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

摘要

PCT No. PCT/FR87/00261 Sec. 371 Date Apr. 28, 1986 Sec. 102(e) Date Apr. 28, 1988 PCT Filed Jul. 2, 1987 PCT Pub. No. WO88/00215 PCT Pub. Date Jan. 14, 1988.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)(Z1x(Z2)yx(XA)z, wherein Z1 is a group having formula (II), R1 being an alkylene having from 3 to 8 carbon atoms optionally interrupted by a heteroatomic group -NH-, R3 and R4 representing each -H or representing together a group -CH=CH-N=CH-, Z2 is a group -R2-SO3H, R2 being an alkylene having from 3 to 8 carbon atoms optionally interrupted by a heteroatomic group -NH-; XZ 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; z 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.