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1.发明授权Finely divided iron oxide black pigments, a process for their preparation and their use 失效细分的氧化铁黑色颜料，其制备方法及其用途
公开(公告)号：US4921542A
公开(公告)日：1990-05-01
申请号：US250076
申请日：1988-09-28
CPC分类号： C08K3/22 , C09C1/24 , C01P2004/61 , C01P2006/60
摘要： Iron oxide black pigments useful as coloring pigments for lacquers and plastics are prepared by an improved process wherein finely divided iron oxide black suspensions obtained from the precipitation processor the aniline process are filtered, washed, dried and ground with the improvement in the process comprising grinding the dried iron oxide pigment in a jet mill with air as the grinding medium and with a water content of from about 1 to 6% by weight based on the iron oxide black pigment input to the process.
摘要翻译： 通过改进的方法制备可用作漆和塑料着色颜料的氧化铁黑色颜料，其中由沉淀处理剂获得的细碎的氧化铁黑色悬浮液将苯胺方法过滤，洗涤，干燥和研磨，其中包括研磨 干燥的氧化铁颜料在喷射式研磨机中以空气作为研磨介质，并且基于输入到该方法的氧化铁黑色颜料，含水量为约1至6重量％。
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2.发明授权
公开(公告)号：US5049195A
公开(公告)日：1991-09-17
申请号：US428113
申请日：1989-11-22
CPC分类号： C09C1/24 , C01P2002/08 , C01P2006/60
摘要： Red iron oxide pigments having a lower metal impurity content and enhanced purity of color are disclosed as being comprised of clusters of spherical particles.
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公开(公告)号：US4911760A
公开(公告)日：1990-03-27
申请号：US189349
申请日：1988-05-02
CPC分类号： C09C1/24 , C01P2002/08 , C01P2006/60
摘要： Iron oxide red pigments comprise clusters of a plurality of pigment particles, preferably at least five intergrown spherical particles, are prepared by conducting nuclear formation of iron oxide yellow .alpha.-FeOOH in the presence of compounds of the elements, B, Al, Ga, Si, Ge, Sn or mixtures thereof in quantities of from 0.05 to 10% by weight, calculated as tri- or tetravalent oxides and based on the arithmetically calculated precipitated .alpha.-FeOOH nuclei, separating brine from the resulting yellow slurry to isolate an iron oxide yellow paste, drying and annealing the paste to form iron oxide red pigment and grinding the red pigment, which pigment is useful in coloring foodstuffs, lacquers, plastics and building materials.
摘要翻译： 氧化铁红色颜料包含多个颜料颗粒的簇，优选至少五个共生的球形颗粒，通过在元素B，Al，Ga，Si的化合物存在下进行氧化铁黄色α-FeOOH的核形成 ，Ge，Sn或其混合物，其量为0.05至10重量％，以三价或四价氧化物计算，并且基于算术计算的沉淀的α-FeOOH核，从所得黄色浆料中分离出盐水以分离出氧化铁黄 糊状，干燥退火，形成氧化铁红色颜料，并研磨红色颜料，该颜料可用于着色食品，油漆，塑料和建筑材料。
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公开(公告)号：US5032180A
公开(公告)日：1991-07-16
申请号：US529104
申请日：1990-05-25
CPC分类号： C01G49/06 , C09C1/24 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C01P2006/65
摘要： A process for the production of iron oxide yellow pigments by the Penniman-Zoph process from the raw materials iron (II) sulfate, sodium hydroxide and metallic iron, is disclosed in which iron (II) is oxidized to iron (III) by gassing with air in the presence of goethite nuclei, the iron (III) sulfate is dissolved to form iron (II) and the goethite nuclei are built up to iron oxide yellow pigments, characterized in that the gassing with air and dissolving of the metal are carried out in separate vessels.
摘要翻译： 公开了通过Penniman-Zoph工艺从原料硫酸铁（II），氢氧化钠和金属铁中生产氧化铁黄色颜料的方法，其中铁（II）通过气化而氧化成铁（III） 在针铁矿核存在的情况下，将硫酸铁（III）溶解形成铁（II），并将针铁矿核构建成氧化铁黄色颜料，其特征在于进行空气的放出和金属的溶解 在独立的船只。
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5.发明授权Color intensive iron oxide black pigments obtained by the nitrobenzene reduction process and a process for its preparation 失效通过硝基苯还原过程得到的颜色密集型氧化铁黑色颜料及其制备方法
公开(公告)号：US4966641A
公开(公告)日：1990-10-30
申请号：US281912
申请日：1988-12-07
CPC分类号： B82Y30/00 , C01G49/08 , C09C1/24 , C01P2002/60 , C01P2004/02 , C01P2004/64 , C01P2006/12 , C01P2006/60 , C01P2006/64
摘要： Iron oxide black pigment with improved color intensity is produced by subjecting finely divided pigment obtained from reaction of metallic iron with aromatic nitro compounds to a heat treatment of 200.degree. to 800.degree. C. under a non-oxidizing atmosphere for a time of 2 minutes to 5 hours.
摘要翻译： 通过将金属铁与芳族硝基化合物的反应得到的细碎颜料在非氧化气氛下进行200〜800℃的热处理2分钟，得到具有改善的颜色强度的氧化铁黑色颜料， 5个小时。
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