Abstract: The invention provides a process for separating fluorinated organic compounds from mixtures of the such compounds and hydrogen fluoride. More particularly, the invention provides a method for separating a fluorinated organic compound from a mixture containing at least one fluorinated organic compound and hydrogen fluoride by adding an inorganic salt to the mixture.
Type:
Grant
Filed:
July 3, 1996
Date of Patent:
September 7, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Richard Elmer Eibeck, Hang Thanh Pham, Valentine Theodore Zuba
Abstract: A compound having the formula: ##STR1## wherein: R is fluorine, hydrogen, an unsubstituted or substituted aliphatic or unsubstituted or substituted aromatic radical;R.sub.1 is an unsubstituted or substituted aliphatic radical, or unsubstituted or substituted aromatic radical; andR.sub.2 is hydrogen, an unsubstituted or substituted aliphatic radical, or unsubstituted or substituted aromatic radical.
Abstract: Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 1,1-dichloro-1-fluoroethane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams and as aerosol propellants.
Type:
Grant
Filed:
March 4, 1998
Date of Patent:
July 20, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Earl August Eugene Lund, deceased, Robert Christian Parker, Ian Robert Shankland, Gary Michael Knopeck
Abstract: The invention provides a method for separating fluorocarbons from mixtures of fluorocarbon and hydrogen fluoride. In particular, the invention provides a method for separating fluorocarbons, such as pentafluoropropane, from azeotropic mixtures of the fluorocarbon and hydrogen fluoride using compositional variations with pressure.
Type:
Grant
Filed:
November 20, 1997
Date of Patent:
July 6, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Hang Thanh Pham, Rajiv Ratna Singh, Hsueh Sung Tung, Daniel Christopher Merkel, David Goldschmidt, Tadeusz Piotr Rygas
Abstract: A process for the preparation of halogenated alkanes is provided. In particular, a process is provided for the highly selective preparation of haloalkanes, including 1,1,1,3,3-pentachloropropane, pentachlorobutane, and hepatchlorohexane, in good yield.
Type:
Grant
Filed:
August 14, 1995
Date of Patent:
May 11, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Tadeusz Piotr Rygas, Hsueh Sung Tung, Addison Miles Smith
Abstract: A process for producing a hydrofluorocarbon (HFC) comprising (a) providing a fluoropolymer-lined reactor; (b) adding a chlorinated organic compound in liquid phase and a fluorination agent to the reactor; and (c) reacting at least a portion of the chlorinated organic compound with at least a portion of the fluorination agent to produce the HFC.
Type:
Grant
Filed:
June 26, 1997
Date of Patent:
May 11, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Hsueh Sung Tung, Daniel Christopher Merkel, Addison Miles Smith
Abstract: The invention provides a process for the separation of azeotropic mixtures of fluorocarbons from hydrogen fluoride. The most preferred fluorocarbon for this invention is 1,1,1,3,3-pentafluoropropane, which is also known as HFC-245fa. The separation in conducted by adding sulfuric acid to the mixture while the mixture is in either the liquid or gaseous states.
Type:
Grant
Filed:
July 3, 1996
Date of Patent:
April 20, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Charles Francis Swain, Rajiv Ratna Singh, Hang Thanh Pham
Abstract: This invention relates to novel room temperature coalescable aqueous fluoropolymer dispersions and a process for their manufacture. These dispersions may be used in a variety of applications including high temperature thermoplastic coatings, polishes, room temperature formable paints and coatings, extrudable or injection moldable resins, and adhesives.
Type:
Grant
Filed:
September 20, 1996
Date of Patent:
March 9, 1999
Assignee:
Alliedsignal Inc.
Inventors:
Thomas F. McCarthy, Yan Chen, Peter Petersen
Abstract: A method of increasing the shelf life of a sterilant mixture of ethylene oxide and one or more halocarbons when the mixture is in contact with iron oxide on the surface of a storage vessel. Sufficient carbon dioxide is added to the mixture to reduce the reactivity of the iron oxide for converting ethylene oxide to reaction products of ethylene oxide. In an alternate embodiment, a hollow carbon steel vessel which holds a mixture of ethylene oxide and a halocarbon as a sterilizing gas has its inside surface passivated by forming a reaction product of iron oxide and carbon dioxide.
Type:
Grant
Filed:
October 16, 1995
Date of Patent:
February 23, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Stephen Alan Conviser, Arthur Edward Holmer
Abstract: A 100% solids polyurethane adhesive composition for bonding polymeric roofing materials to roof-deck substrates is provided which includes two components. The first component comprises a monomeric or polymeric diisocyanate, or a polyurethane prepolymer formed by the reaction of the monomeric or polymeric diisocyanate with a polyol. The second component comprises a polyol selected from the group consisting of a polyether or polyester polyol, an alkanolamine diol, a hydroxyl-terminated homopolymer of polybutadiene, and mixtures thereof. The first and second components are combined such that the ratio of isocyanate groups in the first component to the ratio of hydroxyl groups in the second component is from about 0.5:1 to 1.5:1.
Type:
Grant
Filed:
September 25, 1995
Date of Patent:
February 16, 1999
Assignee:
ADCO Products, Inc.
Inventors:
Wei-Jian Wen, Brian Jonathan Briddell, Kathleen Louise Lamb
Abstract: Novel surfactants and drying, drycleaning and soil repellency compositions containing such surfactants which utilize such surfactants. The surfactants are fluorine containing quaternary ammonium salts, and the drying, drycleaning and soil repellency compositions contain at least one halocarbon component and at least one of the fluorine containing surfactants. These compositions have the ability to remove water or aqueous films from the surfaces of a broad range of substrates and impart soil repellency to fabrics.
Type:
Grant
Filed:
December 5, 1996
Date of Patent:
February 9, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Gary John Zyhowski, David Nalewajek, Leonard Michael Stachura
Abstract: Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams.
Type:
Grant
Filed:
June 10, 1997
Date of Patent:
February 2, 1999
Assignee:
AlliedSignal Inc
Inventors:
Earl August Eugene Lund, Robert Christian Parker, Ian Robert Shankland
Abstract: An adsorbent containing composition for use in an insulating glass unit is provided. The composition includes a depolymerized butyl rubber having a low viscosity average molecular weight which is a carrier for moisture and volatile organic chemical adsorbing materials. The composition is economical to produce and results in a composition which effectively desiccates a sealed insulating glass unit without the problem of chemical fogging.
Type:
Grant
Filed:
June 24, 1996
Date of Patent:
January 26, 1999
Assignee:
Adco Products, Inc.
Inventors:
Kathleen Louise Lamb, Brian Jonathan Briddell
Abstract: A process for the preparation of 1,1,2,2,3-pentafluoropropane is provided. In the process of the present invention, 1,3-dichloro-1,1,2,2,3-pentafluoropropane is catalytically reduced, using a platinum group metal supported on alumina, to 1,1,2,2,3-pentafluoropropane.
Type:
Grant
Filed:
October 9, 1996
Date of Patent:
January 5, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Alagappan Thenappan, Michael Van Der Puy, David Nalewajek
Abstract: The invention provides a fluorinated surfactant for use with halocarbon and hydrofluoroether solvents. Additionally, the invention provides drying, dry cleaning, and soil repellency compositions containing a halocarbon or hydrofluoroether and a fluorinated surfactant.
Type:
Grant
Filed:
June 23, 1997
Date of Patent:
January 5, 1999
Assignee:
AlliedSignal Inc.
Inventors:
David Nalewajek, Leonard Michael Stachura, Gary John Zyhowski
Abstract: A 1,1,1,3,3,3-hexafluoropropane product of greater than about 99.9 weight percent purity containing less than about 100 parts per million unsaturated fluorocarbons and a method for its purification from a distillation mixture of 1,1,1,3,3,3-hexafluoropropane with at least one unsaturated fluorocarbon which method includes the steps of:a) reacting the mixture with chlorine to saturate the unsaturated fluorocarbons,b) washing the reacted mixture with an aqueous solution to remove residual hydrochloric acid and chlorine,c) removing the aqueous solution, andd) distilling the reacted mixture to obtain a 1,1,1,3,3,3-hexafluoropropane product of greater than about 99.9 weight percent purity containing less than about 100 parts per million unsaturated fluorocarbons.
Type:
Grant
Filed:
March 3, 1998
Date of Patent:
January 5, 1999
Assignee:
AlliedSignal Inc.
Inventors:
Daniel Christopher Merkel, Addison Miles Smith, Kim Marie Fleming
Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which result in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and at least one catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is less volatile than N,N-dimethylcyclohexylamine or the catalyst is a tertiary amine having at least one isocyanate-reactive functionality selected from the group consisting of --OH and --NH-- and the catalyst results in a decreased amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol and especially during use of the foam samples at a temperature of at least about 54.degree. C.
Type:
Grant
Filed:
June 7, 1995
Date of Patent:
November 24, 1998
Assignee:
AlliedSignal Inc.
Inventors:
Robert Christian Parker, Timothy Rech Demmin
Abstract: The invention provides a process for the preparation of 1,1,2,3,3,4-hexafluorobutane by telomerization of chlorotrifluoroethylene to produce 1,1,3,4-tetrachlorohexafluorobutane followed by reduction of that compound to 1,1,2,3,3,4-hexafluorobutane.
Type:
Grant
Filed:
June 27, 1997
Date of Patent:
October 20, 1998
Assignee:
AlliedSignal Inc.
Inventors:
Alagappan Thenappan, Michael Van Der Puy, Andrew J. Poss
Abstract: An improved coating composition having one or more polymeric binders dispersed in a liquid medium, wherein the improvement comprises an anti-sag and anti-settling effective amount of a copolymer comprising a polymeric backbone comprising recurring monomeric units derived from monomers selected from the group consisting of one or more .alpha.-olefins and one or more unsaturated carboxylic acids, said backbone having grafted thereto, by a covalent amide linkage, one or more polymeric grafts comprising at least one recurring monomeric unit selected from the group consisting of:--NHC(O)RC(O)NHR.sup.1 and --NH--R--C(O)--or a combination thereof, wherein R is an alkylene group of at least about 2 carbon atoms, and R.sup.1 is R or aryl.