Tolsa, S.a.

Francisco Javier Limpo Orozco

Julio Santarén Romé

Antonio Alvarez Berenguer

Eduardo Aguilar Díez

Antonio Álvarez Berenguer

José Moya Corral

Carlos Pecharroman Garcia

Manuel Hidalgo Mart&iacute;n

Bernardo Enrique Del Valle &Aacute;lvarez

The invention relates to a method of preparing metallic nanoparticles and to the materials thus obtained. More specifically, the invention relates to a method of preparing metallic nanoparticles consisting in: selecting a precursor from the salts, hydroxides and oxides of metallic elements that can be reduced at temperatures below the clay silicate network destruction temperature; and depositing said precursor on a support selected from pseudolaminar phyllosilicate clays. According to the invention the method comprises: (i) a deposition step in which the precursor is deposited on the support: (ii) when the precursor is selected from among salts and hydroxides, a thermal decomposition step in a controlled atmosphere, in which the precursor is subjected to a decomposition process and is transformed into an oxide of the metallic element: and (iii) a reduction step in which the oxide of the metallic element is subjected to a reduction process in a controlled atmosphere. The aforementioned method is performed at temperatures below the clay silicate network destruction temperature.

Method of preparing metallic nanoparticles and materials thus obtained

A water retaining additive for conglomerate building materials, free of cellulose-like derivatives, that comprises at least a rheological grade clay, preferably sepiolite, and a modified natural gum such as guar gum, as well as conglomerate compositions that contain the additive, as well as the use of the additive for different constructions materials comprised of gypsum and special mortars are described.

Additive for special plasters and mortars, compositions containing the additive and utilization of the additive in special plasters and mortars

New additive for projectable agglomerating materials in the building industry, said additive comprising at least one clay of rheologic grade, preferably sepiolite, a water reducer/fluidifier and an aeration agent, as well as the utilization of said additive as component of projectable agglomerating materials such as mortars and concretes.

Technological additive for agglomerating projectable building materials and utilization of the additive in projected mortars and concretes

Growing community of inventors

Madrid, Spain

Francisco Javier Limpo Orozco