Polycarbonate and use thereof

Details Polycarbonate and use thereof Polycarbonate and use thereof

C - Chemistry, Metallurgy

08

G

C08G 64/02 (2006.01) C08G 64/18 (2006.01) C10M 107/32 (2006.01) C10M 107/34 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2087134

The polycarbonate of the invention is a polycarbonate derived from adducts such as propylene oxide adducts of polyglycerols. The lubricating oil of the invention comprises this polycarbonate, and if necessary, a specific polycarbonate having a -C2H4O- group and/or a -CH2CH(CH3)O- group in its main chain. The lubricating oil of the invention can be used as a lubricating oil for refrigerators such as automotive air-conditioner and electric refrigerator. In particular, the lubricating oil of the invention is suitable as a lubricating oil for refrigerator wherein high-viscosity lubricating oil is used, for example, lubricating oil for automotive rotary air-conditioner, and also suitable as lubricating oil for a refrigerator wherein ozone layer-nondestructive hydrogenated fluorocarbon such as R-134a is used as a refrigerant.

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