Single-layer coating
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SEB SA
- Filing Date
- 2024-06-21
- Publication Date
- 2026-06-25
Smart Images
Figure 2026521040000001_ABST
Abstract
Claims
1. A coating (3) for household goods on a metal substrate (2), wherein one side (3a) of the coating (3) is in contact with the metal substrate (2), and the other side (3b) is visible to the user, and the coating comprises either multiple layers or a single layer. Each of the aforementioned multiple layers contains one or more polyaryl ether ketones (PAEKs), and at least one of these layers is: - With at least 70% by weight of a polymer phase; - With one or more types of fillers; - With one or more additives as optional; - Selectively use one or more types of colorants The polymer phase consists of: ○ comprising at least 50% by weight of one or more types of polyaryl ether ketones (PAEK); one or more types of organic polysiloxane polymers, one or more types of aromatic thermoplastic polymers other than PAEK, one or more types of heterocyclic thermoplastic polymers, and mixtures thereof, and a remainder optionally selected from one or more types of fluorocarbon resins; or ○ It consists of at least 50% by weight of one or more polymers selected from aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organic polysiloxane polymers and mixtures thereof, and the remainder which is one or more polyaryl ether ketones (PAEK) and optionally one or more fluorocarbon resins. The aforementioned single layer is: - With at least 70% by weight of a polymer phase; - With one or more types of fillers; - With one or more additives as optional; - Selectively using one or more types of colorants, The polymer phase consists of: ○ comprising at least 50% by weight of one or more types of polyaryl ether ketones (PAEK); one or more types of organic polysiloxane polymers, one or more types of aromatic thermoplastic polymers other than PAEK, one or more types of heterocyclic thermoplastic polymers, and mixtures thereof, and a remainder optionally selected from one or more types of fluorocarbon resins; or ○ A polymer comprising at least 50% by weight of one or more polymers selected from aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organic polysiloxane polymers and mixtures thereof, and the remainder being one or more polyaryl ether ketones (PAEK) and optionally one or more fluorocarbon resins. A coating (3) characterized by the above.
2. The coating (3) according to claim 1, characterized in that the polyaryl ether ketone (PAEK) is selected from the group consisting of polyether ketone (PEK), polyether ether ketone (PEEK), polyether ketone ketone (PEKK), polyether ether ketone ketone (PEEKK), polyether ketone ether ketone ketone (PEKEKK), and mixtures thereof.
3. The coating (3) according to claim 1, characterized in that the aromatic thermoplastic polymer other than PAEK is selected from the group consisting of poly(phenylene oxide) (PPO), polymer (polyaryl ethersulfone) (PAES), and in particular polyethersulfone (PES), polyphenylene ethersulfone (PPSU), polyphenylene sulfide (PPS), poly(arylene sulfide) (PAS), liquid crystal polymer, and mixtures thereof.
4. The coating (3) according to claim 1, characterized in that the heterocyclic thermoplastic polymer is selected from the group consisting of polyetherimide (PEI), polyimide (PI), polyamideimide (PAI), polybenzimidazole (PBI), and mixtures thereof.
5. The organic polysiloxane polymer is selected from the group consisting of organic polysiloxane polymers or polymers produced from oligomer precursors. The coating (3) according to any one of claims 1 to 4, characterized in that the polymer is in the form of silicone oils with different degrees of branching, or silicone resins with different degrees of pre-crosslinking, or a copolymer of silicone resins such as silicone-polyester resin, silicone-alkyd resin, silicone-polyurethane resin, or silicone-epoxy, silicone oil, silicone resin, and a mixture of a copolymer of silicone resins.
6. The coating (3) according to any one of claims 1 to 5, characterized in that at least one of the polyaryl ether ketones (PAEK) present in each layer is polyether ether ketone (PEEK) or polyether ketone ketone (PEKK).
7. The coating (3) according to any one of claims 1 to 5, characterized in that the aromatic thermoplastic polymer other than PAEK includes polyethersulfone (PES) or polyphenylene sulfide (PPS).
8. The coating (3) according to any one of claims 1 to 7, characterized in that the organic polysiloxane polymer is a silicone oil or silicone resin copolymer.
9. The coating (3) according to any one of claims 1 to 7, characterized in that the polymer phase contains at least 60% by weight of one or more of the polyaryl ether ketones (PAEKs).
10. The coating (3) according to any one of claims 1 to 7, characterized in that the polymer phase contains at least 70% by weight of one or more of the aforementioned polyaryl ether ketones (PAEKs).
11. The coating (3) according to any one of claims 1 to 8, characterized in that the polymer phase comprises at least 60% by weight of one or more polymers selected from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organic polysiloxane polymers and mixtures thereof.
12. The coating (3) according to claim 11, characterized in that the polymer phase comprises at least 70% by weight of one or more polymers selected from the group consisting of aromatic thermoplastic polymers other than PAEK, heterocyclic thermoplastic polymers, organic polysiloxane polymers, and mixtures thereof.
13. The coating comprises a plurality of layers, all of which contain polyether ether ketone (PEEK), and at least one of the layers contains - With at least 70% by weight of a polymer phase; - With one or more types of fillers; - With one or more additives as optional; - Selectively using one or more types of colorants, The polymer phase consists of: ○ Consists of at least 50% by weight of polyetheretherketone (PEEK); the remainder being polyethersulfone (PES) and optionally PTFE; or ○ Consists of at least 50% by weight of polyethersulfone (PES); and the remainder being polyetheretherketone (PEEK) and optionally PTFE, A coating (3) according to any one of claims 1 to 8, characterized in that
14. The coating comprises a plurality of layers, all of which contain polyether ether ketone (PEEK), and at least one of the layers contains - With at least 70% by weight of a polymer phase; - With one or more types of fillers; - With one or more additives as optional; - Selectively using one or more types of colorants, The polymer phase consists of: ○ Consists of at least 50% by weight of polyetheretherketone (PEEK); the remainder being silicone oil and optionally PTFE; or ○ A mixture consisting of at least 50% by weight of silicone oil; and the remainder being polyetheretherketone (PEEK) and optionally PTFE. A coating (3) according to any one of claims 1 to 8, characterized in that
15. The coating (3) according to any one of claims 1 to 14, characterized in that the filler is selected from the group consisting of ceramic and / or mineral and / or metal fillers and / or hydrophobic silica and / or diamond particles.
16. A coating (3) according to any one of claims 1 to 15, characterized in that it is a non-adhesive coating.
17. A coated heating element (1) for household use, comprising a metal substrate (2) coated with a film according to any one of claims 1 to 16 on at least one surface (2a), wherein one surface (3a) of the film is in contact with the metal substrate (2) and the other surface (3b) is visible to the user.
18. A method for manufacturing the coated heating element (1) described in claim 17, comprising the following consecutive steps: i. A step of providing a metal substrate (2) having a surface (2a); ii. A step of optionally pre-treating the surface (2a) of the metal substrate (2) to be coated; iii. The step of applying a coating layer (3) to surface (2a); iv. A process for curing the elements manufactured in process iii, A method characterized by including the following.
19. The method according to claim 18, characterized in that step iii is performed by spraying, screen printing, roll coating, or electrostatic spraying of the liquid or powder coating composition of the film (3).
20. The method according to claim 18, characterized in that it includes a drying step at 80 to 150°C after the application of each layer.
21. The method according to claim 18, characterized by comprising a single final curing step iv for all applied layers.
22. The method according to any one of claims 16 to 21, characterized in that it includes a step of molding the support (2) before or after step i or step iii.
23. A household product comprising a coated heating element (1) as described in claim 17, wherein the household product is a cooking utensil, and the surface (3b) of the coating as described in any one of claims 1 to 16 is suitable for holding food.
24. The cooking utensil according to claim 23, characterized in that it is selected from the group consisting of pots, frying pans, fondue pots or raclette pots, stew pots, woks, skillets, crepe pans, grill pans, griddles, stockpots, Dutch ovens, bowls for cooking utensils or bread makers, and cooking molds.
25. An electric cooking appliance comprising a covered heating element (1) and a heat source configured to heat the covered heating element (1), wherein the covered heating element (1) is the covered heating element described in claim 17.
26. The electric cooking appliance according to claim 25, characterized in that it is selected from the group consisting of an electric crepe maker, an electric raclette griddle, an electric fondue pot, an electric grill, an electric griddle, an electric cooker, a bread maker, and an electric pressure cooker.