US2012214719A1PendingUtilityA1

Lubricating composition

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Assignee: GARCIA OJEDA JOSE LUISPriority: Oct 26, 2009Filed: Oct 26, 2010Published: Aug 23, 2012
Est. expiryOct 26, 2029(~3.3 yrs left)· nominal 20-yr term from priority
Inventors:Jose Luis Garcia Ojeda
C10N 2040/252C10N 2030/04C10M 2215/28C10M 2207/028C10N 2030/02C10N 2030/52C10M 159/20C10M 2203/1006C10M 169/045C10M 2203/1025C10N 2010/04C10M 2219/046C10M 159/22C10M 169/04C10M 2205/02C10M 157/06C10M 141/08C10M 159/24
12
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Claims

Abstract

The present invention provides a lubricating composition at least comprising: a base oil; and a detergent; wherein the detergent comprises at least 30 mol %, based on the total amount of detergent, of a sulphonate detergent having a B1SI (Base Number) of from 0.1 to 80 mg KOH/ g; wherein the detergent comprises from 30 to 70 mol %, based on the total amount of detergent, of a phenate detergent; wherein the lubricating composition comprises at least 4 wt. % of detergent, based on the total weight of the composition; and wherein the lubricating composition has a TBN (total base number) (according to ASTM D 2896) of at least 10 mg KOH/g.

Claims

exact text as granted — not AI-modified
1 . A lubricating composition at least comprising:
 a base oil; and   a detergent;   wherein the detergent comprises at least 30 mol %, based on the total amount of detergent, of a sulphonate detergent having a BN (Base Number) of from 0.1 to 80 mg KOH/g;   wherein the detergent comprises from 30 to 70 mol %, based on the total amount of detergent, of a phenate detergent;   wherein the lubricating composition comprises at least 4 wt. % of detergent, based on the total weight of the composition; and   wherein the lubricating composition has a TBN (total base number) (according to ASTM D 2896) of at least 10 mg KOH/g.   
     
     
         2 . The lubricating composition according to  claim 1 , wherein the detergent comprises at least 35 mol % of the sulphonate detergent. 
     
     
         3 . The lubricating composition according to  claim 1  wherein the sulphonate detergent has a BN of at most 50 mg KOH/g. 
     
     
         4 . The lubricating composition according to  claim 1  wherein the detergent comprises at least 35 mol % of the phenate detergent. 
     
     
         5 . The lubricating composition according to  claim 1  wherein the phenate detergent is an over-based detergent having a BN of at least 190 mg KOH/g. 
     
     
         6 . The lubricating composition according to  claim 1  wherein the composition comprises at least 8 wt. %. 
     
     
         7 . The lubricating composition according to  claim 1  wherein the composition has a TBN (Total Base Number) value of at most 75 mg KOH/g. 
     
     
         8 . The lubricating composition according to  claim 1  wherein the base oil comprises at least 50 wt. %. 
     
     
         9 . The lubricating composition according to  claim 1  wherein the composition is a marine diesel engine oil. 
     
     
         10 . Use of a lubricating composition according to  claim 1  in order to improve deposit formation control properties.

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