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公开(公告)号：US20200264528A1
公开(公告)日：2020-08-20
申请号：US16761987
申请日：2018-11-06
发明人： Masaru HONDA , Tomohisa KATO , Yasuhiro ONO
IPC分类号： G03G9/087
摘要： The present invention relates to a toner binder containing: a polyester resin (A); and a vinyl resin (B), wherein the polyester resin (A) has an acid value of 2 mg KOH/g or more, the vinyl resin (B) has a weight average molecular weight of 4,000 to 40,000, the vinyl resin (B) is a polymer essentially containing a monomer (m) whose homopolymer has an SP value of 11.5 to 16.5 as a constituent monomer, the weight percentage of the monomer (m) in monomers constituting the vinyl resin (B) is 1 wt % or more based on the total weight of the monomers constituting the vinyl resin (B), the polyester resin (A) and the vinyl resin (B) are present at a weight ratio (A)/(B) of 80/20 to 99.5/0.5, and when the vinyl resin (B) contains polyethylene units (C11) having a degree of polymerization of 70 to 210 and/or polypropylene units (C12) having a degree of polymerization of 70 to 210, the total weight percentage of the polyethylene units (C11) and the polypropylene units (C12) in the vinyl resin (B) is 9 wt % or less based on the weight of the vinyl resin (B).
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公开(公告)号：US20180164708A1
公开(公告)日：2018-06-14
申请号：US15881017
申请日：2018-01-26
发明人： Satoshi UTSUI , Tomohisa KATO , Eiji IWAWAKI , Hiroshi ODAJIMA , Mana SANPEI , Yuko SUGIMOTO
CPC分类号： G03G9/08755 , G03G9/0819 , G03G9/08711 , G03G9/08764 , G03G9/08766 , G03G9/08795 , G03G9/08797 , G03G9/0904
摘要： The toner binder of the present invention contains a crystalline resin (A) and a resin (B) that is a polyester resin or its modified resin, the polyester resin being obtained by reaction of an alcohol component (X) and a carboxylic acid component (Y) as raw materials, wherein a temperature (Tp) of the top of an endothermic peak derived from the crystalline resin (A) as measured by a differential scanning calorimeter (DSC) is in the range of 40° C. to 100° C., and endothermic peak areas S1 and S2 during heating satisfy the following equation. (S2/S1)×100≥35 (1) S1 is an area of the endothermic peak derived from the crystalline resin (A) in the first heating process, and S2 is an area of the endothermic peak derived from the crystalline resin (A) in the second heating process, when the toner binder is heated, cooled, and heated.
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公开(公告)号：US20170184990A1
公开(公告)日：2017-06-29
申请号：US15309556
申请日：2015-05-07
发明人： Satoshi UTSUI , Tomohisa KATO , Eiji IWAWAKI , Hiroshi ODAJIMA , Mana SANPEI , Yuko SUGIMOTO
CPC分类号： G03G9/08755 , G03G9/0819 , G03G9/08711 , G03G9/08764 , G03G9/08766 , G03G9/08795 , G03G9/08797 , G03G9/0904
摘要： The toner binder of the present invention contains a crystalline resin (A) and a resin (B) that is a polyester resin or its modified resin, the polyester resin being obtained by reaction of an alcohol component (X) and a carboxylic acid component (Y) as raw materials, wherein a temperature (Tp) of the top of an endothermic peak derived from the crystalline resin (A) as measured by a differential scanning calorimeter (DSC) is in the range of 40° C. to 100° C., and endothermic peak areas S1 and S2 during heating satisfy the following equation. (S2/S1)×100≧35 (1) S1 is an area of the endothermic peak derived from the crystalline resin (A) in the first heating process, and S2 is an area of the endothermic peak derived from the crystalline resin (A) in the second heating process, when the toner binder is heated, cooled, and heated.
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