Quenching oil compositions

Abstract

Quenching oil composition comprising (1) an oil having kinematic viscosity (ASTM Test Method D-445) at 40° C. ranging from about 4 to about 45 mm 2 sec −1 (about 40 to about 210 Saybolt Universal Seconds (SUS)) and having a saturated content from about 80% to about 100%; (2) an aliphatic polyolefin having Mn ranging from about 300 to about 10,000; and (3) at least one member selected from members of the groups consisting of (a) a metal salt of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids and alkaline earth metal salts of hydrocarbyl substituted saligenin derivatives; and optionally, at least one member selected from members of the groups consisting of (b) hydrocarbyl substituted succinic esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides ester-amine salts, amide-amine-salts and acid-amine salts.

1 . A quenching oil composition comprising 
 (1) an oil having kinematic viscosity at 40° C. ranging from about 40 to about 200 SUS and having a saturated content from about 80% to about 100%;    (2) an aliphatic polyolefin having {overscore (M)} n  ranging from about 300 to about 10,000; and    (3) at least one member selected from members of the groups consisting of 
 (a) a metal salt of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids and alkaline earth metal salts of hydrocarbyl substituted saligenin derivatives; and optionally  
 (b) hydrocarbyl substituted succinic derivatives selected from the group consisting of esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides ester-amine salts, amide-amine-salts and acid-amine salts.  
   
     
     
         2 . The composition of  claim 1  wherein (1) the oil is a mineral oil and/or synthetic oil.  
     
     
         3 - 8  (canceled)  
     
     
         9 . The composition of  claim 1  wherein said aliphatic polyolefin comprises polyisobutylene.  
     
     
         10 . The composition of  claim 1  wherein (2) the polyolefin is an olefin-polyene copolymer, wherein the olefin contains from about 3 to about 8 carbon atoms and the ratio of moles of olefin to moles of polyene ranges from about 100:1 to about 1:1.  
     
     
         11 . (canceled)  
     
     
         12 . The composition of  claim 1  wherein (2) the polyolefin is an isobutylene-diene copolymer comprising from about 0.5 to about 5 moles of units derived from diene per mole of copolymer based on {overscore (M)} n  of copolymer.  
     
     
         13 . The composition of  claim 1  wherein (2) the polyolefin is an olefin-polyene copolymer, wherein the olefin contains from 3 to about 8 carbon atoms and weight ratio of olefin to polyene ranges from about 250:1 to about 1:4.  
     
     
         14 - 15  (canceled).  
     
     
         16 . The composition of  claim 1  comprising at least one member selected from the group consisting of (3)(a) a metal salt of hydrocarbyl substituted phenols, salicylic acids, carboxylic acids, and sulfonic acids and alkaline earth metal salts of hydrocarbyl substituted saligenin derivatives.  
     
     
         17 . The composition of  claim 16  wherein (3)(a) comprises a metal salt of sulfur or methylene coupled hydrocarbyl substituted phenols or salicylic acids.  
     
     
         18 . The composition of  claim 16  wherein the metal ratio of metal salts of phenols, saligenin derivatives and salicylic acids ranges from about 0.5 to about 5 and the metal ratio of metal salts of sulfonic acids ranges from about 1 to about 20.  
     
     
         19 . The composition of  claim 16  wherein the metal salt (3)(a) has TBN ranging from about 45 to about 900.  
     
     
         20 . The composition of  claim 16  wherein the metal salt is an alkaline earth metal salt.  
     
     
         21 . The composition of  claim 16  comprising a metal salt of a hydrocarbyl substituted phenol.  
     
     
         22 . The composition of  claim 21  wherein the metal salt is a Mg or Ca methylene coupled C 7-15  aliphatic group substituted phenate.  
     
     
         23 . The composition of  claim 16  comprising a metal salt of a hydrocarbyl substituted salicylic acid.  
     
     
         24 . The composition of  claim 16  comprising a metal salt of a hydrocarbyl substituted sulfonic acid.  
     
     
         25 . The composition of  claim 16  comprising a metal salt of a hydrocarbyl substituted carboxylic acid.  
     
     
         26 . The composition of  claim 16  comprising an alkaline earth metal salt of a hydrocarbyl substituted saligenin derivative.  
     
     
         27 . The composition of  claim 1  further comprising at least one member selected from the group consisting of (3)(b) hydrocarbyl substituted succinic esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides, ester-amine salts, amide-amine salts and acid-amine salts.  
     
     
         28 . (canceled)  
     
     
         29 . The composition of  claim 27  comprising hydrocarbyl substituted succinic imides.  
     
     
         30 . The composition of  claim 1  comprising from about 0.2% to about 10% by weight of the aliphatic polyolefin (2), and from 0.2% to about 10% by weight of (3)(a) a metal salt of hydrocarbyl substituted phenols, salicylic acids and sulfonic acids and alkaline earth metal salts of hydrocarbyl substituted saligenin derivatives; and from 0 to about 5% by weight of (3)(b) hydrocarbyl substituted succinic esters, amides, ester-amides, imides, amine salts, acid-esters, acid-amides, ester-amine salts, amide-amine salts and acid-amine salts.  
     
     
         31 - 34  (canceled)  
     
     
         35 . A method of heat treating metals comprising heating the metal to a temperature above its critical temperature and thereafter cooling the metal by immersion thereof into a quenching oil bath comprising the quenching oil composition of  claim 1.