| 主权项 |
1. A cellulose resin comprising a moiety of cellulose or a derivative thereof, a moiety of cardanol or a derivative thereof and a moiety of abietic acid or a derivative thereof,
wherein the moiety of cardanol or a derivative thereof is linked to the moiety of cellulose or a derivative thereof via an organic linking group, a cellulose carbon atom to which a cellulose hydroxy group is bound and a cardanol carbon atom to which a phenolic hydroxy group of the cardanol or a derivative thereof is bound are linked via the organic linking group, the organic linking group comprises a first bond binding to the cellulose carbon atom wherein the first bond is an ester bond, and ether bond, or a urethane bond, and a second bond binding to the cardanol carbon atom wherein the second bond is an ester bond, an ether bond, or a urethane bond, wherein, when the first bond is an ester bond or a urethane bond, then the second bond is an ester bond, an ether bond, or a urethane bond, wherein, when the first bond is an ether bond, then the second bond is an ester bond or a urethane bond, at least one acyl group selected from a group consisting of an acetyl group, a propionyl group and a butyryl group is added to a cellulose hydroxy group of the cellulose or a derivative thereof, wherein a cellulose carbon atom to which a hydroxy group of the cellulose or a derivative thereof is bound, and an abietic acid carbon atom to which a carboxyl group of the abietic acid or a derivative thereof is bound are linked at least via a bond derived from the carboxyl group, and wherein the derivative of the abietic acid is a hydrogenated abietic acid obtained by hydrogenating an unsaturated bond of the abietic acid. |
