发明名称 |
Method of micaceous iron oxide (mio) pigment production. |
摘要 |
<p>This invention relates to a method for producing micaceous iron oxide ( alpha -Fe2O3) particles in the form of substantially hexagonal or circular platelets from insoluble iron(II) compounds comprising ferrous hydroxide, ferrous carbonate or ferrous ferrite and mixtures thereof. The compounds are oxidized at an elevated temperature in the range of 150 DEG C to 300 DEG C, in an aqueous solution of a concentrated alkali metal hydroxide of a concentration between 2 and 16 moles per liter, using gaseous oxygen as the sole oxidizing agent. The product represents a valuable pigment, widely applied as a basic component in barrier anticorrosion coating materials.</p> |
申请公布号 |
EP0416648(A2) |
申请公布日期 |
1991.03.13 |
申请号 |
EP19900117286 |
申请日期 |
1990.09.07 |
申请人 |
CESKOSLOVENSKA AKADEMIE VED |
发明人 |
HANSLIK, TOMAS;NOSEK, ALOIS;SUBRT, JAN;ZAPLETAL, VLADIMIR, DRSC |
分类号 |
C09C1/24;C01G49/06;C09D5/08 |
主分类号 |
C09C1/24 |
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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