Multilayer articles comprising a release surface and methods thereof

Patent metadata

Field	Value
Publication number	US-10479067-B2
Application number	US-201615561082-A
Country	US
Kind code	B2
Filing date	Apr 1, 2016
Priority date	Apr 1, 2015
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

Described herein is multilayer article made by the process comprising: delivering particles comprising a silicon compound from at least one fluid jet to a metal surface to embed the metal surface with the silicon compound to form a silicon compound layer; coating the silicon compound layer with an aqueous fluoropolymer dispersion to form a fluoropolymer layer and thereby forming a multilayered article, wherein the aqueous fluoropolymer dispersion comprises (i) a modifying agent; and (ii) a fluorinated polymer, wherein the fluorinated polymer comprises at least one of (a) a partially fluorinated polymer capable of forming a carbon-carbon double bond, (b) a functionalized fluorinated polymer, and (c) combinations thereof; and sintering the multilayered article to form the release surface coated substrate.

First claim

What is claimed is:

1. A release surface coated substrate made by a process comprising:
delivering abrasive particles comprising a silicon compound from at least one gaseous fluid jet in the absence of liquids to a metal surface to embed the metal surface with the silicon compound to form a silicon compound layer, wherein the abrasive particles have a particle size ranging from 0.1 to 10000 microns and a Mohs hardness of from 3 to 10;
coating the silicon compound layer with an aqueous fluoropolymer dispersion to form a fluoropolymer layer and thereby forming a multilayered article, wherein the aqueous fluoropolymer dispersion comprises (i) a modifying agent and (ii) a fluorinated polymer, wherein the fluorinated polymer comprises at least one of (a) a partially fluorinated polymer capable of forming a carbon-carbon double bond, (b) a functionalized fluorinated polymer, and (c) combinations thereof; and
sintering the multilayered article to form the release surface coated substrate.

2. The release surface coated substrate of claim 1 , wherein the modifying agent is selected from a coupling agent, an activating agent, and combinations thereof.

3. The release surface coated substrate of claim 2 , wherein the activating agent is selected from a base, an amine-containing compound, a hydroxyl-containing compound, and combinations thereof.

4. The release surface coated substrate of claim 3 , wherein the aqueous fluoropolymer dispersion comprises 0.1 to 30% by weight of the activating agent relative to the fluorinated polymer.

5. A release surface coated substrate made by a process comprising:
delivering abrasive particles comprising a silicon compound from at least one gaseous fluid jet in the absence of liquids to a metal surface to embed the metal surface with the silicon compound to form a silicon compound layer, wherein the abrasive particles have a particle size ranging from 0.1 to 10000 microns and a Mohs hardness of from 3 to 10;
coating the silicon compound layer with a coating comprising a coupling agent to form a coupling agent layer;
coating the coupling agent layer with an aqueous fluoropolymer dispersion to form a fluoropolymer layer and thereby forming a multilayered article, wherein the aqueous fluoropolymer dispersion comprises a fluorinated polymer, wherein the fluorinated polymer comprises at least one of (a) a partially fluorinated polymer capable of forming a carbon-carbon double bond, (b) a functionalized fluorinated polymer, and (c) combinations thereof; and
sintering the multilayered article to form the release surface coated substrate.

6. The release surface coated substrate of claim 2 , wherein the coupling agent comprises at least one of a silane, a titanate, a zirconate, and combinations thereof.

7. The release surface coated substrate of claim 2 , wherein the coupling agent comprises at least one of: a trimethoxy silane, a triethoxy silane, and combinations thereof.

8. The release surface coated substrate of claim 2 , wherein the coupling agent comprises at least one of: vinyl trimethoxysilane, vinyl triethoxysilane, γ-glycidoxypropyl trimethoxysilane, γ-methacroyloxy propyltrimethoxysilane, tetramethyl divinyl silazane, 3-aminopropyl tri-methoxy silane, and combinations thereof.

9. The release surface coated substrate of claim 1 , wherein the aqueous fluoropolymer dispersion is substantially free of a binder.

10. The release surface coated substrate of claim 1 , wherein the silicon compound comprises at least one of: amorphous silica, silicic acid, silicon dioxide, and combinations thereof.

11. The release surface coated substrate of claim 1 , wherein the aqueous fluoropolymer dispersion comprises a fluoropolymeric core-shell particle with the fluorinated polymer shell and a perfluorinated polymer core.

12. The release surface coated substrate of claim 1 , wherein the functionalized fluorinated polymer comprises at least one of (a) —COX groups, wherein X is OH, ONa, OK, NH 2 , F, or Cl; (b) —SO 2 X where X is OH, ONa, OK, NH 2 , F, or Cl; (c) —CH 2 OSO 2 Y where Y═OH, ONa, or OK; (d) —CH 2 OH; (e) phosphate group; (f) —CN, (g) a halogen selected from Br, I, and Cl; and (h) combinations thereof.

13. The release surface coated substrate of claim 1 , wherein the particles comprise an abrasive particle having an outer surface comprising the silicon compound.

14. The release surface coated substrate of claim 1 , wherein the aqueous fluoropolymer dispersion further comprises an inorganic filler.

15. The release surface coated substrate of claim 1 , wherein when the aqueous fluoropolymer dispersion comprises a fluorinated polymer having at least 30 reactive groups per 1,000,000 carbon atoms.

16. The release surface coated substrate of claim 1 , wherein the metal substrate includes at least one of steel, high-carbon steel, stainless steel, aluminized steel, aluminum, and aluminum alloys.

17. The release surface coated substrate of claim 1 , wherein the particle is selected from silica, alumina, zirconia, barium titanate, calcium titanate, sodium titanate, titanium oxide, glass, biocompatible glass, diamond, silicon carbide, calcium phosphate, calcium carbonate, metallic powders, carbon fiber composites, polymeric composites, titanium, stainless steel, hardened steel, carbon steel chromium alloys, or any combination thereof.

18. The release surface coated substrate of claim 1 , further comprising an additional layer that is disposed on top of the fluoropolymer layer.

19. A process for making a release surface coated substrate comprising:
delivering abrasive particles comprising a silicon compound from at least one gaseous fluid jet in the absence of liquids to a metal surface to embed the metal surface with the silicon compound to form a silicon compound layer, wherein the abrasive particles have a particle size ranging from 0.1 to 10000 microns and a Mohs hardness of from 3 to 10;
coating the silicon compound layer with an aqueous fluoropolymer dispersion to form a fluoropolymer layer and thereby forming a multilayered article, wherein the aqueous fluoropolymer dispersion comprises (i) a modifying agent and (ii) a fluorinated polymer, wherein the fluorinated polymer comprises at least one of (a) a partially fluorinated polymer capable of forming a carbon-carbon double bond, (b) a functionalized fluorinated polymer, and (c) combinations thereof; and
sintering the multilayered article to form the release surface coated substrate.

20. A process for making a release surface coated substrate comprising:
delivering abrasive particles comprising a silicon compound from at least one gaseous fluid jet in the absence of liquids to a metal surface to embed the metal surface with the silicon compound to form a silicon compound layer, wherein the abrasive particles have a particle size ranging from 0.1 to 10000 microns and a Mohs hardness of from 3 to 10;
coating the silicon compound layer with a coating comprising a coupling agent to form a coupling agent layer;
coating the coupling agent layer with an aqueous fluoropolymer dispersion to form a fluoropolymer layer and thereby forming a multilayered article, wherein the aqueous fluoropolymer dispersion comprises a fluorinated polymer, wherein the fluorinated polymer comprises at least one of (a) a partially fluorinated polymer capable of forming a carbon-carbon double bond, (b) a functionalized fluorinated polymer, and (c) combinations thereof; and
sintering the multilayered article to form the release surface coated substrate.

Assignees

• 3M Innovative Properties Co

Inventors

• Bissinger Peter
• Dadalas Michael C
• Doebert Philipp
• Guggenberger Rainer A
• Hintzer Klaus
• Zipplies Tilman C

Classifications

• B05D5/086

  having an anchoring layer · CPC title

• A47J36/025

  Vessels with non-stick features, e.g. coatings · CPC title

• B05D7/542

  the two layers being cured or baked together · CPC title

• B05D3/0254

  After-treatment · CPC title

• B05D2506/10

  Fluorinated polymers · CPC title