Appeal No. 95-2950
Application No. 07/855,127
APPENDIX
66. 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; and
blending the bioresistant cutting fluid concentrate with
water, in the absence of a biocide, to produce a bioresistant
emulsion.
85. In an aqueous cutting fluid comprising water, an oil
component and a surfactant component for maintaining the oil
in the form of an emulsion, wherein the improvement comprises
use as a bioresistant surfactant of succinic acid or
derivative thereof containing branched aliphatic substituent
group, derived from a propylene oligomer, on the alpha carbon
of the succinic acid, said substituent containing at least
nine carbon atoms, at least three of which are tertiary carbon
atoms.
99. An aqueous cutting fluid comprising water, an oil
component and a bioresistant surfactant component for
maintaining the oil in the form of an emulsion, the surfactant
component is monoisobutyl-2-dodecenyl succinate.
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Last modified: November 3, 2007