JP7432487B2 - 塩基添加及び関連方法を使用して作製されたポリマー添加剤 - Google Patents
塩基添加及び関連方法を使用して作製されたポリマー添加剤 Download PDFInfo
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Description
第1のポリマー添加剤ラテックス(ポリマー添加剤ラテックスA)を5ガロンスケールで調製し、第2のポリマー添加剤ラテックス(ポリマー添加剤ラテックスB)を300ガロンスケールで調製した。両方のラテックスを、20重量%固形分で、74.2重量%シクロヘキシルメタクリレート(CHMA)、25重量%のジビニルベンゼン(DVB)、及び0.8重量%のジメチルアミノエチルメタクリレート(DMAEMA)と、直前に使用した14重量%のラウレス硫酸ナトリウム(SLS)と、を含むモノマーの混合物を反応器において使用して、乳化重合により調製した。両方のラテックスを、反応を始める開始剤として過硫酸アンモニウム(APS)を使用して77℃で反応させた。反応は、77℃で2時間継続した。反応後、両方のラテックスを、77℃で1時間、87℃まで2時間、87℃で2時間というプロトコルに従って加熱した。加熱中、0.941kgの0.4%のKOH溶液を第1のラテックスに添加し、22kgの0.4%のNaOH溶液を第2のラテックスに添加した。次いで、両方のラテックスを室温に冷却した。各ラテックスの詳細を以下の表1A及び1Bに示す。
Claims (20)
- ポリマー粒子混合物中のポリマー添加剤含有量Aを評価するための方法であって、
ポリマー粒子混合物中の金属カチオンの濃度Bを判定することであって、前記ポリマー粒子混合物が親ポリマー粒子及びポリマー添加剤粒子を含み、前記金属カチオンが、ナトリウム(Na)以外のアルカリ土類金属及びアルカリ金属から選択され、前記金属カチオンが、水溶性塩基を形成することができる、判定することと、
前記親ポリマー粒子中の前記金属カチオンの濃度Cを判定することと、
前記ポリマー添加剤粒子中の前記金属カチオンの濃度Dを判定することと、
式A=(B-C)/Dを使用して、前記ポリマー粒子混合物中のポリマー添加剤粒子のポリマー添加剤含有量Aを計算することと、を含む、方法。 - 前記ポリマー粒子混合物が、トナー高分子粒子混合物であり、前記親ポリマー粒子が、トナー親ポリマー粒子である、請求項1に記載の方法。
- 前記ポリマー粒子混合物が、3D印刷ポリマー粒子混合物であり、前記親ポリマー粒子が、3D印刷ポリマー粒子である、請求項1に記載の方法。
- 前記金属カチオンが、Li、K、Cs、Sr、及びBaから選択される、請求項1に記載の方法。
- 前記水溶性塩基が、LiOH、KOH、CsOH、Sr(OH)2、及びBa(OH)2から選択される、請求項4に記載の方法。
- 前記金属カチオンの濃度B、C、及びDを判定することが、高周波誘導結合プラズマ(ICP)又は蛍光X線分析(XRF)を使用して実施される、請求項1に記載の方法。
- 前記ポリマー添加剤粒子中の前記金属カチオンの濃度Dが、400ppm~2000ppmの範囲である、請求項1に記載の方法。
- 前記ポリマー添加剤粒子が、前記水溶性塩基で処理されたポリマー添加剤ラテックスから回収されたものである、請求項1に記載の方法。
- 前記計算されたポリマー添加剤含有量Aと目標ポリマー添加剤含有量Aとの差を計算することと、前記差を閾値と比較することと、を更に含む、請求項1に記載の方法。
- 前記閾値が、±0.05pphである、請求項9に記載の方法。
- 前記ポリマー粒子混合物中の前記金属カチオンの濃度Bと前記親ポリマー粒子中の前記金属カチオンの濃度C との間の差が、1ppm~30ppmの範囲である、請求項1に記載の方法。
- 前記金属カチオンを含む前記水溶性塩基の量の存在下で、ポリマー添加剤ラテックスをある時間にわたって加熱して、前記ポリマー添加剤粒子を含む処理済みポリマー添加剤ラテックスを形成することを更に含む、請求項1に記載の方法。
- 前記親ポリマー粒子を前記ポリマー添加剤粒子と混合して、前記ポリマー粒子混合物
を形成することを更に含む、請求項1に記載の方法。 - 親ポリマー粒子のためのポリマー添加剤組成物を形成する方法であって、
モノマーの乳化重合によりポリマー添加剤ラテックスを形成することと、
金属カチオンを含む水溶性塩基の量の存在下で、前記ポリマー添加剤ラテックスをある時間にわたって加熱して、ポリマー添加剤粒子を含む処理済みポリマー添加剤ラテックスを形成することであって、前記金属カチオンが、ナトリウム(Na)以外のアルカリ土類金属及びアルカリ金属から選択される、形成することと、を含む、方法。 - 前記処理済みポリマー添加剤ラテックスから前記ポリマー添加剤粒子を回収することと、前記回収されたポリマー添加剤粒子を親ポリマー粒子と混合して、ポリマー粒子混合物を形成することと、を更に含む、請求項14に記載の方法。
- 前記モノマーが、シクロヘキシルメタクリレート、ジビニルベンゼン、及びジメチル
アミノエチルメタクリレートを含む、請求項14に記載の方法。 - 前記金属カチオンが、Li、K、Cs、Sr、及びBaから選択される、請求項14に記載の方法。
- 前記水溶性塩基が、LiOH、KOH、CsOH、Sr(OH) 2 、及びBa(OH) 2 から選択される、請求項14に記載の方法。
- 前記ポリマー粒子混合物中の前記金属カチオンの濃度Bを判定することと、
前記親ポリマー粒子中の前記金属カチオンの濃度Cを判定することと、
前記回収されたポリマー添加剤粒子中の前記金属カチオンの濃度Dを判定することと、
式A=(B-C)/Dを使用して、前記ポリマー粒子混合物中の前記ポリマー粒子混合物中の前記回収されたポリマー添加剤粒子のポリマー添加剤含有量Aを計算することと、を更に含む、請求項15に記載の方法。 - 前記計算されたポリマー添加剤含有量Aと目標ポリマー添加剤含有量Aとの差を計算することと、前記差を閾値と比較することと、を更に含む、請求項19に記載の方法。
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JP2018054961A (ja) | 2016-09-30 | 2018-04-05 | 京セラドキュメントソリューションズ株式会社 | 2成分現像剤及びその製造方法 |
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US8663886B2 (en) | 2010-12-21 | 2014-03-04 | Xerox Corporation | Toner compositions and processes |
US20150010862A1 (en) | 2013-07-05 | 2015-01-08 | Konica Minolta, Inc. | Two-component developer for developing electrostatic latent image and manufacturing method thereof |
US20180181013A1 (en) | 2014-03-27 | 2018-06-28 | Zeon Corporation | Toner for developing electrostatic images |
JP2016126218A (ja) | 2015-01-07 | 2016-07-11 | キヤノン株式会社 | 画像形成方法及びプロセスカートリッジ |
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