Metal-Processing Oil Composition and Metal-Processing Method

Abstract

The present invention provides a water-soluble metal-processing oil composition which is excellent in putrefaction resistant properties and sparingly has any bad influence upon global environment and human body and a method for processing metals which makes use of the metal-processing oil composition. The metal-processing oil composition of the invention comprises an amine carrying a linear or branched alkyl group having not less than 4 carbon atoms (component A) in an amount ranging from 0.5 to 20% and an amine carrying a cycloalkyl ring or a benzene ring (component B) in an amount ranging from 0.5 to 20% and the method for processing metals is characterized in that it uses the metal-processing oil composition.

1 . A metal-processing oil composition comprising an amine carrying a linear or branched alkyl group having not less than 4 carbon atoms (component A) in an amount ranging from 0.5 to 20% and an amine carrying a cycloalkyl ring or a benzene ring (component B) in an amount ranging from 0.5 to 20%. 
   
   
       2 . The metal-processing oil composition as set forth in  claim 1 , wherein the component A is represented by the following general formula 1: 
     
       
         
         
             
             
         
       
     
     wherein R 1  represents an alkyl group having not less than 4 carbon atoms or an oxyalkyl group having not less than 4 carbon atoms; R 2  and R 3  represent at least one member selected from the group consisting of groups represented by the formula: (C x H 2x O) y H, H, alkyl groups each having not less than 4 carbon atoms or oxyalkyl groups each having not less than 4 carbon atoms; x is an integer ranging from 2 to 4 and y is 1 or 2. 
   
   
       3 . The metal-processing oil composition as set forth in  claim 1 , wherein the component B is at least one member selected from amines represented by the following general formulas 2 to 5: 
     
       
         
         
             
             
         
       
     
     wherein R 4  to R 11  may be the same or different and represent H or (C x H 2x O) n H, x is an integer ranging from 2 to 4 and n is an integer ranging from 1 to 3;
 R 12  and R 13  may be the same or different and represent H or C 6 H 11  (cyclohexyl group) or (C x H 2x O) n H, x is an integer ranging from 2 to 4 and n is an integer ranging from 1 to 3; 
 R 14  to R 16  may be the same or different and represent H or (C x H 2x O) n H, x is an integer ranging from 2 to 4 and n is an integer ranging from 1 to 3; 
 R 17  represents a group: C x H 2x , and x is an integer ranging from 2 to 4. 
 
   
   
       4 . The metal-processing oil composition as set forth in  claim 1 , wherein the component A is an amine represented by the foregoing general formula 1, wherein R 1  represents an alkyl group having 4 to 12 carbon atoms, R 2  and R 3  each represent at least one member selected from the group consisting of (C x H 2x O) y H, H and alkyl groups having 4 to 12 carbon atoms, x is an integer ranging from 2 to 4, and y is 1 or 2. 
   
   
       5 . The metal-processing oil composition as set forth in  claim 1 , wherein the component A is an amine represented by the foregoing general formula 1, in which R 1  represents an alkyl group having 4 carbon atoms, R 2  and R 3  each represent at least one member selected from the group consisting of (C x H 2x O) y H, H and alkyl groups having 4 carbon atoms, x is an integer ranging from 2 to 4, and y is 1 or 2. 
   
   
       6 . The metal-processing oil composition as set forth in  claim 1 , wherein the component A is a secondary amine represented by the foregoing general formula 1, in which R 1  represents n-butyl or t-butyl group, R 2  represents a group: (C x H 2x O) y H, R 3  represents H, x is an integer ranging from 2 to 4, and y is 1 or 2. 
   
   
       7 . The metal-processing oil composition as set forth in  claim 1 , wherein the component A is n-butyl monoethanolamine or t-butyl mono ethanol amine. 
   
   
       8 . The metal-processing oil composition as set forth in  claim 1 , wherein the component B is an amine represented by the foregoing general formula 2 or 3, in which R 4  to R 11  may be the same or different and each represent H or (C x H 2x O) n H, x is an integer ranging from 2 to 4 and n is an integer ranging from 1 to 3. 
   
   
       9 . The metal-processing oil composition as set forth in  claim 1 , wherein the component B is an amine represented by the foregoing general formula 2 or 3, wherein R 4  to R 11  represent H. 
   
   
       10 . The metal-processing oil composition as set forth in  claim 1 , wherein the component B is an amine represented by the foregoing general formula 4. 
   
   
       11 . The metal-processing oil composition as set forth in  claim 10 , wherein the component B is dicyclohexylamine. 
   
   
       12 . The metal-processing oil composition as set forth in  claim 10 , wherein the component B is an amine represented by the general formula 4, wherein R 12  and R 13  may be the same or different and each represent a group: (C 2 H 2x O) n H, x is an integer ranging from 2 to 4 and n is an integer ranging from 1 to 3. 
   
   
       13 . The metal-processing oil composition as set forth in  claim 12 , wherein the component B is an amine represented by the general formula 4, wherein R 12  and R 13  may be the same or different and each represent a group: (C 2 H 4 O) n H, and n is an integer ranging from 1 to 3. 
   
   
       14 . The metal-processing oil composition as set forth in  claim 1 , wherein the component B is an amine represented by the foregoing general formula 5. 
   
   
       15 . The metal-processing oil composition as set forth in  claim 14 , wherein the component B is an amine represented by the general formula 5, wherein R 14  to R 16  may be the same or different and each represent H or (C 2 H 4 O) n H, and n is an integer ranging from 1 to 3. 
   
   
       16 . A method for processing a metal characterized in that the method makes use of the metal-processing oil composition as set forth in  claim 1 .