abstract |
The present invention describes chemical compounds having the following structure: Wherein R 1 is an alkyl group, an aryl group, an alkylaryl group or an arylalkyl group having at least 23 carbon atoms, R 2 is an alkylene group, an arylene group, an alkylarylene group or an arylalkylene group having at least two carbon atoms, X is a quaternary ammonium salt. |