. "Examples of starting components include alcohols such as ethylene glycol, propylene glycol-(1,3) or -(1,2), or 4,4'-dihydroxydiphenylpropane, amines such as aniline or water.Polyethers modified by vinyl polymers, for example the compounds obtained by the polymerization of styrene or acrylonitrile in the presence of polyethers (U.S. Pat. Nos. 3,383,351; 3,304,273; 3,523,093; and 3,110,695 and Germa" . . . .