Abstract:
Provided is a method for preparing an aqueous dispersion of metal nanoparticles having superior dispersibility and being sinterable at low temperature by modifying the surface of metal nanoparticles having hydrophobic groups with hydrophilic groups. Specifically, by treating the surface hydrophobic groups of the metal nanoparticles with a surface modification solution containing a surfactant and a wetting-dispersing agent, the treatment throughput can be improved about 10-fold and the particles can be monodispersed without agglomeration. Further, by using an antioxidant and a ligand removal agent in the solution, denaturation and oxidation of the particles can be prevented and the high-boiling-point hydrophobic ligands can be eliminated effectively. The hydrophilically treated metal nanoparticles may be dispersed in an aqueous-based solvent to prepare a metal ink sinterable at low temperature.
Abstract:
The present invention relates to aluminium effect pigments having the following properties: a) a d50-value of the volume averaged particle size distribution curve of 1 µm to 15 µm, b) an average thickness h50 of 15 to 150 nm determined by counting from SEM images, c) an x-ray diffractogram measured on said aluminium effect pigments in essentially plane-parallel alignment showing main peaks which are not [111]- or [222]-reflections. Furthermore, the invention relates to an ink jet printing ink and a method of producing an ink jet printing ink and the use of aluminium effect pigments as well as an ink jet printing ink.
Abstract:
The present invention relates to aluminium effect pigments having the following properties: a) a d 50 -value of the volume averaged particle size distribution curve of 1 μm to 15 μm, b) an average thickness h 50 of 15 to 150 nm determined by counting from SEM images, c) an x-ray diffractogram measured on said aluminium effect pigments in essentially plane-parallel alignment showing main peaks which are not [111]- or [222]-reflections. Furthermore, the invention relates to an ink jet printing ink and a method of producing an ink jet printing ink and the use of aluminium effect pigments as well as an ink jet printing ink.
Abstract:
The invention relates to aluminium pigments which are at least partially coated with lubricant. The aluminium pigments have a relative width of the thickness distribution ?h - determined by thickness counting using scanning electron microscopy - calculated on the basis of the corresponding cumulative curve of the relative frequencies according to formula ?h = 1 OO*(h 90 - h 10 )/h 50 , of between 30% and less than 70 %, and an X-ray diffractogram which has been measured on pigments in an essentially plane-parallel arrangement, with one or two main peaks which do not correspond to the [111]-reflexes. The invention also relates to a method for producing the aluminium pigments and to the uses thereof, and to nail varnishes and printing inks containing the aluminium pigments according to the invention.
Abstract translation:本发明涉及铝颜料,其被至少部分地涂覆有润滑剂,其特征在于,所述铝颜料具有通过扫描了基于相对频率的由式相应的筛下物累积曲线上的厚度分布H +的电子显微镜相对宽度经由厚度计数测定3 H = 1 OO *(H 90 SUB> - ħ 10 SUB>)/ H 50 SUB计算>从30%至小于70%,并且X射线,其以基本上平面平行排列的颜料的 用不对应于具有的[111]反射的一个或两个主峰测量。 本发明还涉及一种用于生产铝颜料以及它们的用途和指甲油和根据本发明的含有铝颜料的印刷油墨的方法。
Abstract:
Die Erfindung betrifft Kosmetikum enthaltend ein oder mehrere farbige Effektpigmente, wobei das Kosmetikum (a) ein Effektpigment A mit einem Aluminium-haltigen Kern mit einer durch nasschemische Oxidation des Aluminiumhaltigen Kerns oberflächlich erzeugten farbgebenden umhüllenden Schicht aus Aluminiumoxid, Aluminiumhydroxid und/oder Aluminiumoxidhydrat und/oder (b) ein Effektpigment B mit einem mit mindestens einer Metalloxidschicht umhüllten Kern, wobei in der mindestens einen Metalloxidschicht mindestens ein Farbpigment enthalten ist, umfasst. Des weiteren betrifft die Erfindung die Herstellung eines solchen Kosmetikums.
Abstract:
The present invention relates to a process for the production of plane-parallel platelets, comprising the steps: a) deposition of a separating agent I, which is dissolvable in water, onto a carrier to produce a separating agent layer, b) vapour-deposition of a separating agent II, which is not dissolvable in water, onto the separating agent layer of step a), c) vapour-deposition of at least one product layer onto the separating agent layer of step b), d) vapour-deposition of a separating agent II, which is not dissolvable in water, onto the product layer of step c), e) dissolution of the separating agent layer of step a) in water and production of a suspension in which the at least one product layer is present in the form of plane-parallel platelets, the top surface and the bottom surface, but not the side surfaces of which are covered by the separating agent II, and f) dissolution of the separating agent layer of steps b) and d) in a solvent and production of a suspension in which the product, comprising at least one layer, is present in the form of plane-parallel platelets.