Abstract: Compositions of hydroxyl endblocked polydiorganosiloxanes and tetrafunctional ethoxy-ketoximo silane mixtures containing tetraketoximosilane, monoethoxytriketoximosilane, diethoxydiketoximosilane, and triethoxymonoketoximosilane provide one package room temperature compositions. Exposing these compositions to moisture results in a rapid cure without the use of a curing catalyst.

Abstract: Polyorganosiloxane compositions for surface treatment comprising:(A) a polydiorganosiloxane having a viscosity of 50 cSt to 10,000,000 cSt at 25.degree. C., the terminal units of which are blocked by hydroxy groups;(B) a curing agent which comprises a mixture or a partially reacted mixture of:(1) a polyorganosiloxane composed of structural units represented by the formula:(R.sup.1).sub.a SiO(.sub.4-a)/2wherein, R.sup.1 s are the same or different and each represents a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbyl group and at least two R.sup.1 s out of the total R.sup.1 s in a molecule are monovalent hydrocarbyl groups substituted by an epoxy-containing group; and a represents an integer of 1 to 3, and having a polymerization degree of 10 to 5,000;(2) a silane and/or a siloxane having a substituted or unsubstituted amino group bonded to a silicon atom via at least one carbon atom and also having at least one alkoxy group bonded to a silicon atom;at a proportion of 0.

Abstract: A method for treating a solid material to give it hydrophilic and/or antistatic properties comprises applying a composition containing a silicone compound to the material which has one or more alkoxysilylalkyl groups and one or more polyoxyalkylene groups. In a preferred embodiment the method is used to treat fibers and fiber-containing materials. The composition can further contain a curing agent for the silicone. Emulsion compositions are particularly useful.

Abstract: Organosiloxane-oxyalkylene copolymers in which a silicon atom of at least one organosiloxane unit has attached thereto the group--X(OR).sub.n OSiR'.sub.a (OR").sub.3-awherein X represents a divalent hydrocarbon group, R represents an alkylene group having 2 to 4 carbon atoms, n is an integer of at least 2, R' represents alkyl, vinyl, allyl or phenyl, R" represents alkyl or alkoxyalkyl and a has a value of 1 or 2, at least 40% of the total substituents in the copolymer being methyl.The copolymers are film forming and are particularly suitable for the treatment of textile fibres to facilitate the removal of oily stains during laundering.

Abstract: Photo-curable vinyloxy-functional organosiloxane polymers are provided. Also provided are release coating compositions made by combining said polymers with various photo-initiators. The polymers have a unique vinyloxy functionality; and the release coating compositions cure with brief exposure to ultraviolet radiation to form premium abhesive coatings. Process for preparing the vinyloxy-functional polysiloxanes and the release coating are also disclosed.

Abstract: Composition comprising the product obtained by mixing (A) a silanol-terminated polydiorganosiloxane; (B) a silicon compound having at least 3 silicon-bonded alkoxy or alkoxyalkoxy groups in the molecule; (C) a metal or organometal salt of a carboxylic acid; (D) a silane having silicon-bonded alkoxy or alkoxyalkoxy groups and a silicon-bonded group, --R'NHR, in which R' is alkylene and R represents H, alkyl or an aliphatic hydrocarbon group containing at least one amino group, and (E) a silane having silicon-bonded alkoxy or alkoxyalkoxy groups and a silicon-bonded group containing an epoxy group.The compositions cure to elastomers having improved adhesion to glass, aluminium and concrete and are suitable for use as sealants for buildings.

Abstract: Vinyl-containing polysilanes of the average formula[R.sub.2 Si][RSi][R.sub.d '(CH.sub.2 .dbd.CH)Si]where R is an alkyl radical containing 1 to 4 carbon atoms, R' is an alkyl radical containing 1 to 4 carbon atoms, a vinyl radical, or a phenyl radical, d is 1 or 2 and where the polysilane contains 0 to 60 mole percent [R.sub.2 Si] units, 30 to 99.5 mole percent [RSi] units, and 0.5 to 15 mole percent [R.sub.d '(CH.sub.2 .dbd.CH)Si] units are disclosed. The vinyl-containing polysilanes may be converted to silicon carbide-containing ceramics by pyrolysis in an inert atmosphere or in a vacuum at temperatures greater than 800.degree. C. Shaped articles prepared from the vinyl-containing polysilanes may be rendered infusible prior to pyrolysis by exposure to air or ultraviolet light.

Abstract: The present invention relates to an alkoxy-functional one-component RTV system in which the base polymer composition comprises a polyalkoxy-terminated diorganopolysiloxane polymer and a mono alkoxy-terminated diorganopolysiloxane polymer. In an alternate embodiment, the base polymer composition comprises a diorganopolysiloxane polymer having just one alkoxy group and at least one hydrolyzable leaving group on the terminal silicon atoms.

Abstract: An organosilicon polymer whose main-chain skeleton is composed mainly of following structural units (A), (B), (C), (D), (E) and (F) ##STR1## wherein R represents CH.sub.3 or H, said structural units forming linear, branched and cyclic structures, and said main-chain skeleton further having a polysilane skeleton ##STR2## (2.ltoreq.n.ltoreq.10). The said organosilicon polymer can be produced by adding at least one anhydrous metal halide to a polysilane having the structure ##STR3## the amount of the metal halide being 0.5 to 10% by weight based on the weight of the polysilane; and heating the mixture in an atmosphere inert to the reaction.

Abstract: The present invention provides a releasable film forming composition comprising (1) an organopolysiloxane having hydroxyl groups at the ends of the molecular chain, (2) a finely divided silica, (3) a phenyl-containing organosilane or organopolysiloxane, (4) an organohydrogenpolysiloxane containing at least three SiH groups per molecule, (5) a metallic salt of an organic acid and (6) an organic solvent, and a process for preparing same, as well as a releasable film forming composition comprising (1) an organopolysiloxane containing at least two silicon atom-bonded alkenyl groups per molecule, (2) a finely divided silica, (3) a phenyl-containing organosilane or organopolysiloxane, (4) an organohydrogenpolysiloxane containing at least two SiH groups per molecule, (5) a platinic compound and (6) an organic solvent, and a process for preparing same. These compositions exhibit a superior printability and a stable releasability from adhesive materials and are less slippery.

Abstract: Thermally imageable film comprising a polymeric substrate, a layer of imageable material coated over at least one major surface thereof, and a release coating coated over the layer of imageable material. The release coating is an organopolysiloxane applied from a composition which is curable at temperatures below about 70.degree. C. with a curing exposure time of under about 3 minutes, thereby preventing adverse effects upon the layer of imageable material.

Abstract: A coating composition comprising (a) a diorganopolysiloxane having 1 to 3 functional groups on each of both ends, (b) a diorganopolysiloxane having no functional group or having 1 to 3 functional groups on one end, and (c) a cross-linking agent having two or more functional groups capable of undergoing condensation or addition reaction with the functional groups is coated together with a solvent onto a printing plate or a printing part. The coating composition is ink-repellent and prevents an area to which ink is not to be applied from staining with ink by being coated onto the area.

Abstract: Vinyl-containing polysilanes of the average formula[R.sub.2 Si][RSi][R.sub.d.sup.' (CH.sub.2 .dbd.CH)Si]where R is an alkyl radical containing 1 to 4 carbon atoms, R' is an alkyl radical containing 1 to 4 carbon atoms, a vinyl radical, or a phenyl radical, d is 1 or 2 and where the polysilane contains 0 to 60 mole percent [R.sub.2 Si] units, 30 to 99.5 mole percent [RSi] units, and 0.5 to 15 mole percent [R.sub.d.sup.' (CH.sub.2 .dbd.CH)Si] units are disclosed. The vinyl-containing polysilanes may be converted to silicon carbide-containing ceramics by pyrolysis in an inert atmosphere or in a vacuum at temperatures greater than 800.degree. C. Shaped articles prepared from the vinyl-containing polysilanes may be rendered infusible prior to pyrolysis by exposure to air or ultraviolet light.

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: Silicone compositions are disclosed which comprise a liquid silicone resin, a vinyl-containing silicone resin, a siloxane polymer, and a hydrosilylation catalyst. The compositions cure to give unusually strong, fuel resistant coatings and elastomers.

Abstract: An improved molding process is provided which comprises treating a mold surface with certain curable silicone compositions to improve the release of molded articles from the mold. The silicone mold release composition is obtained by mixing predominately hydroxyl terminated polydimethylsiloxane, an alkoxysilane such as methyltrimethoxysilane, a metal alkoxide such as tetraalkyltitanate and a non-reactive, volatile solvent. The composition is stable if stored in containers that exclude moisture, but cures when exposed to moisture. Molds with surfaces coated by these compositions provide easy release of many successively molded articles such as high resiliency polyurethane foam cushions for automobiles.

Abstract: In accordance with the present invention, there is provided a one-component alkoxy-functional RTV silicone rubber composition in which all the ingredients are continuously mixed in, generally, a devolatilizing extruder. In a more preferred embodiment, the polyalkoxy diorganopolysiloxane polymer is first formed in a static mixer and then this polymer along with the other ingredients are continuously mixed in a devolatilizing extruder to continuously form a preferred alkoxy-functional one component RTV composition of the instant case.

Abstract: Polyorganosiloxanes that are curable to crosslinked solid material, at ambient temperature upon exposure to gaseous oxygen, wherein the polyorganosiloxane contains, per molecule, at least one monovalent olefinically polyunsaturated organic radical containing at least one 1,3-pentadienylene group or 1,4-pentadienylene group bonded to silicon through silicon-to-carbon bond and wherein any remaining valence of silicon is satisfied by a silicon-to-oxygen-to-silicon bond or by a monovalent organic radical free of more than one olefinically unsaturated group per monovalent organic radical, which monovalent organic radical is bonded to silicon by a silicon-to-carbon bond. Compositions are also described containing the novel polyorganosiloxanes, suitable driers either chemically combined in the polyorganosiloxane or physically mixed therewith. The compositions can also contain fillers, plasticizers and/or catalyst activators.

Abstract: Stable, substantially acid-free, one package moisture curable organopolysiloxane compositions are provided having a condensation catalyst such as a tin compound and novel scavenger or scavenger/crosslinker compositions. A method for making the aforesaid moisture curable organopolysiloxane composition is also provided.

Abstract: A one-component alkoxy-functional RTV silicone rubber composition which is made shelf-stable by the incorporation of scavengers in the composition to absorb hydroxy groups. The present composition is made low modulus by the incorporation of various additives in the composition such as a trifunctional fluid and a linear diorganopolysiloxane fluid. There is also disclosed the use of sag control additives in the uncured composition to impart to it thixotropic properties.

Abstract: Aliphatic aldehyde polymer containing at least one Si atom in its molecular chain is a positive type resist having a very high sensitivity to radiation such as electron beams, X-rays, ion beams, etc.

Abstract: The present invention relates to an alkoxy-functional one-component RTV silicone rubber composition having novel integrated cross-linker, scavenging compounds therein. The integrated cross-linker, scavenger compounds comprise acetamido functional siloxanes.

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: Disclosed is a liquid composition comprising a homogeneous reaction product of a hydrophobic polyol and an organosilicon-containing material. The organosilicon-containing material comprises an organosilicon-containing substance free of functional groups attached to carbon and essentially free of alkali metal ions, having atoms bonded directly to silicon, all of which atoms are selected from O, N, and/or Cl. The organosilicon-containing substance additionally has moieties directly bonded to silicon which are displaceable by reaction with water and/or alcohol. At least a part of the organosilicon-containing substance is hydrolyzed to a compound or a mixture of compounds containing a residual amount of the moieties directly bonded to silicon which are displaceable.

Abstract: Stable, substantially acid-free, one package moisture curable alkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst and a stabilizer or scavenger for materials having chemically combined hydroxy radicals in the form of a molecular sieve.

Abstract: Stable, substantially acid-free, one-package moisture curable alkoxy terminated organopolysiloxane compositions are provided. These room temperature vulcanizable alkoxy terminated organopolysiloxane compositions use a condensation catalyst, a stabilizer, or scavenger for materials having chemically combined hydroxy radicals and diorganosulfoxide, such as dimethylsulfoxide which functions as a cure rate accelerator.

Abstract: Organosiloxane-oxyalkylene copolymers in which at least one silicon atom of an organosiloxane unit has attached thereto a group ##STR1## in which X is a divalent hydrocarbon group, R is an alkylene group, n is an integer of at least 2, Z is an organic substituent containing an epoxy group, R' is lower alkyl, vinyl or phenyl, R" is alkyl or alkoxyalkyl and a is 0 or 1, at least 40 percent of the total substituents in the copolymer being methyl.The copolymers are film forming and may be applied to continuous or porous substrates from aqueous or non-aqueous solutions.

Abstract: A composition consisting essentially of (A) a polymer having at least one nitrogen-hydrogen bond; and (B) a readily hydrolyzable, anhydrous additive selected from the group consisting of titanates, zirconates, vanadates, germanates, and mixtures thereof is disclosed. The uniqueness of this invention is that the polymer is crosslinked upon exposure to moisture, such as water vapor but is reverted to noncrosslinked polymer after exposure to liquid water. Furthermore, the components can be stored together, in the absence of moisture, with no gelation.

Abstract: The present invention relates to an alkoxy-functional one-component RTV silicone rubber composition having therein novel scavenger compounds. The novel scavenger compounds comprise multi-amine functional silanes and amine functional siloxanes which can be either pure scavengers or integrated cross-linker, scavengers.

Abstract: Stable, substantially acid-free, one package moisture curable alkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst such as a tin compound, a silicon containing or silicon free organic scavenger for materials having chemically combined hydroxy radicals and certain organo nitrogen accelerators to effect a substantial enhancement in cure rate.

Abstract: Disclosed is a photocurable silicon compound composition which comprises a silicon compound having a silicon atom to which directly bonded is an o-nitrobenzyloxy group represented by the following formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may be same or different and each represents a hydrogen atom, a halogen atom, a nitro group, a cyano group, a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, a substituted or unsubstituted aryl group, an aryloxy group, an acyloxy group having 1 to 5 carbon atoms, a hydroxy group, a mercapto group, an acetyl group or an allyl group,and optionally a silanol-condensing catalyst.

Abstract: The adhesion of self-bonding, low modulus, one package, room temperature vulcanizable silicone compositions to a variety of substrates is effectively promoted by incorporation in the silicone composition, before curing, a small effective amount of an adhesion promoting composition comprising predominantly at least one diorganocyclopolysiloxane compound of the formula: ##STR1## wherein R.sup.1 may be C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 gamma-trihaloalkyl or phenyl; R.sup.2 is alkylene of from 2 to 6 carbon atoms; R.sup.3, R.sup.4 and R.sup.5 are, independently, C.sub.1 -C.sub.6 alkyl or C.sub.2 -C.sub.6 alkanoyl; and n is either 3 or 4.

Abstract: The adhesion of self-bonding, low modulus, one package, room temperature vulcanizable silicone compositions to a variety of substrates is effectively promoted by incorporation in the silicon composition, before curing, of a small effective amount of an adhesion promoting composition comprising at least one maleamidylalkyltrialkoxysilane or maleamidylalkyltriacyloxysilane compound of the formula: ##STR1## wherein A is divalent alkylene of from 2 to 6 carbon atoms and R.sup.1, R.sup.2 and R.sup.3 are, independently, C.sub.1 -C.sub.6 alkyl or C.sub.2 -C.sub.6 alkanoyl.

Abstract: A titanium chelate catalyst for a room temperature vulcanizable silicone rubber compositions which does not form nodules upon storage where the catalyst has the formula, ##STR1## where s varies from 0.7 to 1.3 and t varies from 0.7 to 1.3. Preferably s varies from 0.8 to 1.2 and t varies from 0.8 to 1.2.

Abstract: Agent for impregnating materials that contain cellulose, mainly paper and wood. The active ingredient is a mixture of alkali aluminate and alkyl silanols that exhibits an intense hydrophobing effect at low concentrations. The agent can be employed in aqueous solution, e.g. in an enclosed space without the special exhaust devices required with volatile solvents. The solution is storage-stable. It contains preferably between 0.1 and 2.0% by weight of alkyl silanol and between 0.03 and 0.1% by weight of alkali aluminate.

Abstract: Epoxy functional diorganosiloxane fluids are combined with bis-aryl iodonium salts, particularly linear alkylate bis-dodecylphenyl iodonium salts to form a silicone coating composition effective for rendering surfaces non-adherent to other surfaces which would normally adhere thereto, and which will cure to a final non-adherent state upon brief exposure to ultraviolet radiation. Adhesion of the silicone coating to a substrate can be improved with the addition of .beta.-(3,4-epoxycyclohexyl)ethyltrimethoxy silane.

Abstract: A low modulus room temperature vulcanizable silicone rubber composition with a good shelf life comprising a silanol containing polysiloxane, a filler, an acyloxy functional silane as the cross-linking agent and as the catalyst a compound which is selected from the class consisting of zinc salts and zirconium salts or a co-catalyst system comprising as one co-catalyst a tin salt of carboxylic acid and as the other co-catalyst either a zinc salt or a zirconium salt of a carboxylic acid.

Abstract: Polysiloxanes prepared by reacting a diester and a monomeric silane and the use of the polysiloxanes to produce silane modified, water-curable copolymers by reacting the polysiloxanes with alkylene-alkyl acrylate copolymers in the presence of an organo titanate catalyst. The copolymers so produced can be extruded about electrical conductors and water-cured providing insulation or jacketing thereon.

Abstract: Stable, substantially acid-free, one package moisture curable polyalkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst such as a tin compound. A method for making the aforesaid moisture curable organopolysiloxane compositions, is also provided.

Abstract: Certain aryloxyphosphonium salts have been found to be effective as curing agents for various cationically polymerizable organic materials, such as epoxy resins, when incorporated into such materials. The materials are found to be moisture curable coating compositions.

Abstract: The invention provides a novel room temperature-curable organopolysiloxane composition useful as an adhesive or a sealing material with remarkably extended workable time owing to the delayed surface filming. The base component in the composition is a conventional diorganopolysiloxane terminated with hydroxy groups at both molecular chain ends admixed with several known ingredients such as a cross linking agent, curing catalyst, filler and the like. The most characteristic ingredient in the composition effective to achieve the above mentioned desired property is a 1,1,1-trimethyl-3-hydrocarbyl-3,3-di(acylamino)disiloxane which belongs to a novel class of organopolysiloxane compounds and method is described for the preparation of these siloxane compounds.

Abstract: The invention provides a novel method for imparting water-repellency to a woven fabric such as velveteen by use of a silicone-based water-repellent agent. In addition to water-repellency, the fabric treated by the inventive method has many excellent characteristics required in a fancy fabric as well as susceptibility to bonding with a lining cloth by use of a hot-melt adhesive. The water-repellent agent used in the method comprises, in addition to an organohydrogenpolysiloxane, either one or a combination of a linear organopolysiloxane, in which at least 5% by moles of the organic groups are alkenyl, e.g. vinyl, groups, and a resinous organopolysiloxane composed of the monofunctional organosiloxane units and tetrafunctional siloxane units SiO.sub.2 in a limited molar proportion.

Abstract: A method for stabilizing silanol hydrolysates of organosilanes in an acid medium is described. The method comprises adding a neutralizing agent containing a chelatable metal ion to the silanol hydrolysate in an acid medium to reduce the acidity of the medium; removing solids from the medium; and adding a chelating agent to form a chelate with metal in the medium. In a preferred embodiment, methyltrimethoxysilane is hydrolyzed with an excess of slightly acidic water; calcium carbonate neutralizing agent is added thereto to reduce the acidity of the medium; excess calcium carbonate and other solids in the medium are removed by filtration; and acetylacetone is added as a chelating agent to form a chelate or to interact with the calcium from the calcium carbonate neutralizing agent in the medium. The process of this invention stops haze formation in the products formed by the process of the invention and substantially extends the shelf life of silanol hydrolysates of organolsilanes.

Abstract: One package moisture curable organopolysiloxane compositions are provided based on the use of a silanol-terminated polydiorganosiloxane, an alkoxy silane crosslinking agent and a vanadium compound as a curing catalyst. The moisture curable organopolysiloxane compositions are non-corrosive and substantially odor-free.

Abstract: What is disclosed are hard, abrasion resistant, tintable/dyeable coating compositions which are based on siloxane/silica hybrid coating resins. These materials are especially useful on transparent plastic substrates.

Abstract: Fiber-treating compositions are described which durably provide water repellency and oil repellency for the treated fibers. These compositions comprise a cyclic siloxane bearing fluorinated hydrocarbon radicals and silicon-hydride atoms, and a dehydrogenation catalyst. Curing of the compositions occurs by a dehydrogenation condensation reaction between the silicon-hydride atoms and/or between the silicon-hydride atoms and the hydroxyl radicals of an optionally added hydroxyl-endblocked organopolysiloxane.

Abstract: This invention provides for novel linear thermoplastic block copolyesters derived from dicarboxylic acids or dialkyl esters thereof, alkylene glycols and dihydroxy terminated polydimethylsiloxane block copolymers. Films, tapes, sheeting and other extruded and molded articles prepared from said copolyesters exhibit improved clarity and when tested in accordance with ASTM test method D-1894 exhibit improved nonsticking properties.

Abstract: The invention provides a novel and improved room temperature curable organopolysiloxane composition which is very stable over a long period of time if stored under an anhydrous condition but readily curable on exposure to moisture-containing atmosphere without producing no condensation products having toxicity, unpleasant odor or corrosiveness. The composition comprises, as the main component, an organopolysiloxane having at least three alkenyloxy groups bonded to the silicon atom or atoms in the organopolysiloxane molecule through a silhydrocarbylene linkage, e.g. silethylene linkage, and a curing accelerator.

Abstract: In the production of an aromatic polyester by reacting at least one aromatic diester of the formula ##STR1## wherein R is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 8 carbon atoms; andAr.sub.2 is an arylene group,with at least one aromatic dicarboxylic acid of the formula ##STR2## wherein Ar.sub.2 is an arylene group,in the presence of a catalyst, the improvement which comprises employing a transition metal salt of naphthenic acid as the catalyst.

Abstract: A coating composition according to the invention comprises at least one compound selected from hydrolyzates of glycidoxyalkyltrialkoxysilane or (3,4-epoxycyclohexyl) alkylalkoxysilane, a compound selected from the group consisting of unsaturated or saturated polyvalent carboxylic acids or anhydrides thereof, and a curing agent. The composition is coated to the surface of plastic molded product and then cured to constitute a coating film, thereby imparting to the molded product an improved surface hardness, abrasion resistance, antistatic property, thermal resistance etc.