发明公开
- 专利标题： DISPERSION COMPRISING SILICON DIOXIDE AND POLYCARBOXYLATE ETHER
- 专利标题（中）： 二氧化硅和聚羧酸酯醚分散
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申请号： EP07704014.5申请日： 2007-01-19
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公开(公告)号： EP1981823A1公开(公告)日： 2008-10-22
- 发明人: TONTRUP, Christoph , LORTZ, Wolfgang , DELLER, Klaus , HÜBSCH, Christian , WIELAND, Philipp , GRASSL, Harald , SCHEUL, Stefanie , JETZLSPERGER, Eva , BECHER, Kerstin
- 申请人： Evonik Degussa GmbH , Construction Research and Technology GmbH
- 申请人地址： Rellinghauser Strasse 1-11 45128 Essen DE
- 专利权人： Evonik Degussa GmbH,Construction Research and Technology GmbH
- 当前专利权人： Evonik Degussa GmbH,Construction Research and Technology GmbH
- 当前专利权人地址： Rellinghauser Strasse 1-11 45128 Essen DE
- 优先权： DE102006005093 20060204
- 国际公布： WO2007088111 20070809
- 主分类号： C04B14/06
- IPC分类号： C04B14/06 ; C04B28/02 ; C04B40/00
摘要：
A dispersion which is free of binders and which contains silicon dioxide and at least one water-soluble polycarboxylate ether, where - the silicon dioxide is a pyrogenic silicon dioxide which is present in the form of aggregated primary particles having a BET surface area of 50 to 250 m2/g, and - the aggregates in the dispersion have a mean diameter of less than 1 μm, - based on the total amount of the dispersion, - the water-soluble polycarboxylate ether is a copolymer based on at least one oxyalkylene glycol compound and at least one unsaturated monocarboxylic acid derivative or dicarboxylic acid derivative, - the weight ratio of polycarboxylate ether/silicon dioxide is 0.01 to 100.
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