Abstract: Diene polymers or copolymers having improved balance between raw polymer viscosity and mixed compound viscosity, useful in tire tread compositions having highly balanced wet traction, rolling resistance, and traction in ice and snow, and fracture properties in the cured and white carbon reinforced states are provided. These diene polymers or copolymers comprise a mixture of diene polymer or copolymer chains containing carbon-tin bonds in the main polymer or copolymer chains and diene polymer or copolymer chains containing terminals derived from hydrocarboxysilane compounds. The diene polymer or copolymers are prepared by first coupling a portion of the living diene polymer or copolymer chains obtained by anionic polymerization using a tin polyhalide coupling agent and then terminating the remaining living diene polymer or copolymer chains using hydrocarboxysilane compounds.

Abstract: The present invention describes a free radical polymerizable segmented macromonomer based on perfluoroelkyl ether, polysiloxane and divalent organic segments. This macromoner can be polymerized and used to form moldings, contact lenses, corneal implants and other biomedical articles.

Abstract: A partially silylated organosilicic acid polymer is disclosed. The polymer has a weight average molecular weight of from 2,000 to 6,000 and is prepared by silylating a purified sodium silicate having an M.sub.w /M.sub.n ratio of not more than 1.8.

Abstract: Epoxysilanes having epoxide groups bonded via SiC are obtained by reaction of epoxyalkoxysilanes with silanols. The transparent siloxane mixtures containing epoxide can be employed directly as resin components for mixing with epoxy resins for casting resin applications.

Abstract: Dipcoated Rx spectacle lenses require coating scratch resistance, tinting and/or AR coating processes. Chemically, fully-hydrolized copolymers of amino silane and epoxide silane form the chemical backbone of these heat-curing hardcoats, although polyfunctional organic resin modifiers may also "co-cure" into the backbone. The liquid coating copolymer is made in three chemical reactions: (1) fully hydrolizing the two silane Components A&B separately, with a stoichemetric excess of water; (2) ketimine formation, to latently cap the amine functionality; (3) "bodying" the liquid hardcoating to a desired degree of copolymerization, by reacting together the fully hydrolized ketimine silane Component B with the fully hydrolized epoxide-functional silane Component A. Dilution is with the selected resin modifier(s) ketone and alcohol solvent. The resin modifier has at least two organo-functional reactive groups per molecule, of epoxide or melamine or hydroxyl or urea families.

Abstract: The present invention is a curable fluorosilicone composition having improved lubricity, low compression set, and good resistance to fluids such as automotive fuel without post-curing. The composition comprises(A) poly(trifluoropropyl)methylsiloxane, (B) vinylmethyldi(N-alkylacetamido)silane, (C) reinforcing treated silica, (D) chlorotrifluoroethylene polymer, and (E) vinyl specific organic peroxide catalyst.

Abstract: A method for separating hexamethylcyclotrisiloxane that does not require the use of a distillation set up adapted for use with solids and that collects the hexamethylcyclotrisiloxane in the form of an easy-to-handle solution. The method comprising inducing the ascent in the gaseous state of a hexamethylcyclotrisiloxane-containing mixture of polydimethylcyclosiloxanes in a distillation column provided with a sidestream element in the middle region of the column so as to induce the ascent of gaseous hexamethylcyclotrisiloxane to at least the level of the sidestream element, supplying into said distillation column solvent having a boiling point below that of hexamethylcyclotrisiloxane and capable of dissolving hexamethylcyclotrisiloxane, so as to form a liquid mixture of hexamethylcyclotrisiloxane and said solvent in the vicinity of the sidestream element, and withdrawing the said liquid mixture from the sidestream element.

Abstract: The present invention provides a novel method of rendering a wallboard water-repellent comprising applying to the wallboard a water-repellent composition comprising a hydrogen siloxane component and a high molecular weight silicone.

Abstract: A method in which radical polymerization of a vinyl monomer is initiated by an ozonide group attached to a silane or a siloxane polymer. The method is particularly useful for preparing organic polymers having a silicone chain end, or for preparing wide ranges of silicone/organic polymers and copolymers with varied architecture, i.e., ABA block copolymers, comb polymers, star polymers, and hyper-branched polymers. In one embodiment, the method is carried out by simply heating a vinyl monomer in the presence of a silane containing ozonide functionality. The ozonide silane is obtained by exposing silanes or siloxanes having an alkyl group containing a double bond to ozone. Surprisingly, an ozonide attached to an organosilicon compound was found to be stable, and capable of initiating vinyl polymerization upon heating to moderate temperatures, i.e., about 70.degree. C.

Abstract: A high-molecular weight polyorganosilyl silicate having a weight-average molecular weight of 30,000 to 2,000,000 on polystyrene conversion in which the repeating units form a ladder structure through siloxane bonding, and the ladder structures are further bonded together through siloxane bonding is disclosed. Also disclosed is a process for producing the polymer. The polymer is useful as a coating material or a film-forming material to provide a coating film or a film having excellent electrical characteristics, weather resistance, adhesion, water repellency, processability and scratch resistance.

Abstract: The present invention relates to rinse-off hair care compositions which provide styling and hair conditioning properties without the formation of a non-removable residue. The compositions comprise from about 0.25% to about 70% of a copolymer component comprising from about 1.5% to about 70% of a silicone-grafted adhesive hair styling copolymer having a weight average molecular weight from about 300,000 to about 5,000,000 and from about 30% to about 98.5% of a hydrophobic volatile solvent.

Abstract: Optically active .alpha.-(hydroxyphenoxy)-alkanecarboxylic acids or derivatives thereof, for example D-2-(4-hydroxyphenoxy)propionic acid or lower alkyl ester thereof, are prepared by (a) saponifying an alkyl ester of an optically active .alpha.-halogeno-alkanecarboxylic acid, in an alcoholic solvent medium, by reacting same with an aqueous solution of an alkali metal hydroxide, thereby providing a solution of an alkali metal salt of an optically active .alpha.-halogeno-alkanecarboxylic acid, (b) next reacting the step (a) solution thus provided with a dihydroxybenzene or salt thereof, in the presence of an alkali metal hydroxide and in an alcoholic solvent medium, and thence (c) recovering the optically active .alpha.-(hydroxyphenoxy)-alkanecarboxylic acid or derivative thereof from the medium of reaction.

Abstract: When a thermosetting composition comprising(A) a resin having hydroxyl group,(B) a hydrolyzable silyl group-containing polymer,(C) a hydrolyzable silicon compound and(D) a curing catalyst is used, coating materials having no problem as to bad-smelling can be obtained and the coating films formed therefrom are improved in physical properties such as adhesion, solvent resistance and hardness.

Abstract: A silicone/polyester adduct comprises between about 5 and about 30 wt % of silicone adducted to between about 70 and about 95% polyester chains formed from polyfunctional acids plus polyfunctional acids and/or anhydrides. At least about 50 mole percent of the polyfunctional acids and/or anhydrides are cycloaliphatic.

Abstract: This invention provides a release agent consisting of a blend of poly(organosiloxane) fluid and phenol-functionalized poly(organosiloxane) fluid which when used at elevated temperatures does not produce insoluable or undesirable by-products or gellation. The release agent is particularly suited for application to a fuser member for fusing toner images to a receiver.

Abstract: Cosmetic compositions containing tricholine citrate (TCC). TCC stimulates keratinocyte growth, does not inhibit keratinocyte differentiation and increases the phospholipid levels in keratinocytes. Thus, TCC provides improved conditioning, improved youthful appearance, moisturization and improvement in the appearance of photodamaged skin.

Abstract: Disclosed are aqueous solutions of polymeric organosiloxane-ammonium compounds which possess ion exchange properties and a method for manufacture from solid organopolysiloxanes. The solutions are used in the hydrophobing treatment of inorganic materials and building materials.

Abstract: Novel and highly reactive hydrolyzed silane emulsions are achieved by emulsifying a hydrolyzable alkoxysilane (e.g., or the like) in water in the presence of an effective amount of an emulsifier of sufficiently high HLB value (preferably 14 or greater) to simultaneously retain said hydrolyzable alkoxysilane compound in a substantially totally hydrolyzed state and inhibit said resulting hydrolyzed alkoxysilane compound from self-condensation. Such reactive emulsions containing hydrocarbon silanes are useful to produce durable coatings that impart water repellency and lubricity to substrates having siliceous, cellulosic or proteinaceous surfaces.

Abstract: The present invention relates to a process for the preparation of organopolysiloxane resins by hydrolysis and condensation of silanes and/or (partial) hydrolysates thereof.

Abstract: Silicone pressure sensitive adhesive compositions which cure in the presence of moisture comprise an adhesive component which bears alkoxy radical-containing curing radicals and, optionally, a catalyst to accelerate the reaction of moisture with the alkoxy radicals to form siloxane bonds. Curing provides adhesives ranging from pressure sensitive adhesives having improved properties to permanent adhesives. The adhesives are useful for adhering an object to a surface and thereafter improving the bond between the object and the surface by exposure to moisture.