CN1814673B - 强着色红色效应颜料 - Google Patents
强着色红色效应颜料 Download PDFInfo
- Publication number
- CN1814673B CN1814673B CN2006100054721A CN200610005472A CN1814673B CN 1814673 B CN1814673 B CN 1814673B CN 2006100054721 A CN2006100054721 A CN 2006100054721A CN 200610005472 A CN200610005472 A CN 200610005472A CN 1814673 B CN1814673 B CN 1814673B
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- Prior art keywords
- effect pigment
- pigment
- thickness
- thin slice
- sio
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- 239000000049 pigment Substances 0.000 claims abstract description 88
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- 239000011248 coating agent Substances 0.000 claims description 26
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- 229910052742 iron Inorganic materials 0.000 claims description 6
- 235000002864 food coloring agent Nutrition 0.000 claims description 5
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 5
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- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 1
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
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- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0405—Gullies for use in roads or pavements with an odour seal
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
- C09C1/0021—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a core coated with only one layer having a high or low refractive index
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
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- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
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- E—FIXED CONSTRUCTIONS
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Abstract
本发明涉及包含氧化铁涂覆的SiO2薄片的强着色红色效应颜料,其中效应颜料的总厚度不大于500nm(+/-30nm)。本发明还涉及制备这些颜料的方法,其中将SiO2薄片采用氧化铁涂覆,在此选择SiO2薄片和氧化铁层的厚度,使得红色效应颜料的总厚度不大于500nm(+/-30nm),以及涉及这些颜料用于化妆品、油漆、涂料、塑料、薄膜中,用于安全印刷中,用于在文件和身份证件的安全特征中,用于将种子着色,用于将食品着色或用于药剂包衣中以及用于制备颜料组合物和干制剂的用途。
Description
本发明涉及包含氧化铁涂覆的SiO2薄片的强着色红色效应颜料,其中效应颜料的总厚度不大于500nm(+/-30nm)。本发明同样还涉及制备这些颜料的方法,其中将SiO2薄片用氧化铁涂覆,在此选择SiO2薄片和氧化铁层的厚度,使得红色效应颜料的总厚度不大于500nm(+/-30nm),以及这些颜料用于化妆品、油漆、涂料、塑料、薄膜中,用于安全印刷中,用于文件和身份证件的安全特征中,用于将种子着色,用于将食品着色或用于药剂包衣中,以及用于制备颜料组合物和干制剂的用途。
红色光泽颜料或效应颜料的使用很普遍。此类颜料在汽车油漆、所有类型的装饰涂料中和在塑料着色中,在油漆和印刷油墨中以及在装饰性化妆品中的应用中,已经变得必不可少。在围绕它们的基体中,这些颜料理想地自动与涂层表面平行地排列,通过对入射光干涉、反射和吸收的复杂相互作用显示其光学作用。鲜艳的颜色和高光泽度是各种应用所关心的焦点。
此类颜料通常用金属氧化物层,特别是氧化铁层,涂覆薄片状云母而制备。特别是云母具有的缺点在于基材厚度变化范围宽,不能具体设定,这导致基材处的光透射和反射以基本不可控制的方式发生,甚至在透明基材的情况下也是如此,因此不能以特定方式使用。
WO 93/08237公开了由涂覆有氧化铁层的作为基材的二氧化硅基体组成的薄片状红色颜料。此处基体厚度可以在宽范围内调节。WO93/08237中描述的红色颜料的缺点在于,当向较平视角倾斜时,它们呈现不需要有的泛棕色色调。相反地,需要具有纯红色色调和高光泽度的强着色红色效应颜料。此外基材的厚度是500nm,且施涂层的厚度优选是20-250nm。总体上,这样获得具有相对大的总厚度的颜料。但是这对于很多应用是不利的,因为颜料的应用性能被损害,一种现象,其描述于例如P.Hoffmann,W.Duschek,New Effect Pigments(新型效应颜料),报告卷DFG 41,1999,50,123-132中。在涂层应用中,例如,厚颜料在目标平行排列方面出现问题。相对厚的颜料颗粒的不利的几何结构使在粘结剂体系中所需的与表面平行的排列更加困难。相对厚的颜料颗粒倾向于以相对于彼此成一定角度排齐,并因此光不再沿最佳方向反射并且散射效应降低了定向光泽度。此外应用缺点在于例如含颜料涂层的雾度效果(光泽雾)增强和图像清晰度(DOI)变差。此外,仅通过如下事实就导致色彩缺点:相同质量下单个颗粒的质量高意味着涂层应用中颜料颗粒数目显著更少。这对遮盖力、光泽和整体颜色印象有不利影响。因此在厚颜料颗粒的情况下只能困难地获得所需性能。
因此,本发明目的在于找到具有改善的光学性能,特别是具有纯红色色调的红色效应颜料,其可以在非常多样的应用中普遍性使用而没有应用上的缺点。
上述目的通过本发明的颜料实现。本发明因此涉及包含氧化铁涂覆的SiO2薄片的强着色红色效应颜料,其中效应颜料的总厚度不大于500nm(+/-30nm)。
本发明还涉及制备这些颜料的方法,其中将SiO2薄片采用氧化铁涂覆,在此选择SiO2薄片和氧化铁层的厚度,使得红色效应颜料的总厚度不大于500nm(+/-30nm)。
本发明的颜料突出之处在于具有特别正并纯净的红色效果。红色效应颜料令人惊奇地只有非常轻微的随角异色效果,或者一点也没有,并且没有显示具有氧化铁层的其它红色颜料的干涉棕色色调。另外,本发明颜料具有的优点是,它们可以在非常多样的应用中使用,其中它们显示改善的应用性能,例如在涂层应用中具有减轻的雾度效果和更好的图像清晰度(DOI),或者在化妆品配制剂中具有更好的皮肤触感。
由于所述有利性能,本发明的效应颜料普遍性地适用于非常多样类型的大量应用。本发明因此还涉及这些颜料用于化妆品、油漆、涂料、塑料、薄膜中,用于安全印刷中,用于在文件和身份证件中的安全特性中,用于将种子着色,用于将食品着色或用于药剂包衣中以及用于制备颜料组合物和干制剂的用途。
本发明的颜料基于作为基材的合成SiO2薄片,该SiO2薄片具有均一层厚度,并且优选根据国际申请WO 93/08237在连续皮带上通过凝固和水解水玻璃溶液而制备。此处采用“均一层厚度”表示层厚度公差(tolerance)是颗粒总干燥层厚度的3至10%,优选3至5%。薄片状二氧化硅颗粒通常是以无定形形式。此类合成薄片优于天然材料如云母的优点是,层厚度可以根据所需效果调节并且层厚度公差是有限的。
基材直径通常是1至250μm,优选2至100μm。它们的厚度是250至400nm,优选330至350nm。薄片状基材的平均长径比,即平均长度测量值(此处对应于平均直径)与平均厚度测量值的比,通常是5至200,优选20至150,特别优选30至120。
本发明颜料中的所述基材涂覆有氧化铁层,特别是赤铁矿层(α-Fe2O3)。单个氧化铁层的厚度是30至150nm,优选50至130nm。对本发明来说必要的是红色效应颜料的总厚度不超过500nm(+/-30nm)。SiO2薄片的采用氧化铁的涂层可以只存在于两个最大的相对表面上,或以包覆方式存在;SiO2薄片优选完全被氧化铁包覆。在横截面中,由此产生下列颜料结构:
Fe2O3/SiO2/Fe2O3
全部三层的厚度总和必须不超过必要的500nm(+/-30nm)。
为优化所需纯红色色调,有利的是使基材厚度和氧化铁层厚度精确匹配。在此,下列基材和单个氧化铁层的厚度分布是特别优选的:
SiO2基体厚度[nm] 两个Fe2O3层厚度(每层)[nm] 红色颜料总厚度[nm]
250 125+/-15 500+/-30
300 100+/-15 500+/-30
350 75+/-15 500+/-30
400 50+/-15 500+/-30
在本发明另一实施方案中,本发明的效应颜料可以另外被提供有附加的稳定化用有机涂层作为外层。此类涂层的例子在例如EP 0 632109、US 5 759 255、DE 43 17 019、DE 39 29 423、DE 32 35 017、EP 0 492 223、EP 0 342 533、EP 0 268 918、EP 0 141 174、EP0 764 191、WO 98/13426或EP 0 465 805中给出,这些文献的公开内容在此引入作为参考。另外,包含有机涂层,例如有机硅烷或有机钛酸酯或有机锆酸酯的效应颜料除显示上述光学性能外,还显示对气候老化影响如湿度和光的增加的稳定性,这在工业涂料和在汽车领域中是特别感兴趣的。稳定化可通过附加涂层的无机组分而改善。总体上,附加的稳定化用涂层各自比例应该这样选择,即不显著影响本发明的效应颜料的光学性能。
本发明还涉及制备这些颜料的方法,其中将SiO2薄片采用氧化铁涂覆,在此选择SiO2薄片和氧化铁层的厚度,使得红色效应颜料的总厚度不大于500nm(+/-30nm)。基材厚度与施涂的氧化铁层的厚度的各自匹配已经在上文说明。
采用氧化铁层的涂覆可通过湿法化学方法和/或通过CVD或PVD法进行。
本发明的制备效应颜料的方法优选是湿法化学方法,其中可以使用已知开发用于制备珠光颜料的湿法化学涂覆技术,这些技术描述于例如下列公开文本中:
DE 14 67 468、DE 19 59 988、DE 20 09 566、DE 22 14 545、DE 22 15 191、DE 22 44 298、DE 23 13 331、DE 25 22 572、DE31 37 808、DE 31 37 809、DE 31 51 343、DE 31 51 354、DE 3151 355、DE 32 11 602、DE 32 35 017。
为进行涂覆,将SiO2薄片悬浮于水中并通过添加和沉淀相应的无机金属化合物而采用氧化铁涂覆,其中通过同时添加酸或碱而调节用于氧化铁沉淀所必需的pH并保持恒定,然后将涂覆的基材从水悬浮液中分离出,干燥以及任选地锻烧,其中调节单个层的层厚度以使得在干燥和任选地煅烧后,颜料厚度不大于500nm(+/-30nm)。
煅烧温度通常是250至1000℃,特别是350至900℃。
原则上,用于采用氧化铁涂覆颗粒的CVD或PVD法也适用于制备本发明的颜料。此类方法描述于例如W.Ostertag,Nachr.Chem.Tech.Lab 1994,42,849中。此处必要的是,在汽相沉积法中保持基材匀速运动以确保均匀涂覆所有颗粒表面。
另外,在一种同样是根据本发明的方法中,可以另外施涂一层有机涂层作为外层。此类涂覆方法的例子特别在EP 0 632 109、US 5 759255、DE 43 17 019、DE 39 29 423、DE 32 35 017、EP 0 492 223、EP 0 342 533、EP 0 268 918、EP 0 141 174、EP 0 764 191、WO98/13426或EP 0 465 805中给出。有机涂层的例子和相关优点已经在以上描述于本发明颜料的结构说明部分中。有机涂层的施涂工艺步骤可以紧随在本发明方法其它步骤之后。此处施涂的物质在整个颜料中只占0.1至5重量%,优选0.5至3重量%的重量比例。
本发明的效应颜料可以在多种应用中使用。因此,本发明还涉及本发明的颜料用于化妆品、油漆、涂料、塑料、薄膜中,用于安全印刷中,用于在文件和身份证件中的安全特征中,用于将种子着色,用于将食品着色或用于药剂包衣中以及用于制备颜料组合物和干制剂的用途。
在化妆品的情况下,本发明的效应颜料特别适用于在装饰性化妆品方面的产品和配制剂,如指甲油、着色粉、唇膏或眼影、肥皂、牙膏等。本发明的效应颜料当然也可以在配制剂中与所有类型的化妆品原料和助剂结合。这些包括,特别是油、脂、蜡、成膜剂、防腐剂,和一般性决定应用性能的助剂,如增稠剂和流变添加剂,如膨润土、锂蒙脱石、二氧化硅、硅酸钙、明胶、高分子量碳水化合物和/或表面活性助剂等。包含本发明的效应颜料的配制剂可以是亲油、亲水或疏水型的。在具有离散的水相和非水相的非均相配制剂的情况下,本发明的颗粒在每种情况下可以仅存在于两相之一中,或另选,分布于两个相中。
水性配制剂的pH值可以是1至14,优选2至11,特别优选5至8。本发明效应颜料在配制剂中的浓度不受限制。取决于应用,浓度可以是0.001(清洗掉产品,如淋浴凝胶)至99%(如用于特别应用的光泽效果制品)。本发明的效应颜料此外还可与化妆品活性成分结合。合适的活性成分是例如驱虫剂、UV A/BC防护过滤剂(例如OMC、B3、MBC)、防老化活性成分、维生素及其衍生物(例如维生素A、C、E等)、自晒黑剂(特别是例如DHA,赤藓酮糖),以及其它化妆品活性成分,如红没药醇、LPO、ectoine(依克托因)、emblica(余甘子)、尿囊素、生物类黄酮及其衍生物。
在油漆和涂料中使用效应颜料时,本领域技术人员所知的所有应用领域都是可能的,如粉末涂料,汽车油漆,凹版印刷、胶版印刷、丝网印刷或柔性版印刷用印刷油墨,以及户外应用中的涂料。此处的油漆和涂料可以例如是辐射固化性、物理干燥性或化学固化性的。为制备印刷油墨或液体涂料,许多种粘结剂,例如基于丙烯酸酯树脂、甲基丙烯酸酯树脂、聚酯、聚氨酯、硝基纤维素、乙基纤维素、聚酰胺、聚丁酸乙烯酯、酚醛树脂、马来酸类树脂、淀粉或聚乙烯醇、氨基树脂、醇酸树脂、环氧树脂、聚四氟乙烯、聚偏二氟乙烯、聚氯乙烯或其混合物,特别是水溶性品级,都是合适的。涂料可以是粉末涂料或基于水或溶剂的涂料,其中涂料组分的选择遵从本领域技术人员的公知常识。用于粉末涂料的通常的聚合物粘结剂是例如聚酯、环氧树脂、聚氨酯、丙烯酸酯树脂或其混合物。
另外,本发明的效应颜料可用于薄膜和塑料中,因此例如用于农业覆膜、红外反射膜和片材、礼品箔、塑料容器和模塑制品中,该模塑制品用于本领域技术人员已知的所有应用。用于结合入本发明效应颜料的合适塑料是所有通用塑料,如热固性塑料或热塑性塑料。可能的应用和合适的塑料、加工方法和添加剂描述于例如RD 472005或R.Glausch,M.Kieser,R.Maisch,G.Pfaff,J.Weitzel,Perlglanzpigmente(珠光颜料),Curt R.Vincentz出版社,1996,第83页及后几页中,其公开内容在此处引入。
另外,本发明的效应颜料还适合在安全印刷和安全相关的特征中使用,例如防伪卡和身份证件,如入场券、个人身份证、纸币、支票和支票卡以及用于其它防伪文件。在农业领域内,效应颜料可用于将种子和其它起始材料着色,此外在食品领域中用于将食品着色。本发明的效应颜料还可以在药剂如片剂或糖锭剂中用来将包衣着色。
在上述应用领域中,本发明的效应颜料也适合与有机染料和/或颜料,如透明和不透明的白色、彩色和黑色颜料,与薄片状铁的氧化物、有机颜料、全息颜料、LCP(液晶聚合物)和常规的透明、彩色和黑色的基于金属氧化物涂覆的薄片的光泽颜料混合使用,所述金属氧化物涂覆的薄片基于云母、玻璃、Al2O3、Fe2O3、SiO2等。本发明的效应颜料可与可商购颜料和填料以任何比例混合。
可以提及的填料是例如天然和合成云母、尼龙粉末、纯或填充的三聚氰胺树脂、滑石、玻璃、高岭土,铝、镁、钙、锌的氧化物或氢氧化物,BiOCl、硫酸钡、硫酸钙、碳酸钙、碳酸镁、碳,以及这些物质的物理或化学组合。关于填料颗粒形状,没有限制。例如根据要求,其可以是薄片状、球形或针状的。
本发明的效应颜料此外适合用于制备包含一种或多种本发明的颗粒、粘结剂以及非必要的一种或多种添加剂的可流动颜料组合物和干制剂。采用术语“干制剂”来表示包含0至8重量%,优选2至8重量%,特别是3至6重量%水和/或溶剂或溶剂混合物的制剂。干制剂优选是以粒料、颗粒、屑片、香肠状物或压块形式并且具有颗粒尺寸为0.2-80mm。干制剂特别是用于印刷油墨的制备中和用于化妆品配制剂中。
上述所有专利申请、专利和公开出版物的全部公开内容都引入本申请中作为参考。
下列实施例意于用于更详细地解释本发明,但不限制本发明。
实施例
实施例1:
将100g SiO2薄片(365nm厚)在2升软化水中加热至75℃。一边搅拌一边加入1120ml FeCl3溶液(相当于130%Fe2O3)。通过添加氢氧化钠溶液(30%)而保持反应混合物的pH恒定在3。添加FeCl3溶液后,使用氢氧化钠溶液(30%)使pH升高到pH 5。滤出产物并用软化水清洗。在110℃下干燥后,在800℃下锻烧产物。
这样制备的颜料显示在图1中(-▲-)所示的颜色行为。
对比例:
将100g SiO2薄片(445nm厚)在1升软化水中加热至75℃。一边搅拌一边加入237ml FeCl3溶液(相当于27.5%Fe2O3)。通过添加氢氧化钠溶液(30%)而保持反应混合物的pH恒定在3。添加FeCl3溶液后,使用氢氧化钠溶液(30%)使pH升高到pH 5。滤出产物并用软化水清洗。在110℃下干燥后,在800℃下锻烧产物。
这样制备的颜料显示在图1中(-◆-)所示的颜色行为。
图1通过比较具有不同红色色调和不同随角异色行为的效应颜料而显示色彩状况。此处颜色曲线显示在a,b色系中色值的变化,其通过从直角(90度平面图)向180度(横轴是a轴,从左=绿色到右=红色,纵轴是b轴,从底部=蓝色到顶部=黄色)倾斜含颜料的漆卡获得。
典型的氧化铁云母颜料(-●-)在颜色方面较弱,且未显示随角异色。倾斜时的典型泛棕色色调在曲线中不明显。
如WO 93/08237中所述的具有氧化铁涂层的典型SiO2薄片颜料(-◆-)在初始色调中未呈现清晰的红色。倾斜时,发生强随角异色:在此实施例中它变成绿色。
本发明颜料的着色(-▲-)显示饱和红色,其在倾斜时仍保持红色。此颜色一直保留在a,b色系的一个象限内,并且随角异色非常小。
Claims (9)
1.包含氧化铁涂覆的SiO2薄片的强着色红色效应颜料,其中效应颜料的总厚度不大于500nm,所述SiO2薄片的直径是1至250μm,所述SiO2薄片的厚度是250至400nm。
2.根据权利要求1的效应颜料,其特征在于SiO2薄片的厚度是250、300、350或400nm。
3.根据权利要求1或2的效应颜料,其特征在于氧化铁是赤铁矿,即α-Fe2O3。
4.根据权利要求1或2的效应颜料,其特征在于氧化铁层的厚度是30至150nm。
5.根据权利要求1或2的效应颜料,其特征在于另外向效应颜料施涂有机涂层。
6.制备根据权利要求1的效应颜料的方法,其特征在于将SiO2薄片采用氧化铁涂覆,其中选择SiO2薄片和氧化铁层的厚度,使得红色效应颜料的总厚度不大于500nm。
7.根据权利要求6的方法,其特征在于采用氧化铁的涂覆的进行使得层厚度为30至150nm。
8.根据权利要求6或7的方法,其特征在于通过湿法化学方法和/或通过CVD或PVD法进行采用氧化铁的涂覆。
9.权利要求1的效应颜料用于化妆品、油漆、涂料、塑料、薄膜中,用于安全印刷中,用于在文件和身份证件的安全特征中,用于将种子着色,用于将食品着色或用于药剂包衣中,或用于制备颜料组合物和干制剂的用途,其中所述干制剂包含0至8重量%水和/或溶剂或溶剂混合物并且以粒料、颗粒、屑片、香肠状物或压块形式。
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2005
- 2005-01-17 DE DE102005002124A patent/DE102005002124A1/de not_active Withdrawn
- 2005-12-22 EP EP05028172.4A patent/EP1681318B1/de active Active
- 2005-12-22 ES ES05028172T patent/ES2428502T3/es active Active
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2006
- 2006-01-13 US US11/331,449 patent/US7156913B2/en active Active
- 2006-01-13 TW TW095101455A patent/TWI405822B/zh active
- 2006-01-16 CN CN2006100054721A patent/CN1814673B/zh active Active
- 2006-01-16 KR KR1020060004528A patent/KR101312172B1/ko active IP Right Grant
- 2006-01-16 JP JP2006007264A patent/JP2006199960A/ja active Pending
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2013
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Patent Citations (4)
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CN1071673A (zh) * | 1991-10-18 | 1993-05-05 | 默克专利股份有限公司 | 颜料 |
CN1346389A (zh) * | 1999-03-30 | 2002-04-24 | 恩格尔哈德公司 | 呈现出颜色变换的珠光颜料 |
US20030039836A1 (en) * | 2001-08-02 | 2003-02-27 | Merck Patent Gmbh | Multilayered interference pigments |
WO2004035693A1 (en) * | 2002-10-16 | 2004-04-29 | Ciba Specialty Chemicals Holding Inc. | Interference pigments on the basis of silicon oxides |
Also Published As
Publication number | Publication date |
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TW200639221A (en) | 2006-11-16 |
EP1681318B1 (de) | 2013-07-24 |
TWI405822B (zh) | 2013-08-21 |
CN1814673A (zh) | 2006-08-09 |
EP1681318A3 (de) | 2007-09-12 |
KR20060083892A (ko) | 2006-07-21 |
KR20130081686A (ko) | 2013-07-17 |
JP2013100524A (ja) | 2013-05-23 |
EP1681318A2 (de) | 2006-07-19 |
DE102005002124A1 (de) | 2006-07-27 |
ES2428502T3 (es) | 2013-11-08 |
KR101312172B1 (ko) | 2013-09-26 |
JP2006199960A (ja) | 2006-08-03 |
US7156913B2 (en) | 2007-01-02 |
US20060156949A1 (en) | 2006-07-20 |
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