- Cure-accelerator for epoxy resin
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A cure-accelerator for an epoxy resin, which comprises a compound of the formula (I), wherein R1, R2, R3 and R4 are C1 -C3 lower alkyl groups which may be the same or different, and Ar is a substituted tolylene group of the formula (II) STR1 wherein R5 and R6 are C1 -C4 lower alkyl groups which may be the same or different) or a 1,5-naphthylene group.
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