EPOXIDIZED LOW-MOLECULAR-WEIGHT ETHYLENE POLYMER, MOLD-RELEASING AGENT FOR ELECTROPHOTOGRAPHIC TONER, AND ELECTROPHOTOGRAPHIC TONER FOR DEVELOPING ELECTROSTATIC IMAGE
申请人:Mitsui Chemicals, Inc.
公开号:EP1707579A1
公开(公告)日:2006-10-04
[PROBLEMS] The present invention provides a modifier for an electrophotographic toner which is excellent in adhesiveness with various inks, coating materials, aluminum or other metals, or the like, a release agent of the electrophotographic toner, and a modified electrophotographic toner.
[MEANS FOR SOLVING PROBLEMS] A release agent for an electrophotographic toner, which comprises an epoxidized low-molecular-weight ethylene polymer (B) which contains an epoxy group in the polymer chain of a low-molecular-weight ethylene polymer (A), and has (i) a density of 870 to 1,050 kg/m3, (ii) a melting point of 70 to 130°C, and (iii) a number-average molecular weight (Mn) of 400 to 5,000, and a modified low-molecular-weight ethylene compound (C) obtained from the epoxidized low-molecular-weight ethylene polymer (B) and a carboxylic acid compound; and an electrophotographic toner for developing an electrostatic charge image, which comprises the modified low-molecular-weight ethylene compound (C).
[问题]本发明提供了一种与各种油墨、涂层材料、铝或其他金属等粘合性极佳的电子照相调色剂的改性剂,一种电子照相调色剂的脱模剂,以及一种改性电子照相调色剂。
[解决问题的方法] 一种用于电子照相调色剂的脱模剂,它包括环氧化低分子量乙烯聚合物 (B),该聚合物在低分子量乙烯聚合物 (A) 的聚合物链中含有环氧基团,并且 (i) 密度为 870 至 1、050 kg/m3,(ii) 熔点为 70 至 130°C,(iii) 数均分子量 (Mn) 为 400 至 5000,以及由环氧化低分子量乙烯聚合物 (B) 和羧酸化合物制得的改性低分子量乙烯化合物 (C);以及用于显影静电荷图像的电子照相调色剂,其中包含改性低分子量乙烯化合物 (C)。