US2006183651A1PendingUtilityA1

Lubricant composition based on fischer-tropsch derived base oils

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Individually held — no corporate assignee on recordPriority: Mar 10, 2003Filed: Mar 1, 2004Published: Aug 17, 2006
Est. expiryMar 10, 2023(expired)· nominal 20-yr term from priority
Inventors:David John Wedlock
C10G 45/64C10M 171/02C10G 2400/10C10G 65/043C10M 2205/173C10M 169/04
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Claims

Abstract

A lubricant composition having a dynamic viscosity at −35° C. of below 6200 cP as measured according to ASTM D 5293 and a mini rotary viscometer test value at 40° C. of below 60,000 cP as measured according to ASTM D 4684, having a Fischer-Tropsch derived base oil having a pour point from −15 to −31° C. and which base oil has been obtained by means of a catalytic dewaxing step, a pour point depressant additive 15 wt % or greater of a Detergent Inhibition additive package and Detergent Inhibitor additive package.

Claims

exact text as granted — not AI-modified
1 . A lubricant composition having a dynamic viscosity at −35° C. of below 6200 cP as measured according to ASTM D 5293 and a mini rotary viscometer test value at −40° C. of below 60,000 cP as measured according to ASTM D 4684, comprising a Fischer-Tropsch derived base oil having a pour point of from −15° C. to −31° C. and which base oil has been obtained by means of a catalytic dewaxing step, a pour point depressant additive, and, 15 wt % or greater of a Detergent Inhibition additive package.  
     
     
         2 . The lubricant composition of  claim 1 , wherein the content of the pour point depressant additive is greater than 0.1 Wt %.  
     
     
         3 . The lubricant composition of  claim 2 , wherein the content of the pour point depressant additive is between 0.1 wt % and 0.3 wt %.

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