US2001044391A1PendingUtilityA1

Lubricating oil composition

23
Priority: May 13, 1994Filed: Feb 12, 1998Published: Nov 22, 2001
Est. expiryMay 13, 2014(expired)· nominal 20-yr term from priority
Inventors:Michio ShigaTakahiro MuramatsuHiromichi Matsuura
C10M 2223/047C10M 2223/045C10M 129/40C10N 2010/00C10M 2207/126C10M 137/105C10N 2040/08C10N 2010/04C10M 141/10C10M 2207/125C10M 2207/129
23
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A lubricating oil composition comprising a zinc dithiophosphate and a zinc saturated aliphatic monocarboxylate dissolved in a base oil, wherein the zinc dithiophosphate and zinc saturated aliphatic monocarboxylate are in the ratio of equivalents from 6:1 to 45:1.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A lubricating oil composition comprising a zinc dithiophosphate and a zinc saturated aliphatic monocarboxylate dissolved in a base oil, wherein the ratio of equivalents of zinc dithiophosphate to zinc saturated aliphatic monocarboxylate is from 6:1 to 45:1.  
     
     
         2 . A lubricating oil composition according to    claim 1    wherein the ratio of equivalents of zinc dithiophosphate to zinc saturated aliphatic monocarboxylate is from 7:1 to 12:1.  
     
     
         3 . A lubricating oil composition according to    claim 1    wherein the total amount of both zinc salts is in the range of 50 to 10,000 ppm expressed in terms of their zinc content.  
     
     
         4 . The lubricating oil composition of    claim 1   , wherein the base oil is a mineral oil having a viscosity in the range of 2 to 500 cSt at 40° C.  
     
     
         5 . The lubricating oil composition of    claim 1   , wherein the zinc dithiophosphate is zinc di-2-ethylhexyldithiophosphate.  
     
     
         6 . The lubricating oil composition of    claim 1   , wherein the zinc saturated aliphatic monocarboxylate is zinc 2-ethylhexanoate.  
     
     
         7 . A lubricating oil composition comprising a zinc dithiophosphate and a zinc saturated aliphatic monocarboxylate dissolved in a base oil, wherein the zinc dithiophosphate and zinc saturated aliphatic monocarboxylate are in the ratio of 1:0.001 to 1:0.08 by weight, and the total amount of both zinc salts is in the range of 50 to 10,000 ppm expressed in terms of their zinc content.  
     
     
         8 . The lubricating oil composition of    claim 7   , wherein the zinc dithiophosphate and zinc saturated aliphatic monocarboxylate are in the ratio of 1:0.008 to 1:0.07 by weight, and the total amount of both zinc salts is in the range of 100 to 1,000 ppm expressed in terms of their zinc content.

Join the waitlist — get patent alerts

Track US2001044391A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.