TONER BINDER
To provide a toner binder which is used for a toner which, while maintaining the balance between low temperature fixability and heat-resistant storage stability, excels in separability from a fixing roller.SOLUTION: Provided is a toner binder that contains an amorphous vinyl resin (A) and a crystall...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a toner binder which is used for a toner which, while maintaining the balance between low temperature fixability and heat-resistant storage stability, excels in separability from a fixing roller.SOLUTION: Provided is a toner binder that contains an amorphous vinyl resin (A) and a crystalline vinyl resin (B), the amorphous vinyl resin (A) being the polymer of a monomer composition (A0) that contains a monomer (a), the monomer (a) being a monomer having a nitrile group, the crystalline vinyl resin (B) being the polymer of a monomer composition (B0) that contains a monomer (b), a monomer (c) an a monomer (d), the monomer (b) being a 21-40C (meth)acrylate which has a linear hydrocarbon group, the monomer (c) being a monomer that has a nitrile group, the monomer (d) being a monomer that has a vinyl group and an ether group and/or a monitor that has a vinyl group and a hydroxy group.SELECTED DRAWING: None
【課題】低温定着性及び耐熱保存性のバランスを維持しつつ、定着ローラーからの分離性に優れたトナーに用いるトナーバインダーを提供する。【解決手段】非晶性ビニル樹脂（Ａ）及び結晶性ビニル樹脂（Ｂ）を含有するトナーバインダーであって、非晶性ビニル樹脂（Ａ）が単量体（ａ）を含む単量体組成物（Ａ０）の重合体であり、単量体（ａ）がニトリル基を有する単量体であり、結晶性ビニル樹脂（Ｂ）が単量体（ｂ）、単量体（ｃ）及び単量体（ｄ）を含む単量体組成物（Ｂ０）の重合体であり、単量体（ｂ）が鎖状炭化水素基を有する炭素数２１～４０の（メタ）アクリレートであり、単量体（ｃ）がニトリル基を有する単量体であり、単量体（ｄ）がビニル基とエーテル基を有する単量体及び／又はビニル基と水酸基を有する単量体であるトナーバインダー。【選択図】 なし |
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