| http://www.w3.org/ns/prov#value | - lly of the repeated structural unit, ##STR1## wherein X and Y separately each represent a hydroxyl radical and X and Y together represent a bivalent oxygen atom, R represents an alkyl radical of less than 5 carbon atoms, n is an integer greater than one representing the number of repeated occurences of said structural unit in a molecule of said copolymer and n is large enough to characterize said
|
