Ministero Dell'universita E Della Ricerca Scientifica E Tecnologica

Montefluos S.p.a.

Istututo Guido Donegani S.p.a.

Luigi Balducci

Franco Montino

Antonio Marraccini

Antonio Pasquale

Guido Cogliati

Francesco Ferrero

Nicola Pernicone

Marcello Pieroni

The invention relates to high-porosity silica xerogels and a process for their preparation consisting of subjecting silica alcogels to thermal treatment in the presence of organic compounds containing amino and hydroxyl groups. The xerogels are characterised by a total pore volume .gtoreq.2 cc/g and a mean pore diameter .gtoreq.100 .ANG..

Process of preparing high-porosity silica xerogels using alkanolamines

A process for producing the precursor of a precipitated catalyst for the sub.3 synthesis, based on Fe, Al, Co and K oxides, which comprises the steps of:

Process for producing the precursor of a precipitated catalyst for the

There are described a new class of organic dyes containing silane groups, the composite pigments obtainable therefrom by associating them with a substrate (SiO.sub.2, TiO.sub.2, Al.sub.2 O.sub.3), and the processes for preparing same. The silane organic dyes have the formula (I): ##STR1## wherein all substituents are defined later. The silane dyes (I) are utilized per se for dyeing natural fibres, such as wool, and man-made fibres, such as the polyamide, polyester, polyacrylic fibres and the like, while the composite pigments prepared from said dyes by association with an inorganic substrate are employed in paints, air enamels and stoving enamels, in the pigmentation of plastics, in the inks, in the printing of textiles etc.

Quinophthalonic dyes containing silane groups and process for preparing

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Pavia, Italy

Luigi Balducci