abstract |
The present invention relates to a composition comprising at least one organic compound (A) selected from the group consisting of perfluoro- (N-alkylmorpholine), hydrofluoroalkane, perfluoroalkane, hydrofluoroalkene, chloromethane, fluorinated ether, , A mixture (B) of at least one alkane or a cycloalkane, and at least one organic compound (C) selected from the group consisting of ketones, ethers and derivatives. |