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Mannich adducts are, as curing agents for aqueous epoxy resin compositions with a rapidly curing for an application in fresh concrete
Mannich adducts are, as curing agents for aqueous epoxy resin compositions with a rapidly curing for an application in fresh concrete
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机译:曼尼希加合物作为水性环氧树脂组合物的固化剂,可快速固化,用于新拌混凝土中
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摘要
A water-soluble composition including a water soluble polyamine adduct which is a reaction product of: (a) an alkoxy group modified polyepoxide resin containing an average of at least 1.5 epoxide groups per molecule; and (b) a Mannich base polyamine. The Mannich base polyamine is a reaction product of a polyamine containing at least two amino groups with a N-Mannich condensate prepared from a reaction of a phenolic compound, an aldehyde, and a secondary amine wherein the secondary amine of the N-Mannich condensate is replaced by one of the at least two amino groups of the polyamine, and wherein the ratio of the Mannich base polyamine to the alkoxy group modified polyepoxide resin contains an excess of an active amine hydrogen relative to epoxide groups so that the water soluble polyamine adduct has an amine hydrogen equivalent weight of at most 1000 based on solids content.
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