Fluoroalkyl silanes

1. A fluorosilane represented by

(L) 3 -Si—(CH 2 ) n —(Z 1 ) a —[C(X 1 )] x —(Z 2 ) l -Q 1 -R f   Formula 1

wherein:

each n is independently an integer from 1 to 12;

L is independently chosen from a hydrolysable or non-hydrolysable monovalent group

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;

Z 2 is —NH— and Z 1 is from the group consisting of —O—, and —S—;

each R 1 is independently chosen from hydrogen, phenyl, or a monovalent C 1 -C 8 alkyl optionally terminated by —C 6 H 5 , preferably H or CH 3 .

2. The fluorosilane of claim 1 being an isocyanate derived fluorosilane wherein:

a=1, x=1, and l=1;

Z 2 is —NH— and Z 1 is from the group consisting of —O—, and —S—;

said isocyanate derived fluorosilane represented by the formula:

(L) 3 -Si—(CH 2 ) n —Z 1 —C(X 1 )—Z 2 -Q 1 -R f ;

provided that when Z 1 is O, Q 1 is a C 2 -C 12 hydrocarbylene interrupted by at least one divalent moiety chosen from the group consisting of —S—, —S(O)—, —S(O) 2 —, —NH—S(O) 2 —, —N(CH) 3 S(O) 2 —, and

3. The isocyanate derived fluorosilane of claim 2 being a carbamate fluorosilane wherein:

Z 1 is —O— and Z 2 is —NH—; and

X 1 is O;

said carbamate represented by the formulae:

(L) 3 Si—(CH 2 ) n —O—C(O)—NH-Q 1 -R f

wherein:

Q 1 is a C 2 -C 12 hydrocarbylene optionally interrupted by at least one divalent moiety chosen from the group consisting of —NH—C(O)—NH—, —NH—C(S)—NH—, —S—, —S(O)—, —S(O) 2 —, —(R 1 )N—S(O) 2 —,

4. The carbamate fluorosilane of claim 3 wherein R f is chosen from a C 2 -C 12 perfluoroalkyl and Q 1 is independently chosen from the group consisting of a C 2 -C 12 hydrocarbylene interrupted by at least one divalent moiety chosen from the group consisting of —S—, —S(O)—, —S(O) 2 —, and —O—C(O)—NH—.

5. The carbamate fluorosilane of claim 3 wherein R f is chosen from a C 2 -C 12 perfluoroalkyl provided that: i) one fluorine atom of the perfluoroalkyl is replaced by hydrogen, and/or ii) the perfluoroalkyl is interrupted by at least one oxygen, methylene, or ethylene; Q is chosen from the group consisting of a C 2 -C 12 hydrocarbylene optionally interrupted by at least one divalent organic group.

6. The isocyanate derived fluorosilane of claim 2 being a thiolcarbamate fluorosilane wherein:

Z 1 is —S— and Z 2 is —NH—; and

X 1 is O;

said thiolcarbamate fluorosilane represented by the formulae:

(L) 3 Si—(CH 2 ) n —S—C(O)—NH-Q 1 -R f

wherein:

Q 1 is independently chosen from the group consisting of a C 2 -C 12 hydrocarbylene optionally interrupted by at least one divalent moiety chosen from the group consisting of —S—, —S(O)—, —S(O) 2 —, —N(R 1 )—C(O)—, —C(O)—N(R 1 )—, —(R 1 )N—S(O) 2 —, and

7. The thiolcarbamate fluorosilane of claim 6 wherein R f is chosen from a C 2 -C 12 perfluoroalkyl and Q 1 is independently chosen from the group consisting of a C 2 -C 12 hydrocarbylene interrupted by at least one divalent moiety chosen from the group consisting of —S—, —S(O)—, —S(O) 2 —, and —O—C(O)—NH —.

8. The thiolcarbamate fluorosilane of claim 6 wherein R f is chosen from a C 2 -C 12 perfluoroalkyl provided that: i) one fluorine atom of the perfluoroalkyl is replaced by hydrogen, and/or ii) the perfluoroalkyl is interrupted by at least one oxygen, methylene, or ethylene; Q is chosen from the group consisting of a C 2 -C 12 hydrocarbylene optionally interrupted by at least one divalent organic group.