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Process for the production of rutile mixed-phase pigments
申请公布号：US4917735(A)
申请号：US19890298602
申请日期：1989.01.18
申请公布日期：1990.04.17
发明人：RADEMACHERS, JAKOB;HEISSE, HANS-PETER
分类号：C09C1/36;C01G23/04;C01G23/08;C09C1/00
主分类号：C09C1/36
摘要：A process for the production of rutile mixed-phase pigments comprising calcinating a solid mixture of titanium dioxide and/or titanium dioxide hydrate with a dye-producing metal compound in an indirectly heated rotary kiln supplied with air, wherein the titanium dioxide comprises an uncalcined, salt-free titanium dioxide having a specific BET surface of 50 to 500 m2/g.