| 摘要 |
<p>A method for obtaining a positive bond between articles painted or coated with thermosets and concrete, involves treatment of the surface with an epoxy resin-cement mortar mixture containing an epoxy resin emulsion of the composition (a) a liquid epoxy resin; (b) water; (c) an emulsifier comprising a primary, aliphatic alcohol, an adduct thereof with ethylene oxide or, optionally, a polyglycol ester of a carboxylic acid; and (d) a latent curing agent comprising a reaction product of the essentially complete neutralization of a diamine of the formulae H2N-CH2-R-NH2 or H2N-R-CH2-R-NH2 with oxyalic acid, wherein R is alkyl substituted alkylene or cycloalkylene; or the reaction product obtained by complete neutralization with oxalic acid of (i) a polyamine of the formula H2N-CH2-CH2-NH-xH wherein x=2, 3, or 4, or of (ii) a reaction product, containing amino groups, of such a polyamine with a fatty acid.</p> |
