Water/oil-repellent coating composition

Patent metadata

Field	Value
Publication number	US-10370546-B2
Application number	US-201515522584-A
Country	US
Kind code	B2
Filing date	Oct 27, 2015
Priority date	Oct 31, 2014
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

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

The invention claimed is:

1. A water/oil-repellent coating composition comprising an organosilicon compound (A), a metal compound (B), and a solvent (C),
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),
wherein the first hydrocarbon chain-containing group is a hydrocarbon group,
wherein the hydrocarbon group has a carbon number of not less than 7 and not more than 17,
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, and
wherein the solvent (C) is methanol, ethanol, propanol, or butanol.

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 , 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).

4. 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 chain-containing 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.

5. The water/oil-repellent coating composition according to claim 4 , wherein R b1 and A b1 represent the same group in the formula (II).

6. The water/oil-repellent coating composition according to claim 4 , wherein M represents Si in the formula (II).

Assignees

• Sumitomo Chemical Co

Inventors

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

Classifications

• C09D5/16 Primary

  Antifouling paints; Underwater paints · CPC title

• C09D183/04

  Polysiloxanes · CPC title

• C09D7/61

  inorganic · 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

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title