Cleaning agents for dispersing hydrocarbon(s) on hard water - comprising mixts. of alkoxylated phosphoric acid tri:ester(s) of two types

摘要

Cleaning agents for dispersing hydrocarbons comprise a mixt. of phosphoric triestens of two types of formula R-O(A)-P(O) (OB)xOH (OB)xCH (I) and R-O(A) 2P(O)- (OB)2OH (II). In the formulae R is a 6-20 linear or slightly branched residue of an alcohol or acid; A is a mixt. of ethoxy and propoxy gps. in which the ethoxy/propoxy ratio is 2 and the number of propoxy gps. is 10 with 1-4 ethoxy gps. when R is 12C, 1-10 gps. when R is 12-15C and 1-15 gps. when R is 16-20C; B is -CH(R')-CH2 in which R' is H, methyl or ethyl and x, y and z are 1-4. Agents are used for treating hydrocarbon spillages on hard water which reduces the effectiveness of known surfactants. In addn. the agents are biodegradable and non-toxic.