A substantially linear polyhydroxy polyether, which is composed substantially of aromatic units and aliphatic units, the proportion of the aromatic units being {HEAD ~ 50 to 98 mole %} based on {TAIL ~ the total amount} of the aromatic units and the aliphatic units, has an intrinsic viscosity, measured at 25 DEG C. in o chlorophenol, of from 0.3 to 2 dl/g, and has a glass transition, temperature of from 30 DEG to 120 DEG C. Two processes for preparing the polyhydroxy polyether are proposed 
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A substantially linear polyhydroxy polyether , which is composed substantially of aromatic units and aliphatic units , the proportion of the aromatic units being { HEAD ~ 50 to 98 mole % } based on { TAIL ~ the total amount } of the aromatic units and the aliphatic units , has an intrinsic viscosity , measured at 25 DEG C. in o chlorophenol , of from 0.3 to 2 dl / g , and has a glass transition , temperature of from 30 DEG to 120 DEG C. Two processes for preparing the polyhydroxy polyether are proposed
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 REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH