ately in each occurrence a hydrocarbon radical selected from the group consisting of alkyleneoxy, aralkyleneoxy and cycloalkyleneoxy; X is O, S or NH; m is an integer of 1 to 40; n is separately in each occurrence an integer of from 1 to 25; p is an integer of 1 or greater; s is separately in each occurrence an integer of 1 to 10; x is 1; y is separately in each occurrence 1 to 40; and z is separa