Coating compositions comprising non-ionic surfactant exhibiting reduced fingerprint visibility

Patent metadata

Field	Value
Publication number	US-9296904-B2
Application number	US-201213526800-A
Country	US
Kind code	B2
Filing date	Jun 19, 2012
Priority date	Dec 20, 2010
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

Presently described are coating compositions comprising a polymerizable resin composition and a non-ionic unpolymerizable surfactant. In some embodiments, the coating comprises greater than 10 wt-% of non-ionic unpolymerizable surfactant. In other embodiments, the coating composition comprises an an additive comprising a silicone group or a fluorinated group and a hydrophobic group. Also described are articles comprising the cured coating compositions. In one embodiment, an article is described comprising a cured coating wherein the cured coating exhibits a property of an initially visible simulated fingerprint reducing in visibility in 1-20 minutes. Also described is a method of determining the fingerprint visibility of a coating composition and a polyacylate composition useful as an additive. In another embodiment a coated surface is described comprising a polymeric organic material comprising a plurality of pores wherein a portion of the pores are interconnected and comprise a lipophilic liquid.

First claim

What is claimed is:

1. An article comprising a cured coating, the cured coating comprises the dried reaction product of a coating composition comprising:
a solvent;
a polymerizable resin composition;
a non-ionic unpolymerizable surfactant in combination with a polymerizable surfactant, the surfactants having an hydrophilic lipophilic balance ranging from 2 to 6; wherein the total amount of the surfactants is greater than 10 wt-% and ranges up to 25 wt-% solids; and
an additive comprising a fluorinated group, a hydrophobic group, and poly (meth) acrylate linkages;
wherein the cured coating comprises a plurality of pores wherein a portion of the pores are interconnected and comprise the non-ionic unpolymerizable surfactant optionally in combination with the polymerizable surfactant.

2. The article of claim 1 wherein the hydrophobic group comprises an alkyl or alkylene group having greater than 6 carbon atoms.

3. The article of claim 1 wherein the unpolymerizable non-ionic surfactant is a liquid at ambient temperature.

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

5. The article of claim 2 wherein the additive further comprises ethoxylate repeat units, propoxylate repeat units, or a mixture thereof bonded to the hydrophobic group.

6. The article of claim 2 wherein the additive is a free-radically polymerizable additive.

7. The article of claim 2 wherein the coating composition further comprises an additive comprising a polydimethylsiloxane backbone and at least one alkoxy side chain terminating with a (meth) acrylate group.

8. The article of claim 1 wherein the polymerizable resin composition comprises at least one free-radically polymerizable monomer, oligomer, polymer, or mixture thereof.

9. The article of claim 1 wherein the coating composition further comprises inorganic oxide nanoparticles.

10. The article of claim 1 wherein the cured coating exhibits a ratio of simulated fingerprint visibility at 20 minutes to initial simulated fingerprint of less than 0.80.

11. The article of claim 1 wherein the article is an optical display.

12. The article of claim 1 wherein the cured coating is provided on a light transmissive polymeric film.

13. The article of claim 1 wherein the additive has the formula:

Rf is a monovalent perfluoropolyether group,
Q is a connecting group having a valency of at least 2,
X is O, S, or NR, where R is H or lower alkyl of 1 to 4 carbon atoms,
R 6 is hydrogen or alkyl having from 1 to 4 carbon atoms,
R is a hydrophobic group,
Ra is independently an alkylene group C x H 2x where x =2 to 4,
j ranges from 7 to 50,
A is a (meth) acryl functional group, —XC(O)C(R2)═CH 2 , where R2 is a lower alkyl of 1 to 4 carbon atoms or H or F,
a ranges from 1 to 6,
m, n and o each independently range from 1 to 100, and
p ranges from 1 to 50.

14. The article of claim 1 wherein the additive has the formula:

Rf is a monovalent perfluoropolyether group,
Q is a connecting group having a valency of at least 2,
X is O, S, or NR, where R is H or lower alkyl of 1 to 4 carbon atoms,
R 6 is hydrogen or alkyl having from 1 to 4 carbon atoms,
R is a hydrophobic group,
Ra is independently an alkylene group C x H 2x where x =2 to 4,
j ranges from 7 to 50,
R 4 is an alky group having 1-24 carbon atoms,
A is a (meth) acryl functional group, —XC(O)C(R2)═CH 2 , where R2 is a lower alkyl of 1 to 4 carbon atoms or H or F,
a ranges from 1 to 6,
m, n and o each independently range from 1 to 100, and
p ranges from 0 to 50.

15. The article of claim 14 wherein p is at least 1.

Assignees

• Pokorny Richard J
• Klun Thomas P
• Walker Jr Christopher B
• Olson David B
• Noyola Joan M
• Toy Michelle L
• Schwartz Evan L
• 3M Innovative Properties Co

Inventors

• Pokorny Richard J
• Klun Thomas P
• Walker Jr Christopher B
• Olson David B
• Noyola Joan M
• Toy Michelle L
• Schwartz Evan L

Classifications

• C08F222/103

  of trialcohols, e.g. trimethylolpropane tri(meth)acrylate · CPC title

• C08G18/5015

  having fluorine atoms · CPC title

• C08G18/8116

  esters of acrylic or alkylacrylic acid having only one isocyanate or isothiocyanate group · CPC title

• C09D5/1618 Primary

  inorganic · CPC title

• C08G18/283

  Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds · CPC title