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Patent Searching and Data


Title:
SUSPENSION POLYMERIZATION TONER OF CORE-SHELL STRUCTURE WITH DENSE CHARGES AND PREPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/101357
Kind Code:
A1
Abstract:
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.

Inventors:
LIU ZHIJUN (CN)
ZHANG YUANYUAN (CN)
ZHANG HUAN (CN)
YUAN XIAO (CN)
MENG HONG (CN)
YANG HUI (CN)
Application Number:
PCT/CN2013/073561
Publication Date:
July 03, 2014
Filing Date:
April 01, 2013
Export Citation:
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Assignee:
SHENZHEN LEPUTAI TECHNOLOGY CO LTD (CN)
International Classes:
G03G9/093
Foreign References:
CN101473274A2009-07-01
CN102778825A2012-11-14
US5958640A1999-09-28
US20030215729A12003-11-20
JPH0315858A1991-01-24
US6200718B12001-03-13
Attorney, Agent or Firm:
SHENZHEN HEDAOYINGLIAN PATENT FIRM (GENERAL PARTNERSHIP) (CN)
深圳市合道英联专利事务所(普通合伙) (CN)
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