Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von gecoateten, nanoskaligen Hydrotalcit, wobei die einzelnen, primären, nanoskaligen Hydrotalcitpartikel gecoatet sind. Dazu werden erfindungsgemäß in der Fällungsreaktion Additive eingesetzt, um die entsprechenden Hydrotalcitpartikel in gecoateter, nanoskaliger Form zu erhalten. Dabei weist jedes Primärpartikel sein eigenes Coating auf. In einem weiteren Aspekt richtet sich die Anmeldung auf gecoatete primäre, nanoskalige Hydrotalcitpartikel, insbesondere erhältlich gemäß dem erfindungsgemäßen Verfahren. Ein weiterer Aspekt der Erfindung richtet sich auf Komposite enthaltend nanoskalige Hydrotalcite, insbesondere Hydrotalcite hergestellt gemäß der vorliegenden Erfindung. Schließlich richtet sich die vorliegende Anmeldung auf Zusammensetzungen enthaltend Gemische aus Magnesiumhydroxid und Hydrotalcit.
Abstract:
The invention relates to anti-corrosion pigments and can be used in primers, compositions and painting and coating materials for protecting different metals and alloys against corrosion. The anti-corrosion pigment, which contains phosphates of Al and Ca, or Al, Ca and Mg, or Al and Mg, or Zn and Ca, additionally contains stearic acid in the following component ratio: 98-99.5 mass% metal phosphates; stearic acid - the remainder. The anti-corrosion properties of the pigment are enhanced.
Abstract:
Изобретение относится к антикоррозионным пигментам и может быть использовано в грунтовках, композициях, лакокрасочных материалах для защиты различных металлов и сплавов от коррозии. Антикоррозионный пигмент, включающий фосфаты Al и Ca или Al, Ca и Mg, или Al и Mg, или Zn и Ca, дополнительно содержит стеариновую кислоту при следующем соотношении компонентов: фосфаты металлов 98 - 99,5 мacc.% стеариновая кислота остальное. Улучшаются антикоррозионные свойства пигмента.
Abstract:
A method for functionalising a surface of a substrate, the method comprising: (a) providing (i) a silicon-containing compound having two or more leaving groups, and (ii) a first functional compound comprising at least one nucleophilic group; (b) contacting the silicon-containing compound and the functional compound with a surface of a substrate having nucleophilic sites thereon; and (c) exposing the silicon-containing compound, the functional compound and the surface of the substrate to microwave radiation.
Abstract:
The present invention refers to ceramic powders coated with a layer of nanoparticles of multiple crystalline structures and process for obtaining the same. These coatings are obtained by means of the introduction of precursors in water in oil emulsions, which upon decomposition during its detonation, form the nanoparticles that adhere to the surface of the ceramic powder intended to coat. The later base ceramic powder can be synthesized during the emulsion detonation (W/0) or simply be directly placed in its composition. The properties of the obtained coating, such as thickness, adhesion, porosity and coated surface percentage, can be adjusted according to the application desired, the ceramic powders coated being applicable to several types of areas of the nanotechnology, such as electronics, biomedicine, chemistry, ceramics and energy industries.