Polyurethane resin, toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

A toner for developing an electrostatic charge image comprising a polyurethane resin which is an addition polymer, the polyurethane resin comprising:

• an isocyanate compound containing at least a compound having two or more isocyanate groups;
• and
• an alcohol compound containing rosin diol represented by Formula (1):
• wherein in Formula (1):
• R1 and R2 represent a hydrogen atom or a methyl group,
• L1, L2, and L3 each independently represent a member selected from the group consisting of a carbonyl group, an ester group, an ether group, a sulfonyl group, a chain alkylene group which may have a substituent, a cyclic alkylene group which may have a substituent, an arylene group which may have a substituent, and a divalent linking group selected from a group consisting of combinations of the above-described groups, wherein L1 and L2 or L1 and L3 may form a ring together, and
• A1 and A2 represent a rosin ester group.