| 摘要 |
PURPOSE: A low temperature curable epoxy composition is provided to afford excellent activation temperature, good reaction heat, and high glass transition. CONSTITUTION: A urea compound is the reaction product of an isocyanate and an alkylated polyalkylenepolyamine having at least one primary or secondary amine and at least two tertiary amines of chemical formula 1, where R1, R2, R3, R4 and R5 independently represent hydrogen, methyl or ethyl; n and m independently are integers from 1 to 6 and; X is an integer from 1 to 10.
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