Water/oil-repellent coating composition

Patent metadata

Field	Value
Publication number	US-2017313902-A1
Application number	US-201515522584-A
Country	US
Kind code	A1
Filing date	Oct 27, 2015
Priority date	Oct 31, 2014
Publication date	Nov 2, 2017
Grant date	—

Abstract

The object of the present invention is to provide a water/oil-repellent coating composition for forming a film capable of attaining both water/oil repellency and abrasion resistance. The water/oil-repellent coating composition comprises: an organosilicon compound (A) and a metal compound (B), wherein at least one first hydrocarbon chain-containing group and at least one hydrolyzable group are bonded to a silicon atom in the organosilicon compound (A), where in at least one hydrolyzable group is bonded to a metal atom in the metal compound (B), wherein a second hydrocarbon chain-containing group having a length shorter than the length of the first hydrocarbon chain-containing group may be bonded to the metal atom in the metal compound (B), and wherein a molar ratio of the metal compound B) to the organosilicon compound (A) as metal compound (B)/organosilicon compound (A) is not less than 18 and not more than 48.

First claim

1 . A water/oil-repellent coating composition comprising an organosilicon compound (A) and a metal compound (B),
wherein at least one first hydrocarbon chain-containing group and at least one hydrolyzable group are bonded to a silicon atom in the organosilicon compound (A), wherein at least one hydrolyzable group is bonded to a metal atom in the metal compound (B), wherein a second hydrocarbon chain-containing group having a length shorter than the length of the first hydrocarbon chain-containing group may be bonded to the metal atom in the metal compound (B), and wherein a molar ratio of the metal compound (B) to the organosilicon compound (A) as metal compound (B)/organosilicon compound (A) is not less than 18 and not more than 48.

2 . The water/oil-repellent coating composition according to claim 1 , wherein the molar ratio of the metal compound (B) to the organosilicon compound (A) as metal compound (B)/organosilicon compound (A) is not less than 18 and not more than 36.

3 . The water/oil-repellent coating composition according to claim 1 , further comprising a solvent (C).

4 . The water/oil-repellent coating composition according to claim 3 , wherein the solvent (C) includes an alcohol-based solvent.

5 . The water/oil-repellent coating composition according to claim 1 , wherein the organosilicon compound (A) is represented by formula (I) below:

wherein R a represents the first hydrocarbon group,
each of A a1 independently represents a hydrolyzable group,
Z a1 represents the first hydrocarbon chain-containing group, the second hydrocarbon chain-containing group having a length shorter than a length of the first hydrocarbon chain-containing group, or a hydrolyzable group,
R a and Z a1 may be the same or different when Z a1 is the first hydrocarbon chain-containing group,
Z a1 and A a1 may be the same or different when Z a1 is the hydrolyzable group, and
R a and Z a1 may be the same or different when the water/oil-repellent coating composition comprises a plural number of formulae (I).

6 . The water/oil-repellent coating composition according to claim 1 , wherein the metal compound (B) is represented by formula (II) below:
[Chemical Formula 2] M(R b1 )(A b1 ) m   (II)
wherein R b1 represents the second hydrocarbon group or the hydrolyzable group, each of A b1 independently represents a hydrolyzable group, M represents Al, Fe, In, Ge, Hf, Si, Ti, Sn, Zr or Ta, and m represents an integer of 1 to 4 according to a kind of metal atom.

7 . The water/oil-repellent coating composition according to claim 6 , wherein R b1 and A b1 represent the same group in the formula (II).

8 . The water/oil-repellent coating composition according to claim 6 , wherein M represents Si in the formula (II).

9 . The water/oil-repellent coating composition according to claim 4 , wherein the metal compound (B) is represented by formula (II) below:
[Chemical Formula 2] M(R b1 )(A b1 ) m wherein R b1 represents the second hydrocarbon group or the hydrolyzable group, each of A b1 independently represents a hydrolyzable group, M represents Al, Fe, In, Ge, Hf, Si, Ti, Sn, Zr or Ta, and m represents an integer of 1 to 4 according to a kind of metal atom.

10 . The water/oil-repellent coating composition according to claim 9 , wherein R b1 and A b1 represent the same group in the formula (II).

11 . The water/oil-repellent coating composition according to claim 10 , wherein M represents Si in the formula (II).

Assignees

• Sumitomo Chemical Co
• Nat Inst Advanced Ind Science & Tech

Inventors

• Shimazaki Yasuharu
• Sakurai Sayaka
• Miyamoto Tomonori
• Hozumi Atsushi
• Urata Chihiro

Classifications

• C08G77/58

  Metal-containing linkages · CPC title

• C09D183/14

  in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms (C09D183/10 takes precedence) · CPC title

• C09D7/20

  Diluents or solvents · CPC title

• C09D7/63

  organic · CPC title

• C09D7/40 Primary

  Additives · CPC title