Stabilized Fluids

Abstract

There is provided a fluid composition comprising (a) one or more non-chlorinated 3-isothiazolone, (b) 0.7% to 10% by weight, based on the weight of said fluid composition, one or more primary alkanolamine, (c) 2% to 30% by weight, based on the weight of said fluid composition, one or more tertiary alkanolamine, (d) one or more stabilizer selected from the group consisting of iodine-containing stabilizers, mercaptobenzothiazole, and mixtures thereof, wherein the molar ratio of said stabilizer to said non-chlorinated 3-isothiazolone is from 0.3:1 to 3:1.

1 . A fluid composition comprising
 (a) one or more non-chlorinated 3-isothiazolone,   (b) 0.7% to 10% by weight, based on the weight of said fluid composition, one or more primary alkanolamine,   (c) 2% to 30% by weight, based on the weight of said fluid composition, one or more tertiary alkanolamine,   (d) one or more stabilizer selected from the group consisting of iodine-containing stabilizers, mercaptobenzothiazole, and mixtures thereof,   
       wherein the weight ratio of said stabilizer to said non-chlorinated 3-isothiazolone is from 0.2:1 to 5:1. 
     
     
         2 . The fluid composition of  claim 1 , wherein said primary alkanolamine has a primary hydroxyl group, and wherein said alkanolamine has 4 or more carbon atoms. 
     
     
         3 . The fluid composition of  claim 1 , wherein said primary alkanolamine comprises one or more compound selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-(2-aminoethyl)ethanol, and mixtures thereof. 
     
     
         4 . The fluid composition of  claim 1 , wherein said tertiary alkanolamine has two or more —CH 2 CH 2 OH groups. 
     
     
         5 . The fluid composition of  claim 1 , wherein said tertiary alkanolamine comprises one or more compound selected from the group consisting of triethanolamine, bis(hydroxyethyl)methylamine, and mixtures thereof. 
     
     
         6 . The fluid composition of  claim 1 , wherein said stabilizer comprises one or more compound selected from the group consisting of iodic acid, periodic acid, iodate salts, periodate salts, iodopropynylbutylcarbamate, mercaptobenzothiazole, and mixtures thereof. 
     
     
         7 . The fluid composition of  claim 1 , wherein said stabilizer comprises one or more iodine-containing stabilizer. 
     
     
         8 . The fluid composition of  claim 1 , wherein said stabilizer comprises one or more compound selected from the group consisting of iodic acid, periodic acid, iodate salts, periodate salts, iodopropynylbutylcarbamate, and mixtures thereof. 
     
     
         9 . The fluid composition of  claim 1 , further comprising one or more metalworking additive selected from the group consisting of one or more fatty acid, one or more surfactant, and mixtures thereof. 
     
     
         10 . A dilute fluid composition formed by a process comprising diluting the fluid composition of  claim 1  by a factor of 10 to 50, wherein said dilute fluid composition is suitable as a metalworking fluid.