| 摘要 |
Azeotropic and pseudoazeotropic compositions containing difluoromethoxy-2,2,2-trifluoroethane with 2,2-dichloro-1,1,1-trifluoroethane or with 1,1-dichloro-1-fluoroethane. These compositions can be employed as solvents, especially for cleaning electronic components and for degreasing metals, as blowing agents, especially for the preparation of polyurethane foams or else as refrigerants. |
