Illustrative, preferred examples of B include ???(CH2)m??? wherein m is an integer of 1 to 20, ???(CH2)2???CH(OH)???CH2???, ???CH2???CH(OH)???CH2???, ???CH2???CH???CH???CH2???, ???CH2???CH(CH???CH2)???, ???(CH2???CH2???O)2???(CH2)2???, ???CH2???(CO)???CH2???, and ???CH2???C6H4???CH2???,