A device for determining surface moisture, especially of absorbent materials, comprises a Dove reflection prism, a radiation source of such a design that its beams, which are aligned parallel, perpendicularly strike one of the two small surfaces of the prism, a light trap which traps the light beams emanating from the other small surface, and a photoelectric transducer which is located in the angl...

Tires having white sidewalls are very popular in the United States and Canada. Tires having white lettering thereon are also very popular. This invention discloses a process for preparing such tires having decorative appliques thereon. By practicing the process of this invention, tires having better uniformity can be built at lower costs than when standard tire building techniques are utilized. Th...

A control system for a continuously variable transmission for a motor vehicle has a transmission ratio control valve (TR) for controlling the transmission ratio. The system has a drive pulley (14) having a shiftable disc and a hydraulic cylinder for operating the disc, a driven pulley (15) having a shiftable disc and a hydraulic cylinder for operating the disc, a belt (16) engaged with both pulley...

A method of making thermal insulating products comprising porous, lightweight, high temperature resistant inorganic particles in a polyimide foam matrix and the product thereof. A polyimide precursor powdered is mixed with about equal weight of flake-like porous inorganic particles to substantially uniformly coat the particles with powder. The mixture is placed in a mold and compressed slightly. T...

A repaired elastomer article has a hollow in a non-reinforced portion of the article. A cured preformed plug resides within the hollow and is adhered to the article through an amine curable polymer or prepolymer. The amine polymer or prepolymer is curable at ambient temperature. The preformed plug is made of a material which is compatible with the elastomer of the article. The preformed plug mater...

Waste water treatment for the removal of heavy metals is optimized by continuously removing and filtering a sample flow of treated waste water subject to pH level control to determine the presence of remaining metals in solution to be precipitated. Filtering of the sample removes metals precipitated by pH level control. Optimized pH level control can cause precipitation of most non-chelated and/or...

An apparatus and process for the vulcanization of laminar rubber products wherein the process comprises winding onto a drum an unvulcanized laminar rubber product together with a metallic band, applying a counter force to the metallic band as it is being wound up to prestress the wound up layers, applying substantially uniform pressure on the surface of the conducting band at the point where it an...

A container comprising an uniaxially oriented, polyolefin film, which film is prepared by melt blending a mixture of a polyolefin, an inert filler, a processing aid such as calcium stearate, and optionally a stabilizer, maintaining the moisture level in the melt blend below 700 ppm, casting a film, and uniaxially stretching the film at least about 2 times its original casting dimensions in one dir...

A composite, lightsafe masking film is disclosed which comprises a substrate formed of a plastic material, and a lightsafe layer peelably provided over the surface of said substrate. A fluorescent substance is incorporated in the lightsafe layer, or a fluorescent substance-containing layer is provided on the surface of the lightsafe layer or between the lightsafe layer and the substrate, so that a...

A method of making thermal insulating products comprising porous, lightweight, high temperature resistant inorganic particles in a polyimide foam matrix and the product thereof. A polyimide precursor powdered is mixed with about equal weight of flake-like porous inorganic particles to substantially uniformly coat the particles with powder. The mixture is placed in a mold and compressed slightly. T...

A novel primer composition containing a partial hydrolyzate of an aminoalkyl-substituted trialkoxysilane, a carboxylic acid salt of tin and a solvent is applied to a moisture-cured silicone substrate and dried to improve the adhesion of a subsequently applied coating. The composition and method are of particular value for painting a moisture-cured silicone substrate disposed on a support, such as ...

Described is a process for producing, in particulate form, aromatic polyimides based on one or more 2,2-bis[4-(aminophenoxy)phenyl]hexafluoropropanes. The process involves forming a solution of an equimolar mixture of (1) an aromatic tetracarboxylic dianhydride and (2) a 2,2-bis[4-(aminophenoxy)phenyl]hexafluoropropane as the sole or predominant aromatic diamine in (3) a solvent composed of (i) te...

PURPOSE:To obtain a superconducting material of oxide showing higher critical electric current than that of conventional superconducting material of Bi-Sr-Ca- Cu-based oxide and having a wide range of resourceful selection, containing In, Sr, Ca and Cu. CONSTITUTION:The superconducting material of oxide contains In, Sr, Ca and Cu and further may contain Bi. The composition (atomic ratio) of the su...

PURPOSE:To obtain a Bi-based oxide superconductor showing 105K critical temperature by subjecting a conjugated compound containing Bi, Sr, Cu and O and CaO to thermal diffusion reaction. CONSTITUTION:Bi2O3 powder is uniformly blended with SrCO3 powder and CuO powder in the ratio of Bi:Sr:Cu=2:2:3 to prepare mixed powder. Then the mixed powder is heated in an atmosphere at 750-840 deg.C, calcined a...

PURPOSE:To obtain a Bi-based oxide superconductor showing 105K or 110K critical temperature by subjecting a conjugated compound containing Bi, Sr, Cu and O and CaO to thermal diffusion reaction. CONSTITUTION:For example, Bi2O3 powder, SrCO3 powder and CuO powder are weighed so as to make ratio of Bi:Sr:Cu=2:2:3 and to prepare mixed powder. Then the mixed powder is calcined in an atmosphere at 750-...

PURPOSE:To improve stability to water content, weather resistance and solderability by containing Sr, Ca and Cu and Bi replacing part of Bi with In in a Bi-Sr-Ca-Cu based oxide superconducting material. CONSTITUTION:The aimed oxide superconducting material is formed of a composition consisting of an oxide containing Sr, Ca, Cu and Bi replacing part of Bi with In. Bi replacing part of Bi with In is...

PURPOSE:To efficiently producing high critical temperature phase by using Ca2PbO4 as supply source of Pb and replacing part of Bi with Pb while controlling a composition in a Bi-Sr-Ca-Cu-O based oxide superconductor. CONSTITUTION:One or more kind of substances are selected from a Bi-Sr-Ca-Cu- O based oxide superconductor, raw material powder capable of providing the above-mentioned oxide supercond...

PURPOSE:To realize to make superconductor at only desired position in a short time by applying microwave to molded article of specific raw material of superconductor in oxidative atmosphere, heating and burning. CONSTITUTION:Oxide of L (L are one or more selected from Y, Bi, Tl, Pb and lanthanoids) is mixed with oxide of Cu and carbonate of M (M are one or more selected from IIa group elements in ...

Scale-forming metal oxides and carbonates, such as cupric oxide, can be precipitated from an ammoniacal leaching solution with minimum scale buildup by distilling the solution in an externally heated distillation chamber mounted for rotation about a generally horizontal axis. The distillation chamber includes a plurality of axially spaced annular baffles defining a plurality of compartments contai...