Disclosed is a shaped article comprising a continuous oriented polymer matrix having dispersed therein microbeads of a polymer which are at least partially boredered by void space, the microbeads being present in an amount of about 5-50% by weight based on the weight of said oriented polymer, said void space occupying about 2-60% by volume of said shaped article. Preferably, the microbeads are cro...

The invention proposes a method for the production of nestable parts, at least one part being produced by powder diecasting. To compensate for the shrinkage of the part produced by powder diecasting and, if required, to provide additional play, a separating layer (5) of plastic is applied between the nestable parts. After the casting operation, the separating layer and the binder are eliminated du...

PURPOSE:To provide a pneumatic tire capable of reducing a puncture by a nail and capable of markedly decreasing a leak speed even when an air leak is generated. CONSTITUTION:In a pneumatic tire 1A, a seal substance layer 4 is arranged between two rubber compsn. layers 3 arranged to the inside surface of the crown part of the carcass ply 2 of the tire. The seal substance layer 4 becomes a state fil...

The use of 1,1-difluoroethane (HFC-152a) with a minimum amount of water, preferably in the absence of water, as the blowing agent is discolored as an efficient route to a rigid closed-cell polyurethane or polyisocyanurate foam of improved cell structure and excellent insulation properties.

A method for disinfecting contact lenses comprises contacting the lens with an isotonic aqueous solution comprising an effective disinfecting amoutn of tromethamine (preferably 0.6 to 2 percent) for a time sufficient to disinfect the lens. Other aspects include adding to the solution from 0.01 to 1 weight percent chelating agent (preferably disodium EDTA) and/or additional microbicide.

The bond strength between a diamond and the substrate onto which it is deposited by the chemical vaporization method is decreased to the point where the diamond can be removed from the substrate as a free standing monolithic sheet. The bond strength can be decreased by polishing the substrate, removing corners from the substrate, slow cooling of the substrate after deposition, an intermediate temp...

A vehicle braking system is characterized by being constructed for self-purging and removal of air from the brake lines to thereby prevent the accumulation of air therein so as to provide a more effective braking system. The braking system has a master cylinder including a fluid reservoir for supplying brake fluid to the braking system and a hydraulically controlled disk brake having a caliper inc...

An endoscopic instrument is described having a fluid chamber, a cannula, a shell, a first locking mechanism, and a probe with a second locking mechanism. The fluid chamber has proximal and distal ends. The hollow cannula is coupled to the distal end of the fluid chamber. The port is located at the proximal end of the fluid chamber. The shell houses the fluid chamber, the port, and the first lockin...

A novel cardiac pacing lead. The pacing lead has a conductive wire comprising a single filament of a low modulus metal. A surgical needle is mounted to a distal end of the wire and an electrode needle is mounted to the proximal end of the wire. An integral anchor is formed in a distal, uninsulated section of the wire for anchoring the pacing lead in heart muscle. The wire has a "hand" similar to m...

Pervaporation processes and apparatus with few moving parts. Ideally, only one pump is used to provide essentially all of the motive power and driving force needed. The process is particularly useful for handling small streams with flow rates less than about 700 gpd. Specifically, the process can be used to treat waste streams from glycol dehydrator regeneration units.

A method of production of a plastic laminate having a protective layer on a foamed layer comprising coating plastisol containing a vinyl chloride resin or an acrylic resin having epoxy group and having average particle diameter of 0.05 to 5 mm and plasticizer as the essential components on the surface of vinyl chloride resin layer containing an organic foaming agent, then forming the combined laye...

This invention is a method for converting fine particles of superabsorbent polymers into larger particles. The invention is primarily directed to aqueous solution processes for preparing superabsorbent polymers. In such aqueous solution polymerization methods, the polymerization reaction product is a high viscosity gel which is dried and ground into particles. In this grinding step, a portion of t...

A crosslinkable polymer composition comprises an olefin copolymer or graft copolymer with hydrolysable saline groups and a silanol condensation catalyst, as well as a silane compound with at least one hydrolysable organic group. The polymer composition is characterized in that the silane compound has a compatibility with the polymer composition of at least 0.035 mole hydrolysable groups per 100 g ...

An epoxy resin composition for forming prepregs is disclosed which includes an epoxy resin having at least two epoxy groups, a latent curing agent for the epoxy resin in an amount of 0.5-3.0 equivalents per equivalent of the epoxy groups of the epoxy resin, and a reactive, viscosity-increasing agent in an amount of 0.2-3.0 parts by weight per 100 parts by weight of the epoxy resin. The epoxy resin...

In an optical apparatus according to the present invention, a light-absorbing film is formed between a light-receiving element and an optical semitransparent film formed on the light-receiving element to cause the light-receiving element to partially receive incident light. In addition, in an optomagnetic recording polarization optical apparatus according to the present invention, a prism for guid...

An apparatus for reproducing information from a recordable optical disc having an information recording area for recording a plurality of information pieces and an index information recording area for recording index information with respect to the plurality of information pieces. The apparatus includes a driving device for rotationally driving the optical disc, a pickup device for irradiating a l...

The present invention provides crosslinked, spherical copolymer beads of methacrylic anhydride which are suitable as precursors for weak-acid and other ion exchange resins, affinity chromatography materials and other materials which require spherical polymers having reactive anhydride groups for their preparation. The present invention also provides a process for making such copolymers.

A mud pulse telemetry system (10) for use as part of a measuring-while-drilling system comprises an uplink transmitter (18) including a multi-level encoder (34) and a continuous-value mud pulse transmitter (30); and a receiver (22) including a multi-level decoder (36). A downlink system can also be provided comprising a transmitter (24). The uplink and downlink signals can be frequency multiplexed...

PURPOSE:To finely disperse 211 phase particles acting as the pin centers in the crystal grains consisting of 123 phase without using any expensive metal by sintering, slowly cooling, heat-treating in a nonoxidizing atmosphere and then heat-treating in an oxidizing atmosphere, moldings contg. a rare earth element (RE), Ba, Cu, O and Ca under specified conditions. CONSTITUTION:The temp. of the moldi...

PURPOSE:To produce a Bi-Sr-Ca-Cu-O superconducting thin film having a very flat surface, a high critical temp. and excellent crystallinity and very suitable for use in the production of a Josephson junction device, a three-terminal device and a device for high frequency. CONSTITUTION:Film formation is carried out by chemical vapor growth at <=900 deg.C film formation temp. on a substrate made of a...