| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to an epoxy resin-based composition. The composition includes epoxy resin, a polyol and a carboxamide compound, where the carboxamide compound has the formula NH-CO-R, where R is 1) -NRR, 2) an alkyl having 1-10 carbon atoms and optionally including 1-3 hydroxyl and/or ether groups 3) phenyl or 4) tolyl, where Rand Rare independently selected from a hydrogen atom, hydroxy, phenyl, tolyl and alkyl, having 1-6 carbon atoms and optionally including a hydroxy- and/or ether group, and a mixture of said compounds, and where the number of hydroxyl equivalents per epoxide equivalent is 0.02-100 and preferably 0.03-50 and most preferably 0.05-10, and the number of carboxamide equivalents per epoxide equivalent is 0.0005-1 and preferably 0.005-0.7 and most preferably 0.01-0.5. A curable composition for producing a polyurethane-polyisocyanate material, which can be obtained by combining and mixing said epoxy resin-based composition and an aromatic polyisocyanate-based composition, which includes a polyisocyanate, lithium halide and urea compound, where the number of lithium halide moles per isocyanate equivalent is in the range of 0.0001-0.04, and the number of urea equivalents + biuret per isocyanate equivalent is in the range of 0.0001-0.4. The invention also relates to use of said carboxyamide compound to prolong the shelf life of the curable polyisocyanate-based composition.EFFECT: obtaining an epoxy resin-based composition for producing a curable composition which includes polyisocyanate.15 cl, 4 tbl |
