rbon atoms, m has a value of from 2 to 4, n has a value of from 1 to 6, v is 0 or 1, w has a value of from 1 to 3, x has a value of from 2 to 6, y has a value of from 0 to 3, each A radical is selected from the group consisting of R-- and halohydrocarbon radicals of from 1 to 6 inclusive carbon atoms, each Z radical is A-- or QR--, each R is a divalent alkylene radical of from 1 to 6 inclusive c