Anti-fingerprint coating composition and film using the same

Patent metadata

Field	Value
Publication number	US-9249338-B2
Application number	US-201213560714-A
Country	US
Kind code	B2
Filing date	Jul 27, 2012
Priority date	Jul 27, 2011
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

Disclosed herein is an anti-fingerprint coating composition, a coating composition for forming thin films that prevents fingerprints adhered to displays or touch panels from being remarkably visible and exhibits superior durability and slip properties, and a method for preparing the same.
The anti-fingerprint coating composition is prepared by mixing a silane compound having an alkyl group with distilled water or acid.

First claim

What is claimed is:

1. A coating composition comprising a silane oligomer having: an R 1 group represented by Formula 1 of [R a O—(CH 2 CH 2 O) p —R b —] wherein R a is selected from the group consisting of hydrogen and an alkyl group having 1 to 3 carbon atoms; R b is selected from the group consisting of an alkyl group having 5 to 20 carbon atoms, an alkenyl group having 5 to 20 carbon atoms, an alkynyl group having 5 to 20 carbon atoms, an aryl group having 5 to 20 carbon atoms, an arylalkyl group having 6 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms and a heteroalkyl group having 5 to 20 carbon atoms; and p is an integer of 1 to 12; and an R 2 group represented by Formula 2 of (R c ) q wherein R c is a cycloalkyl group having 3 to 20 carbon atoms; and q is an integer of 1 to 3,
wherein at least one reactive group bonded to a silicon of the silane oligomer is substituted by a hydroxyl group (—OH).

2. The coating composition according to claim 1 , wherein the R 1 group is at least one selected from the group consisting of a methoxyethoxyundecyl group, a methoxytriglycoloxy-undecyl group, a 3-methoxyethoxy-4-acetoxycyclohexylethyl group, a 16-(2-methoxy-ethoxy)hexadecyl group and derivatives thereof.

3. The coating composition according to claim 1 , wherein the R 2 group is at least one selected from the group consisting of a 3-cyclopentadienylpropyl group, a dicyclopentyl group, a cyclopentyl group, a cyclohexyl group, a cyclooctyl group and derivatives thereof.

4. The coating composition according to claim 1 , wherein the silane oligomer has a molecular weight of about 100 to about 10000.

5. The coating composition according to claim 1 , wherein the silane oligomer has a structure of Formula 3 below,

wherein m and n are each independently integers of 1 to 10.

6. An anti-fingerprint thin film formed by coating the coating composition according to claim 1 on a surface of a substrate.

7. The anti-fingerprint thin film according to claim 6 , wherein the thin film formed using the silane oligomer has a contact angle to water of about 60 to about 80 degrees and a contact angle to diiodomethane of about 0 to about 45 degrees.

8. A coating composition comprising:
45 to 49.5% by weight of a silane compound represented by Formula 1 of [R a O—(CH 2 CH 2 O) p —R b —] wherein R a is selected from the group consisting of hydrogen and an alkyl group having 1 to 3 carbon atoms; R b is selected from the group consisting of an alkyl group having 5 to 20 carbon atoms, an alkenyl group having 5 to 20 carbon atoms, an alkynyl group having 5 to 20 carbon atoms, an aryl group having 5 to 20 carbon atoms, an arylalkyl group having 6 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms and a heteroalkyl group having 5 to 20 carbon atoms; and p is an integer of 1 to 12;
45 to 49.5% by weight of the silane compound having an R 2 group represented by Formula 2 of (R c ) q wherein R c is a cycloalkyl group having 3 to 20 carbon atoms; and q is an integer of 1 to 3; and
1 to 10% by weight of H 2 O or acid,
wherein at least one reactive group bonded to a silicon of the silane oligomer is substituted by a hydroxyl group (—OH).

9. The coating composition according to claim 8 , wherein Formula 1 is at least one selected from the group consisting of a methoxyethoxyundecyl group, a methoxytriglycoloxy-undecyl group, a 3-methoxyethoxy-4-acetoxycyclohexylethyl group, a 16-(2-methoxy-ethoxy)hexadecyl group and derivatives thereof.

10. The coating composition according to claim 8 , wherein the R 2 group is at least one selected from the group consisting of a 3-cyclopentadienylpropyl group, a dicyclopentyl group, a cyclopentyl group, a cyclohexyl group, a cyclooctyl group and derivatives thereof.

11. The coating composition according to claim 8 , wherein the coating composition has a molecular weight of about 100 to about 10000.

12. An anti-fingerprint thin film formed by coating the coating composition according to claim 8 on a surface of a substrate.

13. The anti-fingerprint thin film according to claim 12 , wherein the anti-fingerprint thin film has a contact angle to water of about 60 to about 80 degrees and a contact angle to diiodomethane of about 0 to about 45 degrees.

14. An electronic product having a display provided with an anti-fingerprint thin film, wherein the anti-fingerprint thin film has a contact angle to water of about 60 to about 80 degrees and a contact angle to diiodomethane of about 0 to about 45 degrees;
wherein the anti-fingerprint thin film includes a silane oligomer having:
an R 1 group represented by Formula 1 of [R a O—(CH 2 CH 2 O) p —R b —] wherein R a is selected from the group consisting of hydrogen and an alkyl group having 1 to 3 carbon atoms; R b is selected from the group consisting of an alkyl group having 5 to 20 carbon atoms, an alkenyl group having 5 to 20 carbon atoms, an alkynyl group having 5 to 20 carbon atoms, an aryl group having 5 to 20 carbon atoms, an arylalkyl group having 6 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms and a heteroalkyl group having 5 to 20 carbon atoms; and p is an integer of 1 to 12; and an R 2 group represented by Formula 2 of (R c ) q wherein R c is a cycloalkyl group having 3 to 20 carbon atoms; and q is an integer of 1 to 3,
wherein at least one reactive group bonded to a silicon of the silane oligomer is substituted by a hydroxyl group (—OH).

15. The electronic product according to the claim 14 , wherein the R 1 group is at least one selected from the group consisting of a methoxyethoxyundecyl group, a ethoxytriglycoloxy-undecyl group, a 3-methoxyethoxy-4-acetoxycyclohexylethyl group, a 16-(2-methoxy-ethoxy)hexadecyl group and derivatives thereof.

16. The electronic product according to the claim 14 , wherein the R 2 group is at least one selected from the group consisting of a 3-cyclopentadienylpropyl group, a dicyclopentyl group, a cyclopentyl group, a cyclohexyl group, a cyclooctyl group and derivatives thereof.

17. The electronic product according to the claim 14 , wherein the silane oligomer has a structure of Formula 3 below,

wherein m and n are each independently integers of 1 to 10.

Assignees

• Park Byung Ha
• Hwang In Oh
• Ham Cheol
• Song Ki Yong
• Park Soo-Jin
• Park Sung Jun
• Hwang Woo Taek
• Kim Myung Gon
• Oh Seung Taek
• Saher Saim
• Samsung Electronics Co Ltd

Inventors

• Park Byung Ha
• Hwang In Oh
• Ham Cheol
• Song Ki Yong
• Park Soo-Jin
• Park Sung Jun
• Hwang Woo Taek
• Kim Myung Gon
• Oh Seung Taek
• Saher Saim

Classifications

• C09D183/04 Primary

  Polysiloxanes · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• C09D5/1675

  Polyorganosiloxane-containing compositions · CPC title

• G06F3/03547

  Touch pads, in which fingers can move on a surface · CPC title