Coating compositions comprising polymerizable non-ionic surfactant exhibiting reduced fingerprint visibility

Patent metadata

Field	Value
Publication number	US-9701850-B2
Application number	US-201314394318-A
Country	US
Kind code	B2
Filing date	May 15, 2013
Priority date	Jun 19, 2012
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A coating composition is described comprising a polymerizable resin composition, a non-ionic unpolymerizable surfactant having an hydrophilic lipophilic balance ranging from 2 to 6, and a polymerizable surfactant. The surfactants are present at a concentration of greater than 10 wt-% solids. The non-ionic unpolymerizable surfactant and polymerizable surfactant are present at a weight ratio of less than 1.5:1. Also described are articles comprising the cured coating composition. The cured coating exhibits a property of an initially visible simulated fingerprint reducing in visibility within 60 minutes.

First claim

What is claimed is:

1. A coating composition comprising:
a polymerizable resin composition,
a non-ionic unpolymerizable surfactant having an hydrophilic-lipophilic balance ranging from 2 to 6, and a polymerizable surfactant comprising an alkyl or alkenyl group having at least 12 carbon atoms and a free-radically polymerizable group; wherein the surfactants are present at a concentration of greater than 10 wt.-% and no greater than 25 wt.-% solids of the coating composition and the non-ionic unpolymerizable surfactant and polymerizable surfactant are present at a weight ratio of less than 1.5 to 1; wherein the coating composition is a hardcoat after curing.

2. The coating composition of claim 1 wherein the polymerizable surfactant is derived from a non-ionic surfactant.

3. The coating composition of claim 1 wherein the polymerizable surfactant comprises a (meth)acrylate group.

4. The coating composition of claim 1 wherein the polymerizable surfactant has a hydrophilic-lipophilic balance ranging from 2 to 13.

5. The coating composition of claim 1 wherein the polymerizable surfactant comprises ethoxylate repeat units, propoxylate repeat units, or a mixture thereof.

6. The coating composition of claim 1 wherein the polymerizable surfactant has the formula:
R(OCH 2 CH 2 ) n OC(O)—C(R 6 )H═CH 2

wherein R is an alkyl group having at least 12 carbon atoms;
R 6 is hydrogen or alkyl having from 1 to 4 carbon atoms; and
n ranges from 1 to less than 20.

7. The coating composition of claim 1 wherein the non-ionic unpolymerizable surfactant is a liquid at ambient temperature.

8. The coating composition of claim 1 wherein the non-ionic unpolymerizable surfactant comprises an alkyl or alkenyl group having at least 12 carbon atoms.

9. The coating composition of claim 8 wherein the non-ionic unpolymerizable surfactant comprises ethoxylate repeat units, propoxylate repeat units, or a mixture thereof.

10. The coating composition of claim 1 wherein the coating composition further comprises an additive comprising a silicone group, or a fluorinated group, or a combination thereof.

11. The coating composition of claim 10 wherein the additive comprises a silicone group or a fluorinated group and a hydrophobic group comprising an alkyl group having greater than 6 carbon atoms.

12. The coating compositions of claim 10 wherein the additive comprises a silicone group or a fluorinated group and further comprises primary hydroxyl groups.

13. The coating composition of claim 11 wherein the additive comprises a hydrophobic group comprising an alkyl group having greater than 12 carbon atoms and at least one (meth)acrylate group.

14. The coating composition of claim 13 wherein the additive further comprises ethoxylate repeat units, propoxylate repeat units, or a mixture thereof bonded to the hydrophobic group.

15. The coating composition of claim 11 wherein the additive comprises a monovalent perfluoropolyether moiety.

16. The coating composition of claim 10 wherein the additive comprises a polyurethane backbone or a poly(meth)acrylate backbone.

17. The coating composition of claim 1 wherein the polymerizable resin comprises at least one monomer comprising two or more (meth)acrylate groups and ethoxylate repeat units, propoxylate repeat units, or a mixture thereof.

18. An article comprising the coating composition of claim 1 , wherein the coating composition is cured.

19. The article of claim 18 wherein the cured coating exhibits a ratio of simulated fingerprint visibility at 60 minutes to initial simulated fingerprint visibility of less than 0.80.

20. The coating composition of claim 1 wherein the coating composition is cured and exhibits no greater than 3 scratches when tested according to the Steel Wool Abrasion Resistance test method using a weight of 300 g and 10 wipes.

Assignees

• 3M Innovative Properties Co

Inventors

• Pokorny Richard J
• Klun Thomas P
• Ali Mahfuza B
• Cremons Daniel R
• Toy Michelle L

Classifications

• C09D5/1687 Primary

  Use of special additives · CPC title

• C09D133/04

  Homopolymers or copolymers of esters {(C09D143/04 takes precedence)} · CPC title

• C09D175/00

  Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers · CPC title

• C09D7/1233 Primary

  Chemistry & Metallurgy · mapped topic

• C09D7/45 Primary

  Anti-settling agents · CPC title