Patent ID: 6316395
Filing Date: 2001-11-13
Classification: C09K,C10M,C10N

Abstract:
A lubricating oil for a flon refrigerant, said oil consisting essentially of as a main component, a polyglycol compound having a kinematic viscosity at 40.degree. C. of at least 30 cSt, a viscosity index of at least 150 and a low water content which is sufficient to cause the compound to be hygroscopic and which is not more than 50 ppm, and the polyglycol compound being represented by the general formula:R.sup.1 (O--R.sup.2).sub.n OR.sup.3wherein R.sup.1 and R.sup.3 are each hydrogen an alkyl group having 1 to 20 carbon atoms, R.sup.2 is a straight or branched alkylene group having 2 to 4 carbon atoms, and n is a number of at least 10.