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1. WO2014101357 - SUSPENSION POLYMERIZATION TONER OF CORE-SHELL STRUCTURE WITH DENSE CHARGES AND PREPARATION METHOD

Publication Number WO/2014/101357
Publication Date 03.07.2014
International Application No. PCT/CN2013/073561
International Filing Date 01.04.2013
IPC
G03G 9/093 2006.1
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
093Encapsulated toner particles
CPC
G03G 9/0806
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
0802Preparation methods
0804whereby the components are brought together in a liquid dispersing medium
0806whereby chemical synthesis of at least one of the toner components takes place
G03G 9/0819
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
0819characterised by the dimensions of the particles
G03G 9/0827
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
0827characterised by their shape, e.g. degree of sphericity
G03G 9/09321
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
093Encapsulated toner particles
09307specified by the shell material
09314Macromolecular compounds
09321obtained by reactions only involving carbon-to-carbon unsaturated bonds
G03G 9/09328
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
093Encapsulated toner particles
09307specified by the shell material
09314Macromolecular compounds
09328obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
G03G 9/09371
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
9Developers
08with toner particles
093Encapsulated toner particles
0935specified by the core material
09357Macromolecular compounds
09371obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Applicants
  • 深圳市乐普泰科技股份有限公司 SHENZHEN LEPUTAI TECHNOLOGY CO., LTD [CN]/[CN]
Inventors
  • 刘志军 LIU, Zhijun
  • 张媛媛 ZHANG, Yuanyuan
  • 张欢 ZHANG, Huan
  • 苑哓 YUAN, Xiao
  • 孟鸿 MENG, Hong
  • 羊辉 YANG, Hui
Agents
  • 深圳市合道英联专利事务所(普通合伙) SHENZHEN HEDAOYINGLIAN PATENT FIRM (GENERAL PARTNERSHIP)
Priority Data
201210580669.327.12.2012CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) SUSPENSION POLYMERIZATION TONER OF CORE-SHELL STRUCTURE WITH DENSE CHARGES AND PREPARATION METHOD
(FR) TONER DE POLYMÉRISATION EN SUSPENSION D'UNE STRUCTURE NOYAU-ENVELOPPE À CHARGES DENSES, ET PROCÉDÉ DE PRÉPARATION
(ZH) 具有密集电荷核壳结构的悬浮聚合墨粉及制备方法
Abstract
(EN) Suspension polymerization toner of a core-shell structure with dense charges comprises core-shell composite particles prepared by mixing suspension dispersion liquid of toner core particles with shell monomer emulsion and resin-type CCA dispersion liquid, and carrying out a polymerization reaction to form rigid shell layers with dense charges coated on the soft toner core particles. A preparation method thereof comprises: mixing a low-Tg monomer oil phase forming toner core particles with aqueous dispersion liquid, carrying out a heating polymerization reaction after suspension granulation to convert monomer oil droplet particles to polymer particles, and obtaining soft toner core particles; adding a high-Tg shell monomer forming rigid shell layers into water containing a surfactant to form emulsion, adding the emulsion and CCA dispersion liquid into suspension dispersion liquid of the soft toner core particles for secondary polymerization after mixing, and cleaning, filtering, drying and performing additive treatment. As a resin-type CCA has good compatibility with toner shell resin, and does not fall off a surface of the toner easily, the toner has an high electrified amount and good environmental stability, and is excellent in imaging property, low-temperature fixation property and transfer printing property.
(FR) L'invention concerne un toner de polymérisation en suspension d'une structure noyau-enveloppe à charges denses, qui comprend des particules composites noyau-enveloppe préparées par mélange d'un liquide de dispersion en suspension de particules noyau de toner à émulsion de monomères enveloppe et d'un liquide de dispersion CCA de type résine; et par réaction de polymérisation pour former des couches enveloppe rigides à charges denses revêtant les particules noyau molles de toner. Un procédé de préparation du toner consiste à mélanger une phase huileuse de monomères à faible Tg formant des particules noyau de toner avec un liquide de dispersion aqueuse; à effectuer une réaction de polymérisation par chauffage après granulation de la suspension pour convertir des particules en globules d'huile de monomère en particules de polymère, et obtenir des particules noyau molles de toner; à ajouter un monomère enveloppe à haute Tg formant des couches enveloppe rigides dans de l'eau contenant un tensioactif pour former une émulsion; à ajouter l'émulsion et le liquide de dispersion CCA dans un liquide de dispersion en suspension des particules noyau molles de toner pour réaliser une polymérisation secondaire après mélange, nettoyage, filtration, séchage et traitement par adjuvant. Comme un CCA de type résine présente une bonne compatibilité avec une résine enveloppe de toner, et ne se détache pas facilement de la surface du toner, le toner de l'invention présente un niveau d'électrisation élevé et une bonne stabilité environnementale, et possède d'excellentes propriétés d'imagerie, de fixation à basse température et d'impression par transfert.
(ZH) 具有密集电荷核壳结构的悬浮聚合墨粉,是将墨粉核粒子的悬浮分散液与壳单体乳液及树脂型CCA分散液混合,通过聚合反应形成在该软性墨粉核粒子外包覆有密集电荷的刚性壳层的核壳复合粒子。其制备方法为:将构成墨粉核粒子的低Tg的单体油相与水性分散液混合,悬浮造粒后经升温聚合反应使单体油滴粒子转化为聚合物颗粒,得到软性墨粉核粒子;将构成刚性壳层的高Tg壳单体加入含有表面活性剂的水中形成乳液后与CCA分散液加入至软性墨粉核粒子的悬浮分散液中混合后进行二次聚合,清洗、过滤、干燥、外添处理即可。墨粉由于树脂型CCA与墨粉壳树脂具有良好的相容性,不易从墨粉表面剥落,故带电量高及环境稳定性好,具有优异的成像特性、低温定影性和转印性。
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