초록 ▼

It is disclosed that succinic acid and its derivatives that contain a branched aliphatic group on the 2 or alpha position of succinic acid form surfactants that exhibit a high order of or bioresistance to bacteriological degradation. Further, it has been discovered that these novel surfactants can b

It is disclosed that succinic acid and its derivatives that contain a branched aliphatic group on the 2 or alpha position of succinic acid form surfactants that exhibit a high order of or bioresistance to bacteriological degradation. Further, it has been discovered that these novel surfactants can be employed to prepare novel oil-in-water emulsions with lube oils such as mineral oil that are effective as cutting fluids for machining operations but provide an improved resistance to biodegradation to the cutting oil so formulated, without resorting to the inclusion of conventional biocides in the formulation. It has also been discovered that the bioresistance of the cutting fluid emulsion formulation can be further enhanced by using a branched aliphatic hydrocarbon oligomer or polymer as the lubricative component in the formulation. Cutting fluid emulsions so formulated are effective fluids in prolonging tool life and facilitating machining operations.

대표청구항 ▼

[ What is claimed is:] [1.] A method for increasing the resistance to biological degradation of a cutting fluid emulsion made from a bioresistant cutting fluid concentrate and water comprising:preparing the bioresistant cutting fluid concentrate by treating a lubricative basestock material with an a

[ What is claimed is:] [1.] A method for increasing the resistance to biological degradation of a cutting fluid emulsion made from a bioresistant cutting fluid concentrate and water comprising:preparing the bioresistant cutting fluid concentrate by treating a lubricative basestock material with an amount sufficient to impart bioresistant properties to the cutting fluid concentrate of a bioresistant surfactant composition comprising succinic acid, or derivatives thereof, containing at least one branched aliphatic substituent group, derived from a propylene oligomer, on the alpha carbon of the succinic acid, the substituent containing at least nine carbon atoms, at least three of which are tertiary carbon atoms; andblending the bioresistant cutting fluid concentrate with water, in the absence of a biocide, to produce a bioresistant emulsion.