Abstract: The invention provides an RTV organopolysiloxane composition comprising (A) a terminally di- or trifunctional organopolysiloxane, (B) an alkoxysilane, (C) calcium carbonate surface treated with a carboxylic acid having a melting point of at least 100.degree. C., and (D) a condensation catalyst. The composition cures into a cured product capable of forming a durably thermoresistant and water immersion-resistant bond to substrates such as surface treated aluminum members, fluoro-resin coated steel strips and acrylic resin electrodeposited steel strips.

Abstract: The symptoms of the climacterium are ameliorated by the administration to an afflicted individual one or both of a nitric oxide substrate and/or nitric acid donor, alone or optionally in combination with a progestin or, in the case of a non-pregnant female, either a progestin or an estrogen or both.

Abstract: A leak preventing detent apparatus for a toilet flush valve assembly in which an inlet valve (13) to a toilet flush tank (11) is controlled by an inlet valve control device (14, 14a, 16, 17), and an outlet flush valve (21) is controlled by a flush lever (19). The detent apparatus includes a follower member (28) that is moved in response to movement of the flush lever at the initiation of a flush cycle, and a detent (25) that is operative to prevent opening of an inlet valve (26) except when a flush cycle is deliberately initiated. In a preferred form of the invention, a primary inlet valve (26) is provided upstream of the usual inlet valve (13) that is controlled by an inlet valve control device, such as a float (14, 14a, 16, 17), and the detent apparatus effectively cooperates with the primary inlet valve to maintain it closed unless a flush cycle is deliberately initiated. The detent member may be hydraulically damped (37-42) to provide a timed delay of its movement into inlet valve closing position.

Abstract: In a process and apparatus for treating a gas containing hydrogen sulphide and sulphur dioxide, the gas is contacted with an organic solvent (1)for example, a polyalkylene glycol, containing a catalyst for example, an alkaline salt of a week organic acid, in at least one gas-liquid reactor contactor (2) and a gas (20) substantially no longer containing hydrogen sulphide and sulphur dioxide is recovered. The effluent contains sulphur vapor. It is cooled by mixing with a solvent-water mixture (14) or by cooled solvent in a cooling zone (7) to produce a suspension of sulphur crystals in the solvent. The crystallised sulphur is separated from the solvent in a separation zone (30) and the cooled solvent is recycled (13). An effluent (17) which is free of sulphur gas is obtained.

Abstract: A nematic liquid crystal mixture having a birefringence .increment.n of at least 0.20, comprising at least one fluorinated terphenyl of formula I and at least one fluorinated terphenyl of formula II ##STR1## wherein R and R' are each independently of one another or alkyl of up to 12 C atoms, optionally substituted by halogen, CH.sub.2 group optionally replaced, in each case independently of one another, by --O--, ##STR2## in such a manner that oxygen atoms are not linked directly to one another,X and X.sup.1 are each independently F, Cl, CF.sub.3, OCF.sub.3 or OCHF.sub.2, andL.sup.1 -L.sup.4 are each independently H or F.

Abstract: A coating agent composition comprising an organopolysiloxane resin: with the organopolysiloxane resin having a number average molecular weight of at least 500 and acrylic or methacrylic functional group-attached silicon atoms in a proportion of 5 to 100 mole % to the total silicon atoms; and with the resin comprising units represented by formula R.sup.1 LSiX.sub.3 in a proportion of 30 to 100 mole %, wherein R.sup.1 is a hydrogen atom or a substituted or unsubstituted organic group having 1 to 18 carbon atoms and X is a hydroxyl group, a hydrolyzable group or a siloxane residue, provided that at least one X is a siloxane residue; wherein from 30 to 80 mole % of the R.sup.1 SiX.sub.3 units are one silanol group-containing units represented by formula R.sup.1 Si(OH)Y.sub.2 wherein Y is a siloxane residue.

Abstract: An improved end fastener for attaching the end of an eyeglass-holder cord to a temple leg of eyeglasses includes an elongated elastomeric body having a double-tapered slot for resiliently mounting the body about a temple leg. The slot has a slotted narrow web at the narrowest location. A hole in the body holds a connector ring to connect the body to an end of the holder cord via an eyelet of a cord-end cap. Molding of the double-tapered slot includes use of two opposed, tapered cores, each disposed in a half-cavity of the mold.

Abstract: A chemically amplified positive resist composition contains (A) an organic solvent, (B) a base resin in the form of a polymer having at least one acid labile group and crosslinked within a molecule and/or between molecules with a crosslinking group having a C--O--C linkage, the polymer having a weight average molecular weight of 1,000-500,000, (C) a photoacid generator, (D) a basic compound, and (E) an aromatic compound having a group .tbd.C--COOH in a molecule. The composition has a high alkali dissolution contrast, high sensitivity and high resolution.

Abstract: In order to prevent the formation of flash on a gasket used to seal a filter element when the filter element is mounted in a housing to filter a fluid, such as air for an internal combustion engine, a molding method and apparatus utilizes a pair of mold components which abut along a mold line and define a cavity for forming the gasket. As the expandable material expands to fill the cavity and form the gasket, a portion of the material adjacent the mold line is received in an annular groove in one of the mold components so that flash is not formed at the mold line. One of the mold components also has an upwardly sloping ramp surface so that air and gas move along the ramp surface as the material expands and does not become trapped in the cavity, thus avoiding defects and blemishes in the gasket due to trapped air bubbles.

Abstract: A method of producing a hydrogen absorbing alloy powder, which comprises a step of treating a pulverized hydrogen absorbing alloy with a solution comprising a condensed phosphoric acid having 2 to 20 phosphorus atoms, phytic acid or a mixture thereof; and a negative electrode using a hydrogen absorbing alloy powder produced by the aforesaid method, which can ensure high initial activity and high initial capacity in the nickel-hydrogen secondary battery provided therewith.

Abstract: A musical tool for striking an instrument comprises a shaft and a head connected to one end of the shaft. A layer of short fibers is adhered to the surface of the head. The short fibers have inner and outer ends, the inner end adhered to the head and the outer end projecting outwardly from the head in a direction generally normal to the point of adherence.

Abstract: The present invention relates to laser-markable plastics whose feature is that they comprise non-lustrous pigments based on phyllosilicates which have an irregular surface.

Abstract: The invention relates to a composition based on stabilized methylene chloride composed essentially of at least one 1,2-epoxyalkane and of at least one acetal, and preferably no nitroalkane.The composition according to the invention can be used for degreasing, cleaning and/or drying metal components.

Abstract: A silicone rubber is prepared from a silicone rubber compound comprising (A) an organopolysiloxane having an average degree of polymerization of at least 100, (B) a reinforcing silica filler, and (C) an organohydrogenpolysiloxane by mixing component (C) with components (A) and (B) and heating them at a temperature of at least 100.degree. C. to form the silicone rubber compound, adding an organic peroxide or a platinum group metal catalyst to the compound, and crosslinking the compound. The silicone rubber exhibits a minimal difference in physical properties between primary vulcanization and secondary vulcanization.

Abstract: The invention relates to a process for ex-situ presulfurization of porous particles of a hydrocarbon hydroconversion catalyst that contains at least one metal or metal oxide, comprising bringing catalytic particles into contact with a presulfurizing agent that contains elementary sulfur and at least one organic liquid. It is characterized in that the process comprises preparing the presulfurizing agent in the form of an essentially homogeneous liquid and impregnating the catalyst particles with said liquid, with said elementary sulfur consequently being incorporated for the most part into the pores of the catalyst.

Abstract: To continuously produce and separate high purity p-xylene from a C.sub.8 aromatic hydrocarbon charge, successive use is made in combination of (1) a stage of separating low-purity p-xylene (75 to 98%) by simulated moving bed adsorption chromatography; (2) a stage of purifying and washing the low-purity p-xylene by recrystallization (-25 to +10.degree. C.); (3) a stage of catalytic isomerization of the charge which has been p-xylene-depleted by the separating stage (1); and recovering an isomerate which is then recycled to the charge. The solvent for desorption in stage (1) and washing in stage (2) is advantageously toluene.

Abstract: A twin tube air brake hose for delivering compressed air to brakes on a vehicle such as a truck includes a first tube which serves as a service tube and a second tube which serves as an emergency tube. The first tube and second tube have an inner layer surrounded by a reinforcing layer which is in turn surrounded by an outer rubber layer. The outer rubber layers of each tube are joined by a web which is unitary with the outer layers. Adjacent opposite ends of the twin tube brake hose, the tubes are separated to form free end portions, each of which have a metal fitting. Reinforcing bands are fitted around the twin tube air brake hose just inboard the tail ends to prevent the web from splitting.

Abstract: To reduce the benzene content of a hydrocarbon mixture that contains benzene and other hydrocarbons, the mixture is fed to a distillation column so as to separate an overhead distillate, a bottom residue, and a sidestream having a benzene content richer than in the distillate and in the residue; the resultant sidestream is sent to at least one permeation zone to permeate the benzene selectively and retain a retentate having a reduced content of benzene; and at least part of the retentate is recycled to at least one level in the distillation column, preferably two levels, one at above and one below the feedpoint to the column. The permeate benzene stream is optionally subjected to extractive distillation in order to increase the purity of the resultant benzene.

Abstract: A liquid silicone rubber base including (A) an alkenyl-containing organopolysiloxane, (B) a reinforcing silica filler, (C) a mixing assistant in the form of a silanol-containing compound, (E) an organohydrogen polysiloxane, (f) a platinum catalyst and optionally, (D) a wetting auxiliary catalyst is prepared by previously mixing 10-120 parts of component (A) with 1-35 parts of component (C) and 0-35 parts of component (D) to form a premix liquid, mixing the premix liquid with 100 parts of component (B) to form a premix power, and kneading the premix powder with the remainder of component (A). By adding a curing agent of organohydrogenpolysiloxane/platinum catalyst to the liquid silicone rubber base, there is obtained a liquid silicone rubber composition having improved fatigue endurance.