A process 1 wherein the at least one aromatic monocarboxyclic acid of is selected from the group consisting of: ##STR19## where L is a direct link, O , S , or ##STR20## where p is 1 or 2, q is 1 or 2, r is 0 or 1, R is a direct link, O , or S , R is a direct link, O , S , CO , SO2 , or C2 , and {HEAD ~ Q} is {TAIL ~ CO} , SO2 or C2 
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A process 1 wherein the at least one aromatic monocarboxyclic acid of is selected from the group consisting of : # # STR19 # # where L is a direct link , O , S , or # # STR20 # # where p is 1 or 2 , q is 1 or 2 , r is 0 or 1 , R is a direct link , O , or S , R is a direct link , O , S , CO , SO2 , or C2 , and { HEAD ~ Q } is { TAIL ~ CO } , SO2 or C2
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