| 摘要 |
Normally liquid polyfunctional final Mannich condensates that are useful as curing agents for epoxy resins are prepared by reacting a para C1-C15 alkyl phenol with formaldehyde and a first polyoxyalkylene diamine to form an intermediate Mannich condensate that is reacted, in turn, with formaldehyde and a second polyoxyalkylene diamine to form the final Mannich condensate, the first polyoxyalkylene diamine having the formula: <IMAGE> (V) wherein: n represents a positive number having a value of 1 to about 6, and R' independently represents hydrogen or a methyl group, the second polyoxyalkylene diamine having the formula: <IMAGE> (VII) wherein n and n' represent positive numbers having a value of 1 to about 6, R' independently represents hydrogen or a methyl group, and R''' represents an alkyl group containing 1 to 4 carbon atoms or a cyanoethyl group.
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