Patent ID: 8153834

Claim:
Surface modified inorganic oxide particles comprising an oxide of M wherein M is independently selected from the group consisting of Si, Ti, Zn, Zr, Mn, Al, and combinations thereof; at least one of said particles having a surface covalently bonded to at least one fluorosilane group represented by Formula (1) (L 1 ) d (L 2 ) c Si—(CH 2 ) n —(Z 1 ) a —[C(X 1 ) x ]—(Z 2 ) l -Q 1 -R f wherein L 1 represents an oxygen covalently bonded to an M; and each L 2 independently selected from the group consisting of H, a C 1 -C 2 alkyl, and OH; d and c are integers such that: d≧1, c≧0, d+c=3; each n is independently an integer from 1 to 12; a, x, and 1 are integers chosen such that the moiety of Formula 1 represented by —(Z 1 ) a —[C(X 1 )] x —(Z 2 ) l — R f is chosen from a C 2 -C 12 perfluoroalkyl provided that: i) one fluorine atom of the perfluoroalkyl can be optionally replaced by hydrogen, and/or ii) the perfluoroalkyl can be optionally interrupted by at least one oxygen, methylene, or ethylene; Q 1 is chosen from the group consisting of a C 2 -C 12 hydrocarbylene optionally interrupted by at least one divalent organic group; X 1 is chosen from O or S; a) Z 1 is —NH— and Z 2 is from the group consisting of —NH—, —S—, —NH—S(O) 2 —, —N[C(O)H]—, —[HC(COOH)(R 1 )]CH—S—, and —(R 1 )CH—[HC(COOH)]—S—; each R 1 is independently chosen from hydrogen, phenyl, or a monovalent C 1 -C 8 alkyl optionally terminated by —C 5 H 5 , preferably H or CH 3 ; provided that when Z 1 is —NH— and Z 2 is —NH—, then Q 1 is chosen from the group consisting of a C 2 -C 12 hydrocarbylene interrupted by at least one divalent organic group.