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公开(公告)号：EP1776424B1
公开(公告)日：2008-07-02
申请号：EP05763398.4
申请日：2005-07-08
IPC分类号： C09C1/36
CPC分类号： C09C1/3661 , C01P2002/30 , C01P2004/84 , C01P2006/64 , C08K3/22 , C08K9/02 , C09D7/62
摘要： The invention relates to a method for the post-treatment of titanium dioxide for the production of particularly weather-resistant titanium dioxide pigments with good optical properties. The method is characterised in that in addition to the water-containing oxides of tin and zirconium, at least one further oxide of the group aluminium, silicon and titanium is co-precipitated on the particle surface. The addition of the post-treatment components to the aqueous TiO 2 suspension either occurs in acidic solution (pH value of max. 3) or in alkaline solution (pH value of min. 10). The pH value is subsequently adjusted to 6 to 8. By means of subsequent tempering of the pigment at elevated temperatures of over 125 and up to 500 °C, the colour tone b can be improved. The pigment is particularly suitable for use in dyes, paints and plastics.
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公开(公告)号：EP1771519A1
公开(公告)日：2007-04-11
申请号：EP05760729.3
申请日：2005-06-23
IPC分类号： C09C1/36
CPC分类号： C09C1/3661 , C01P2002/52 , C01P2004/84 , C01P2006/12 , C08K3/22 , C08K9/02 , C09D7/62
摘要： The invention relates to a weather-stable titanium dioxide pigment, which has good optical properties and a dense silicon dioxide skin doped with metal atoms. Particularly suitable doping elements are tin, zirconium and titanium. The dense silicon dioxide skin consists of a number of layers, the innermost of which not containing a significant quantity of metal atoms. The inventive coating is produced by adding the constituents in succession into the alkaline suspension (pH value of at least 9) during which the pH value decreases. In order to completely form the doped dense SiO2 skin, it is necessary to slowly decrease the pH value until reaching a value less than 9. The pigment is particularly suited for use in paints, varnishes and plastics.
摘要翻译： 本发明涉及一种耐候性好的二氧化钛颜料，其具有良好的光学性能和掺杂有金属原子的致密二氧化硅表层。 特别合适的掺杂元素是锡，锆和钛。 致密的二氧化硅表层由许多层构成，其中最内层不含大量的金属原子。 本发明的涂层通过将组分连续添加到pH值降低的碱性悬浮液（pH值至少为9）中来制备。 为了完全形成掺杂的致密SiO 2表皮，有必要缓慢降低pH值直到达到小于9的值。该颜料特别适用于油漆，清漆和塑料。
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公开(公告)号：EP2875077B1
公开(公告)日：2020-03-25
申请号：EP13753808.8
申请日：2013-06-20
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公开(公告)号：EP1989264B1
公开(公告)日：2012-09-05
申请号：EP07703018.7
申请日：2007-01-25
CPC分类号： C09C1/3661 , C01P2006/12 , C01P2006/62 , D21H17/675 , D21H17/69 , D21H27/26
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公开(公告)号：EP1646692A1
公开(公告)日：2006-04-19
申请号：EP04740357.1
申请日：2004-06-26
CPC分类号： D21H17/69 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C09C1/3661 , D21H17/675 , Y10T428/2991
摘要： The invention relates to a method for treating the surface of a titanium dioxide, said method enabling the production of pigments with an enhanced retention and opacity, wherein a constantly high opacity can be achieved with less pigment. The method is characterized in that an aluminum constituent and a phosphorous constituent are initially added to a TiO2 suspension, during which the pH value thereof does not fall below 10. The pH value of the suspension is then lowered to 9 by adding an acid component. The pigment produced according to the invention is excellently suitable for use as decorating paper.
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6.发明公开VERFAHREN ZUR OBERFLÄCHENBESCHICHTUNG VON ANORGANISCHEN PARTIKELN MIT SILICIUMDIOXID UND MINDESTENS EINER WEITEREN ANORGANISCHEN VERBINDUNG 审中-公开VERFAHREN ZUROBERFLÄCHENBESCHICHTUNGVON ANORGANISCHEN PARTIKELN MIT SILICIUMDIOXID UND MINDESTENS EINER WEITEREN ANORGANISCHEN VERBINDUNG
公开(公告)号：EP3183301A1
公开(公告)日：2017-06-28
申请号：EP15745151.9
申请日：2015-07-24
摘要： The invention relates to a method for surface coating of inorganic particles in aqueous phase, in particular of titanium oxide pigment particles with a dense silicon dioxide shell and at least one additional inorganic compound, in particular with aluminum oxide, wherein the coating extensively consists of separate layers. The method is characterized in that, following application of the silicon dioxide layer, the particles are separated from the suspension, washed, and heat-treated and then pasted into an aqueous suspension again and coated with at least one additional inorganic compound. The heat treatment preferably occurs at temperatures from 400°C to 800°C. Titanium dioxide pigment particles treated with SiO
2 and Al
2 O
3 according to the invention are characterized by improved tint reducing power, reduced acid solubility, and an isoelectric point shifted to higher pH values.摘要翻译： 本发明涉及用二氧化硅和至少一种另外的无机化合物，特别是与氧化铝的稠密表层涂覆水相中的无机颗粒表面，特别是二氧化钛颜料颗粒的表面的方法，其中涂层主要由 的单独图层。 用根据本发明的SiO 2和Al 2 O 3处理的二氧化钛颜料颗粒的特征在于改进的着色强度，降低的酸溶解度和等电点向更高的pH值移动。
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公开(公告)号：EP1646692B1
公开(公告)日：2016-06-08
申请号：EP04740357.1
申请日：2004-06-26
CPC分类号： D21H17/69 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C09C1/3661 , D21H17/675 , Y10T428/2991
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8.发明公开VERFAHREN ZUR OBERFLÄCHENBEHANDLUNG EINES TITANDIOXID-PIGMENTS 有权VERFAHREN ZUROBERFLÄCHENBEHANDLUNGEINES TITANDIOXID-PIGMENTS
公开(公告)号：EP2694599A1
公开(公告)日：2014-02-12
申请号：EP12712223.2
申请日：2012-03-21
IPC分类号： C09C1/36
CPC分类号： C09C1/3661 , C01P2004/86 , C01P2006/62 , C01P2006/80 , C09C1/3653 , D21H17/675 , D21H17/69 , D21H21/28 , D21H27/26
摘要： The invention relates to a method for the surface treatment of a titanium dioxide with aluminium phosphate and aqueous aluminium oxide, which results in pigments having improved greying stability and at the same time good brightness and opacity. The method is characterised in that, first of all, phosphoric acid is added to a TiO
2 suspension having a pH of at least 8, whereupon the pH drops to 3 or below. Subsequently an alkaline aluminium compound is added and the pH increases to at least 5 and thereafter an acid aluminium compound is added, the pH adjusting to 4.5 to 7. The pigment produced according to the method of the invention is excellently suitable for use in decorative paper.摘要翻译： 本发明涉及一种用磷酸铝和水合氧化铝对二氧化钛进行表面处理的方法，其导致具有改善耐灰变性的颜料，同时保持良好的亮度和不透明度。 该方法的特征在于，最初将磷酸加入pH值至少为8的TiO 2悬浮液中，其中pH值降至3或更低。 随后加入碱性铝化合物，其中pH升至至少5，之后加入酸性铝化合物，结果得到4.5至7的pH值。 通过本发明的方法制造的颜料特别适用于装饰层压纸。
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9.发明公开MIT HOHLKÖRPERN BESCHICHTETES TITANDIOXID-PIGMENT UND VERFAHREN ZUR HERSTELLUNG 审中-公开与空心体包裹的二氧化钛颜料及其制备方法
公开(公告)号：EP1994098A2
公开(公告)日：2008-11-26
申请号：EP07711855.2
申请日：2007-03-08
IPC分类号： C09C1/36
CPC分类号： C09C1/3692 , C09C1/3661 , C09C1/3676 , D21H17/675 , D21H17/69 , D21H27/26
摘要： The invention relates to a coated titanium dioxide pigment that has good opacity and good retention and is used in decorative paper. Also disclosed is a method for producing said pigment. The inventive pigment is characterized by a surface coating containing aluminum oxide phosphate and attached hollow bodies. The inventive production method is characterized in that an aluminum component and a phosphorus component are first introduced into a TiO2 suspension while the pH value does not drop below 10. Then the hollow bodies are added, whereupon at least one acidic component is added such that the pH value of the suspension is lowered to a value ranging between 4 and 9. In an alternative embodiment of said method, the suspension has a pH value of less than 4 when the aluminum component and the phosphorus component are added.
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10.发明授权
公开(公告)号：EP1771519B1
公开(公告)日：2007-12-12
申请号：EP05760729.3
申请日：2005-06-23
IPC分类号： C09C1/36
CPC分类号： C09C1/3661 , C01P2002/52 , C01P2004/84 , C01P2006/12 , C08K3/22 , C08K9/02 , C09D7/62
摘要： The invention relates to a weather-stable titanium dioxide pigment, which has good optical properties and a dense silicon dioxide skin doped with metal atoms. Particularly suitable doping elements are tin, zirconium and titanium. The dense silicon dioxide skin consists of a number of layers, the innermost of which not containing a significant quantity of metal atoms. The inventive coating is produced by adding the constituents in succession into the alkaline suspension (pH value of at least 9) during which the pH value decreases. In order to completely form the doped dense SiO 2 skin, it is necessary to slowly decrease the pH value until reaching a value less than 9. The pigment is particularly suited for use in paints, varnishes and plastics.
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