High viscosity overbased sulfonate detergent and marine cylinder oils containing same
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United States of America Patent
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Sep 3, 2002
Issued Date -
N/A
app pub date -
Sep 6, 2000
filing date -
Mar 12, 1998
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Abstract
An overbased calcium sulfonate detergent having a high viscosity is characterized by forming a clear solution in lubricating oil, having a TBN of about 400 or more, and having a viscosity of at least 180 mm.sup.2 /s at 100.degree. C. The high viscosity of the detergent allows for reduction in expensive high viscosity oil components of marine cylinder oils while maintaining selected TBN and viscosity parameters in the finished oil.
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