It is understood that in addition to the required number of RC components wherein Z is H or M, there can be, and most preferably are, additional RC components wherein Z is a group other than H or M. [0103] These polymers can for example be obtained by use of processes as described in co-pending application PCT/US98/19139 and PCT/US98/19142. [0104] Particularly preferred anti-resoiling polymers are