LUBRICANT OIL COMPOSITION
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United States of America Patent
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Issued Date -
Jan 7, 2016
app pub date -
Feb 27, 2014
filing date -
Mar 4, 2013
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Abstract
A lubricating oil composition of the invention contains: a lubricating base oil; a component (A) that is a polymethacrylate having a mass average molecular weight in a range from 30,000 to 600,000; and a component (B) that is an olefin copolymer having a 95% weight-loss temperature of 500 degrees C. or less as calculated by differential thermal analysis and having 40 or less of SSI (Shear Stability Index).
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