Chlorotor-mates of poly(ethenurethane) rglycols are prepared from diamines and the bischlorofor-mates of short-chain, hydroxy-terminate-d polyethers: wherein R is a straight-chain or branched-chain alkylene radical containing from 2 to 4 carbon atoms and R is selected from the group consisting of straight-chain and branched-chain alkylene radicals containing from 2 to 20 carbon atoms, phenylene an