Fluoropolyether group-containing silane compound
A fluoropolyether group-containing silane compound of the formula (1a) or the formula (1b), the symbols of which are as defined herein: R F1 —X A —R Si (1a) R Si —X A —R F2 —X A —R Si (1b).
1. A fluoropolyether group-containing silane compound of the formula (Ia) or the formula (Ib):
R F1 —X A —R Si (1a)
R Si —X A —R F2 —X A —R Si (1b)
wherein
R F1 is each independently at each occurrence Rf 1 —R F —O q —;
R F2 is —Rf 2 p —R F —O g —;
Rf 1 is each independently at each occurrence 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 divalent fluoropolyether group;
p is 0 or 1;
q is each independently at each occurrence 0 or 1;
X A is each independently at each occurrence —X 1 r1 —W—X 2 r2 —;
X 1 is a divalent organic group;
W is a 5-membered heterocyclic ring having two or more heteroatoms;
at least one of the heteroatoms is a N atom;
X 2 is a divalent organic group;
r1 is 0 or 1;
r2 is 0 or 1;
R Si is each independently at each occurrence represented by the formula (S1):
-A 1 (Z 1 —Si R 11 n R 12 3-n ) m R e 3-m (S1)
A 1 is C or Si;
Z 1 is each independently at each occurrence a divalent organic group;
R 11 is each independently at each occurrence a hydroxyl group or a hydrolyzable group;
R 12 is each independently at each occurrence a hydrogen atom or a monovalent organic group;
n is each independently at each occurrence an integer of 1 to 3;
R e is each independently at each occurrence a hydrogen atom, a hydroxyl group, or a monovalent organic group; and
m is each independently at each occurrence 2 or 3.
2. The fluoropolyether group-containing silane compound according to claim 1 , wherein R F is each independently at each occurrence a group represented by the formula:
—(OC 6 F 12 ) a —(OC 5 F 10 ) b —(OC 4 F 8 ) c —(OC 3 F 6 ) d —(OC 2 F 4 ) e —(OCF 2 ) f —
wherein
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 1 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.
3. The fluoropolyether group-containing silane compound according to claim 1 , wherein R F is each independently at each occurrence represented by the following formula (f1), (f2), (f3), (f4), or (f5):
—(OC 3 F 6 ) d — (f1)
wherein d is an integer of 1 to 200;
—(OC 4 F 8 ) c —(OC 3 F 6 ) d —(OC 2 F 4 ) e —(OCF 2 ) f — (f2)
wherein c and d are each independently an integer of 0 or more and 30 or less, e and f are each independently an integer of 1 or more and 200 or less;
the sum of c, d, e, and f is 2 or more; and
the occurrence order of the respective repeating units enclosed in parentheses provided with a subscript c, d, e, or f is not limited in the formula;
—(R 6 —R 7 ) g — (f3)
wherein R 6 is OCF 2 or OC 2 F 4 ;
R 7 is a group selected from OC 2 F 4 , OC 3 F 6 , OC 4 F 8 , OC 5 F 10 , and OC 6 F 12 , or a combination of two or three groups independently selected from these groups; and
g is an integer of 2 to 100;
—(OC 6 F 12 ) a —(OC 5 F 10 ) b —(OC 4 F 8 ) c —(OC 3 F 6 ) d —(OC 2 F 4 ) e —(OCF 2 ) f — (f4)
wherein e is an integer of 1 or more and 200 or less, a, b, c, d, and f are each independently an integer of 0 or more and 200 or less, the sum of a, b, c, d, e, and f is at least 1, 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; and
—(OC 6 F 12 ) a —(OC 5 F 10 ) b —(OC 4 F 8 ) c —(OC 3 F 6 ) d —(OC 2 F 4 ) e —(OCF 2 ) f — (f5)
wherein f is an integer of 1 or more and 200 or less, a, b, c, d, and e are each independently an integer of 0 or more and 200 or less, the sum of a, b, c, d, e, and f is at least 1, 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.
4. The fluoropolyether group-containing silane compound according to claim 1 , wherein the two or more heteroatoms are two or more N atoms.
5. The fluoropolyether group-containing silane compound according to claim 1 , wherein the two or more heteroatoms are at least one N atom and at least one heteroatom other than N atom.
6. The fluoropolyether group-containing silane compound according to claim 5 , wherein the at least one heteroatom other than N atom is O atom.
7. The fluoropolyether group-containing silane compound according to claim 1 , wherein X 1 and X 2 are each independently at each occurrence a divalent organic group represented by —(R 51 ) p5 —(X 51 ) q5 —:
wherein
R 51 represents —(CH 2 ) s5 —;
s5 is an integer of 1 to 20;
X 51 represents-(X 52 ) l5 —;
X 52 each independently at each occurrence represents a group selected from the group consisting of —O—, —C(O)O—, —CONR 54 —, —O—CONR 54 —, and —NR 54 —;
R 54 each independently at each occurrence represents a hydrogen atom, a phenyl group, or a C 1-6 alkyl group;
l5 is an integer of 1 to 10;
p5 is 0 or 1; and
q5 is 0 or 1, provided that the occurrence order of respective repeating units enclosed in parentheses provided with p5 or q5 is not limited.
8. The fluoropolyether group-containing silane compound according to claim 1 , wherein X 1 and X 2 are each independently at each occurrence a C 1-20 alkylene group.
9. The fluoropolyether group-containing silane compound according to claim 1 , wherein r1 is 0 and r2 is 1.
10. The fluoropolyether group-containing silane compound according to claim 1 , wherein r1 is 0, r2 is 1, X 2 is —(CH 2 ) s5 —, and s5 is an integer of 1 to 3.
11. The fluoropolyether group-containing silane compound according to claim 1 , wherein Z 1 is
a C 1-6 alkylene group,
—(CH 2 ) z1 —O—(CH 2 ) z2 , or
—(CH 2 ) z3 -phenylene-(CH 2 ) z4 —,
wherein z1 to z4 are each independently an integer of 0 to 6.
12. The fluoropolyether group-containing silane compound according to claim 1 , wherein m is 3.
13. The fluoropolyether group-containing silane compound according to claim 1 , wherein n is 3.