In another embodiment, each R is independently selected from linear C1 to C4 alkyl groups, substituted linear C1 to C4 alkyl groups, branched C3 to C4 alkyl groups, or substituted branched C3 to C4 alkyl groups, where the substituents of such groups are as noted above.In general the crosslinkable and/or polymerizable block copolymer compositions of the present invention can be generically represen