| http://www.w3.org/ns/prov#value | - wherein R3 represents the same group as mentioned above, R4 represents hydrogen atom or an organic functional group, X represents a halogen atom, and n is an integer of 0 to 3, wherein a diorganopolysiloxane modified with a silanol at its both terminals and included in the cyclic siloxane as impurities, is treated with an acetylating agent.
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