SURFACE-TREATING AGENT AND ARTICLE COMPRISING LAYER FORMED FROM SURFACE-TREATING AGENT

1 - 20 . (canceled)

21 . An article comprising a base material and a layer formed from a compound represented by the following formula (1) or from a surface-treating agent comprising the compound:

wherein

X 1 to X 5 each independently represent a hydrogen atom, a halogen atom, a hydrocarbon group, a nitro group, a hydroxy group, or an Rf group, provided that at least one of X 1 to X 5 is the Rf group;

the Rf group represents R 15 —R 16 —;

R 15 represents a fluorine-containing hydrocarbon group optionally having an ether bond;

R 16 represents a single bond or a divalent organic group;

R 1 each independently in each occurrence represents a hydroxy group, a hydrolyzable group, or a halogen atom;

R 2 each independently in each occurrence represents a hydrogen atom, an alkyl group, or an aryl group; and

n is an integer of 1 to 3.

22 . The article according to claim 21 , wherein X 1 is the Rf group.

23 . The article according to claim 21 , wherein X 1 is the Rf group, and X 2 to X 5 are each a hydrogen atom.

24 . The article according to claim 21 , wherein R 15 is a perfluorohydrocarbon group optionally having an ether bond.

25 . The article according to claim 21 , wherein R 15 is F—C p F 2p —, wherein p is an integer of 1 to 100, and R 16 is a single bond.

26 . The article according to claim 21 , wherein R 15 is a group represented by the following formula:

R 3 —PFPE-

wherein

R 3 independently in each occurrence represents an alkyl group having 1 to 16 carbon atoms optionally substituted with one or more fluorine atoms; and

PFPE is a group represented by —(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 or more and 200 or less, provided that the summation of a, b, c, d, e, and f is at least 1, and the order of the repeating units with parentheses accompanied by a subscript of a, b, c, d, e, or f is arbitrary in the formula, and

R 16 is a single bond or an alkyl group having 1-4 carbon atoms.

27 . The article according to claim 21 , further comprising a binder layer between the base material and the layer formed from the compound represented by the formula (1) or from the surface-treating agent comprising the compound, wherein the binder layer is formed from a silicon-containing compound.

28 . The article according to claim 27 , wherein the silicon-containing compound is one or more compounds selected from the group consisting of a Si—H compound, a Si—N compound, a Si—O compound, halogenosilane, a Si—(C) 4 compound, a Si—Si compound, vinylsilane, allylsilane, and ethynylsilane.

29 . The article according to claim 27 , wherein the silicon-containing compound is at least one compound represented by formula (3) or formula (4):

SiR 5 4   (3)

wherein

R 5 each independently represents a halogen atom or a hydrolyzable group,

Si y O z R 6 4y−2z   (4)

wherein

R 6 each independently represents a halogen atom or a hydrolyzable group;

y is 2 or more;

z is 1 or more; and

4y−2z is more than 0.

30 . The article according to claim 21 , wherein the surface-treating agent further comprises a silicon-containing compound.

31 . The article according to claim 21 , wherein the base material is glass, sapphire glass, resin, metal, ceramic, semiconductor, fiber, fur, leather, or wood.

32 . The article according to claim 21 , which is an optical member or a building member.

33 . A surface-treating agent comprising:

(A) a compound represented by the following formula (1):

wherein

X 1 to X 5 each independently represent a hydrogen atom, a halogen atom, a hydrocarbon group, a nitro group, a hydroxy group, or an Rf group, provided that at least one of X 1 to X 5 is the Rf group;

the Rf group represents R 15 —R 16 —;

R 15 represents a fluorine-containing hydrocarbon group optionally having an ether bond;

R 16 represents a single bond or a divalent organic group;

R 1 each independently in each occurrence represents a hydroxy group, a hydrolyzable group, or a halogen atom;

R 2 each independently in each occurrence represents a hydrogen atom, an alkyl group, or an aryl group; and

n is an integer of 1 to 3; and

(B) one or more additional components selected from a silicon-containing compound, a fluorine-containing oil, a silicone oil, and a solvent.

34 . The surface-treating agent according to claim 33 , wherein the additional component includes a silicon-containing compound.

35 . The surface-treating agent according to claim 33 , wherein the silicon-containing compound is one or more compounds selected from the group consisting of a Si—H compound, a Si—N compound, a Si—O compound, halogenosilane, a Si—(C) 4 compound, a Si—Si compound, vinylsilane, allylsilane, and ethynylsilane.

36 . The surface-treating agent according to claim 33 , wherein the silicon-containing compound is at least one compound represented by formula (3) or formula (4):

SiR 5 4   (3)

wherein

R 5 each independently represents a halogen atom or a hydrolyzable group,

Si y O z R 6 4y−2z   (4)

wherein

R 6 each independently represents a halogen atom or a hydrolyzable group;

y is 2 or more;

z is 1 or more; and

4y−2z is more than 0.

37 . The surface-treating agent according to claim 33 , wherein the fluorine-containing oil is one or more compounds represented by the following formula (5):

R 21 —(OC 4 F 8 ) a′ —(OC 3 F 6 ) b′ —(OC 2 F 4 ) c′ —(OCF 2 ) d′ —R 22   (5)

wherein

R 21 represents a C 1-16 alkyl group optionally substituted with one or more fluorine atoms;

R 22 represents a C 1-16 alkyl group optionally substituted with one or more fluorine atoms;

a′, b′, c′, and d′ are each independently an integer of 0 or more and 300 or less, provided that the summation of a′, b′, c′, and d′ is at least 1, and the order of the repeating units with parentheses accompanied by a subscript of a′, b′, c′, or d′ is arbitrary in the formula.

38 . The surface-treating agent according to claim 33 , wherein the silicone oil is a linear or cyclic silicone oil having 2,000 or less siloxane bonds.

39 . The surface-treating agent according to claim 33 , wherein the solvent is one or more solvents selected from a hydrocarbon solvent, a chlorinated hydrocarbon solvent, an ether-based solvent, an ester-based solvent, a propylene glycol-based solvent, a ketone-based solvent, an alcohol-based solvent, an aromatic hydrocarbon, a C 5-12 perfluoroaliphatic hydrocarbon, a polyfluoroaromatic hydrocarbon, a polyfluoroaliphatic hydrocarbon, a hydrofluoroether, a hydrochlorofluorocarbon, and a cellosolve-based solvent.

40 . The surface-treating agent according to claim 33 , which is used as an antifouling coating agent or a water-proof coating agent.