Coating composition for coated substrates and methods of making the same

• US 9,546,300 B2
• Filed: 03/15/2013
• Issued: 01/17/2017
• Est. Priority Date: 09/28/2012
• Status: Active Grant

• Current Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Inventors: Bimanand, Alexander, Uprety, Krishna K., Lakdawala, Khushroo H.
• Primary Examiner(s): Sample, David
• Assistant Examiner(s): Flores, Jr., Donald M
• Application Number:
  US13/843,213
• Publication Number:
  US 20140093738A1
• Time in Patent Office: 1,404 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B05D 7/02 to macromolecular substances, e.g. rubber treatment or coating of shaped articles made of macromolecular substances C08J7/00
• CPC Class Codes: B64C 1/1476 Canopies; Windscreens or similar transparent elements
• CPC Class Codes: B64D 45/02 Lightning protectors; Static dischargers in general H01T
• CPC Class Codes: B64D 7/00 Arrangements of military equipment, e.g. armaments, armament accessories, or military shielding, in aircraft; Adaptations of armament mountings for aircraft dropping bombs or the like B64D1/00; armaments or mountings therefor per se F41
• CPC Class Codes: C03C 17/42 at least one coating of an organic material and at least one non-metal coating
• CPC Class Codes: C08G 18/4063 Mixtures of compounds of group C08G18/62 with other macromolecular compounds
• CPC Class Codes: C08G 18/4277 Caprolactone and/or substituted caprolactone
• CPC Class Codes: C08G 18/6279 containing fluorine atoms
• CPC Class Codes: C08G 18/706 the liquid medium being water
• CPC Class Codes: C08G 18/7831 containing biuret groups
• CPC Class Codes: C08G 18/792 formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
• CPC Class Codes: C09D 175/04 Polyurethanes
• CPC Class Codes: C09D 175/06 from polyesters
• CPC Class Codes: C23C 14/0036 Reactive sputtering
• CPC Class Codes: C23C 14/083 of refractory metals or yttrium
• CPC Class Codes: C23C 14/205 by cathodic sputtering
• CPC Class Codes: C23C 28/00 Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
• CPC Class Codes: C23C 28/322 only coatings of metal elements only
• CPC Class Codes: C23C 28/3455 with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer
• CPC Class Codes: C23C 28/42 characterized by the composition of the alternating layers
• CPC Class Codes: G02B 1/116 : including electrically conducting layers
• CPC Class Codes: G02B 1/16 : having an anti-static effect, e.g. electrically conducting coatings
• CPC Class Codes: Y10T 428/31551 : Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31609 : Particulate metal or metal compound-containing

Abstract

A coating composition including a hydrophobic first aliphatic polyisocyanate, a second aliphatic polyisocyanate including a hydrophilic portion, a polyester polyol, a hydrophilic polyol, and a fluorinated polyol compound is disclosed. A coated substrate including a topcoat including the composition is also disclosed. Methods of forming the topcoat on a substrate are also disclosed.

Claims

1. A coating composition comprising:

a hydrophobic first aliphatic polyisocyanate;

a second aliphatic polyisocyanate comprising a hydrophilic portion;

a polyester polyol;

a hydrophilic polyol;

a fluorinated polyol, and

a fluorinated alcohol having one reactive functional group, wherein the one reactive functional group is one hydroxyl group.

2. The coating composition of claim 1, wherein the second aliphatic polyisocyanate further comprises a hydrophobic portion.

3. The coating composition of claim 2, wherein the hydrophobic portion of the second aliphatic polyisocyanate comprises an isophorone diisocyanate moiety or a derivative thereof.

4. The coating composition of claim 1, wherein the hydrophilic portion of the second aliphatic polyisocyanate comprises a polyether chain.

5. The coating composition of claim 1, wherein the second aliphatic polyisocyanate comprises a polyether chain bonded to an isophorone diisocyanate trimer.

6. The coating composition of claim 1, wherein the hydrophobic first aliphatic polyisocyanate has an isocyanate functionality in a range of 3.0 to 4.2.

7. The coating composition of claim 1, wherein the hydrophobic first aliphatic polyisocyanate is selected from the group consisting of biuret-based polyisocyanates, isocyanurate ring-based polyisocyanates, and combinations thereof.

8. The coating composition of claim 1, wherein the polyester polyol comprises four hydroxyl groups.

9. The coating composition of claim 8, wherein the polyester polyol comprises polycaprolactone having four polycaprolactone chains, and one of the four hydroxyl groups is at a terminal end of each polycaprolactone chain.

10. The coating composition of claim 1, wherein the polyester polyol is a polycaprolactone polyol and/or a polycaprolactone diol.

11. The coating composition of claim 1, further comprising a polyester diol.

12. The coating composition of claim 11, wherein the polyester diol is a linear aliphatic dial having a first end comprising a hydroxyl group and a second end comprising a hydroxyl group.

13. The coating composition of claim 1, wherein the fluorinated polyol comprises a backbone comprising alternating substituted or unsubstituted fluoroethylene and substituted or unsubstituted vinyl ether segments.

14. The coating composition of claim 1, wherein the fluorinated alcohol comprises a perfluorinated carbon chain.

15. The coating composition of claim 14, wherein the fluorinated alcohol further comprises a linking group between the perfluorinated carbon chain and the hydroxyl group.

16. The coating composition of claim 1, further comprising an anti-static agent comprising a hydroxyl group, a UV absorber comprising a hydroxyl group, a migratory UV absorber, a migratory UV stabilizer, or a UV stabilizer comprising a hydroxyl group.

17. A coating formed from the coating composition of claim 1.

18. A coated substrate comprising:

a substrate, and

the coating of claim 17 on the substrate.

19. The coated substrate of claim 18, further comprising:

an electrically conductive multilayer stack between the substrate and the coating, the electrically conductive multilayer stack comprising;

first and second metal oxide layers comprising titanium oxide, the first metal oxide layer comprising a first region, a second region on the first region, and a third region on the second region, the first region and the third region each having a higher oxygen concentration than that of the second region; and

a metal layer between the first and second metal oxide layers.

20. The coating composition of claim 1, wherein a weight ratio of the hydrophobic first aliphatic polyisocyanate to the second aliphatic polyisocyanate is in a range of about 95:

5 to about 85;

15.

21. The coating composition of claim 1, wherein the fluorinated alcohol having one reactive functional group has a molecular weight of about 300 g/mole to about 400 g/mole.