A curing agent for epoxy resin which comprises at least one selected from the compound of the formula (1) and its salt, as an effective component
 wherein X is -(CH2)n- or -(CH2)1-Y-(CH2)m- , Y is -N(R1)-, -O- or -S- , R1 is alkyl having 1 to 8 carbon atoms or amino. n is a number of 2, 3, 5 to 11, 1 and m are each a number of 1 to 8.
                            一种环氧
树脂固化剂,它包括至少一种选自式(1)化合物及其盐的有效成分
 其中 X 为-(
CH2)n-或-(   )1-Y-(   )m-,Y 为-N(R1)-、-O-或-S-,R1 为具有 1 至 8 个碳原子的烷基或
氨基,n 为 2、3、5 至 11 的数目,1 和 m 各为 1 至 8 的数目。