Method for transferring heat

US8999192B2 · kind B2 · utility

Assignee

• SOLVAY SPECIALTY POLYMERS ITALY S.P.A. · IT

Inventors

• Pier Antonio Guarda · Arese, IT
• Gianfranco Spataro · Lissone, IT
• Padmanabhan Srinivasan · Milano, IT
• Giuseppe Marchionni · Milano, IT

Key dates

• Filing date: Sep 22, 2009
• Grant date: Apr 7, 2015
• Expiry date: May 25, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K5/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for transferring heat from a heat source to a heat sink, comprising using as heat transfer medium a composition comprising: at least one fluorinated fluid free from functional groups (fluid (H)); at least one functional (per)fluoropolyether (functional PFPE(1)) comprising recurring units (R1), said recurring units comprising at least one ether linkage in the main chain and at least one fluorine atom (fluoropolyoxyalkylene chain), and at least one functional end group chosen between —COOH and —CONH2; at least one functional (per)fluoropolyether (functional PFPE(2)) comprising recurring units (R1) as defined above and at least one functional end group chosen between —COCF3 and its hydroxylated derivative —C(OH)2CF3.