초록 ▼

A refrigeration fluid compositions for compression refrigeration which have an upper solution critical temperature equal to or greater than 60°C. are composed of (A) selected hydrochlorofluorocarbons and hydrofluorocarbons and (B) polyether polyols having viscosities of greater than 80 centistokes a

A refrigeration fluid compositions for compression refrigeration which have an upper solution critical temperature equal to or greater than 60°C. are composed of (A) selected hydrochlorofluorocarbons and hydrofluorocarbons and (B) polyether polyols having viscosities of greater than 80 centistokes at 38°C. and having a number average molecular weight from about 400 to about 2000 wherein the polyols are the residue of an active hydrogen compound such as glycerine or ethylene diamine.

대표청구항 ▼

Fluid compositions for use in compression refrigeration which have an upper solution critical temperature equal to or greater than 65°C. comprising (A) a refrigerant selected from the group consisting of hydrofluorocarbons and hydrochlorofluorocarbons, and (B) a liquid lubricant base selected from t

Fluid compositions for use in compression refrigeration which have an upper solution critical temperature equal to or greater than 65°C. comprising (A) a refrigerant selected from the group consisting of hydrofluorocarbons and hydrochlorofluorocarbons, and (B) a liquid lubricant base selected from the group consisting of polyether polyols which (1) have a viscosity of greater than 80 centistokes at 38°C. and (2) are represented by the formula Z－((CH2－CH(R1)－O－)n－(CH2－CH(CH3)－O－)m－H)p where Z is the residue of an active hydrogen compound selected from the group consisting of glycerine, pentaerythritol, sorbitol, ethylene diamine, diethylene triamine, hydrazine, ethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine and triisopropanolamine, R1 is hydrogen, ethyl, or mixtures thereof, n is 0 or a positive number, m is a positive number, n+m is a number having a value which will give a polyether polyol with a number average molecular weight range from about 400 to about 2000, and p is an integer having a value equal to the number of active hydrogens of Z.