Oligo - elements electro - negative, composition and process for their preparation

摘要

The invention relates to the oligo - elements electro - negative. / p & & p & these latter are obtained by a process according to which it picks up of the ions electro - negative produced by an appropriate incorporated, and are placed in contact with these ions electro - negative with a material, for example a metallic mass, which is capable of producing the oligo - elements which, in the presence of the ions electro - negative captured, are converted to oligo - elements electro - negative.