abstract |
PROBLEM TO BE SOLVED: To provide an organopolysiloxane which is excellent in emulsification stability and stability over time, gives a light touch, is not sticky, and can give a cosmetic with good makeup sustainability. A block type organopolysiloxane represented by the following average composition formula (1): [Chemical 1] (In the above average composition formula (1), each R 1 is independently a monovalent hydrocarbon group having 1 to 12 carbon atoms, and R 2 is a hydrogen atom or a monovalent hydrocarbon having 1 to 15 carbon atoms. Or a monovalent acyl group having 2 to 7 carbon atoms, R 3 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 4 carbon atoms, and X is a carbon number having 2 to 15 carbon atoms. Divalent hydrocarbon group, n is an integer of 1 or more, m is an integer of 1 or more, s is an integer of 0 to 100, t is an integer of 0 to 50, and z is 0 to 0 50 is an integer, and each R 4 independently represents a hydrogen atom, a hydroxyl group, an alkoxy group, or an organic group represented by the general formula (2). [Selection figure] None |