The alkyl group may have 1 to 50 carbon atoms (whenever it appears herein, a numerical range such as ???1 to 50??? refers to each integer in the given range; e.g., ???1 to 50 carbon atoms??? means that the alkyl group may consist of 1 carbon atom, 2 carbon atoms, 3 carbon atoms, etc., up to and including 50 carbon atoms, although the present definition also covers the occurrence of the term ???alk