The polyhydroxy component A) according to the invention is a linear or branched compound having at least 2 hydroxyl groups in the molecule and containing from 0.1 to 20 wt %, preferably from {HEAD ~ 0.2 to 10 wt %} and particularly preferably from {TAIL ~ 0.4 to 6 wt %} of hydroxyl groups 
The polyhydroxy component A ) according to the invention is a linear or branched compound having at least 2 hydroxyl groups in the molecule and containing from 0.1 to 20 wt % , preferably from { HEAD ~ 0.2 to 10 wt % } and particularly preferably from { TAIL ~ 0.4 to 6 wt % } of hydroxyl groups
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH