JW Wulff, M Hulett, S Lee - US Patent 6,076,487, 2000 - Google Patents
4,279,619 7/1981 TsuZuki et a1,,, 44/56 Weight esters such as from the group comprising
methyl 4,333,739 6/1982 Neves............................. 44/308 formate, methyl acetate, ethyl …