A sealing agent for the semiconductor light emitting device, a semiconductor light emitting device

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PROBLEM TO BE SOLVED : To provide a sealing agent for a semiconductor light-emitting device excellent in transparency, heat resistance, gas barrier properties and adhesiveness with a package which are required in applications for a semiconductor light-emitting device and to provide a sealing agent of a semiconductor light-emitting device using the same and a semiconductor light-emitting device.SOLUTION : There is provided a sealing agent for a semiconductor light-emitting device containing an isocyanurate compound and a disulfide compound containing a disulfide group and an alkoxysilyl group, represented by the following formula (1), wherein R, Rand Rare a substituent provided that at least one of Rto Rcontains an acryloyloxy group.