Synthetic metal working fluids for ferrous metals

Abstract

A water based mineral oil free metal working fluid contains by weight: 10% triethanolamine; 7% alkylamidocarboxylic acid; 7% ethylenediamine alkoxylate; 4% pentaerythritol alkoxylate; 2% ether carboxylate; 3.5% carboxylic acid; and the remainder chlorine free water.

1 . A water based mineral oil free metal working fluid comprising by weight about: 
 7-15% triethanolamine;    4-9% alkylamidocarboxylic acid;    4-9% ethylenediamine alkoxylate;    2-6% pentaerythritol alkoxylate;    1-4% ether carboxylate;    2-5% carboxylic acid;    and the remainder chlorine free water    
   
   
       2 . A method of producing a water based mineral oil free metal working fluid comprising: 
 (a) a first step of blending 15% by weight chlorine free water with 7-15% by weight triethanolamine and 4-9% by weight of alkylamidocarboxylic acid;    (b) a second step of adding 8% by weight chlorine free water to the step (a) blend;    (c) a third step of adding 4-9% by weight ethylenediamine alkoxylate, 2-6% by weight pentaerythritol alkoxylate, 1-4% by weight ether carboxylate, and 2-5% carboxylic acid to the step (b) blend; and    (d) adding to the step (c) blend sufficient chlorine free water to produce a 100% by weight blend.    
   
   
       3 . The method of producing a water based mineral oil free metal working fluid according to  claim 2 , wherein an additional step (d) about 0.01 to 1 volume percent of a biocide is added to step (c) blend.  
   
   
       4 . The method of producing a water based mineral oil free metal working fluid according to  claim 3 , wherein an additional step (e) about 1% by volume of defoaming agent is added to the step (d) blend.  
   
   
       5 . A water based mineral oil free metal working fluid comprising by weight about: 
 10% triethanolamine;    7% alkylamidocarboxylic acid;    7% ethylenediamine alkoxylate;    4% pentaerythritol alkoxylate;    2% ether carboxylate;    3.5% carboxylic acid;    and the remainder chlorine free water.