Union Carbide Corporation

Liquid Carbonic Corporation

Tarancon Corporation

Liquid Air Corporation

Tarancon Research & Engineering Services Inc.

Gregorio Tarancon

Arthur W Francis

Efrain Acevedo

Robert E Franklin

Abel Saud

An apparatus for the direct fluorination of solid particles of polymeric resins capable of being fluorinated in which the solid particles are in contact with the gaseous phase of fluorine/dense carrier fluid in a tubular reactor with an internal mechanical device comprising a rotatable shaft with screw flight, multiblade or wire brush that mechanically fluidizes the solid phase. The design of the internal mechanical device is a function of the diameter and length of the tubular reactor and the reaction time and other physical properties of the solid particles of polymeric resins. The internal mechanical device prevents agglomeration of the solid particles and promotes uniform contact with the gaseous phase by inducing mobility to the solid particles. The enhancement of solid surface contact with the gaseous phase assists the reaction between the solid polymeric resin and the elemental fluorine, as well as the heat dissipation into the dense carrier fluid.

Tubular mechanical reactor

An apparatus for the direct fluorination of solid particles of polymeric resins capable of being fluorinated in which the solid particles are contacted by a flow of a mixture of fluorine and carrier fluid in a solid-gas reactor. In the solid-gas reactor, the fluid flow continuously agitates or fluidizes the solid particles to maintain the solid particles in motion. The degree of motion of the solid particles is a function of the linear velocity of the fluid and of the physical properties of the solid particles such as the solid bulk density, particle size, geometry of the solid particle, and adhesion or agglomeration of solid particles. The solid-gas reactor can be arranged with single or multi-reactors in batch or continous mode.

Apparatus for direct fluorination of polymeric resins

A method for sterilizing the surface of an article contaminated with bacteria and bacterial spores which comprises exposing the surface to an effective amount of a fluorine interhalogen compound sterilizing agent such as gaseous chlorine trifluoride or chloride pentafluoride, or mixtures thereof. The surface to be sterilized can be subjected to a gaseous atmosphere of controlled humidity immediately prior to or during exposure to the gaseous sterilant.

Use of interhalogen compounds as a sterilizing agent

This invention concerns the discovery of a new fluid that promotes the fluorination of polymeric materials more safely, more completely, and more efficiently than the fluids used in the prior art. The new fluid is called 'dioxifluorine,' which is a mixture of carbon dioxide and fluorine where carbon dioxide is the carrier fluid and fluorine is the reactant.

Direct fluorination of polymeric materials by using dioxifluorine fluid

An apparatus and a method is disclosed for generating fluorine which has an improved efficiency by reducing the resistance between the electrodes and by reducing the chemical action on the electrodes through a design whereby the structure and positioning of the electrodes as well as the flow of electrolyte provide this reduction of the resistance. The shape of the cell unit constituting the electrode structure reduces the chemical action on the electrode by increasing the flow of electrolyte past the electrode structure.

Electrolytic gas generator

The method of treating a surface chemically by exposing the surface to a treating gas at high pressure for a time during which a surface reaction occurs, and then reducing the pressure of the gas for a time and removing reaction byproducts and then continuing the cycles of high pressure and low pressure until the surface reaction is completed.

Method of treating surfaces

A batch process for the halogenation of solid polymeric or metallic material comprising the following steps:

Halogenation treatment

In a batch process for the treatment of the surface of a solid polymeric material by a gas reactive therewith comprising the following steps:

Surface treatment of a solid polymeric material with a reactive gas

A method of mixing a gas and a vaporizable liquid to provide a gaseous mixture having a constant composition, regardless of change in rate of flow, except as hereinafter provided, comprising:

Method of mixing a gas and a vaporizable liquid

A process for the separation of a second mixture consisting essentially of ethylene oxide and dichlorodifluoromethane from a first mixture comprising ethylene oxide, dichlorodifluoromethane, and air comprising passing the first mixture through two zones connected in series, in a closed system, according to the following steps:

Sterilization gas separation process

A process for the purification of a mixture of silane and impurities comprising passing the mixture through a succession of zones connected in series, in a closed system, according to the following steps: (a) passing the mixture, in gaseous form, through a zone containing porous, granular charcoal as an adsorbent at a temperature in the range of about minus 40.degree. C to about minus 80.degree. C to provide a mixture of silane and remaining impurities in gaseous form; (b) passing the gaseous mixture from step (a) through a zone containing porous, granular magnesium silicate as a adsorbent at a temperature in the range of about minus 40.degree. C to about minus 80.degree. C to provide a mixture of silane and remaining impurities in gaseous form; (c) passing the gaseous mixture from step (b) into a distillation zone in such a manner that the impurities are removed overhead in gaseous form and at least about 95 per cent by weight of the silane is converted to liquid bottoms; and

Process for the purification of silane

A process for the production of silane in a reaction vessel comprising (i) a single closed chamber, (ii) a hollow tube open at both ends, said tube being disposed in the lower portion of the chamber; and (iii) means for circulating liquid in the lower portion of the chamber in such a manner that the liquid flows in a downward direction through the tube and in an upward direction outside of the tube Comprising the following steps:

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Woodbridge, NJ, United States of America

Gregorio Tarancon