초록 ▼

A mixed fluorocarbon refrigerant comprising 1,1,1,2-tetrafluoroethane and trifluoromethane provides a refrigeration temperature of -30.degree. C. or less. The composition can also contain a refrigerator oil and an additive. The additive is selected from the group consisting of saturated hydrocarbons

A mixed fluorocarbon refrigerant comprising 1,1,1,2-tetrafluoroethane and trifluoromethane provides a refrigeration temperature of -30.degree. C. or less. The composition can also contain a refrigerator oil and an additive. The additive is selected from the group consisting of saturated hydrocarbons, unsaturated hydrocarbons and aromatic hydrocarbons.

대표청구항 ▼

[ What is claimed is:] [1.]1. A mixed refrigerant, comprising:a mixture comprising 60 to 95% by weight 1,1,1,2-tetrafluoroethane, and 5 to 40% by weight trifluoromethane, said mixture further comprising isopentane, said isopentane being present in an amount of 1.4 to 50.7% by weight of the mixture,

[ What is claimed is:] [1.]1. A mixed refrigerant, comprising:a mixture comprising 60 to 95% by weight 1,1,1,2-tetrafluoroethane, and 5 to 40% by weight trifluoromethane, said mixture further comprising isopentane, said isopentane being present in an amount of 1.4 to 50.7% by weight of the mixture, to obtain a refrigeration temperature of less than or equal to -51.degree. C., and further comprising at least one additive selected from the group consisting of pentene and ethylbenzene.