发明名称 Electrostatic image developing toner
摘要 Urethane-modified polyester resin which has a total acid value not greater than 10 KOH mg/g and is obtained by kneading, in a molten state, a base polyester resin (A) having an acid value of 5 to 20 KOH mg/g and a hydroxyl value of 40 to 70 KOH mg/g, a low-molecular-weight polyester resin (B) having an acid value not greater than 5 KOH mg/g, a hydroxyl value not greater than 10 KOH mg/g and a weight-average molecular weight of 3,000 to 5,000 and a polyisocyanate compound, wherein components (A) and (B) are at a weight ratio of 3 to 5:7 to 5 and the polyisocyanate compound is in an amount of 0.2 to 1.2 equivalent, in terms of an isocyanate group per equivalent, of the total hydroxyl groups of all the resins.
申请公布号 US6395843(B2) 申请公布日期 2002.05.28
申请号 US20010897029 申请日期 2001.07.03
申请人 MITSUI CHEMICALS, INC. 发明人 MAEKAWA HIROSHI;HISAMATSU KAZUO;EMURA YUJI;OGAWA KOICHI;MIZUSHIMA KATSUHIKO
分类号 C08G18/08;C08G18/42;G03G9/087;(IPC1-7):C08G18/42;C08L75/06 主分类号 C08G18/08
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