Patent ID: 6821944
Filing Date: 2004-11-23
Classification: B01F

Abstract:
A pumpable surfactant composition, comprising: a surfactant of a alkanolamine salt of an alkyl phosphate ester, the composition having a solids content of about 60% by weight or more, the alkyl phosphate ester alkanolamine salt having a structure according to the following formula I or formula II: wherein R1 to R3 are, individually, selected from the group consisting of C8-22 linear or branched alkyl alkenyl, alkaryl and aralkyl hydrocarbon moieties, which optionally may have carbocyclic rings; wherein the subscripts a and b, individually, may be the same or different and are integers from 0 to 8 with the proviso that the sum of the a and b is less than or equal to 8; wherein the subscripts n and m, individually, may be the same or different and are integers of from 2 to 4; wherein Z1 and Z2 are, individually, selected from the group consisting of hydrogen, alkali metal, ammonia and an alkanolamine according to the following formula III with the proviso that at least one of Z1 and Z2 must be an alkanolamine according to formula III; wherein Z3 is an alkanolamine according to formula III; wherein formula III is according to the following: wherein R4 to R6 are, individually, selected from the group consisting of hydrogen and C1-8 linear and branched alkyl, alkenyl, alkaryl and aralkyl hydrocarbon moieties, which optionally may have carbocyclic rings; wherein at least one of the three amine substituents is different from the other two and that, for at least one of the three amine substituents, the sum of s and t or v and w or x and y is equal to or greater than 1 and the corresponding R is hydrogen; wherein the subscripts p and q, individually, may be the same or different and are integers from 2 to 4; wherein the subscripts s, t, v, w, x, and y, individually, may be the same or different and are integers from 0 to 10 with the proviso that the sum of all the subscripts is less than or equal to 12.