基本信息:
- 专利标题: DISPERSION COMPRISING CERIUM OXIDE AND SILICON DIOXIDE
- 专利标题(中):包含氧化铈和二氧化硅的分散体
- 申请号:PCT/EP2010/056781 申请日:2010-05-18
- 公开(公告)号:WO2010149434A1 公开(公告)日:2010-12-29
- 发明人: KRÖLL, Michael , LORTZ, Wolfgang , HEBERER, Stefan , BRANDS, Mario , LI, Yuzhuo , DRESCHER, Bettina , FRANZ, Diana
- 申请人: EVONIK DEGUSSA GMBH , BASF SE , KRÖLL, Michael , LORTZ, Wolfgang , HEBERER, Stefan , BRANDS, Mario , LI, Yuzhuo , DRESCHER, Bettina , FRANZ, Diana
- 申请人地址: Rellinghauser Straße 1-11 45128 Essen DE
- 专利权人: EVONIK DEGUSSA GMBH,BASF SE,KRÖLL, Michael,LORTZ, Wolfgang,HEBERER, Stefan,BRANDS, Mario,LI, Yuzhuo,DRESCHER, Bettina,FRANZ, Diana
- 当前专利权人: EVONIK DEGUSSA GMBH,BASF SE,KRÖLL, Michael,LORTZ, Wolfgang,HEBERER, Stefan,BRANDS, Mario,LI, Yuzhuo,DRESCHER, Bettina,FRANZ, Diana
- 当前专利权人地址: Rellinghauser Straße 1-11 45128 Essen DE
- 优先权: DE10 20090625; DE10 20091118
- 主分类号: B24D3/00
- IPC分类号: B24D3/00 ; C03C19/00 ; C09G1/02 ; C09K3/14 ; H01L21/321
摘要:
Aqueous dispersion comprising cerium oxide and silicon dioxide, obtainable by first mixing a cerium oxide starting dispersion and a silicon dioxide starting dispersion while stirring, and then dispersing at a shear rate of 10000 to 30000 s -1 , wherein a) the cerium oxide starting dispersion - contains 0.5 to 30% by weight of cerium oxide particles as the solid phase, - has a d5o of the particle size distribution of 10 to 100 nm - and has a pH of 1 to 7, and b) the silicon dioxide starting dispersion - contains 0.1 to 30% by weight of colloidal silicon dioxide particles as the solid phase, has a d5o of the particle size distribution of 3 to 50 nm and has a pH of 6 to 11.5, d) with the proviso that the d5o of the particle size distribution of the cerium oxide particles is greater than that of the silicon dioxide particles, the cerium oxide/silicon dioxide weight ratio is >1 and the amount of cerium oxide starting dispersion is such that the zeta potential of the dispersion is negative.
摘要(中):
通过在搅拌下首先混合氧化铈起始分散体和二氧化硅起始分散体,然后以10000〜30000s -1的剪切速度分散得到的含有氧化铈和二氧化硅的水分散体,其中a)氧化铈起始分散体 - 含有0.5至30重量%的作为固相的氧化铈颗粒, - 具有10至100nm的粒度分布的d 50,并且具有1至7的pH,以及b)二氧化硅起始分散体 - 含有0.1〜30重量%的作为固相的胶体二氧化硅粒子,其d5o的粒度分布为3〜50nm,pH为6〜11.5,d),条件是粒子的d 50 氧化铈颗粒的尺寸分布大于二氧化硅颗粒的尺寸分布,氧化铈/二氧化硅重量比> 1,并且氧化铈起始分散体的量使得分散体的ζ电位为负。
IPC结构图谱:
B | 作业;运输 |
--B24 | 磨削;抛光 |
----B24D | 磨削、抛光或刃磨用的工具 |
------B24D3/00 | 研磨体或研磨板的物理特征,如特殊性质的研磨面;研磨体或研磨板的成分特征 |