| abstract |
Provided are a novel vinylene group-containing organopolysiloxane compound, particularly a terminal vinylene group-containing organopolysiloxane compound, which can be applied as a base polymer of an addition-curable silicone composition, and a method for producing the same. An organopolysiloxane compound having at least one unit represented by the following formula (1) as a partial structure and being linear or branched. [R 1 is independently a hydrogen atom or a monovalent hydrocarbon group having 1 to 20 carbon atoms, R 2 is independently a hydrogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, or the following formula (a) X is an integer of 0 to 1,998, R 3 is independently a group represented by the above formula (a), R 4 is independently a monovalent hydrocarbon group having 1 to 20 carbon atoms, a is 1 An integer of ˜2,000, b is an integer of 0 to 1,999. ] |