Nonflammable compositions comprising fluorinated compounds and use of these compositions

US8318038B2 · kind B2 · utility

Assignee

• SOLVAY FLUOR GMBH · DE

Inventors

• Michael Marhold · Leverkusen, DE
• Helge Rau · Burgdorf, DE
• Karsten Borner · Sehnde, DE
• Christoph Meurer · Hannover, DE

Key dates

• Filing date: Feb 4, 2008
• Grant date: Nov 27, 2012
• Expiry date: Sep 4, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K3/26
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to non-flammable compositions comprising fluorinated compounds selected from the group consisting of hydrofluoroalkanes, hydrofluoroalkenes, partially or perfluorinated aromatic compounds, hydrofluoroethers or fluoroketones, 1,2-dichloroethylene, especially trans-1,2-dichloroethylene, and a stabilizer. These non-flammable compositions which preferably contain 1,1,1,3,3-pentafluorobutane, can be used especially as solvents for cleaning and defluxing electronic components and for degreasing metals. The compositions further may comprise a propellant, e.g. 1,1,1,2-tetrafluoroethane. These compositions are especially suitable as flushing agent.