The Dow Chemical Company

Dow Global Technolgoies LLC

Other

Edward E Timm

Ellen M Dubensky

Ann M McCombs

Donald I Townsend

Julie L Board

Brock M Walker

Guo-shuh J Lee

Walter J Rozmus, Jr

Robert Thomas Nilsson

Gary R Strickler

William J Rievert

Eric A Ness

James M Macki

Daniel J LaPrairie

Clifford A Kelto

Richard H Solem

Victor J Caldecourt

John P Henley

Dennis Wade Jewell

Charles William Lipp

Douglas E Leng

Leopoldo Salinas, Iii

Ann M Gulau

Kevin T Pate

Tarver Gayle Snedecor, Jr

James Everett Clark

A process and apparatus are described for converting a feed that is substantially comprised of halogenated materials, and especially byproduct and waste chlorinated hydrocarbons as are produced from a variety of chemical manufacturing processes, to one or more higher value products via a partial oxidation reforming reaction step. These products can be in the form of a useful or salable acid product and/or a product synthesis gas comprised of carbon monoxide and hydrogen, or the reaction product including the same hydrogen halide, carbon monoxide and hydrogen components can be employed as a feed in the synthesis of a different useful or salable product.

Production of one or more useful products from lesser value halogenated materials

A consolidated complex shaped article having a density of at least about 95 percent of theoretical density is prepared by placing a plurality of separate bodies in an arrangement, such that each separate body is in contact with at least one other separate body to form an aggregate body and wherein at least one of the separate bodies is essentially dense. The material of each separate body is comprised of a ceramic, a cermet or a metal. The aggregate body is then consolidated at a consolidating temperature, superatmospheric pressure and time at temperature and time at superatmospheric pressure sufficient to form a consolidated shaped article. In consolidating the aggregate body, the consolidating temperature is a temperature that fails to form a liquid within at least one separate body and the superatmospheric temperature is applied for at least a portion of the time at the consolidating temperature.

Method to form dense complex shaped articles

A spinal support device for applying a directed and concentrated force on the sacrum to position the sacrum and pelvis to thereby establish a desired spinal posture when in a seated position. The device provides isolatable force on the sacrum from the sacral base line downwardly to a bottom seat surface and for a width across an individual's back approximately equal to twice the dimension of the posterior portion of the individual's sacrum.

Spinal support system for seating

The present invention relates to a catalytic process for the preparation of alkylene glycols from alkylene oxide and water. Further, the invention relates to a method of preservation of catalysts in alkylene oxide containing systems. More in particular, it has been found that particular acids have a positive effect on the lifetime of catalyst systems based on anion exchange resins, and particularly those in the bicarbonate form.

Process for the preparation of alkylene glycols

The present invention relates to a catalytic process for the preparation of alkylene glycols from alkylene oxide and water. Further, the invention relates to a method of preservation of catalysts in alkylene oxide containing systems. More in particular, it has been found that polycarboxylic acids, preferably oxalic acid, have a positive effect on the lifetime of catalyst systems based on anion exchange resins, and particularly those in the bicarbonate and oxalate forms.

Rhenium-bound tungsten carbide composites

A powdered admixture of a boron, carbon, nitrogen or silicon derivative of a first metal is combined with a source of a second metal and, optionally, a source of a third metal or an iron-group metal, subjected to densification conditions (heat and pressure), partially reacted and converted to a hard, wear resistant material. The wear resistant material contains an amount of the first metal derivative as well as a material of varying stoichiometry which is the partial reaction product of components of the powdered admixture. The material may also contain residual, unreacted portions of components other than the first metal derivative. Articles formed from this material can be useful as, for example, nozzles in abrasive or nonabrasive waterjet cutting machines and various parts of wire drawing apparatus.

High hardness, wear resistant materials

A powdered admixture of a boron, carbon, nitrogen or silicon derivative of a first metal is combined with a source of a second metal and, optionally, a source of a third metal or an iron-group metal, subjected to densification conditions (heat and pressure), partially reacted and converted to a hard, wear resistant material. The wear resistant material contains an amount of the first metal derivative as well as a material of varying stoichiometry which is the partial reaction product of components of the powdered admixture The material may also contain residual, unreacted portions of components other than the first metal derivative. Articles formed from this material can be useful as, for example, nozzles in abrasive or nonabrasive waterjet cutting machines and various parts of wire drawing apparatus.

A powdered admixture of a metal and its boron, carbon, nitrogen or silicon derivative is, when subjected to densification conditions, partially reacted and converted to a hard, wear resistant material. Such a material, when formed from an admixture of tungsten carbide and tungsten, contains tungsten monocarbide and (di-tungsten) carbide. Other choices of metal and metal derivatives produce at least one compound having a stoichiometry which differs from that of starting metal derivative. Articles formed from this material can be useful as, for example, nozzles in abrasive or nonabrasive waterjet cutting machines and various parts of wire drawing apparatus.

A powdered admixture of a boron, carbon, nitrogen or silicon derivative of a first metal, e.g., tungsten carbide, and a source of a second metal, e.g., molybdenum subcarbide when the second metal is molybdenum, is, when subjected to densification conditions, partially reacted and converted to a hard, wear resistant material. Such a material, formed from an admixture of tungsten carbide and molybdenum subcarbide, contains tungsten monocarbide and at least one mixed tungsten/molybdenum carbide. This material has a Vickers hardness of at least about 2200 kg/mm.sup.2 measured using a 1 kg load. Articles formed from this material can be useful as, for example, nozzles in abrasive or nonabrasive waterjet cutting machines and various parts of wire drawing apparatus.

A process for preparing dense, consolidated bodies, the process comprising compressing in a forging press an isostatic die assembly, the assembly comprising a preform surrounded by a fluid pressure-transmitting medium, the medium and the preform being contained in a shell having an open top; under sufficient conditions of temperature, time and pressure that a dense, consolidated body of desired shape is formed, and then recovering the body by separating the body from the fluid pressure-transmitting medium.

Process for the densification of material preforms

Spheroidal polymer beads having a uniform size are prepared by polymerizing uniformly sized monomer droplets formed by the vibratory excitation of a laminar flow jet of monomeric material flowing in a continuous liquid medium containing a suitable suspending agent. In the apparatus employed, the means for vibratorily exciting the laminar flow jet is parallel to the axis of the monomer jet. For example, the laminar flow jet of a monomer mixture and a polymerization initiator can be subjected to vibratory excitation and the resulting monomer droplets are polymerized to yield copolymer beads. The apparatus employed allows for the preparation of large numbers of monomer droplets.

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Freeland, MI, United States of America

Edward E Timm