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1. 发明授权

US4851049A Thermostable bismuth vanadate/molybdate pigments 失效
标题翻译：耐热稳定的钒酸铋/钼酸盐颜料
公开(公告)号：US4851049A
公开(公告)日：1989-07-25
申请号：US130652
申请日：1987-12-09
申请人： Henning Wienand , Werner Ostertag , Christoph Schwidetzky , Helmut Knittel
发明人： Henning Wienand , Werner Ostertag , Christoph Schwidetzky , Helmut Knittel
IPC分类号： C08K9/04 , C09C1/00 , C09C3/00 , C09D7/12
CPC分类号： C09C1/0006 , C09C3/006 , C01P2004/84
摘要： Thermostable bismuth vanadate/molybdate pigments are prepared by precipitating onto a pigment, obtained by calcination, of the formulaBi VO.sub.4 .cndot.Bi.sub.2 Mo O.sub.6where n is 0.2-2.5, in aqueous suspension at 70.degree.-100.degree. C. within the pH range from 4 to 9.5 a first SiO.sub.2 -containing layer using an alkali metal silicate solution of a magnesium hexafluorosilicate solution, maintaining the suspension at 70.degree.-100.degree. C. for not less than 1 hour, producing a thick coating on the precoated pigment by adding further alkali metal silicate solution, magnesium hexafluorosilicate solution or a mixture of the two within the pH range from 4 to 9.5, and finally depositing wax on the SiO.sub.2 -containing layer by means of a waxing emulsion/dispersion, the products showing, compared with the starting pigment, an appreciably improved thermal stability in plastics.
摘要翻译：热稳定的钒酸铋/钼酸盐颜料通过在pH为4范围内，在70℃-100℃的水悬浮液中沉淀到通过煅烧获得的式Bi VO 4 .Bi 2 MoO 6（其中n为0.2-2.5）的颜料上制备使用六氟硅酸镁溶液的碱金属硅酸盐溶液至9.5的第一含SiO 2层，将悬浮液保持在70℃-100℃下不少于1小时，通过加入另外的碱在预涂颜料上产生厚的涂层金属硅酸盐溶液，六氟硅酸镁溶液或两者的混合物在pH范围为4至9.5之间，最后通过打蜡乳液/分散体将蜡沉积在含SiO 2的层上，与起始颜料相比，产物显示出来，塑料的热稳定性明显提高。

2. 发明授权

US5451253A Preparation of transparent yellow iron oxide pigments 失效
标题翻译：透明黄色氧化铁颜料的制备
公开(公告)号：US5451253A
公开(公告)日：1995-09-19
申请号：US223992
申请日：1994-04-04
申请人： Paul Klingelhoefer , Christoph Schwidetzky , Henning Wienand , Norbert Mronga , Ekkehard Schwab , Michael Nebel
发明人： Paul Klingelhoefer , Christoph Schwidetzky , Henning Wienand , Norbert Mronga , Ekkehard Schwab , Michael Nebel
IPC分类号： C01G49/02 , C01G49/06 , C08K3/22 , C08K9/10 , C09C1/22 , C09C1/24
CPC分类号： C01G49/06 , C08K3/22 , C08K9/10 , C09C1/24 , C01P2004/10 , C01P2006/11 , C01P2006/12 , C01P2006/62 , C01P2006/65 , C01P2006/80
摘要： A process for preparing transparent yellow iron oxide pigments by the precipitation of iron (II) hydroxide by adding an inorganic base to an iron (II) salt solution and subsequent oxidation to FeOOH.
摘要翻译：通过向铁（II）盐溶液中加入无机碱并随后氧化成FeOOH，通过沉淀氢氧化铁（II）制备透明的黄色氧化铁颜料的方法。

3. 发明授权

US5244649A Production of hematite pigments in the form of platelets 失效
标题翻译：生产胶片形式的染色剂
公开(公告)号：US5244649A
公开(公告)日：1993-09-14
申请号：US571512
申请日：1990-08-23
申请人： Werner Ostertag , Christoph Schwidetzky , Norbert Mronga
发明人： Werner Ostertag , Christoph Schwidetzky , Norbert Mronga
IPC分类号： C01G49/06 , C09C1/22 , C09C1/24
CPC分类号： C09C1/245 , C01P2004/20 , C01P2006/62
摘要： Iron oxides in the form of platelets are produced by hydrothermal treatment of aqueous suspensions containing iron(III) hydroxide or oxide hydrates in the presence of alkali metal hydroxides and of aluminum and/or silicon compounds in two stages. The normality of the alkali is from 0 2 to 2 N in the first stage and is increased by from 0.2 to 2.5 in the second stage.The two-stage process according to the invention makes it possible to produce hematite pigments which are in the form of platelets, have increased luster, larger particle diameter, improved dispersibility and color hues which can be adjusted as desired.
摘要翻译：通过在碱金属氢氧化物和铝和/或硅化合物的存在下，在两个阶段水热处理含有氢氧化铁（III）或氧化物水合物的水悬浮液来制备血小板形式的氧化铁。碱的正常性在第一阶段为0-2〜2N，在第二阶段为0.2〜2.5。根据本发明的两阶段方法使得可以制备呈血小板形式的赤铁矿颜料，具有增加的光泽，更大的粒径，改善的分散性和可以根据需要调节的色调。

4. 发明授权

US5411586A Luster pigments containing bismuth vanadate 失效
标题翻译：含有钒酸铋的光泽颜料
公开(公告)号：US5411586A
公开(公告)日：1995-05-02
申请号：US266481
申请日：1994-06-27
申请人： Raimund Schmid , Norbert Mronga , Harald Ochmann , Christoph Schwidetzky
发明人： Raimund Schmid , Norbert Mronga , Harald Ochmann , Christoph Schwidetzky
IPC分类号： C09C3/06 , C09C1/00 , C04B14/00
CPC分类号： C09C1/0015 , C01P2004/84
摘要： Luster pigments comprise coated plateletlike substrates wherein the coating comprises a layer comprising bismuth vanadate.
摘要翻译：光泽颜料包括涂覆的片状基材，其中涂层包含包含钒酸铋的层。

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