[Topic] until recently known poly ether denaturation silicone and comparing in silicone alternate copolymer, the new organopolysiloxane copolymer which possesses the surface active talent where it is superior in blendinging stability to the cosmetics, and improvement property of feel it can use combining with the wide cosmetics blendinging component, at the same time is superior is offered.The organopolysiloxane copolymer and its production manner of the AB die which [settlement means] possesses shiriruarukiru which possesses karuboshirokisandendorima structure in the one end of the numerator chain, possesses the hydrophilic segment in other end. The surface active agent and include the powder body treatment agent and particular organopolysiloxane copolymer the external use agent composition and the cosmetics which consist of particular organopolysiloxane copolymer.[課題]従来公知のポリエーテル変性シリコーン類やシリコーン系交互共重合体に比して、化粧品への配合安定性および感触の改善特性に優れ、幅広い化粧料配合成分と組み合わせて使用することができ、かつ優れた界面活性能を有する新規なオルガノポリシロキサン共重合体を提供する。[解決手段]分子鎖の片末端にカルボシロキサンデンドリマー構造を有するシリルアルキル基を有し、他の末端に親水性セグメントを有するAB型のオルガノポリシロキサン共重合体およびその製造方法。当該オルガノポリシロキサン共重合体からなる界面活性剤及び粉体処理剤、当該オルガノポリシロキサン共重合体を含む外用剤組成物及び化粧料。
