| 摘要 |
<p>Polyepoxides are cured by ditertiary amines of the formula <FORM:1091369/C3/1> where A is a C1- 6 alkylene radical, R is a C1- 6 alkyl radical and R1 is H or R. The curing may be in the presence of a known curing agent for epoxy resins. A precondensate curable at 130-220 DEG C. may be formed at 50-130 DEG C. The known curing agents may be BF3 complexes, other amines, acid anhydrides, phenols, alcohols, titanates or triaryl phosphites. Also present may be fillers, pigments, dyestuffs, flame inhibitors, mould lubricants and extenders. The curable mixtures are useful in many of the fields conventional for epoxy resins.ALSO:Iron sheets are coated by preheating to 180 DEG C and immersing in a fluidized bed of, or by electrostatic spraying with followed by curing at 180 DEG C, a precondensate prepared by heating a mixture of 2 solid epoxy resins, a diglycidyl ether of polypropylene glycol, TiO2, finely dispersed silica, boron trifluoride-ethylamine complex, and bis (4-dimethylaminocyclohexyl)-methane.</p> |
