Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Virginia Tech Intellectual Properties Inc

3m Innovation Properties Company

Dean S Milbrath

John G Owens

Richard M Flynn

Daniel R Vitcak

Patrick L Coleman

Hideto Yanome

Jerald K Rasmussen

Mark W Grenfell

Larry R Krepski

Steven M Heilmann

Margaret M Walker

George G I Moore

Christopher Stewart Lyons

Frederick E Behr

David R Gagnon

Julie B Stahl

Daniel D Krueger

George G Moore

Donald F Hagen

Paul E Hansen

William Hugold Velander

Gary J Drtina

Howard J Buttery

Oh-Seung Kwon

Richard H Ferber

Ann T Anich

Gary J Ortina

John C Campbell

Anuradha Subramanian

William E Barnett

This invention relates to a method for generating pollution credits while processing molten magnesium, aluminum, lithium, and alloys of such metals by contacting the molten metal or alloy with a gaseous mixture comprising a fluorocarbon selected from the group consisting of perfluoroketones, hydrofluoroketones, and mixtures thereof.

Method for generating pollution credits while processing reactive metals

The present invention provides a composition for cutting or abrasive working operations that comprises at least one lubricious additive and at least one hydrofluorocarbons. The present invention also provides a method for cutting or abrasive working.

Composition comprising lubricious additive for cutting or abrasive working and a method therefor

A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.

Cleaning process and composition using fluorocompounds

This invention relates to a method for preventing the ignition of molten magnesium by contacting the molten magnesium with a gaseous mixture comprising a fluorocarbon selected from the group consisting of perfluoroketones, hydrofluoroketones, and mixtures thereof.

Processing molten reactive metals and alloys using fluorocarbons as cover gas

Molten magnesium cover gas using fluorocarbons

Azeotrope-like compositions and their use

The invention provides azeotrope-like compositions consisting essentially of 1,1,1,3,3-pentafluorobutane and a fluorinated ketone, R C(O)CF(CF ) , where R is CF CF , CF CF CF , or (CF ) CF.

Cleaning process and composition using fluorocarbons

The invention provides azeotrope-like compositions consisting essentially of R,OCH,, where R,is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC- 225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).

In one aspect, this invention provides a fluid comprising one or more hydrofluoroether(s) and one or more lubricious additive(s) for the cutting and abrasive treatment of metal, cermet, or composite materials. In another aspect, the present invention provides a method of cutting and abrasively treating metal, cermet, or composite materials comprising applying to the metal, cermet, or composite workpiece and tool a fluid comprising a hydrofluoroether and a lubricious additive.

The invention provides azeotrope-like compositions consisting essentially of R,OCH,, where R,is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC-225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).

The invention provides azeotrope-like compositions consisting essentially of R,OC,H,, where R,is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.

The invention provides azeotropc-like compositions consisting essentially of R,OCH,, where R,is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC-225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).

The invention provides a non-flammable cleaning composition comprising (a) a major amount of one or more highly fluorinated compounds having a boiling point less than about 100&deg; C.; (b) a minor amount of one or more fluorinated compounds containing at least one aromatic moiety and having a boiling point between about 100&deg; C.and about 140&deg; C.; and (c) a minor amount of trans-1,2-dichloroethylene.

Growing community of inventors

Stillwater, MN, United States of America

Dean S Milbrath