The X group may be one of the following illustrative moieties; 1,3-dioxane; 1,3-dioxolane; a 5-, 6-, 7-, or 8- numbered lactam (e.g., butyrolactam, caprolactam, etc); morpholine; --COOH; --OH; cycloalkylene carbonate; --COOR'; --(OCH2 CH2)n --OH; ##STR2## acetals ##STR3## and hemicetals ##STR4## and wherein R' is a lower alkyl or an unsaturated lower alkyl (e.g. C1 to C3) and n is an integer from