Alliedsignal Inc.

3m Innovative Properties Company

Allied Chemical Corporation

Daniel Franklin Harnish

Donald Pickens

Michael Van Der Puy

David Nalewajek

David Paul Wilson

Rajat S Basu

Stephen Frederic Yates

Ellen L Swan

Peter B Logsdon

Addison Miles Smith

Andrew M Zweig

Bernard Taub

Joel E Rodgers

Philip E Jones

Richard J Brautigam

Gary J Zyhowski

Hepburn Ingham

A non-aqueous cleaning process uses an organic solvent for removing soil or surface contamination from contaminated articles such as printed circuit boards which are cleaned by immersion into a sump compartment of a cleaning tank containing the organic cleaning solvent. The organic solvent is preferably a hydrocarbon solvent. The cleaned articles, now coated with the organic cleaning solvent, are then disposed in a rinsing sump containing a fluorocarbon based rinsing solvent having an affinity for the organic cleaning solvent. The organic solvent is thus removed from the articles which are then dried without waste water as in a conventional solvent vapor degreasing solvent process.

Multiple solvent cleaning system

2-Chloro-1,1-difluoroethylene (R-1122) is removed from 1,1,1,2-tetrafluoroethane (R-134a) by contacting the R-134a in the vapor phase with chlorine in the presence of ultraviolet light providing an exposure of at least about 2 watts-hour/kg.

Process for removing 2-chloro-1,1-difluoroethylene from

A class of fluorinated polyols which when added to formulated dispersions used to make a magnetic particle based coating not only improves the dispersion of the particles in the formulation during manufacture but also improves the wear characteristics of the cured coating during use. The fluorinated polyol may be prepared either by the reaction of a diglycidyl ether with a diol or by the reaction of two diols with epichlorohydrin.

Magnetic coating compositions containing fluoropolyols

A novel class of fluorinated surfactant monomers which when blended and cured with conventional non-fluorinated monomers produces resins with dramatically modified surfaces. Resins which may be thus modified include urethanes, epoxides, acrylates, polyesters and other thermosetting materials.

Fluorinated surfactant monomers for polymer surface modification

Improved polyolefin foams, particularly polystyrene foams, and improved extrusion processability thereof are obtained by employing as blowing agent a mixture of from about 3 to about 70 weight percent monochloromonofluoromethane and from about 97 to about 30 weight percent of dichlorodifluoromethane.

Manufacture of fluorocarbon expanded polystyrene

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Orchard Park, NY, United States of America

Daniel Franklin Harnish