An object of the present invention is to provide a novel silane coupling agent. A following formula (1): [Chemical formula 1] (wherein, R1, R2 and R3 each independently represent an alkyl group having a carbon number of 1 to 5, R4 and R5 carbon atoms 1 are each independently or an alkyl group of 5, n and p each independently represents an integer of 1 to 5, q comprises a silyl alkyl phosphoramidate hindered compounds represented by the representative.) an integer of 1 to 3, the compound silane coupling agent composition. .FIELD 1【課題】新規なシランカップリング剤を提供する。【解決手段】下記式(1):【化1】(式中、R1、R2及びR3はそれぞれ独立に炭素原子数1乃至5のアルキル基を表し、R4及びR5はそれぞれ独立に炭素原子数1乃至5のアルキル基を表し、n及びpはそれぞれ独立に1乃至5の整数を表し、qは1乃至3の整数を表す。)で表されるシリルアルキルホスホラミダード化合物と、当該化合物を含むシランカップリング剤組成物。【選択図】図1
