| 摘要 |
A method for making a polyaspartic ester mixture in-situ comprising the sequential steps of (a) reacting a polypropy-lene oxide amine with an excess amount of an ester of fumaric or maleic acid to form a mixture containing first polyaspartic ester component and excess unreacted ester of fumaric or maleic acid, and (b) addi ng an acyclic amine to the mixture resulting from step (a) and reacting the acyclic amine with the excess ester of fumaric or malei c acid to form a second polyaspartic ester component.
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