LUBRICANT COMPOSITION AND A METHOD TO LUBRICATE A MECHANICAL DEVICE
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United States of America Patent
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Aug 18, 2016
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Oct 24, 2014
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Oct 29, 2013
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Abstract
A lubricant composition comprising a polyoxypropylene polymer, the polyoxypropylene polymer having been prepared by polymerizing propylene oxide with an initiator containing a labile hydrogen in the presence of a double metal cyanide (DMC) catalyst, the polyoxypropylene polymer having a number average molecular weight ranging from 5,000 g/mol to 20,000 g/mol, a kinematic viscosity at 40° C. ranging from 1,200 to 20,000 cSt, a viscosity index equal to or greater than 230, and a degree of unsaturation equal to or less than 0.05 meq/g is provided. Further provided is a method for lubricating a mechanical device.
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