Sulfonate-functional coatings and methods

Patent metadata

Field	Value
Publication number	US-9340683-B2
Application number	US-201013511714-A
Country	US
Kind code	B2
Filing date	Dec 17, 2010
Priority date	Dec 17, 2009
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

A coating composition is described comprising:
(i) a zwitterionic compound comprising sulfonate-functional groups and alkoxysilane groups and/or silanol-functional groups; (ii) alcohol and/or water; and (iii) a tetraalkoxysilane, oligomers thereof, lithium silicate, sodium silicate, potassium silicate, silica, or combinations thereof, along with coated articles and methods of making and using.

First claim

What is claimed is:

1. A coating composition comprising:
(i) a zwitterionic compound comprising sulfonate-functional groups and alkoxysilane groups and/or silanol-functional groups wherein the zwitterionic compound is of the following Formula (II):
(R 1 O) p —Si(R 2 ) q —W—N + (R 3 )(R 4 )—(CH 2 ) m —SO 3 −   (II)

wherein:
each R 1 is independently a hydrogen, methyl group, or ethyl group;
each R 2 is independently a methyl group or an ethyl group;
R 3 and R 4 are (a) independently a saturated or unsaturated, straight chain, branched, or cyclic organic group, (b) joined together to form a saturated or unsaturated, straight chain or branched ring or (c) joined together along with W to form a saturated or unsaturated, straight chain or branched ring;
W is an organic linking group;
p is an integer of 1 to 3 and m is an integer of 1 to 4;
q is 0 or 1; and
p+q=3;
(ii) alcohol and/or water; and
(iii) a tetraalkoxysilane, oligomers thereof, lithium silicate, sodium silicate, potassium silicate, silica, or combinations thereof.

2. The coating composition of claim 1 , wherein the coating composition comprises no greater than 20 wt % of the zwitterionic compound.

3. The coating composition of claim 1 , wherein the coating composition comprises 0.1 to 20 wt % of the tetraalkoxysilane, oligomers thereof, lithium silicate, sodium silicate, potassium silicate, silica, or combinations thereof.

4. The coating composition of claim 1 , wherein the zwitterionic compound comprises at least one of:

the coating composition comprising:
(i) a zwitterionic compound comprising sulfonate-functional groups and alkoxysilane groups and/or silanol-functional groups wherein the zwitterionic compound is of the following Formula (II)
(R 1 O) p —Si(R 2 ) q —W—N + (R 3 )(R 4 )—(CH 2 ) m —SO 3 −   (II)

wherein:
each R 1 is independently a hydrogen, methyl group, or ethyl group;
each R 2 is independently a methyl group or an ethyl group;
each R 3 and R 4 is (a) independently a saturated or unsaturated, straight chain, branched, or cyclic organic group, (b) joined together to form a saturated or unsaturated, straight chain or branched ring or (c) joined together along with W to form a saturated or unsaturated, straight chain or branched ring;
W is an organic linking group;
p and m are integers of 1 to 3;
q is 0 or 1; and
p+q=3.

5. A coated article comprising a substrate surface, a primer coating disposed on the substrate surface, and a sulfonate-functional coating bonded to the primer coating through siloxane bonds, wherein the sulfonate-functional coating is derived from a coating composition and wherein the primer coating provides —OH groups on the surface of the substrate, the coating composition comprising:
(i) a zwitterionic compound comprising sulfonate-functional groups and alkoxysilane groups and/or silanol-functional groups wherein the zwitterionic compound is of the following Formula (II):
(R 1 O) p —Si(R 2 ) q —W—N + (R 3 )(R 4 )—(CH 2 ) m —SO 3 −   (II)

wherein:
each R 1 is independently a hydrogen, methyl group, or ethyl group;
each R 2 is independently a methyl group or an ethyl group;
each R 3 and R 4 is (a) independently a saturated or unsaturated, straight chain, branched, or cyclic organic group, (b) joined together to form a saturated or unsaturated, straight chain or branched ring or (c) joined together along with W to form a saturated or unsaturated, straight chain or branched ring;
W is an organic linking group;
p is an integer of 1 to 3 and m is an integer of 1 to 4;
q is 0 or 1; and
p+q=3;
(ii) alcohol and/or water; and
(iii) a tetraalkoxysilane, oligomers thereof, lithium silicate, sodium silicate, potassium silicate, silica, or combinations thereof.

6. A coated article comprising a substrate surface, a nanoparticle-containing primer disposed on the substrate surface, and a sulfonate-functional zwitterionic coating bonded to the nanoparticle-containing primer through siloxane bonds, wherein the nanoparticle-containing primer comprises agglomerates of silica nanoparticles having average particle diameters of 40 nanometers or less, said agglomerates comprising a three-dimensional porous network of silica nanoparticles, and the silica nanoparticles are bonded to adjacent silica nanoparticles wherein the sulfonate-functional coating is derived from a coating composition, the coating composition comprising:
(i) a zwitterionic compound comprising sulfonate-functional groups and alkoxysilane groups and/or silanol-functional groups wherein the zwitterionic compound is of the following Formula (II):
(R 1 O) p —Si(R 2 ) q —W—N + (R 3 )(R 4 )—(CH 2 ) m —SO 3 −   (II)

wherein:
each R 1 is independently a hydrogen, methyl group, or ethyl group;
each R 2 is independently a methyl group or an ethyl group;
each R 3 and R 4 is (a) independently a saturated or unsaturated, straight chain, branched, or cyclic organic group, (b) joined together to form a saturated or unsaturated, straight chain or branched ring or (c) joined together along with W to form a saturated or unsaturated, straight chain or branched ring;
W is an organic linking group;
p is an integer of 1 to 3 and m is an integer of 1 to 4;
q is 0 or 1; and
p+q=3;
(ii) alcohol and/or water; and
(iii) a tetraalkoxysilane, oligomers thereof, lithium silicate, sodium silicate, potassium silicate, silica, or combinations thereof.

7. A method of cleaning a surface, the method comprising;
wiping the sulfonate-functional coating of a coated article having fingerprints on the sulfonate-functional coating; and
removing the fingerprints, the coated article comprising a substrate surface, a nanoparticle-containing primer disposed on the substrate surface, and a sulfonate-functional zwitterionic coating bonded to the nanoparticle-containing primer through siloxane bonds, wherein the nanoparticle-containing primer comprises agglomerates of silica nanoparticles having average particle diameters of 40 nanometers or less, said agglomerates comprising a three-dimensional porous network of silica nanoparticles, and the silica nanoparticles are bonded to adjacent silica nanoparticles wherein the sulfonate-functional coating is derived from a coating composition, the coating composition comprising:
(i) a zwitterionic compound comprising sulfonate-functional groups and alkoxysilane groups and/or silanol-functional groups wherein the zwitterionic compound is of the following Formula (II):
(R 1 O) p —Si(R 2 ) q —W—N + (R 3 )(R 4 )—(CH 2 ) m —SO 3 −   (II)

wherein:
each R 1 is independently a hydrogen, methyl group, or ethyl group;
each R 2 is independently a methyl group or an ethyl group;
each R 3 and R 4 is (a) independently a saturated or unsaturated, straight chain, branched, or cyclic organic group, (b) joined together to form a saturated or unsaturated, straight chain or branched ring or (c) joined together along with W to form a saturated or unsaturated, straight chain or branched ring;
W is an organic linking group;
p is an integer of 1 to 3 and m is an integer of 1 to 4;
q is 0 or 1; and
p+q=3;
(ii) alcohol and/or water; and
(iii) a tetraalkoxysilane, oligomers thereof, lithium silicate, sodium silicate, potassium silicate, silica, or combinations thereof.

8. The method of claim 7 further comprising applying water and/or water vapor to the fingerprints and removing the fingerprints by wiping.

9. A method of treating a substrate surface, the method comprising:
applying a primer coating composition to the su

Assignees

• Jing Naiyong
• Riddle Justin A
• Chen Xue-Hua
• Olson Erik D
• 3M Innovative Properties Co

Inventors

• Jing Naiyong
• Riddle Justin A
• Chen Xue-Hua
• Olson Erik D

Classifications

• C09D1/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances · CPC title

• Y10T428/259

  Silicic material · CPC title

• C09D5/1625 Primary

  organic · CPC title

• C09D1/04

  with organic additives · CPC title

• C09D5/1693 Primary

  as part of a multilayer system · CPC title