Ethoxylated rapeseed oil acid methyl esters as new ingredients for detergent formulations

This paper examines the possible use of ethoxylation products of low-erucic rapeseed oil acid methyl esters as nonionic surfactants. The synthesis and composition of the products are described. The hydrolytic stability of the ester surfactants is studied in model water solutions and in compositions with the other ingredients of detergent formulations. Surface-active properties and detergency are investigated and indicate the suitability of the new surfactants as valuable ingredients in detergent formulations. Additionally, ecological evaluation shows that the ethoxylated rapeseed oil acid methyl esters discussed are mild to the skin, nontoxic and biodegradable. It is noted that the European oleochemical feedstock at present used to produce bio-diesel fuel is widely available at competitive prices. its alternative application in the detergent industry could therefore have good prospects if it proves to be feasible.