MODIFIED CLAYS, PREPARATION THEREOF AND THERAPEUTICAL COMPOSITIONS CONTAINING THE SAME

摘要

// This invention relates to modified clays comprising a sheet-silicate clay - with a plate separation of from 1.5 to 1.6 nm, with a cation exchange capacity of from 170 to 1700 mEq per 100 g - combined with 0.05 to 0.5 part in weight of magnesium hydroxide per part of clay, and acidic addition products of the same. The invention relates also to a preparation process of these clays, consisting in treating at a temperature between 50.degree.C and about 140.degree.C, possibly under pressure, one part of an appropriate sheet-silicate clay by 0.05 to 0.5 part of magnesium hydroxide for about 3 hours to about 24 hours. The invention relates, finally to therapeutic composition of matter comprising as an essential ingredient therein, a sufficient amount of these clays.