Refrigeration lubricants

Details Refrigeration lubricants Refrigeration lubricants

C - Chemistry, Metallurgy

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C10M 119/18 (2006.01) C09K 5/04 (2006.01) C10M 105/52 (2006.01) C10M 107/34 (2006.01) C10M 111/04 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2011420

T 5966 FF ABSTRACT REFRIGERATION LUBRICANTS The invention provides refrigeration lubricants comprising a mixture of a hydrofluorocarbon and a polyoxyalkylene glycol hemi-ether of the formula RO-[(EO)m(PO)n]-H (I) wherein EO represents ethyleneoxy, PO represents propyleneoxy, R is C1-6 alkyl, and m and n represent average numbers of ethyleneoxy and propyleneoxy moieties in each hemi-ether molecule such that m/(m+n) is in the range 0 to 0.5 and n/(m+n) is in the range 0.5 to 1 and the hemi-ether has viscosity at 40°C (DIN 51 562) in the range 10 to 46 mm2/s, and their preparation. PS14019

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