초록 ▼

Lubricant base compositions for compression refrigeration are composed of 95 to 5% by weight of polyether polyols having a number average molecular weight from about 400 to about 5000 and 5 to 95% of esters made from polyhydric alcohols with alkanoic acids or esters made from alkanedioic acids with

Lubricant base compositions for compression refrigeration are composed of 95 to 5% by weight of polyether polyols having a number average molecular weight from about 400 to about 5000 and 5 to 95% of esters made from polyhydric alcohols with alkanoic acids or esters made from alkanedioic acids with alkanols. A refrigeration fluid is made from the base composition with the addition of selected hydrochlorofluorocarbons and hydrofluorocarbons so that the base composition is miscible with the refrigerant in the range from -20°C. to greater than 65°C.

대표청구항 ▼

A lubricant composition miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants in the range from -20°to greater than 65°C. and having a viscosity greater than 75 centistokes at 38°C. comprising: (A) about 95 to 5% of a polyether polyol which has the formula Z-[(CH2－CH(R1)－O－)n－(CH2－C

A lubricant composition miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants in the range from -20°to greater than 65°C. and having a viscosity greater than 75 centistokes at 38°C. comprising: (A) about 95 to 5% of a polyether polyol which has the formula Z-[(CH2－CH(R1)－O－)n－(CH2－CH(CH3)－O－)m－R2]p where Z is the residue of a compound having 1-8 active hydrogens, 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 5000, R2 is hydrogen or an alkyl group of 1 to 6 carbon atoms, p is an integer having a value equal to the number of active hydrogens of Z, and (B) about 5 to 95% of an ester selected from the group consisting of (1) esters made from polyhydric alcohols with alkanoic acids, and (2) esters made from alkanedioic acids with alkanols.