Alliedsignal Inc.

Honeywell International Inc.

Jeffrey Warren McKown

Rajiv R Singh

Hang Thanh Pham

Matthew H Luly

Charles L Redmon

Robert Pratt

Addison Miles Smith

Harold John Kieta

Hsueh Sung Tung

Michael Van Der Puy

Ian R Shankland

Andrew Joseph Poss

Raymond Hilton Thomas

Stephen A Cottrell

Yuon Chiu

Alagappan Thenappan

Gustavo Cerri

Roy P Robinson

Robert L Bell

Paul Gene Clemmer

Tadeusz Piotr Rygas

Mathew Hermes Luly

Michael Van Puy

John James Thompson

William James Hague

Nemesio Rogelio Viso

Stanley Michael Jaskot

Jay Philip Friedenson

Paul Frederick Kunkel

Methods for etching or removing oxide scale from a substrate by applying a composition containing a polymer and an effective amount of hydrofluoric acid and maintaining the composition on the substrate until the substrate is etched or the oxide scale is removed.

HF etching and oxide scale removal

The present invention provides catalysts and processes for the fluorination of hydrohalomethanes. In particular, the invention provides a process for the fluorination of hydrohalomethanes using hydrogen fluoride and a Lewis Acid catalyst. More specifically, catalysts and a process for the fluorination of dichloromethane are provided.

Catalyst and process for the fluorination of hydrohalomethanes

The present invention provides compositions that are intimate mixtures of hydrogen fluoride and a polymer. The compositions of the invention are less hazardous and, therefore, more conveniently stored, transported, and handled in comparison to pure hydrogen fluoride. Further, the hydrogen fluoride may be readily recovered from the compositions of the invention for use.

Hydrogen fluoride compositions

A method for separating water from a chemical mixture is provided. In the process of the invention, water is separated from a chemical mixture by contacting the chemical mixture with a water-soluble polymer.

Process for separating water from chemical mixtures

A method for separating hydrogen fluoride from a chemical mixture is provided. In the process of the invention, hydrogen fluoride is separated from a chemical mixture containing hydrogen fluoride by contacting the chemical mixture with a hydrogen fluoride binder. The separated hydrogen fluoride may be recovered from the hydrogen fluoride binder.

Process for hydrogen fluoride separation

Fluorination processes using hydrogen fluoride-containing fluorinating agents that are safely and easily handled, transported, and stored and that also exhibit good reactivity are provided. More particularly, the invention provides processes for producing fluorinated products using fluorinating agents comprising hydrogen fluoride and a carrier that may be an acid salt or a water-soluble polymer.

Fluorination process using hydrogen fluoride-containing fluorinating

This invention relates to catalysts for alkylation reactions and their preparation. More particularly, the invention relates to an alkylation process using a hydrogen fluoride-containing alkylation catalyst, which catalyst may be safely and easily handled, transported, and stored.

Alkylation process using hydrogen fluoride-containing alkylation

This invention relates to a process for producing 1,1,1,2-tetrafluoroethane (HFC-134a). The process reacts, 1,1,1-trifluoro-2-chloroethane (HCFC-133a) and hydrogen fluoride in a first reactor. The product resulting from the first reaction step is brought to a second reactor together with trichloroethylene and hydrogen fluoride. The second reaction is conducted at a higher temperature than the first reactor. Optionally, HCl is removed prior to removal of the crude HFC-134a product. Unreacted HCFC-133a, trichloroethylene and hydrogen fluoride may be recycled back to the first reactor.

Process for the manufacture of 1,1,1,2-tetrafluoroethane

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East Aurora, NY, United States of America

Jeffrey Warren McKown