NEW COMPOSITIONS BASED ON DERIVATIVES OF SILICA MODIFIED BY ORGANIC GROUPS, PREPARATION AND APPLICATION THEREOF, PARTICULARLY AS CATIONIC CONDUCTORS

摘要

Composition based on derivatives of silica modified by organic groups, characterized in that said derivatives are amorphous solids having formula (I) SiO2-0,5(x+y)(Z<1>)x(Z<2>)y.(XA)z, wherein Z<1> is a group having formula (II), R<1> being an alkylene having from 3 to 8 carbon atoms optionally interrupted by a heteroatomic group -NH-, R<3> and R<4> representing each -H or representing together a group -CH=CH-N=CH-, Z<2> is a group -R<2>-SO3H, R<2> being an alkylene having from 3 to 8 carbon atoms optionally interrupted by a heteroatomic group -NH-; XA is an acid (case where X=H) or a salt (case where X=metal) soluble in water; x is a number different from 0 and lower or equal to 1; y is a number which may vary from 0 to 0.5 and not higher than x; x and y being such that the sum (x+y) is higher or equal to 1/3; it being understood that the sum (x+y) is at the most equal to 1; and z is a number which is optionally nil and such that the ratio (z+y)/x is higher than 0 and lower than or equal to 1; its preparation and its application as an agent for the transmission of electromagnetic waves and/or electric currents.