; an inorganic filler, such as silica; a resin component, such as an epoxy resin; a solvent, such as ethanol and; if necessary, an organic filler, wherein the inorganic filler is treated with a silane coupling agent, such as .gamma.-glycidoxypropyltrimethoxy silane. The carbon resistive paste provides a resistive film which has limited changes in resistance value in use and is superior in strength.

Abstract: An unfilled polymeric composition having improved electrical treeing and water treeing properties comprising a polymeric component and effective amounts of a silane and a fatty acid. The compositions are particularly useful as insulation for high voltage transmission and distribution cables.

Abstract: One-part moisture-curable polyurethane adhesive, coating, sealant, or casting compositions containing a blend of isocyanate-functional prepolymer, terpene-phenolic resin, and silane compound. The compositions adhere to a variety of unprimed substrates, and resist moisture and UV exposure.

Abstract: The present invention provides a room temperature curable polyorganosiloxane composition comprising:(A) 100 parts by weight in total of:(1) a polydiorganosiloxane of the general formula: ##STR1## (2) a silane of the general formula:R.sub.b.sup.3 Si(OR.sup.4).sub.4-b(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 in which the nitrogen atom is bonded with a silicon atom through one or more carbon atoms and said nitrogen atom is further bonded directly with said silicon atom or another silicon atom; and(D) 0.05 to 50 parts by weight of a polyoxyalkylene chain-containing compound.

Abstract: Flame retardant thermoplastic compositions are described which comprise 30-98% by weight thermoplastic, 1-40% by weight of a silicone fluid, 1-20% by weight of metal soap precursors and 1-20% by weight of a silicone resin. Such compositions offer simpler processing, improved impact resistance and other advantages over conventional flame retardant thermoplastic compositions.

Abstract: An aqueous primer based on alkali-soluble acrylic resins and siliconates, especially suitable for strongly alkaline substrates, for example, asbestos cement articles, is provided. The primer is characterized by stability to storage and good compatibility with the substrate and with customary coating agents, and it brings about good water repellence, good stabilization of the substrate and a good binding between the substrate and the final coating.

Abstract: Olefin polymer compositions containing silicone additives which can be extruded through relatively narrow die gaps at commercial extrusion rates to provide film material characterized by improved mechanical and optical properties. The silicone additives have the formula: ##STR1## wherein each R, which can be the same or different, are alkyl radicals, R.sup.1 is a monovalent organic radical containing at least one ethyleneoxide group, vicinal epoxy group or amino group and x and y, which can be the same or different, each have a value of at least one.

Abstract: Thermoplastic compositions of a polyphenylene ether resin and a precompounded blend of a poly(arylolefin-olefin), an organopolysiloxane and a linking agent are described. The precompounding of the organopolysiloxane with a poly(arylolefin-olefin) enables the compatible incorporation of larger amounts of organopolysiloxane than otherwise possible, and the resulting novel composition provides various desirable properties.

Abstract: An additive comprising at least one parting agent is added to a particle form evaporator to reduce the buildup of polymer on the walls and rotor of the agitated bed of the particle form evaporator. In an alternate embodiment, the additive employed further comprises at least one filler.

Abstract: Properties such as flow rate and hydrolytic stability of glass-filled polyarylene sulfide compositions can be modified by the addition of certain organosilanes.

Abstract: Elastic molding materials based on thermoplastic rubber containing at least one silicate filler and an organosilicon compound having at least one alkoxy group are described together with a method of producing and shaping it and its application and use thereof in molded articles such as shoe soles.

Abstract: A textile finishing composition comprising (1) a diluent and (2) a durable press resin composition containing (a) an aminoplast resin and (b) an aldehyde. The textile finishing composition is combined with an acid catalyst and applied to textile materials to impart softness, improved wetting properties and durable press properties.The textile finishing composition is applied at lower than normal dry add-on levels to textile materials to provide textile materials having lower levels of formaldehyde.

Abstract: The varnish comprises a plasticizing resin, a diluent, a matting compound and an epoxy silane compound, this latter having excellent antireflection characteristics and enabling the varnish also to adhere to smooth glass. At the moment of use, a catalyst is added to the varish, the catalyst being an amino silane compound which causes the epoxy compound to polymerize, so that the varnish layer becomes resistant to abrasion and to chemical agents. The varnish can also be colored with aniline dyes such as aniline green and aniline yellow. On varnishing, the tube is first degreased, then varnished with several layers, and finally baked at a temperature of between 80.degree. and 150.degree. C. for a time sufficient to cause polymerization of the compound.

Abstract: Tetrafluoroethylene polymer coating dispersions when coated on glass fabric improve flex life of the fabric if the dispersions contain a selected silane, siloxane, water repellant, and polyethylene oxide surfactant of the formula C.sub.9 F.sub.17 O(CH.sub.2 CH.sub.2 O).sub.5 CH.sub.3.

Abstract: Blends of polyols and polyamines containing internal mold release agents consisting of certain polysiloxanes having pendant organic groups which have functional hydroxyl, amino or mercapto groups are useful in preparing mold releasable resin moldings when made by the reaction injection molding technique.

Abstract: Hindered silane compounds of the formula ##STR1## are prepared by the reaction of the appropriate silane and phenol compounds, said hindered silanes being useful as stabilizers of organic polymers such as polyolefins, vinyl halide polymers, elastomers, polyesters and polycarbonates.

Abstract: The invention is directed to a liquid polyisocyanate dispersions containing an unreacted polysiloxane mold release agent which has isocyanate reactive groups. Specifically, the invention is directed to polyol modified diphenylmethane diisocyanates having dispersed therein a polysiloxane compound having pendant organic chains which contain at least one hydroxyl, amino or carboxyl functional group and a silicone dispersing or inhibiting agent substantially free of isocyanate reactive 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: Solid copolymers are produced by copolymerizing a mixture of: (A) at least 30% by weight of a monomer having the formula: ##STR1## wherein R.sub.1 is H or CH.sub.3 and R.sub.2 is an alkyl radical containing from 1 to 14 carbon atoms; (B) from 3 to 20% by weight of an ethylenic .alpha.,.beta. unsaturated carboxylic acid or anhydride thereof, or from 3 to 40% by weight of glycidyl acrylate or glycidyl methacrylate; and (C) from 0 to 67% by weight of a monomer copolymerizable with said monomers (A) and (B). Preferably, the mixture is first bulk-polymerized until conversion to the copolymer is from 10 to 80% by weight and the polymerization is completed by suspension-polymerization. Thermosetting solid coating compositions are produced by mixing a major proportion of a solid copolymer so produced with a minor proportion of a cross-linking compound or with an epoxy resin containing at least 2 epoxy radicals in the molecule in presence of a tertiary amine curing accelerator.