| abstract |
Provided is an organopolysiloxane in which two carboxyl groups are bonded to one silicon atom, the reactivity of the carboxyl group is high, and the affinity with an oil agent is high. An organopolysiloxane represented by the following average composition formula (1): Here, R 2 is a group represented by the following formula (2), and when c is 0, R 2 is bonded to at least one terminal of the organopolysiloxane, R 3 is a group represented by the following formula (3), a is a number from 1.5 to 2.5, b is a number from 0.001 to 1.5, and c is a number from 0 to 1.5. [Selection figure] None |