As used herein, “alkyl” groups include straight chain and branched {HEAD ~ alkyl groups} having from 1 to about 20 carbon atoms, and typically from 1 to 12 carbons or, in some embodiments, from {TAIL ~ 1 to 8 carbon atoms} 
having typically from
As used herein , “ alkyl ” groups include straight chain and branched { HEAD ~ alkyl groups } having from 1 to about 20 carbon atoms , and typically from 1 to 12 carbons or , in some embodiments , from { TAIL ~ 1 to 8 carbon atoms }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL