Proposed is a process for separating enantiomers from a racemic mixture by countercurrent extraction using at least two liquids of mutually differing chiralities, said liquids being wholly miscible and separated from each other by a phase with which they are immiscible. The separating, immiscible phase may be incorporated into a solid carrier which may be porous or not and preferably is in the for...

PCT No. PCT/DK96/00544 Sec. 371 Date Jun. 9, 1998 Sec. 102(e) Date Jun. 9, 1998 PCT Filed Dec. 18, 1996 PCT Pub. No. WO97/22411 PCT Pub. Date Jun. 26, 1997The decanter centrifuge has a bowl with a screw conveyor having a body (4) and a screw (7). Material to be separated into a light phase is supplied through inlet ports (6) in the body, and the heavy phase is discharged through discharge ports in...

An event detection device comprising a sensing means for generating an output signal in response to the detection of an event, the device comprising a fault monitoring system which comprises: comparator means for comparing the output signal with a threshold signal and for activating a timed sequence processor when the output signal exceeds the threshold signal on a first occasion, the time sequenc...

A portable and preferably hand-held X-ray generator for use in intraoral and other X-ray applications, and a new process of dental image acquisition which utilizes a novel receptor holder physically linked to the lightweight, portable generator, and a unique, articulating arm and cradle which allows one generator to be used in multiple operatories. The system's generator has a reduced X-ray output...

A quick-attach absorbent pad (14) for use with a panty (10) is provided with an upper surface (16) and a lower surface (18), the pad (14) being sized to fit against a crotch panel (12) of a panty (10) with the lower surface (18) of the pad (14) adjacent the crotch panel (12). The pad (14) further includes a plurality of hook fasteners (20) associated with the pad lower surface (18), which enables ...

An electrode-carrying catheter (10) comprises elongate, flexible tubing (12) defining a proximal end (14), a distal end (16), and an electrically insulative outer tubular layer (20) intermediate the ends, the tubing including a flexible electrically-conductive core (42) of wire and a flexible non-conductive core-covering layer (44) of plastic about the core. At least one electrically-conductive ri...

A product is provided which comprises particles of water-soluble or water-swellable polymeric material dispersed in a matrix of water-soluble or water-swellable bonding agent wherein the matrix includes water activatable effervescent agent and/or is foamed. Such products provide polymeric material in easily dispersible and dissolvable form.

An ethylene polymer extrusion composition having high drawdown and substantially reduced neck-in, a process for making such a composition and a process of using such a composition to prepare extrusion coatings, extrusion profiles and extrusion cast films are disclosed. The ethylene polymer extrusion composition is made of 75-95 weight percent of at least one ethylene alpha -olefin interpolymer an...

Aqueous emulsions comprise: (A) organopolysiloxane with unsaturated hydrocarbon groups, (B) methyl-hydrogen-polysiloxanes, (C) unreactive organopolysiloxane, (D) platinum group catalysts, (E) inhibitors, (F) optionally emulsifiers and/or thickeners, and (G) optionally other additives etc. Also claimed is a process for the production of these emulsions.

Apparatus and method of forming an opening through a tubular structure (28j) disposed within a subterranean well. The apparatus (330) comprises a cutting device (350) disposed within a tubular housing and a displacement device for displacing the cutting device (350) radially relative to the housing. The cutting device (350) is adapted to cut through the tubular structure (28j).

The invention relates to a process for preparing filled, expanded polymer materials based on polymethacrylate. An initial solution VL consisting of 5 to 70 parts by weight of methylmethacrylate and 1 to 15 parts by weight of polymethylmethacrylate prepolymer PP is prepared into which a particle-like inorganic filler FS in amounts of 30 to 80 wt.% based on the resultant suspension is introduced, wh...

L'invenzione riguarda un processo per rendere antigraffio e antiabrasione articoli formati a base di polimeri acrilici termoplastici consistente nel rivestire l'articolo con una composizione comprendente:(A) 55-95% in peso di almeno un monomero e/o oligomero (met) acrilico avente almeno due doppi legami (B) 5-25% in peso di monomeri e/o oligomeri di divinileteri e/o epossidi (C) 0-20% in peso di m...

A resilient composite article is provided having a polytetrafluoroethylene matrix and a predetermined volume. The composite article comprises PTFE energy expandable or expanded hollow polymeric particles, and silicone elastomer particles. The article is useful as gasketing material.

Articles and films are provided from ethylene-based polymers made using a metallocene catalyst system. Biaxial orientation dramatically improves clarity, stiffness, dart drop impact, puncture resistance, and shrink. Tensile strength at yield and ultimate tensile are also improved. Film stiffness, as measured by secant modulus, is increased by 300 % over an unoriented film of the same ethylene poly...

This invention relates to a process for producing oriented polyhydroxyalkanoate (PHA) that requires less stringent temperature control than previous processes. The process comprises melting the PHA, shaping preform from the melted PHA, stretching the preform a first time in at least one direction, and stretching the preform a second time. In one embodiment, the preform is cooled prior to stretchin...

A method for preparing a non-fibrous porous material essentially consisting of one or more hydrophilic polymers and/or pharmaceutical medicaments comprising forming an aqueous solution, sol or gel comprising one or more hydrophilic polymers and/or pharmaceutical medicaments, freezing the solution, sol or gel and extracting the frozen water selectively using a hydrophilic organic solvent being misc...

A film having printing on an outer surface of an outer film layer also has in the outer layer a secondary polymer in combination with a slip agent and/or antifog agent and/or antistatic agent. The secondary polymer serves to enhance the adhesion of the print to the outer film surface, so that the slip, antifog, and/or antistatic agent does not cause the film to have poor ink adhesion properties.

A method and system for accessing multiple databases from multiple suppliers in a user friendly manner over a public data network. A user's graphical interface system (GUI) comprises main menu window (50), a supplier list box (52) and (56) for displaying the suppliers present in the catalogs accessible by a customer. The GUI system also comprises an approval button (54A) for determining approval o...

An apparatus for adjusting the tension on a heating filament in a reactor used in carbon deposition on a substrate via chemical-vapor deposition is disclosed, as is a method for preventing breakage of the filaments during operation. The apparatus comprises a force regulator attached to an array of heating filaments. Preferably, the force regulator is adjustable and is adjusted prior to reactor ope...

"HEAT-SHRINKABLE FILMS BASED ON POLYOLEFIN COMPOSITIONS COMPRISING: (I) A LINEAR COPOLYMER OF ETHYLENE WITH ONE OR MORE alpha-OLEFINS (LLDPE); (II) A COPOLYMER OF PROPYLENE HAVING A PARTICULAR COMPOSITION AND CHARACTERISTICS. THE FILMS ARE CHARACTERIZED BY GOOD OPTICAL AND MECHANICAL PROPERTIES, IN PARTICULAR A HIGH TEAR RESISTANCE."