Fluoropolyether group containing compound

1. A fluoropolyether group-containing compound of the following formula (1) or (2):

R F1 —X—R Si   (1)

R Si —X—R F2 —X—R Si   (2)

wherein

R F1 is Rf 1 —R F —O q —;

R F2 is —Rf 2 p —R F —O q —;

Rf 1 is a C 1-16 alkyl group optionally substituted with one or more fluorine atoms;

Rf 2 is a C 1-6 alkylene group optionally substituted with one or more fluorine atoms;

R F is each independently at each occurrence a group represented by formula:

—(OC 6 F 12 ) a —(OC 5 F 10 ) b —(OC 4 F 8 ) c —(OC 3 R Fa 6 ) d —(OC 2 F 4 ) e —(OCF 2 ) f —;

a, b, c, d, e, and f are each independently an integer of 0 to 200, the sum of a, b, c, d, e, and f is one or more, and the occurrence order of the respective repeating units enclosed in parentheses provided with a, b, c, d, e, or f is not limited in the formula;

R Fa is each independently at each occurrence a hydrogen atom, a fluorine atom, or a chlorine atom;

p is 0 or 1;

q is independently 0 or 1;

X is a group represented by the following formula:

R X1 is each independently at each occurrence a C 1-6 alkylene group;

R X2 is each independently at each occurrence a C 1-6 alkylene group optionally substituted with a C 1-6 alkyl group or cyclic alkyl group optionally containing one or more nitrogen atoms, oxygen atoms, sulfur atoms, or silicon atoms, or with a perfluoroalkyl group;

R y is each independently at each occurrence a hydrogen atom, a C 1-6 alkyl group, or a phenyl group;

X 11 is each independently at each occurrence a single bond, an oxygen atom, or a divalent organic group;

R Si is each independently at each occurrence represented by the following formula (S1):

—CR d1 k2 R e1 12 R f1 m2   (S1);

R d1 is each independently at each occurrence —Z 2 —CR 31 p2 R 32 q2 R 33 r2 ;

Z 2 is each independently at each occurrence a single bond, an oxygen atom, or a divalent organic group;

R 31 is each independently at each occurrence —Z 2′ —CR 32′ q2′ R 33′ r2′ ;

Z 2′ is each independently at each occurrence a single bond, an oxygen atom, or a divalent organic group;

R 32′ is each independently at each occurrence —Z 3 —SiR 34 n2 R 35 3-n2 ;

R 33′ is each independently at each occurrence a hydrogen atom, a hydroxyl group, or a monovalent organic group;

q2′ is each independently at each occurrence an integer of 0 to 3;

r2′ is each independently at each occurrence an integer of 0 to 3;

Z 3 is each independently at each occurrence a single bond, an oxygen atom, or a divalent organic group;

R 34 is each independently at each occurrence a hydroxyl group or a hydrolyzable group;

R 35 is each independently at each occurrence a hydrogen atom or a monovalent organic group;

n2 is each independently at each occurrence an integer of 1 to 3;

R 32 is each independently at each occurrence —Z 3 —SiR 34 n2 R 35 3-n2 ;

R 33 is each independently at each occurrence a hydrogen atom, a hydroxyl group, or a monovalent organic group;

p2 is each independently at each occurrence an integer of 0 to 3;

q2 is each independently at each occurrence an integer of 0 to 3;

r2 is each independently at each occurrence an integer of 0 to 3;

R e1 is each independently at each occurrence —Z 3 —SiR 34 n2 R 35 3-n2 ;

R f1 is each independently at each occurrence a hydrogen atom, a hydroxyl group, or a monovalent organic group;

k2 is each independently at each occurrence an integer of 0 to 2;

l2 is each independently at each occurrence an integer of 1 to 3; and

m2 is each independently at each occurrence an integer of 0 to 2.

2. The fluoropolyether group-containing compound according to claim 1 , wherein X 11 is a divalent organic group.

3. The fluoropolyether group-containing compound according to claim 1 , wherein X 11 is a C 1-6 alkylene group.

4. The fluoropolyether group-containing compound according to claim 1 , wherein n2 is 2 or 3.

5. The fluoropolyether group-containing compound according to claim 1 , wherein k2 is 0 and 12 is 3.

6. The fluoropolyether group-containing compound according to claim 1 , wherein R y is a hydrogen atom or a C 1-6 alkyl group.

7. The fluoropolyether group-containing compound according to claim 1 , wherein R Fa is a fluorine atom.