Azeotrope and azeotrope-like compositions of 1-bromopropane...

C - Chemistry – Metallurgy – 09 – D

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C09D 9/00 (2006.01) C11D 7/50 (2006.01) C23G 5/02 (2006.01) C23G 5/028 (2006.01) C11D 7/26 (2006.01) C11D 7/28 (2006.01)

Patent

CA 2295507

A cleaning and degreasing solvent comprising 1-bromopropane and a dichloropentafluoropropane. Preferably the dichloropentafluoropropane consists essentially of a mixture of 3,3-dichloro-1,1, pentafluoropropane and 1,3- dichloro-1,1,2,2,3-pentafluoropropane. The cleaning and degreasing solvent optionally includes stabilizers and co-solvents to ameliorate the chemical and physical properties of the cleaning solvents. The stabilizer and co-solvents include alcohols, ketones, ethers, acetals, nitroalkanes, epoxides, amines, saturated hydrocarbons, alkenes, alkynes and esters. The solvent composition of the present invention is useful for cleaning a wide variety of articles having metal, cloth, ceramic and plastic surfaces.

L'invention a trait à un solvant nettoyant et dégraissant renfermant du 1-bromopropane et un dichloropentafluoropropane. De préférence, le dichloropentafluoropropane est essentiellement constitué d'un mélange de 3,3-dichloro-1,1pentafluoropropane et de 1,3-dichloro-1,1,2,2,3-pentafluoropropane. Ce solvant contient éventuellement des agents stabilisateurs et des co-solvants visant à améliorer les propriétés chimiques et physiques de ces solvants nettoyants. L'agent stabilisateur et les co-solvants renferment des alcools, cétones, éthers, acétals, nitroalcanes, époxydes, amines, hydrocarbures saturés, alcènes, alcynes et esters. La composition solvant selon la présente invention est utilisée pour nettoyer un large éventail de produits présentant des surfaces métalliques, textiles, céramiques et plastiques.

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