IP Library › Granted Patent US 8,158,251
Granted Patent B2
US 8,158,251 · App. 12/365,243 · Granted Apr 17, 2012

Article with non-stick finish and improved scratch resistance

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Quick Facts
Patent No.
US 8,158,251
App. No.
12/365,243
Granted
Apr 17, 2012
Kind
B2
Abstract

An article includes a scratch resistant non-stick finish adhered to a substrate. The scratch resistant non-stick finish includes a primer layer, a midcoat layer, and a topcoat layer. The primer layer is adhered to the substrate and includes a first polymer binder and large ceramic particles, the midcoat layer includes a first fluoropolymer composition and inorganic whiskers, and the topcoat layer includes a second fluoropolymer composition.

Claims (14)

1. An article comprising a scratch resistant non-stick finish adhered to a substrate, wherein the scratch resistant non-stick finish comprises a primer layer, a midcoat layer, and a topcoat layer, wherein:

the primer layer is adhered to the substrate and comprises a first polymer binder and ceramic particles having an average particle size in the range of from about 10-50 μm;

the midcoat layer comprises a first fluoropolymer composition and inorganic whiskers; and

the topcoat layer comprises a second fluoropolymer composition.

2. The article of claim 1 , wherein the inorganic whiskers comprise silicon carbide.

3. The article of claim 1 , wherein the inorganic whiskers have a fiber aspect ratio of at least 3.3.

4. The article of claim 1 , wherein the inorganic whiskers have a diameter in the range of from about 0.45 to 3 μm.

5. The article of claim 1 , wherein the inorganic whiskers have a length in the range of from about 5 to 80 μm.

6. The article of claim 1 , wherein a composition of the midcoat layer comprises inorganic whiskers in the range of from greater than 0 to about 55 percent by weight in a dry film.

7. The article of claim 1 , wherein the large ceramic particles comprise silicon carbide.

8. The article of claim 1 , wherein the midcoat layer further comprises a second polymer binder.

9. The article of claim 8 , wherein a composition of the midcoat layer comprises the second polymer binder in the range of from about 1 to 20 percent by weight in a dry film.

10. The article of claim 8 , wherein the second polymer binder comprises polyamide imide.

11. The article of claim 1 , wherein the primer layer further comprises a third fluoropolymer composition.

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Apr 4, 2018
From: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: THE CHEMOURS COMPANY FC, LLC
Reel/Frame 045845/0913 →
SECURITY INTEREST Recorded Apr 4, 2018
From: THE CHEMOURS COMPANY FC, LLC
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 045846/0011 →
SECURITY AGREEMENT Recorded Jun 10, 2015
From: THE CHEMOURS COMPANY FC LLC; THE CHEMOURS COMPANY TT, LLC
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 035839/0675 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 15, 2015
From: E. I. DU PONT DE NEMOURS AND COMPANY
To: THE CHEMOURS COMPANY FC, LLC
Reel/Frame 035432/0023 →