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公开(公告)号：US5032377A
公开(公告)日：1991-07-16
申请号：US357998
申请日：1989-05-30
IPC分类号： C04B35/12 , B01F17/14 , B01F17/50 , B01F17/52 , C01B31/30 , C01G37/02 , C04B14/30 , C09C1/34
CPC分类号： C01B31/303 , C01G37/02 , C04B14/307 , C09C1/34 , C01P2004/20 , C01P2004/30 , C01P2004/32 , C01P2004/61 , C01P2006/10 , C01P2006/12 , C01P2006/20 , C04B2111/12
摘要： Chromium oxide green in the form of donut-shaped, ring-shaped or tire-shaped particles having an internal diameter of from 0.01 to 0.5 mm and an external diameter of from 0.05 to 1.0 mm is prepared by spraying an aqueous chromium oxide green suspension through a liquid pressure nozzle into a spray dryer such that the suspension entering the drying space of the spray dryer is rotating.
摘要翻译： 通过将氧化铬绿水悬浮液喷雾通过喷雾形成内径为0.01至0.5mm，外径为0.05至1.0mm的环形，环形或轮胎形状的颗粒形式的氧化铬绿 液体喷嘴进入喷雾干燥器，使得进入喷雾干燥器的干燥空间的悬浮液旋转。
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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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3.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：US4957562A
公开(公告)日：1990-09-18
申请号：US259597
申请日：1988-10-19
CPC分类号： C22B34/32 , C01B31/303 , C09C1/34 , C01P2004/50 , C01P2004/61 , C01P2006/12 , C01P2006/82
摘要： Chrome green oxide useful, inter alia, as a coloring material and having a water number of 10 to 40 g/100 g is prepared by adding sulphonic acid compounds, polyphosphoric acid compounds, polyacrylic acid compounds or mixtures thereof, in quantities of from 0.1 to 2% by weight, to an aqueous suspension of chrome oxide green pigment having a BET surface area of from 1 to 20 m.sup.2 /g before drying, and then drying the suspension.
摘要翻译： 通过将磺酸化合物，多磷酸化合物，聚丙烯酸化合物或其混合物的添加量从0.1至0.1重量份制备，尤其可用作着色材料并且具有10至40g / 100g的水数的铬绿色氧化物 2重量％，与干燥前的BET表面积为1〜20m 2 / g的氧化铬绿色颜料的水性悬浮液混合，然后干燥。
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公开(公告)号：US5185141A
公开(公告)日：1993-02-09
申请号：US484525
申请日：1990-02-26
CPC分类号： C09C1/24 , C01G49/06 , C01P2002/50 , C01P2004/10 , C01P2006/19 , C01P2006/62 , C01P2006/65
摘要： Low-silking iron oxide yellow pigments having improved color qualities are produced by a novel method which utilizes both precipitation process and the Penniman process. Pigments are nucleated and grown by precipitation to achieve multiplication factor of 2.5 to 7 and additional pigment growth is carried out by the Penniman process.
摘要翻译： 通过利用沉淀法和Penniman法两者的新方法制备具有改进颜色品质的低丝氧化铁黄色颜料。 颜料通过沉淀成核并生长，以实现2.5至7的倍增因子，并通过Penniman方法进行附加的颜料生长。
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6.发明授权
公开(公告)号：US5108508A
公开(公告)日：1992-04-28
申请号：US580086
申请日：1990-09-10
申请人： Jakob Rademachers , Hans-Ulrich Hofs , Dieter Rade
发明人： Jakob Rademachers , Hans-Ulrich Hofs , Dieter Rade
CPC分类号： C09C1/36 , C09D133/08 , C01P2004/61
摘要： Novel rutile mixed phase pigment microgranulates are disclosed which comprise hemispherical particles indented to form toroid-shaped beads. The microgranulates are free-flowing, non-dust forming, and are stable in handling.
摘要翻译： 公开了包含缩小以形成环形珠的半球形颗粒的新型金红石混合相颜料微粒。 微粒是自由流动的，无粉尘形成，并且处理稳定。
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