Section 524.2-1112 - DISCLAIMER BY APPOINTEE, OBJECT, OR TAKER IN DEFAULT OF EXERCISE OF POWER OF APPOINTMENT(a) A disclaimer of an interest in property by an appointee of a power of appointment takes effect as of the time the instrument by which the holder exercises the power becomes irrevocable.(b) A disclaimer of an interest in property by an object, or taker in default of an exercise of a power of appointment, takes effect as of the time the instrument creating the power becomes irrevocable.