R6## wherein R2 is a hydrogen atom or a lower alkyl group, R3 is a lower alkyl group, n is an integer from about 20 to about 500, and R4 is a monovalent radical selected from the group consisting of: ##STR7## wherein R5 is a hydrogen atom or a lower alkyl group and R6 is a lower alkyl group; wherein the number and composition of said C macromers is such that the adhesive composition has a creep co