Elf Atochem North America, Inc.

Atofina Chemicals, Inc.

Atochem North America, Inc.

Michael S Bolmer

Maher Y Elsheikh

Bin Chen

Pascal Michaud

John A Wismer

Cullen M Sabin

Alan J Maskell

Azeotropic and azeotrope-like compositions of 142/365 mfc, 142/methanol, and 142/365 mfc/methanol are provided, as are methods for using the same for cleaning, drying, foam blowing and the like.

Compositions based on 142

An uncatalyzed process is provided for the fluorination of 240 fa in the presence of a solvent.

Uncatalyzed fluorination of 240fa

A method for purifying a 133a product mixture containing olefinic impurities is provided wherein the mixture is contacted with a diene under conditions sufficient to convert the olefinic impurities to cyclohexenes.

Purification of HCFC-133A

A liquid phase process is provided for the preparation of 1233zd with reduced oligomer formation via the fluorination of 1230za with HF in the presence of a catalyst selected from TFA and triflic acid. The 1233zd is a known intermediate useful for preparing 245fa.

Catalyzed liquid phase fluorination of 1230za

A process for the preparation of 142 is provided, wherein 1130 is fluorinated in the gas phase in the presence of a catalyst which is a supported or unsupported fluorinated salt of one or more of chromium, iron, niobium, nickel, antimony, tin, tantalum or titanium. 142 is a known foam blowing agent.

Preparation of 142

An azeotrope containing HF and 1233zd is provided, as are methods for separating this azeotrope from mixtures of HF and 1233zd which are HF-rich or 1233zd-rich and methods for making use of the azeotrope and separation methods to improve processes for preparing 1233zd, an intermediate used in the preparation of 245fa. 245fa is a known foam blowing agent and refrigerant.

Azeotrope of HF and 1233zd

Nonazeotropic solvent blends useful for cold cleaning applications in an open environment containing an HCFC, HFC or PFC component having no flash point (such as 141b), a higher boiling nonflammable chlorinated solvent (such as perchloroethylene), and a moderately flammable, intermediate boiling, oxygenated organic solvent (such as n-butanol).

Cold cleaning solvents

Evaporative cold cleaning of objects wherein the object is contacted in an open environment with a nonazeotropic solvent blend containing an HCFC, HFC or PFC component having no flash point (such as 141b), a higher boiling nonflammable chlorinated solvent (such as perchloroethylene), and a moderately flammable, intermediate boiling, oxygenated organic solvent (such as n-butanol).

Cold cleaning process

Production of vinylidene fluoride by contacting 143a and HCl in the gas phase at 300-700 C.

Production of vinylidene fluoride

Partial or total separation of a mixture of 1,1,1,3,3-pentafluorobutane and 1,1-dichloro-1-fluoroethane by liquid-liquid extraction with solvents containing ethylene glycol, 2-butene-1,4-diol, ethanolamine, propylene glycol, or mixtures thereof, preferably ethylene glycol.

Solvent extraction of I-141B from I-365

Partial or total separation of a mixture of 1,1,1,3,4-pentafluorobutane and 1,1-dichloro-1-fluoroethane by liquid-liquid extraction with methanol based solvent mixtures, such as methanol with ethanolamine or ethylene glycol.

Solvent extraction of I-365 from I-141b

Partial or total separation of a mixture of vinylidene chloride and 1,1-dichloro-1-fluoroethane by liquid-liquid extraction with solvents having a Hansen solubility parameter of about 30.8-32.0, such as ethanolamine.

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Lower Providence, PA, United States of America

Michael S Bolmer