| 摘要 |
PURPOSE:To prevent an offset and to ensure a fixing at a low temp. by incorporating a polyester resin obtd. by polycondensating a specific diol, a polycarboxylic acid or its anhydride or its lower alkylester, and a polyhydric alcohol having >=3 hydroxyl groups as a main component of a binding resin to the titled composition. CONSTITUTION:In the titled composition consisting of the binding resin and the coloring agent, the polyester resin is obtd. by polycondensating the diol component shown by formula I, the polycarboxylic acid or its anhydride or its lower alkylester, and the polyhydric alcohol having >=3 hydroxyl groups shown by formula II as the main component of the binding resin. In the predescribed formula, R is an ethylene or a propylene, (x) and (y) are each >=1, and an average of (x+y) is 2-7, R1 is a hydrogen atom or 1-20C hydrocarbon group, R2 and R3 are a methylene, an oxyethylene or an oxypropylene group, (p) is 0 or 1, (m1) and (m2) may be same or different, and are 0-7, (n1) is 1-, (n2) is 0-4, (q) is 1-6, (n1)Xq>=3. |
