Abstract: This invention relates to acrylic fiber strands suitable for use in production of carbon fibers and to a process for the production of the acrylic fiber used, in which an aminopolysiloxane and a dialkyl sulfosuccinate are coated on acrylic polymer filaments which permits the avoidance of problems such as the generation of static electricity and the deposition of an oil scum on rollers and guides. Because of such effects, excellent bundlability of fiber strands and stable operation of the carbonization process can be attained. The acrylic fiber strands thus obtained can be used for the production of high quality carbon fiber strands.

Abstract: Silicon-containing carbide fibers having high strength and modulus of elasticity, and polymer compositions for production thereof. These fibrers are inexpensive and very useful as reinforcing fibers for composite materials comprising plastics, carbon, metals, etc. as a matrix. These polymer compositions are also useful as a matrix of the above composite materials.

Abstract: Disclosed is a resin composition which comprises (a) 5 to 95% by weight of a styrene-based polymer having a syndiotactic configuration, (b) 95 to 9% by weight of a thermoplastic resin having at least one polar group selected from a carboxyl group, a hydroxyl group and an amino group at the terminal; and (c) 0.01 to 15 parts by weight of a styrene-based copolymer obtained by copolymerizing a styrene compound with a vinyl compound having an epoxy group or a styrene-based copolymer obtained by copolymerizing a styrene compound with an .alpha.,.beta.-unsaturated carboxylic acid anhydride based on 100 parts by weight of the aobve components (a) and (b). The composition exhibits no laminar peeling and has an excellent appearance because affinity and dispersibility of the styrene-based polymer and the thermoplastic resin are improved, and a polystyrene-based resin composition improved in mechanical strength can also be obtained without using a complicated process.

Abstract: A ceramic fiber is provided with a plurality of coatings to define a system useful in making composite articles in the manufacture of which the fiber experiences applied stress such as thermal shock. For example, such applied stress occurs in molten metal spraying about fibers to provide a metal matrix composite. The fiber, as a core, is provided with a first coating layer tightly bonded to a lateral surface of the fiber and has a first structure. A second coating layer is then deposited on the first layer and has a second structure different from the first structure thereby defining an interface between the coating layers which is a debonding discontinuity zone sufficiently weak to enable reparation of the layers as a result of applied stress, such as introduced by a thermal shock experience.

Abstract: The invention relates to an oxynitride glass fiber for composite products which has a surface cladding formed from a composition containing a silane coupling agent. This fiber is excellent in strength, elastic modulus, adhesion and wetting property with respect to matrix resin. A composite product comprising the above clad oxynitride glass fiber and a thermaplastic or thermosetting resin matrix is also disclosed. This composite is excellent in strength, elastic modulus, toughness and interlaminar shear resistance.

Abstract: Aqueous size compositions for glass fibers including a film former, coupling agent and crystalline pentaerythritol, which are particularly suitable glass fiber reinforcements for filament winding and pultrusion.

Abstract: Chemically treated fibers of glass, carbon or polyamide have a treatment incorporating a copolymer or terpolymer with (vinylpyrrolidone-acrylate or acrylic moieties. In addition the treatment can have at least one film forming polymer, at least one organic/inorganic coupling agent, at least one fiber lubricant and water all in effective amounts to perform their stated functions. In one aspect of the invention the fibers are glass fibers which have a chemical treatment which is a dried residue of an aqueous chemical treating composition comprising at least one epoxy polymer, emulsion or dispersion in a predominant amount on a nonaqueous basis of the dried components amount of the aqueous chemical treating composition, at least one amino organofunctional silane coupling agent in an effective coupling agent amount, at least one cationic fiber lubricant in an effective lubricating amount and water. In this aspect the ratio of the epoxy to copolymer should be less than around 60 to 1.

Abstract: A polysilylethylene arylene polymer having an alkoxy or aryloxy group as a side chain substituent is used to form optical fiber cores which do not significantly increase their light transmission loss under an external pressure applied thereto even when exposed to a humid condition.

Abstract: A surface-modified wholly aromatic polyamide fiber having an enhanced bonding property, surface tenacity and durability and a reduced friction, comprises a fiber matrix of a wholly aromatic polyamide material, fine particles of a cation-exchanging inorganic material distributed on and in a surface portion of the matrix and an additive comprising a cationic organic compound or a multi-functional organic silicone compounds, and attached to the fine organic particles.

Abstract: Articles comprising coemulsions of oxidized polyethylene with amino functional silicone fluids which includes at least one constituent selected from the group consisting of; ethoxylated aliphatic amines, ethoxylated nonylphenols, ethoxylated primary alcohols, ethoxylated secondary alcohols or other nonionic emulsifiers are taught, as well as processes for making the same. The coemulsions may also comprise further constituents, including but not limited to fatty acids, ammonium hydroxide, salts and water. Processes for the production of the coemulsion and articles comprising the same are also disclosed.

Abstract: An aqueous coating composition comprising a polyurethane/isocyanate emulsion, a homopolymer of acrylic acid, an amino silane and water. The sizes are particularly useful for reinforcing polyamide resins (nylons).

Abstract: The present invention provides a method for producing a glass cloth which is suitable as a reinforcing material for making resin laminates and which comprises subjecting filaments of glass fibers to a sizing treatment with a sizing agent containing at least one water-soluble film forming agent selected from the group consisting of an amine-modified epoxy resin, an ethylene oxide-added epoxy resin and ethylene oxide-added bisphenol A as film forming component, forming glass yarns from the thus treated filaments, weaving the glass yarns to make a glass cloth, washing the glass cloth with water until the loss of ignition of the sizing agent to the glass cloth reaches 0.25% by weight or less, and then treating this glass cloth with a solution of a surface treating agent.

Abstract: Nonwovens of synthetic continuous filaments obtained by melt extrusion, in which at least 50% of the filaments contain at least from 0,5 to 3%, preferably from 0.6 to 1.5%, of a polyorganosiloxane introduced into the said filaments during their manufacture.Process for the manufacture of these nonwovens, in which, before extrusion of the polymer melt to produce the filaments by flowing through orifices of a die, a silicone oil of polyorganosiloxane type is introduced in the proportion at least of 0,5 to 3%, preferably from 0.6 to 1.5% relative to the polymer, into the melt of the latter.The polyorganosiloxane product employed is of the polydiorganosiloxane type with a molecular weight of between 1,000 and 250,000, preferably between 7,500 and 70,000, corresponding to dynamic viscosities of 50 to 10,000 mPa s; stable under extrusion conditions.Use of the nonwovens, chiefly as a support for floor coverings with stitched pile.

Abstract: A unique composition of matter useful for treating glass fibers is claimed containing a film forming polymer, an organo coupling agent, a filament lubricant and an allylic compound, such as triallylcyanurate. The glass fibers carrying the dried residue of an aqueous chemical treating composition containing the unique chemical treating composition can be used to prepare a thermosetting plastic composite having improved strength. The composites so prepared are useful in making clear, translucent panels of improved weatherability and pultrusion profiles having higher strengths, such as compressive, shear and flexural strengths.

Abstract: A surface-protected structure having a surface covered with a monomolecular adsorbed film of a silane-type surface active agent, which film is formed on the surface of a fine particle or fiber containing OH groups by a chemical adsorption reaction between silicon atoms of the silane-type surface active agent and the OH groups of the fine particle or fiber. Ultra-fine particles having the above structure exhibits little property deterioration and have excellent resistance against environment, and a filler having high resistance to peeling is also provided.

Abstract: Aqueous size compositions for glass fibers including melamine formaldehyde resins, phenoxy resins and epoxy coupling agents which are particularly suitable glass fiber reinforcements for thermoplastics. In particular, chopped glass fibers coated with the size are useful in reinforcing acetal composites.

Abstract: As cotton bales are produced by obtaining lint cotton by subjecting collected seed cotton to a ginning process, linear polyorganosiloxane of a specified type which has 10-6000 siloxane units and is insoluble or dispersive in water is adhesively attached to the seed cotton or to the lint cotton by 0.03-2.0 weight % with respect to the lint cotton.

Abstract: A composite filler material is disclosed. The filler material includes an inorganic core and a layer of crosslinked silicone elastomer covering the core and chemically bonded to the core. A process for making the composite filler material is also disclosed.

Abstract: This invention provides:(i) an acitve energy beam-curable composition for coating the surface of optical fibers therewith, the composition comprising about 100 parts by weight of an active energy beam-curable substance, about 0.5 to about 100 parts by weight of a particulate substance having a mean particle size of about 0.2 to about 200 .mu.m and optionally a photopolymerization initiator;(ii) a coated optical fiber prepared by applying the composition of item (i) to the surface of an optical fiber and curing the coating;(iii) a bundle-type optical fiber cable prepared using the coated optical fiber of item (ii);(iv) an optical fiber unit of the tape type prepared by applying the composition of item (i) to optical fibers and curing the coating; and(v) an optical fiber prepared using the optical fiber unit of item (iv).

Abstract: A class of organosilanes of the general formula ##STR1## wherein Ar is a divalent aromatic radical; R.sub.f is a defined fluoroalkyl or perfluoroalkyl ether group; X is methyl, R.sub.f Ar as defined above, a halogen other than fluorine, or an alkoxy group; and each one of Y and Z is a halogen other than fluorine or an alkoxy group. These organosilanes are very useful as precursors to polysiloxane coupling agents for bonding fluoropolymers to glass fibers which can withstand the usual fluoropolymer melt-processing temperatures without decomposition.

Abstract: A composition useful in the manufacture or cable comprising:(i) a copolymer comprising ethylene and one or more alpha-olefins having a density equal to or less than 0.915 gram per cubic centimeter;(ii) a metal hydrate flame retardant compound;(iii) a styrene-ethylene-butylene-styrene triblock copolymer; and(iv) optionally, an impact polypropylene copolymer or polypropylene.

Abstract: Polyolefin coatings and films that may be used as release sheets, processes for the manufacture thereof and the related compositions are disclosed. The release sheets are formed from a composition of polyolefin, a dimethyl polysiloxane having functional end-groups, a vinyl silane, an agent for grafting the vinyl silane onto the polyolefin and a moisture curing agent. The composition is fed to an extruder and formed into sheet, especially by feeding a mixture having two components, one having an excess of vinyl silane and the other having less than an excess of vinyl silane, based on the amount of dimethyl polysiloxane in each component. The release sheets may be used, for instance, as the backing sheet for labels.

Abstract: Novel silicone acrylate polymers and a method for their preparation is disclosed. These polymers are formed from silicone acrylates, silicone diacrylates, or mixtures with organic acrylates. The copolymer formed from the reaction mixture of silicone acrylates and organic acrylates is useful in enhancing glass reinforced polyesters.

Abstract: This invention relates to an aromatic vinyl ether siloxane having the formula ##STR1## wherein A is --CH.sub.2 -- or >C(CH.sub.3).sub.2 ;m has a value of from 1 to 22;R.sub.1 and R.sub.2 are each selected from the group consisting of ##STR2## with the proviso that at least one of R.sub.1 and R.sub.2 is (a) and R.sub.2 can be a mixture of (a) and (b) when m is greater than one,R.sub.3 and R.sub.4 are lower alkyl,r has a value of from 0 to 20,R is alkylene or alkylene phenylene,B is C.sub.2 to C.sub.20 alkylene, arylene or a fluorinated derivative of these radicals,t has a value of from 1 to 100,Z is C.sub.2 to C.sub.3 alkylene andn has a value of from 1 to 10.

Abstract: Chemically treated glass shapes have a moisture-reduced residue of a chemical treating composition having: a first film forming polymer that is a thermoplastic polyester film forming polymer, a second film forming polymer that is an acrylic-type copolymer, at least one organosilane coupling agent selected from epoxy functional organosilane coupling agents and amino-functional organosilane coupling agents and mixtures thereof, at least one cationic lubricant and a carrier. The ratio of amounts of the first film forming polymer to the second film forming polymer is in the range of around 1:1 to 99:1. The chemically treated shapes can be in the form of beads, flakes, chopped or milled fibers, continuous fibers, strands, or bundles of fibers and yarn, and mats of continuous strand and/or chopped strand.

Abstract: The invention relates to an optical glass fibre 1 having a synthetic resin coating which consists of at least two layers 2 and 3 in which the first layer 2 is formed from an elastomer forming material which can be cured by exposure to actinic radiation, and in which the optical glass fibre exhibits a great tensile strength, a small risk of static fatigue fracture and a low ageing rate, owing to the fact that the synthetic resin composition comprises between 0.1 and 5% by weight of one or more phosphorus compounds of the following structural formula: ##STR1## wherein n has a value of 1 or 2 and wherein R represents an organic group, preferably an organic group which co-reacts during curing of the elastomer forming material and is built into the polymeric network thus formed.

Abstract: Glass fibers are prepared with a chemical treatment resulting in chemically treated glass fibers having utility in reinforcing thermoplastic polymers such as polyolefins. The chemically treated glass fibers have a dried residue of an aqueous chemical treating composition having one or more amino organo coupling agents, an aqueous emulsion of an acid or anhydride modified polyolefin having one or more surfactants, wherein the polyolefin is neutralized with an organic or inorganic base with a basicity less than the basicity of the amino moiety of the coupling agent, a binder stabilizer, one or more film forming polymers, and water. The aqueous chemical treating composition is essentially free of cationic lubricants that are amidated fatty acids and polyvinyl acetate homopolymer.

Abstract: Coated ceramic fibers useful in resin matrix/reinforced composites are disclosed wherein the ceramic fibers have been heat treated at a temperature in excess of 900.degree.C. to form a microcrystalline structure. The heat treatment eliminates hydroxyl coupling sites required for coupling to a resin. The ceramic fibers are coated with silanol groups that re-establish hydroxyl sites to enable a difunctional organic coupling agent to bond a resin to the ceramic fibers more effectively.

Abstract: Polymeric-containing compositions having improved oxidative stability have the polymer and at least two stabilizing agents. These agents are selected from low temperature antioxidants such as alkali metal and alkaline earth metal hypo or hydrogen phosphites, high temperature antioxidants such as: alkali metal or alkaline earth metal phenylphosphonates, thioethers like dialkyl thioalkylionate and polymers thereof and metal deactivating agents like polydentate ligands and ethylene diamine-tetracidic acid compounds. The composition can be a coating composition for substrates including those like fibrous material including fibers, bundles of fibers, strands, roving, flakes and beads. The composition can be present as a dried residue on the substrate. For fibrous substrates, the composition also has at least one organofunctional silane coupling agent, may also have processing aids such as epoxy polyester polymers and/or lubricants.

Abstract: A discontinuous carbon fiber reinforced glass matrix composite includes a glass matrix, a plurality of carbon reinforcing fibers dispersed in the matrix, and a plurality of boron nitride reinforcing particles dispersed in the matrix. The composite may be fabricated by mixing glass powder and boron nitride reinforcing particles in a carrier liquid to create a slurry and adding a binder to the slurry. A continuous multifilament carbon fiber yarn is impregnated with the slurry and dried to remove the carrier liquid. The impregnated carbon fiber yarn is cut to a suitable length and is molded in a suitable molding means to form a carbon fiber reinforced glass matrix composite article.

Abstract: A method of treating fibrous materials comprises applying a polydiorganosiloxane having at least one unit (a) of the general formula ##STR1## and at least one unit (b) of the general formula ##EQU1## wherein R is a hydroxyl, monovalent hydrocarbon or hydrocarbonoxy group, R' is a divalent hydrocarbon group which optionally contains oxygen and/or nitrogen, R" is a hydrogen atom or an alkyl group optionally containing an oxygen atom in the form of a hydroxyl group and/or a C.dbd.O group, a is 1 or 2, b 2 or 3 and each n from 2 to 8. Treated fibrous materials have improved softness with improved non-yellowing characteristics.

Abstract: Siloxane compounds formed by the reaction of a hydridosiloxane with vinylsiloxane are employed in a wide variety of uses, e.g., coatings for optical fibers and flexible layers for touch screen cathode ray tubes. These siloxane materials are substantially improved through treatment with a lower alkene such as ethylene to prevent hydrogen evolution and undesirable crosslinking.

Abstract: The subject invention relates to a coated reinforcement material comprising a reinforcement having a coating or the general formula:A.sub.x Si.sub.100-xwherein A is selected from the group consisting of Au, Pt, Ru, Rh,Ni, Pd, Ir and combinations thereof; andx is within the range of greater than zero to about 40.The invention further relates to a high strength, high temperature performance composite comprising a matrix material and a reinforcement material having a coating comprising silicon in combination with at least one of gold, platinum, ruthenium, rhodium, nickel, iridium and palladium.

Abstract: Fiberballs for filling uses have been prepared from mechanically-crimped fibers having both a primary crimp and a secondary crimp with specific configurations, especially amplitudes and frequencies. The fiberballs may contain a proportion of other fibers, particularly binder fibers.

Abstract: This invention relates to vinyl ether siloxanes having the formula ##STR1## wherein Y is alkylene or phenylene optionally substituted with fluorine,R is alkylene or alkylene phenylene,R.sub.1 and R.sub.2 are lower alkyl,R.sub.3 is C.sub.1 to C.sub.20 alkyl,A is --CH.sub.2 --, >C(CH.sub.3).sub.2, or ##STR2## W is ##STR3## with the proviso W is ##STR4## when p is one and at least one of W is ##STR5## when p is greater than one; Z is C.sub.2 to C.sub.3 alkylene,X is hydrogen or methyl,B is halo or lower alkyl,m has a value of from 1 to 10,n has a value of from 1 to 20,p has a value of from 0 to 10,r has a value of from 0 to 20,t has a value of from 1 to 100 andv has a value of from 0 to 4.The invention also relates to the process of preparing the present vinyl ether siloxanes and to their use as coating materials.

Abstract: Granules of glass flakes which comprise glass flakes in granular form and a binder which bonds the glass flakes to one another to form granules. The granules are used together with a molten thermoplastic resin.

Abstract: Fibers useful as surface materials for paper diaper, napkin for menstruation, etc. are provided, which fibers comprises a polyolefin or a polyester having a mixture of (A) a fatty acid diethanolamide, (B) a polyether-modified silicone, (C) a sorbitan fatty acid ester and (D) a metal salt of an alkylsulfonate in mixing proportions of (A): 30-60%, (B): 20-55%, (C): 10-25% and (D): 5-10%, each % by weight based on the mixture, adhered onto the surface of fibers comprising a polyolefin or a polyester, in 0.2-1.0% by weight based on the fibers.

Abstract: Chemically treated fibers have an aqueous chemical treating composition and are useful for reinforcing thermoplastic polymers most notably polyacetals and polyphenylenesulfide. The aqueous chemical treating composition has a water soluble silylazide in an effective coupling agent amount, and one or more stabilizing agents selected from a fortified film forming polymer present as an oil-in-water emulsion, an unsaturated organo-compound present in an amount to stabilize the reinforced matrix polymer from degradation by silylazide derivatives or additives, a water soluble polymer, like poly(vinyl alcohol) or silylated poly(vinyl alcohol) present in the composition in an amount greater than 10 weight percent of the composition and mixtures thereof, and water in an effective amount for application of the composition to the fibers.

Abstract: An aqueous glass size composition comprising a water dispersible phenoxy resin modified with an acid, cyanurate or isocyanurate, and an organosilane coupling agent is disclosed. The glass fibers coated with the aqueous size composition are useful for incorporation into molding compositions for strength improvement.

Abstract: A glass fiber product for laminates is provided having excellent epoxy resin impregnation properties and solvent resistance, high soldering heat resistance, good heat shock resistance and low water adsorption properties, and to a silane coupling agent for providing such a glass fiber product.The silane coupling agent is prepared by reacting 2.3 to 4.0 mols of a haloalkylalkoxysilane with 1 mol of a diamine having N atoms to which 4 active hydrogen atoms are bound, a silane coupling agent prepared by reacting 1.3 to 3.0 mols of a haloalkylalkoxysilane with 1 mol of a diamine having N atoms to which 3 active hydrogen atoms are bound and to which one alkylsilyl group is bound, or a silane coupling agent prepared by reacting 0.3 to 2.0 mols of a haloalkylalkoxysilane with 1 mol of a diamine having N atoms to which 2 active hydrogen atoms are bound and to which 2 alkylsilyl groups are bound.

Abstract: Cosmetic and dermatological application of polysiloxanes containing a diester functional group and compositions employed.The invention relates to the use in cosmetics and in dermatology of diorganopolysiloxanes containing a diester functional group carrying, per molecule, at least one unit of formula:ZR.sub.a SiO.sub.(3-a)/2where a is 0, 1 or 2, Z is a radical of formula: ##STR1## the symbols R', which are identical or different, denote a C.sub.1 -C.sub.12 monovalent saturated hydrocarbon, C.sub.2 -C.sub.12 alkoxyalkyl or C.sub.8 -C.sub.12 aryl, alkylaryl or aralkyl radical, X denotes H or CH.sub.3 ; W is a covalent bond or a C.sub.1 -C.sub.4 alkylene radical; and the symbols R, which are identical or different, denote C.sub.1 -C.sub.20 alkyl, vinyl, phenyl, 3,3,3-trifluoropropyl or hydroxyl, provided that only one radical R per silicon atom denotes hydroxyl.

Abstract: The present invention describes aqueous, finely divided to optically clear, thermally and mechanically stable silicone emulsions, these emulsions containing, relative to the overall emulsions 3 to 25% by weight of a water-soluble emulsifier (a), 0.1 to 84% by weight of an aminoalkyl-substituted polysiloxane (b) (amine number 0.1), in which, if appropriate, is present, at least partially, in salt form, and up to 70% by weight of which may be replaced by other polysiloxanes (emulsifier:silicone ratio at least 1.2:10), up to 3% by weight of a low-molecular weight, weak acid (c) and at least 5% by weight of water, (d), the sum of a), b), c) and d) being 100% by weight.In addition, a process is also patented for the preparation and use of these emulsions.The silicone emulsions according to the invention are distinguished by excellent thermal stability.

Abstract: Carbon fiber precursors from pitchy materials are processed by applying thereonto an aqueous emulsion containing a single silicone oil or a mixture of silicone oils selected from polydimethyl siloxane, phenyl modified polydimethyl siloxane and aminoalkyl modified polydimethyl siloxane and having kinetic viscosity at 25.degree. C. of 100 centistokes or less, an alkanolamine salt of aliphatic monocarboxylic acid with 8-18 carbon atoms, and one or more non-ionic surfactants selected from polyoxyethylene alkylphenylethers polyoxyethylene alkylates, polyoxyethylene alkylaminoethers, and aliphatic monocarboxylic alkanolamides such that 0.1-5 wt % by solid deposit on fiber from this aqueous emulsion apply to the pitch fibers during any of the processes from the spinning and to the oxidizing.

Abstract: Novel coating compositions for coating optical fibers are provided which utilize ultraviolet radiation-curable epoxy-functional or vinyl-functional diorganopolysiloxanes to form flexible, loosely adherent, and environmentally stable primary coatings. Such coatings assist in preventing attenuation of light impulses transmitted through the core fiber or reduce the level of signal "noise". Use of the particular coating compositions allows high-speed production of such optical fibers.

Abstract: A method for imparting and retaining hydrophilicity and liquid strike-through properties within an essentially hydrophobic polyolefin-containing nonwoven material and the corresponding fiber, fibrillated film, and nonwoven product thereof, whereby essentially hydrophobic polyolefin-containing fiber or film is topically treated with an effective amount of one or more of a water soluble polyalkoxylated polydimethylsiloxane, an alkoxylated ricinolein with certain fatty acids, or corresponding hydrogenated derivatives thereof.

Abstract: Twisted bundle of glass fibers have on a substantial portion of the surface of each fiber a moisture reduced residue of an aqueous chemical treating composition (size). The size has an epoxy polymer as the major film forming polymer, at least one emulsifying agent for the epoxy polymer, at least one fiber lubricant in an effective fiber lubricating amount, at least one organofunctional metallic coupling agent in an effective coupling agent amount, polyvinylpyrrolidone, water dispersible or emulsifiable ultrahigh, high, or medium density polyethylene and water. The amount of the polyvinylpyrrolidone and polyethylene is in the range of around 1 to 15 weight percent of the nonaqueous components of the size for each of the polymers. When the bundle has less than around 400 filaments, starch is also present in an amount in the range of 0.5 to 15 weight percent of the nonaqueous components.

Abstract: A transparent composite material, which may take the form of a plate, includes a polymeric matrix and glass fibers embedded within the matrix. The polymer of the matrix and the glass of the fibers are transparent and have substantially the same index of refraction. A bond exists between the glass of the fibers and the polymer of the matrix. The composite may be formed by immersing the fibers in a monomer and then curing the monomer to a polymer.

Abstract: The present patent application relates to stable, finely-dispersed, aqueous single-component silicone catalysts which have been obtained by combining a silicone dispersion which is free to essentially free of lower monohydric alcohols and has been prepared in a conventional manner in the presence of long-chain liquid alcohols having 6 to 18 carbon atoms and with the use of known epoxyamine prepolymers as emulsifiers with a separately prepared, conventional nonionic or cationic dispersion of organometallic compounds.In addition, a process for the preparation of this emulsion and the use thereof are described.The catalysts according to the invention are distinguished by not having a flashpoint or having a flashpoint above 65.degree. C. and nevertheless having excellent stability, in particular mechanical stability.

Abstract: The coated optical fiber of the invention is prepared by providing a coating layer of an ultraviolet-curable organopolysiloxane or a composition comprising the same and irradiating the coating layer with ultraviolet. Specifically, each of the terminal silicon atoms of the organopolysiloxane, which preferably has a linear molecular structure, has two or more ethylenically unsaturated polymerizable groups bonded thereto through an oxygen atom, such as CH.sub.2 .dbd.CHCOOCH.sub.2 CH.sub.2 --, [CH.sub.2 .dbd.C(CH.sub.3)COOCH.sub.2 ].sub.3 C--CH.sub.2 -- and (CH.sub.2 .dbd.CHCOOCH.sub.2).sub.2 C(C.sub.2 H.sub.5)CH.sub.2 --. By virtue of this unique molecular structure of the organopolysiloxane, the coating layer is rapidly cured by ultraviolet irradiation to give a cured coating layer exhibiting very low water absorption and small temperature dependency of the Young's modulus at low temperatures.

Abstract: The silicone rubber obtained by curing in the presence of a platinum-containing catalyst a composition comprising an organopolysiloxane containing a plurality of lower alkenyl radicals and a organohydrogensiloxane consisting essentially of R.sub.3 SiO.sub.1/2 units, R.sub.2 SiO units, RHSiO units, and RSiO.sub.3/2 units in a specified molar ratio is uniquely suitable as the coating material for the press roll in the fixing assembly of an electrophotographic copier.