A method of creating a borehole in an earth formation is provided, in a selected direction relative to an adjacent borehole formed in the earth formation. The method comprises arranging electromagnetic source means in a first of said boreholes at a plurality of locations along the length thereof, said electromagnetic source means inducing an electromagnetic field extending into a second of said bo...

The instant invention is directed to a method of solvent extraction. The steps of the method include: providing a dual-skinned asymmetric membrane; providing a feed containing a solute; and providing a solvent. The feed and the solvent are contacted across the membrane. The solute of the feed is extracted, and forming thereby a raffinate and an extract.; La presente invencion está dirigida a un mé...

A nonwoven fiber and fabric are provided wherein the fabric has comparable strength characteristics to conventional fabrics yet is softer. The fibers are a blend of a high crystallinity polypropylene polymer and a random block copolymer of polypropylene and polyethylene. The fabric of this invention may be laminated to other spunbond layers, meltblown nonwoven fabrics or films. The nonwoven fabric...

A collapsible chair has an adjustable in-use position and a folded transport position. A seat is supported by opposite pairs of front and rear legs pivoted together at their upper ends. Opposed pairs of outwardly extending front and rear retainer pins on the seat engage front and rear tracks on the legs to support the seat and also to enable the seat and legs to be folded together for transport. A...

The computer case (10) provides a main packing (14) for a microcomputer, the packing defined by a "C" shaped rigid frame (26) and a corresponding shock absorbing pad (31), a fourth side of the packing space defined by the frame being selectively closed by a padded access door (44). A handle and/or shoulder strap (22) is riveted to the upper side of the "C" shaped frame. The access door is integral...

There is now provides a polyisocyanate based rigid closed cell foam made by reacting an isocyanate with a polyol composition in the presence of a blowing agent, where the polyol composition contains at least: a) an aromatic amine initiated polyoxyalkylene polyether polyol having an hydroxyl number of 200 meq polyol/g KOH or more. b) an aliphatic amine initiated polyoxyalkylene polyether polyol hav...

There is now provided storage stable polyol compositions and polyisocyanate based rigid closed cell foam made by reacting an organic isocyanate with a polyol composition in the presence of a blowing agent, where the polyol composition contains at least: a) an aromatic amine initiated polyoxyalkylene polyether polyol having an hydroxyl number of 200 meq polyol/g KOH or more, b) an aliphatic amine i...

There is now provided a method for making a polyisocyanate based rigid closed cell foam made by reacting an organic isocyanate with a polyol composition made up of at least: a) an aromatic amine initiated polyoxyalkylene polyether polyol having an hydroxyl number of 200 meq polyol/g KOH or more; b) an aliphatic amine initiated polyoxyalkylene polyether polyol having an hydroxyl number of 200 meq p...

The present invention discloses polyurethane moulded articles, which are produced by making polyisocianates to react with polyol compositions obtained by polyurethane and/or polyurea waste chemical decomposition in a mould. Polyol compositions employed in this invention have an OH value from about 100 to about 500 mg of KOH/g, a water content from 0 to about 5 percent by weight, and a viscosity at...

Polyethyleneterephthalate (PET) originating from the sorted collection of solid urban refuse can be regraded and recycled as such or mixed with virgin PET if treated at high temperature with an oxazoline of general formula:

The present invention refers to a process to recycle carpet residues containing polyamide by extracting polyamide from carpet residues with an extraction agent containing an aliphatic alcohol, after which polyamide is recovered from extract. Process according to the present invention provides a polyamide high yielding. The presence of another constituents normally used in carpets manufacturing doe...

A one coat, waterborne costing system for a polypropylene substrate comprises a mixture of an acrylic resin latex and a latex or chlorinated polyolefin resin.; Un sistemaa de revestimiento llevado por las aguas de una capa para un substrato de polipropileno comprende una mezcla de látex de resina acrílica funcional con ácido, un látex de resina de poliolefina clorada y un agente de reticulacion re...

The present invention refers to a continuos emulsification method capable of emulsifying high viscosity organopolysiloxane and capable of making a continuous mass production. A composed extruder is used which barrel 1 contains at least two spindles equipped with mixing means 3 installed in parallel. In each spindle there are elevations and depressions formed along axial direction, and respective s...

An improved method is described for the fusing, joining or seaming of cellulosic materials. The method utilizes a solution of selected organometallic compounds or metal oxides to rapidly crosslink opposing, overlapping cellulosic sufrfaces to provide secure seams. Enhanced seam strength is achieved by a subsequent moisture treatmen. The tubular cellulosic casings are well-suited for the manufactur...

A rubber elastic block copolymer has at least one block A made of polymerised units of a vinyl aromatic monomer that forms a hard phase and/or a block B with diene monomers that forms a first rubber elastic (soft) phase, and at least one elastomer block B/A with polymerised units of both a vinyl aromatic monomer and a diene that forms if required a second or additional soft phase. The glass transi...

The invention pertains to a method for coating polycarbonate moldings, characterized in that a molding compound (b) produced by hydrolytic polycondensation of an aluminum compound of an organofunctional silane and an oxide component is deposited in a thickness of 2 to 200 'mu'm on the surface of a molding of polycarbonate based on a diphenol of formula (Ia), wherein R1 and R2 are, independently of...

An air-operated combination diaphragm spring brake has a tamper-resistant seal provided between a head (46) and a spring side of a flange case (18) which together form a spring chamber (16) housing a power spring (72). The head (46) has an annular rim (70), and the flange case has an annular flange (74) with a diaphragm (48) sandwiched therebetween. An annular lip (76) on annular rim (70) extends ...

An improved method is described for the fusing, joining or seaming of cellulosic materials. The method utilizes a solution of selected organometallic compounds or metal oxides to rapidly crosslink opposing, overlapping cellulosic surfaces to provide secure seams. Enhanced seam strength is achieved by a subsequent moisture treatment. The tubular cellulosic casings are well-suited for the manufactur...

Plasma assisted polymerization and deposition of a very thin inner surface coating in a plastic or metal container without an undesirable increase in container surface temperature is provided to change the surface properties of the internal plastic surface of a container by reaction of the surface with a reactive gas which has been energized to produce a plasma or the surface is activated by a pla...

The invention provides dental cement compositions and methods of using them for binding hard tooth material, metal and ceramic. The cement compositions include shelf stable complexes of ethylenically unsaturated monomers reacted with cations. The cements have superior adhesion to tooth without separtely acid etching dentin or enamel. Compositions are useful as dental luting cements, liners, pit an...