Polyester resin, electrostatic charge image developing toner, and toner container

摘要

A polyester resin is a polymer of a carboxylic acid component and an alcohol component including a rosin diol represented by the formula (1), wherein an acid value is from 10 mg KOH/g to 30 mg KOH/g, a content of carboxylic acid having a rosin skeleton in the resin is 1% by weight or less, and a content of carboxylic acid except carboxylic acid having the rosin skeleton in the resin is 1% by weight or less:;
wherein, R1 and R2 each independently represent hydrogen or a methyl group, L1, L2 and L3 each independently represent a divalent linking group selected from the group consisting of a carbonyl group, a carboxyl group, an ether group, a sulphonyl group, a chain alkylene group, a cyclic alkylene group, an arylene group, and combinations thereof, and A1 and A2 represent a rosin ester group.

主权项

1. A polyester resin that is a polymer of a carboxylic acid component and an alcohol component including a rosin diol represented by the following formula (1),
wherein an acid value is from 10 mg KOH/g to 30 mg KOH/g, a content of carboxylic acid having a rosin skeleton in the resin is 1% by weight or less, and a content of carboxylic acid except carboxylic acid having the rosin skeleton in the resin is 1% by weight or less: wherein in the formula (1),
R1 and R2 each independently represent hydrogen or a methyl group;L1, L2 and L3 each independently represent a divalent linking group selected from the group consisting of a carbonyl group, a carboxyl group, an ether group, a sulphonyl group, a chain alkylene group that may have a substituent, a cyclic alkylene group that may have a substituent, an arylene group that may have a substituent, and combinations thereof, and L1 and L2 or L1 and L3 may form a ring; andA1 and A2 represent a rosin ester group.