发明申请
- 专利标题: Aqueous Dispersion of Hybrid Particles Consisting of Organic or Inorganic Pigment Particles and Organic Nano-Particles and Process for Preparing the Same
- 专利标题(中): 由有机或无机颜料颗粒和有机纳米颗粒组成的混合颗粒的水分散体及其制备方法
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申请号: US11989331申请日: 2006-07-14
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公开(公告)号: US20090099302A1公开(公告)日: 2009-04-16
- 发明人: Eric Jonson , Henk Jan Frans Van Den Abbeele
- 申请人: Eric Jonson , Henk Jan Frans Van Den Abbeele
- 优先权: EP05016756.8 20050802
- 国际申请: PCT/EP2006/006922 WO 20060714
- 主分类号: C09B67/22
- IPC分类号: C09B67/22
摘要:
An aqueous dispersion of hybrid particles consisting of inorganic or organic pigment particles and organic nano-particles attached to the surface of the pigment particles, the nano-particles having a particle size between 2 and 200 nanometers. Preferably the nano-particles have a glass transition temperature of at least 120° C. and comprise co-polymers of vinyl monomers and a mixture comprising maleic anhydride and derivates of maleic anhydride. In a process for preparing such an aqueous dispersion a copolymer of vinyl monomers and maleic anhydride is treated in water with a compound having the general formula R—NH2 of which R is H, alkyl with 1 to 18 C-atoms or aryl, and in the presence of one or more inorganic pigment particles, at least 35% of the maleic anhydride groups being transformed in imides groups.