Abstract: Use of a gaseous mixture, selected from the group consisting of—propylene in a concentration from 90% to 99% by weight and a gas selected from the group consisting of butene, ethylene and ethane or mixtures thereof in a concentration from 1% to 10% by weight; as replacement or alternative refrigerant gas for R404A, R507A and/or R407C, and/or other replacement or alternative refrigerants for R404A, R507A and R407C containing HFC (hydrofluorocarbons), HFO (hydrofluoro olefins) and HFE (hydrofluoro ethers).

Abstract: A method of providing a replacement or alternative refrigerant, wherein the replacement or alternative refrigerant is a gaseous mixture consisting of propane in a concentration from 71% to 79% by weight and butene in a concentration from 21% to 29% by weight as a replacement or alternative refrigerant gas for R134a and/or for other refrigerants which are replacements or alternatives to R134a containing HFC (hydrofluorocarbons), HFO (hydrofluoro olefins) and HFE (hydrofluoro ethers).

Abstract: A method providing a replacement or alternative refrigerant, wherein the replacement of alternative refrigerant is a gaseous mixture, selected from: the gaseous mixture consisting of: dimethyl ether in a concentration from 85% to 95% by weight and propylene in a concentration from 5% to 15% by weight, and the gaseous mixture consisting of: dimethyl ether in a concentration from 71% to 85% by weight and propane in a concentration from 15% to 29% by weight as a replacement or alternative refrigerant for R134a and/or for other refrigerants which are replacements or alternatives to R134a containing HFC (hydrofluorocarbons), HFO (hydrofluoro olefins) and HFE (hydrofluoro ethers).

Abstract: Use of a gaseous mixture, selected from the group consisting of—propylene in a concentration from 90% to 99% by weight and a gas selected from the group consisting of butene, ethylene and ethane or mixtures thereof in a concentration from 1% to 10% by weight; as replacement or alternative refrigerant gas for R404A, R507A and/or R407C, and/or other replacement or alternative refrigerants for R404A, R507A and R407C containing HFC (hydrofluorocarbons), HFO (hydrofluoro olefins) and HFE (hydrofluoro ethers).

Abstract: Use of a gaseous mixture selected from the group consisting of:—propane in a concentration from 71% to 79% by weight and a gas selected from the group consisting of isobutene and butene or mixtures thereof in a concentration from 21% to 29% by weight as a replacement or alternative refrigerant gas for R134a and/or for other refrigerants which are replacements or alternatives to R134a containing HFC (hydrofluorocarbons), HFO (hydrofluoro olefins) and HFE (hydrofluoro ethers).

Abstract: Use of a gaseous mixture, selected from the group consisting of:—dimethyl ether in a concentration from 85% to 95% by weight and propylene in a concentration from 5% to 15% by weight, and—dimethyl ether in a concentration from 71% to 85% by weight and propane in a concentration from 15% to 29% by weight as a replacement or alternative refrigerant for R134a and/or for other refrigerants which are replacements or alternatives to R134a containing HFC (hydrofluorocarbons), HFO (hydrofluoro olefins) and HFE (hydrofluoro ethers).