Tolsa, S.a.

Acciona Infraestructuras, S.a.

Antonio Alvarez Berenguer

Julio Santarén Romé

Francisco Javier Limpo Orozco

Manuel Hidalgo Mart&iacute;n

Bernardo Enrique Del Valle &Aacute;lvarez

Eduardo Aguilar Díez

José Moya Corral

Antonio Esteban Cubillo

Miguel Angel Rodriguez Barbero

Carlos Pecharroman Garcia

Maria Pilar Leret Molto

Jose Francisco Fernández Lozano

Fernando R Sanchez Montero

Aurora Maria Casado Barrasa

Jose Vera Agullo

Antonio Heliodoro De Aza Moya

Juan J Aragon Martinez

Antonio Jose Sanchez Rojo

Javier Gravalos Moreno

Elena Palacios Zambrano

Miguel ÁNgel RODRÍGUEZ Barbero

Juan José Aragon Martinez

Process for the preparation of an additive comprising TiOparticles dispersed on a support of pseudo-layered phyllosilicate-type, comprising the dispersion in water of the support, the acid activation of the support and the high-shear dispersion of the support with the TiOparticles Use of the particles obtained by this process as additives with photocatalytic activity for water purification and disinfection, for purification of polluted gas streams and to provide materials, in particular construction materials, with self-cleaning, biocide, deodorization and/or pollution reduction properties in the presence of air and ultraviolet light.

Process for the preparation of an additive comprising supported and dispersed TiO2 particles

The present invention relates to a method for preparing hierarchically ordered structures of inorganic phosphate particles, homogeneously deposited on the surface of a phyllosilicate, which is characterized in that it comprises the following steps: a) obtaining an acid solution of precursor compounds of an inorganic phosphate; b) preparing a dispersion of particles of a phyllosilicate in aqueous medium and acidifying the phyllosilicate dispersion by adding at least one acid, thereby obtaining an acid dispersion; c) mixing the acid solution obtained in step a) with the dispersion obtained in step b); and d), with stirring, adding a base to the mixture obtained in step c) until the required pH value for precipitating the corresponding inorganic phosphate on the phyllosilicate particles has been achieved, resulting in a hierarchically ordered structure of homogeneously distributed submicrometric or nanometric inorganic phosphate particles supported on the phyllosilicate surface.

Method for obtaining hierarchically ordered inorganic phosphate structures on phyllosilicates

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

The present invention relates to a process for obtaining dilane derivatives of sepiolite by reaction with alkoxy-silanes to improve their reinforcing capacity in polymers, the reaction being carried out by placing the finely divided sepiolite and the alkoxy-silane in close contact, either by vaporization of the latter by the action of heat or by the spraying thereof with nitrogen, the contact taking place in countercurrent in a column of suitable dimensions, the reaction temperature ranging between room temperature and the vaporization temperature of the alkoxy-silane, further characterized in that the silane derivative of the sepiolite is subsequently dried to 110.degree. C. to remove the reaction byproducts.

Process for obtaining silane derivatives of sepiolite by reaction with

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Madrid, Spain

Antonio Alvarez Berenguer