Fluorinated coatings with lubricious additive

Patent metadata

Field	Value
Publication number	US-9611399-B2
Application number	US-201214350776-A
Country	US
Kind code	B2
Filing date	Nov 2, 2012
Priority date	Nov 15, 2011
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

Fluorinated coatings having a lubricious additive, articles with the fluorinated coatings, and methods of making articles with the fluorinated coatings are provided. More specifically, the fluorinated coatings are prepared from a curable coating composition that includes both a fluorinated silane and a fluorinated polyether oil. The curable coating composition is typically applied adjacent to a siliceous substrate and then cured. The resulting cured articles can have an outer surface that has a good tactile response, that is abrasion resistant, that is easy to clean, or a combination thereof.

First claim

The invention claimed is:

1. A curable coating composition comprising:
1) a fluorinated silane of Formula (I)
F(CF(CF 3 )CF 2 O) n CF(CF 3 )—CH 2 O—CH 2 CH 2 CH 2 Si(R 1 ) 3-x (R 2 ) x    (I)

wherein
R 1 is hydroxy or a hydrolyzable group;
R 2 is a non-hydrolyzable group;
n is an integer in a range of 4 to 100;
x is equal to 0, 1, or 2; and

2) a fluorinated polyether oil having zero or one hydrogen atoms per molecule, wherein the curable coating composition is free of silica particles.

2. The curable coating composition of claim 1 further comprising a fluorinated solvent that is miscible with the fluorinated silane and the fluorinated polyether oil.

3. The curable coating composition of claim 2 , wherein the curable coating composition comprises at least 70 weight percent fluorinated solvent based on a total weight of the curable coating composition.

4. The curable coating composition of claim 1 , wherein a weight ratio of fluorinated polyether oil to fluorinated silane is in a range of 1:100 to 75:100.

5. The curable coating composition of claim 1 , wherein the fluorinated polyether oil is perfluorinated polyether oil.

6. The curable coating composition of claim 5 , wherein the perfluorinated polyether oil is of formula C 3 F 7 O[CF(CF 3 )CF 2 O] b C 2 F 5 wherein b is an integer in a range of 10 to 60.

7. The curable coating composition of claim 5 , wherein the perfluorinated polyether oil is of formula F[CF 2 CF 2 CF 2 O] d CF 2 CF 3 wherein d is an integer in a range of 10 to 60.

8. The curable coating composition of claim 5 , wherein the perfluorinated polyether oil is random polymer of formula CF 3 [OCF 2 CF 2 ] p (OCF 2 )OCF 3 where a sum (p+q) is an integer in a range of 40 to 180 and a quotient (p÷q) is in a range of 0.5 to 2.

9. The curable coating composition of claim 1 , wherein the fluorinated polyether oil is of formula C 3 F 7 O[CF(CF 3 )CF 2 O] v CFHCF 3 where v is an integer in a range of 3 to 60.

10. The curable coating composition of claim 1 , wherein the hydrolyzable group is an alkoxy having 1 to 4 carbon atoms.

11. An article comprising:
a siliceous substrate;
a layer of a curable coating composition adjacent to the siliceous substrate, the curable coating composition comprising
1) a fluorinated silane of Formula (I)
F(CF(CF 3 )CF 2 O) n CF(CF 3 )—CH 2 O—CH 2 CH 2 CH 2 Si(R 1 ) 3-x (R 2 ) x    (I)

wherein
R 1 is hydroxy or a hydrolyzable group;
R 2 is a non-hydrolyzable group;
n is an integer in a range of 4 to 100;
x is equal to 0, 1, or 2; and

2) a fluorinated polyether oil having zero or one hydrogen atoms per molecule, wherein the curable coating composition is free of silica particles.

12. An article comprising:
a siliceous substrate; and
a layer of a cured coating composition adjacent to the siliceous substrate, the cured coating composition comprising a reaction product of a curable coating composition with a surface of the siliceous substrate, the curable coating composition comprising
1) a fluorinated silane of Formula (I)
F(CF(CF 3 )CF 2 O) n CF(CF 3 )—CH 2 O—CH 2 CH 2 CH 2 Si(R 1 ) 3-x (R 2 ) x    (I)

wherein
R 1 is hydroxy or a hydrolyzable group;
R 2 is a non-hydrolyzable group;
n is an integer in a range of 4 to 100;
x is equal to 0, 1, or 2; and
2) a fluorinated polyether oil having zero or one hydrogen atoms per molecule, wherein the curable coating composition is free of silica particles.

13. A method of making a fluorinated surface, the method comprising:
providing a siliceous substrate;
disposing a curable coating composition adjacent to the siliceous substrate, the curable coating composition comprising
1) a fluorinated silane of Formula (I)
F(CF(CF 3 )CF 2 O) n CF(CF 3 )—CH 2 O—CH 2 CH 2 CH 2 Si(R 1 ) 3-x (R 2 ) x    (I)

wherein
R 1 is hydroxy or a hydrolyzable group;
R 2 is a non-hydrolyzable group;
n is an integer in a range of 4 to 100;
x is equal to 0, 1, or 2; and

2) a fluorinated polyether oil having zero or one hydrogen atoms per molecule, wherein the curable coating composition is free of silica particles; and
reacting the curable coating composition with a surface of the siliceous substrate to form a cured coating composition.

14. The method of claim 13 , wherein the curable coating composition further comprises a fluorinated solvent that is miscible with the fluorinated silane and the fluorinated polyether oil.

15. The method of claim 14 , wherein the method further comprises removing the fluorinated solvent after disposing the curable coating composition adjacent to the siliceous substrate.

16. The method of claim 13 , wherein disposing the curable coating composition adjacent to the siliceous substrate comprises applying the curable coating composition to a surface of the siliceous substrate by spray coating, knife coating, meniscus coating, spin coating, or dip coating.

17. The method of claim 13 , wherein disposing the curable coating composition adjacent to the siliceous substrate comprises vapor depositing the fluorinated silane and then applying the fluorinated polyether oil.

18. The method of claim 13 , wherein disposing the curable coating composition adjacent to the siliceous substrate comprises vapor depositing the fluorinated silane and the fluorinated polyether oil.

Assignees

• 3M Innovative Properties Co

Inventors

• Flynn Richard M
• Olson Erik D
• Bechtold Kevin J
• Bench Michael W

Classifications

• Y10T428/31663

  As siloxane, silicone or silane · CPC title

• C08G77/46

  containing polyether sequences · CPC title

• C09D7/125 Primary

  Chemistry & Metallurgy · mapped topic

• C09D183/08

  containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen · CPC title

• C09D183/12

  containing polyether sequences · CPC title