The allylic ethers may, for example, be of formula CH2???CR???CH2OBnR wherein R??? is chosen from H and CH3, B is an ethylenoxy radical, n is an integer ranging from 0 to 100, R is a hydrocarbon-based radical chosen from alkyl, arylalkyl, aryl, alkylaryl and cycloalkyl radicals comprising from 8 to 30 carbon atoms.