发明名称 |
ALUMINIUM OXIDE POWDER, DISPERSION AND COATING COMPOSITION |
摘要 |
<p>Aluminum oxide powder in the form of aggregates of primary-particles, which has a BET surface area of from 10 to 90 m2/g and comprises as crystalline phases, in addition to gamma-aluminum oxide and/or theta-aluminum oxide, at least 30% of delta-aluminum oxide. It is prepared by vaporizing aluminum chloride and burning the vapor together with hydrogen and air, the ratio of primary air/secondary air being 0.01 to 2, the exit speed vB of the reaction mixture from the burner being at least 10 m/s, the lambda value being 1 to 4, the gamma value being 1 to 3 and the value of gamma*vB/lambda being greater than or equal to 55. Dispersion comprising the aluminum oxide powder. Coating composition comprising the dispersion.</p> |
申请公布号 |
EP1824787(A1) |
申请公布日期 |
2007.08.29 |
申请号 |
EP20050821745 |
申请日期 |
2005.12.20 |
申请人 |
EVONIK DEGUSSA GMBH |
发明人 |
SCHUMACHER, KAI;MOERTERS, MARTIN;FLESCH, JUERGEN;VON TWISTERN, MARCUS;HAMM, VOLKER;SCHMITT, MATTHIAS;ALFF, HARALD;SCHILLING, ROLAND |
分类号 |
C01F7/30;B41M5/00;C01F7/02;C09K3/14 |
主分类号 |
C01F7/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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