Polycarbonates, uses thereof, processes for preparing and purify

Details Polycarbonates, uses thereof, processes for preparing and purify Polycarbonates, uses thereof, processes for preparing and purify

1995-06-01

1996-10-15

Johnson, Jerry D.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Protein, carbohydrate, lignin, plant matter of indeterminate...

252 68, 549414, 549415, 536116, C10M10536, C10M10532

Patent

active

055651291

ABSTRACT:
The polycarbonates of the present invention include those of sucrose series having a specific cyclic structure, those of oligosaccharide and monosaccharide series other than the sucrose series, those derived from specific saccharides having no cyclic structure, those having a skeletal structure of pentaerythritol, neopentyl glycol or trimethylolmethane, and specific dicarbonates.
The lubricating oil and electrical insulating oil of the invention contain the above-mentioned polycarbonates.
The polycarbonates of the invention are excellent in compatibility with Freon R-134a (HFC) as well as in lubricating properties, detergency and electrical insulating properties, and are capable of providing lubricating oil for refrigerator, automotive engine oil, automotive gear oil, lubricating oil for rolling and lubricating oil for fiber, especially lubricating oil for which electrical insulating properties are required, and electrical insulating oil.

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