Modified fluorosulfonic acids

A compound having the formula

• ›(HO).sub.n R.sup.1.sub.m SiR.sup.2 R.sub.f SO.sub.3.sup.-!.sub.x Q.sup.x+II
• wherein:
• each R.sup.1 is a non-hydrolyzable group independently selected from the group consisting of:
• alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl and aralkyl;
• n is an integer from 1 to 3, and m is an integer from 0 to 2, wherein n+m=3;
• R.sup.2 is a bidentate hydrocarbylene group having at least 2 carbon atoms between Si and R.sub.f,
• R.sub.f is a substantially fluorinated bidentate hydrocarbylene group;
• Q is H, NH.sub.4 or a metal ion, each Q having a valence of x;
• and
• x is a number 1 to 4.

A siloxane or a polysiloxane, comprising:

• at least two groups, said groups being the same or different, having the formula
• --O).sub.q (OH).sub.n-q SiR.sup.1.sub.m R.sup.2 R.sub.f SO.sub.3 Q,
• wherein:
• each R.sup.1 is a non-hydrolyzable group independently selected from the group consisting of:
• alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl and aralkyl;
• n is an integer from 1 to 3, and m is an integer from 0 to 2, wherein n+m=3;
• R.sup.2 is a bidentate hydrocarbylene group providing at least 2 carbon atoms between Si and R.sub.f ;
• R.sub.f is a substantially fluorinated bidentate hydrocarbylene group;
• Q is H, NH.sub.4 or a metal ion, each Q having a valence of x;
• x is a number from 1 to 4;
• and
• q is l to n.

A composite, comprising:

• a metal oxide network with at least one group having the formula
• --O).sub.q Si(OH).sub.n-q R.sup.1.sub.m R.sup.2 R.sub.f SO.sub.3 Q
• incorporated within said metal oxide network, wherein:
• each R.sup.1 is a non-hydrolyzable group independently selected from the group consisting of:
• alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl and aralkyl;
• n is an integer from 1 to 3, and m is an integer from 0 to 2, wherein n+m=3;
• R.sup.2 is a bidentate hydrocarbylene group having at least 2 carbon atoms between Si and R.sub.f ;
• R.sub.f is a substantially fluorinated bidentate hydrocarbylene group;
• Q is H, NH.sub.4 or a metal ion, each Q having a valence of x;
• x is a number from 1 to 4;
• and
• q is l to n.

A composition, comprising:

• a solid material having a reactive surface to which surface is attached at least one group having the formula
• --O).sub.q Si(OH).sub.n-q R.sup.1.sub.m R.sup.2 R.sub.f SO.sub.3 Q,
• wherein:
• each R.sup.1 is a non-hydrolyzable group independently selected from the group consisting of:
• alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl and aralkyl;
• n is an integer from 1 to 3, and m is an integer from 0 to 2, wherein n+m=3;
• R.sup.2 is a bidentate hydrocarbylene group having at least 2 carbon atoms between Si and R.sub.f ;
• R.sub.f is a substantially fluorinated bidentate hydrocarbylene group;
• Q is H, NH.sub.4 or a metal ion, each Q having a valence of x;
• x is a number from 1 to 4;
• and
• q is l to n.