JP2009237056A5 - - Google Patents

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JP2009237056A5
JP2009237056A5 JP2008080378A JP2008080378A JP2009237056A5 JP 2009237056 A5 JP2009237056 A5 JP 2009237056A5 JP 2008080378 A JP2008080378 A JP 2008080378A JP 2008080378 A JP2008080378 A JP 2008080378A JP 2009237056 A5 JP2009237056 A5 JP 2009237056A5
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compound
polyester resin
electrophotographic toner
resin composition
toner according
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JP2008080378A
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JP5251198B2 (en
JP2009237056A (en
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即ち、本発明は、多塩基酸（ａ１）、多価アルコール（ａ２）、モノエポキシ化合物（ａ３）、ポリエポキシ化合物（ａ４）及び複素環を含有し、且つ前記（ａ１）〜（ａ４）からなる群から選ばれる１種類以上の化合物と反応しうる官能基を有する化合物（ａ５）とを反応して得られるポリエステル樹脂を含有することを特徴とする電子写真トナー用ポリエステル樹脂組成物を提供するものである。 That is, the present invention, polybasic acid (a1), a polyhydric alcohol (a2), monoepoxy compound (a3), polyepoxy compound (a4) and containing heterocyclic ring, and from the (a1) ~ (a4) Provided is a polyester resin composition for an electrophotographic toner comprising a polyester resin obtained by reacting a compound (a5) having a functional group capable of reacting with at least one compound selected from the group consisting of Is.

本発明で用いるポリエステル樹脂は多塩基酸（ａ１）、多価アルコール（ａ２）、モノエポキシ化合物（ａ３）、ポリエポキシ化合物（ａ４）及び複素環を含有し、且つ前記（ａ１）〜（ａ４）からなる群から選ばれる１種類以上の化合物と反応しうる官能基を有する化合物（ａ５）とを反応して得られる。前記多塩基酸（ａ１）としては、例えば、該多塩基酸の酸無水物及びこれらの低級アルキルエステルも多塩基酸として使用することができる。多塩基酸（ａ１）としては、例えば、飽和多塩基酸や不飽和多塩基酸等が挙げられる。 The polyester resin used in the present invention contains a polybasic acid (a1), a polyhydric alcohol (a2), a monoepoxy compound (a3), a polyepoxy compound (a4) and a heterocyclic ring, and the above (a1) to (a4). It is obtained by reacting a compound (a5) having a functional group capable of reacting with one or more kinds of compounds selected from the group consisting of: As said polybasic acid (a1), the acid anhydride of this polybasic acid and these lower alkyl esters can also be used as a polybasic acid, for example. Examples of the polybasic acid (a1) include saturated polybasic acids and unsaturated polybasic acids.

本発明で用いる化合物（ａ５）は、複素環を含有し、且つ前記多塩基酸（ａ１）、多価アルコール（ａ２）、モノエポキシ化合物（ａ３）、ポリエポキシ化合物（ａ４）からなる群から選ばれる１種類以上の化合物と反応しうる官能基を有する。この複素環構造を有する化合物をポリエステル樹脂の原料として用いることで、電子写真トナーにおいてチャージした電子が放出されず分子内で保持されることにより帯電安定性が向上するものと本発明の発明者らは考えている。 The compound (a5) used in the present invention contains a heterocyclic ring and is selected from the group consisting of the polybasic acid (a1), the polyhydric alcohol (a2), the monoepoxy compound (a3), and the polyepoxy compound (a4). It has a functional group capable of reacting with one or more kinds of compounds. By using the compound having this heterocyclic structure as a raw material of the polyester resin, the charged stability is improved by the fact that the charged electrons in the electrophotographic toner are not released but held in the molecule. Is thinking.

Claims (10)

多塩基酸（ａ１）、多価アルコール（ａ２）、モノエポキシ化合物（ａ３）、ポリエポキシ化合物（ａ４）及び複素環を含有し、且つ前記（ａ１）〜（ａ４）からなる群から選ばれる１種類以上の化合物と反応しうる官能基を有する化合物（ａ５）とを反応して得られるポリエステル樹脂（Ａ）を含有することを特徴とする電子写真トナー用ポリエステル樹脂組成物。 1 which is selected from the group consisting of polybasic acid (a1), polyhydric alcohol (a2), monoepoxy compound (a3), polyepoxy compound (a4) and heterocyclic ring, and consisting of the above (a1) to (a4) A polyester resin composition for an electrophotographic toner, comprising a polyester resin (A) obtained by reacting a compound (a5) having a functional group capable of reacting with at least one kind of compound. 前記化合物（ａ５）がイソシアヌル酸系化合物である請求項１記載の電子写真トナー用ポリエステル樹脂組成物。 The polyester resin composition for electrophotographic toner according to claim 1, wherein the compound (a5) is an isocyanuric acid compound. 前記化合物（ａ５）がトリアジン環を有する化合物である請求項１記載の電子写真トナー用ポリエステル樹脂組成物。 2. The polyester resin composition for electrophotographic toner according to claim 1, wherein the compound (a5) is a compound having a triazine ring. 前記ポリエポキシ化合物（ａ４）がノボラック型エポキシ樹脂である請求項１記載の電子写真トナー用ポリエステル樹脂組成物。 2. The polyester resin composition for electrophotographic toner according to claim 1, wherein the polyepoxy compound (a4) is a novolac type epoxy resin. 前記ポリエポキシ化合物（ａ４）がクレゾールノボラック型エポキシ樹脂で、且つ、複素環を含有し、且つ前記（ａ１）〜（ａ４）からなる群から選ばれる１種類以上の化合物と反応しうる官能基を有する化合物（ａ５）がトリスヒドロキシエチルイソシアヌル酸である請求項１記載の電子写真トナー用ポリエステル樹脂組成物。 The polyepoxy compound (a4) is a cresol novolak type epoxy resin, contains a heterocyclic ring, and has a functional group capable of reacting with one or more kinds of compounds selected from the group consisting of (a1) to (a4). The polyester resin composition for electrophotographic toner according to claim 1, wherein the compound (a5) is trishydroxyethyl isocyanuric acid. 前記ポリエポキシ化合物（ａ４）がクレゾールノボラック型エポキシ樹脂で、且つ、複素環を含有し、且つ前記（ａ１）〜（ａ４）からなる群から選ばれる１種類以上の化合物と反応しうる官能基を有する化合物（ａ５）がトリスヒドロキシエチルトリアジンである請求項１記載の電子写真トナー用ポリエステル樹脂組成物。 The polyepoxy compound (a4) is a cresol novolak type epoxy resin, contains a heterocyclic ring, and has a functional group capable of reacting with one or more kinds of compounds selected from the group consisting of (a1) to (a4). The polyester resin composition for electrophotographic toner according to claim 1, wherein the compound (a5) is trishydroxyethyltriazine. 前記複素環を含有し、且つ前記（ａ１）〜（ａ４）からなる群から選ばれる１種類以上の化合物と反応しうる官能基を有する化合物（ａ５）の使用量が、前記（ａ１）〜（ａ５）の合計１００重量部に対して０．５〜５．０重量部である請求項１記載の電子写真トナー用ポリエステル樹脂組成物。 The amount of the compound (a5) containing the heterocyclic ring and having a functional group capable of reacting with one or more kinds of compounds selected from the group consisting of the above (a1) to (a4) is the above (a1) to ( The polyester resin composition for electrophotographic toner according to claim 1, wherein the amount is 0.5 to 5.0 parts by weight based on 100 parts by weight of the total of a5). 前記ポリエステル樹脂（Ａ）の重量平均分子量（Ｍｗ）と数平均分子量（Ｍｎ）の比〔（Ｍｗ）／（Ｍｎ）〕が５〜７０である請求項１記載の電子写真トナー用ポリエステル樹脂組成物。 The polyester resin composition for electrophotographic toner according to claim 1, wherein the ratio ((Mw) / (Mn)) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of the polyester resin (A) is 5 to 70. . 前記ポリエステル樹脂（Ａ）の重量平均分子量（Ｍｗ）が４００００〜５０００００である請求項１〜４のいずれか１項記載の電子写真トナー用ポリエステル樹脂組成物。 The polyester resin composition for electrophotographic toner according to any one of claims 1 to 4, wherein the polyester resin (A) has a weight average molecular weight (Mw) of 40,000 to 500,000. 請求項１〜７のいずれか１項記載の電子写真トナー用ポリエステル樹脂組成物を含有することを特徴とする電子写真トナー。 An electrophotographic toner comprising the polyester resin composition for an electrophotographic toner according to claim 1.
JP2008080378A 2008-03-26 2008-03-26 Polyester resin composition for electrophotographic toner and electrophotographic toner Expired - Fee Related JP5251198B2 (en)

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JP2008080378A JP5251198B2 (en) 2008-03-26 2008-03-26 Polyester resin composition for electrophotographic toner and electrophotographic toner

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JP2009237056A JP2009237056A (en) 2009-10-15
JP2009237056A5 true JP2009237056A5 (en) 2011-03-03
JP5251198B2 JP5251198B2 (en) 2013-07-31

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009265580A (en) * 2008-04-30 2009-11-12 Dic Corp Polyester resin composition for electrophotographic toner, and electrophotographic toner
JP5526709B2 (en) * 2009-10-29 2014-06-18 Ｄｉｃ株式会社 Polyester resin composition for electrophotographic toner and electrophotographic toner
JP5440858B2 (en) * 2010-03-09 2014-03-12 Ｄｉｃ株式会社 Polyester resin composition for electrophotographic toner and electrophotographic toner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63174064A (en) * 1987-01-14 1988-07-18 Dainippon Ink & Chem Inc Toner for developing electrostatic charge image
JPH04303848A (en) * 1991-03-29 1992-10-27 Nippon Synthetic Chem Ind Co Ltd:The Binder for toner
JP3207558B2 (en) * 1992-09-28 2001-09-10 三洋化成工業株式会社 Toner binder and toner composition
JP4300440B2 (en) * 1998-12-24 2009-07-22 Ｄｉｃ株式会社 Non-magnetic one-component developing toner
JP4273600B2 (en) * 1998-12-24 2009-06-03 Ｄｉｃ株式会社 Toner for electrophotography
JP4581312B2 (en) * 2001-09-28 2010-11-17 Ｄｉｃ株式会社 Toner for electrophotography
JP2006010940A (en) * 2004-06-24 2006-01-12 Dainippon Ink & Chem Inc Resin composition for electrophotographic toner and method for manufacturing electrophotographic toner

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