| prov:value
| - presence of BF3, or by addition reaction of these epoxides, optionally mixed with one another or used successively, with starting components with reactive hydrogen atoms, such as alcohols or amines, for example water, ethylene glycol, 1,3- or 1,2-propylene glycol, trimethylolpropane, 4,4'-dihydroxydiphenylpropane, aniline, ammonia, ethanolamine or ethylenediamine.
|