| 摘要 |
FIELD: anti-corrosion water-protective coatings for metal objects and various-purpose constructions. SUBSTANCE: epoxide powder composition includes solid epoxide resin, hardener, accelerator, filler (30-100 wt parts), and technical additives: polyvinylbutyral (1.0-5.5 wt parts) and pouring agent (0.5-1.5 wt parts). Solid epoxide resin is a mixture of (in wt parts) condensation product of epoxydiane resin having mol.weight 400-600 with distillation residue of phthalic anhydride, 100; solid epoxynovolacs, 10-40; and solid epoxydiane resin having mol.weight 1400-2000, 0-74. The hardener is adduct of epoxydiane resin having mol.weight 400-1200 with diphenylolpropane, 20-80; and accelerator is zinc alkyl-or alkylarylimidazol-N,N'- bis(salicylidene)-1,2-phenylenediiminate, 0.3-4.0. Solid epoxynovolacs are epoxyphenolformaldehyde, epoxycresolformaldehyde novolacs with mol.weight 800-1200 or condensation product of epoxyphenolformaldehyde novolac having mol. weight 500-700 with diphenylolpropane. EFFECT: improved performance. 3 cl, 5 tbl |
