Abstract: Stable azeotrope-like compositions of 1,1,1,2,2,3,3-heptafluoropentane, C.sub.1 -C.sub.3 alkanol and optionally nitromethane have been discovered which are useful as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
Abstract: Compositions comprising difluoromethane, 1,1,1,2-tetrafluoroethane and a member selected from the group consisting of 1,1-difluoroethane, 1,1,1-trifluoroethane, propane and dimethyl ether having a vapor pressure from about 12.2 psia to about 18.4 psia at -40.degree. F., are useful as refrigerants.
Type:
Grant
Filed:
February 3, 1992
Date of Patent:
March 15, 1994
Assignee:
AlliedSignal Inc.
Inventors:
Rajiv R. Singh, David P. Wilson, Earl A. E. Lund, Ian R. Shankland
Abstract: Azeotrope-like compositions comprising 4-trifluoromethyl-1,1,1,2,2,3,3,5,5,5-decafluoropentane and a second component selected from the group consisting of methanol; ethanol; 1-propanol; 2-propanol; 2-methyl-2-propanol; 2-methyl-2-butanol; n-hexane; isohexane; 2-propanone; and 2-butanone and optionally nitromethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
Type:
Grant
Filed:
March 16, 1992
Date of Patent:
July 6, 1993
Assignee:
Allied-Signal Inc.
Inventors:
Rajat S. Basu, Richard M. Hollister, Kane D. Cook, Michael Van Der Puy
Abstract: Azeotrope-like compositions of 1-chloro-3,3,3-trifluoropropane and a mono- or dichlorinated C.sub.1 or C.sub.3 alkane have been discovered which are useful in a variety of applications including industrial cleaning, blowing agent and aerosol applications.
Type:
Grant
Filed:
November 26, 1991
Date of Patent:
May 25, 1993
Assignee:
Allied-Signal Inc.
Inventors:
Ellen L. Swan, Richard M. Hollister, Rajat S. Basu
Abstract: Stable azeotrope-like compositions consisting essentially of 1,1-dichloro-1-fluoroethane, dichloromethane and optionally alkanol which are useful in a variety of industrial cleaning applications and one of which is also useful as a blowing agent in the preparation of polyurethane foams.
Type:
Grant
Filed:
June 5, 1990
Date of Patent:
August 13, 1991
Assignee:
Allied-Signal Inc.
Inventors:
Ellen L. Swan, Rajat S. Basu, Richard M. Hollister
Abstract: Stable azeotrope-like compositions comprising dichlorotrifluoroethane, cyclopentane and nitromethane which are useful in a variety of industrial cleaning applications.
Type:
Grant
Filed:
December 14, 1989
Date of Patent:
August 13, 1991
Assignee:
Allied-Signal Inc.
Inventors:
Earl A. E. Lund, Rajat S. Basu, David P. Wilson, Ellen L. Swan
Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane, methanol and cyclopentane which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
Type:
Grant
Filed:
September 25, 1989
Date of Patent:
February 19, 1991
Assignee:
Allied-Signal Inc.
Inventors:
Leonard M. Stachura, Peter B. Logsdon, Ellen L. Swan, Rajat S. Basu
Abstract: Premixes of a polyol suitable for polyurethane or polyisocyanurate foam preparation and 1,1-dichloro-1-fluoroethane require no stabilizer to inhibit reaction between the fluorocarbon and the polyol. These premixes are useful for polyurethane and polyisocyanurate foam preparation.
Type:
Grant
Filed:
October 3, 1988
Date of Patent:
January 22, 1991
Assignee:
Allied-Signal Inc.
Inventors:
Earl A. E. Lund, Robert G. Richard, Ian R. Shankland, David P. Wilson
Abstract: A volatile solvent conservation modular unit and method for effecting solvent conservation is provided. The cooling coil modular unit is arranged to be disposed in the freeboard zone of a cleaning or degreasing apparatus that uses a volatile solvent. The freeboard zone chiller positioned above the vapor zone and the primary condenser to recover solvent from the relatively less dense solvent/air mixture escaping above the primary condenser and is formed so as to be disposed along one side of the degreaser vessel rather than on all four sides to minimize the obstruction of access into the vapor zone. This one-sided single freeboard chiller positioned on but one side produces a vapor suppression blanket that is effective and is readily retrofitted on existing apparatus without the need for dismantling of the existing unit.
Abstract: Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene and hexane. These mixtures are useful in a variety of vapor degreasing applications and as solvents in a variety of industrial cleaning applications including defluxing of printed circuit boards.
Type:
Grant
Filed:
December 22, 1989
Date of Patent:
November 27, 1990
Assignee:
Allied-Signal Inc.
Inventors:
Hillel Magid, David P. Wilson, Earl A. E. Lund
Abstract: Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene, acetone and hexane. These mixtures are useful in a variety of vapor degreasing applications and as solvents in a variety of industrial cleaning applications including defluxing of printed circuit boards.
Type:
Grant
Filed:
December 22, 1989
Date of Patent:
November 20, 1990
Assignee:
Allied-Signal Inc.
Inventors:
Hillel Magid, David P. Wilson, Earl A. E. Lund
Abstract: Stable azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane and a mono- or di-chlorinated C.sub.2 or C.sub.3 alkane which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
Type:
Grant
Filed:
November 13, 1989
Date of Patent:
October 2, 1990
Assignee:
Allied-Signal Inc.
Inventors:
Peter B. Logsdon, Leonard M. Stachura, Ellen L. Swan, Rajat S. Basu
Abstract: Azeotrope-like compositions comprising ethylene oxide and dichlorotrifluoroethane isomers or mixtures thereof are novel constant boiling compositions which are useful as sterilizing gases.
Type:
Grant
Filed:
August 30, 1989
Date of Patent:
September 4, 1990
Assignee:
Allied-Signal Inc.
Inventors:
James A. Batt, Robert G. Richard, Ian R. Shankland, David P. Wilson
Abstract: The invention relates to a novel process of etching a metal clad substrate which comprises contacting said substrate with one or more reactive gases, as for example ozone, to form one or more reaction products on the surface of the said metal which are more friable than said metal, and striking said reaction products with a plurality of abrasive particles.
Type:
Grant
Filed:
May 7, 1984
Date of Patent:
February 11, 1986
Assignee:
Allied Corporation
Inventors:
Thomas A. Schmitkons, George J. Samuels, Joseph M. Ilardi
Abstract: This invention relates to an improved soda ash slurrying device, which includes liquid and soda ash particle passages and separating means positioned between the interior openings of these passages to prevent contact between water or aqueous sodium carbonate solution and soda ash particles prior to their exiting the openings of the passages.
Abstract: Novel urease inhibiting phosphorothiolate compounds, urea based fertilizer compositions including such compounds, and methods and compositions for using such compounds to inhibit the activity of urease.
Type:
Grant
Filed:
February 3, 1984
Date of Patent:
August 27, 1985
Assignee:
Allied Corporation
Inventors:
Michael Van Der Puy, Jaroslav F. Kolc, Louis G. Anello, Larry L. Hendrickson, Milorad M. Rogic, Michael D. Swerdloff
Abstract: A method of emulsion copolymerization of ethylene and chlorotrifluoroethylene in the presence of a water soluble initiator and a water soluble fluorosurfactant. The fluorosurfactant having the general formula: CA.sub.3 (CF.sub.2).sub.B (C.sub.2 H.sub.4).sub.D -X wherein A is selected from H and F, B is 1 to 10, D is 1 to 6, and X is a hydrophilic group.
Abstract: Acetaldehyde oxime, a commercially useful intermediate in the production of pesticides, is prepared by oximating acetaldehyde with an aqueous hydroxylamine-containing solution to form an aqueous oximation reaction mixture and recovering acetaldehyde oxime from the aqueous oximation reaction mixture by distilling a mixture of acetaldehyde oxime and water directly from the aqueous oximation reaction mixture.
Type:
Grant
Filed:
December 18, 1980
Date of Patent:
April 6, 1982
Assignee:
Allied Corporation
Inventors:
John H. Bonfield, Stephen E. Belsky, Donald Pickens