PROBLEM TO BE SOLVED: To provide novel polyglycerol monoether, and a detergent composition that comprises the polyglycerol monoether, has excellent foaming power, has a low stimulus and is friendly for the skin, and suitable for cleaning the skin or hair.SOLUTION: A polyglycerol monoether is a compound represented by the following formula (2) RO-(C3H6O2) n2-H (where R is a C10-C18 linear or branched aliphatic hydrocarbon group which may have a hydroxyl group. n2 is a degree of polymerization of a glycerol unit to represent 11-40), obtained by the ring opening polymerization of glycidol, using as an initiator polyglycerol monoether (1) represented by the following formula (1) RO-(C3H6O2) n1-H (where R is as described above. n1 is a degree of polymerization of a glycerol unit to represent 4-10).SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】新規のポリグリセリンモノエーテル、及び前記ポリグリセリンモノエーテルを含有し、起泡力に優れ、且つ低刺激性で肌に優しく、皮膚や頭髪の洗浄用として好適な洗浄剤組成物を提供する。【解決手段】本発明のポリグリセリンモノエーテルは、下記式(1) RO-(C3H6O2)n1-H (1)(式中、Rはヒドロキシル基を有していてもよい炭素数10~18の直鎖状又は分岐鎖状脂肪族炭化水素基を示す。n1はグリセリン単位の重合度を示し、4~10である)で表されるポリグリセリンモノエーテル(1)を開始剤として、グリシドールを開環重合させて得られる、下記式(2) RO-(C3H6O2)n2-H (2)(式中、Rは前記に同じ。n2はグリセリン単位の重合度を示し、11~40である)で表される化合物である。【選択図】なし
