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US 6,319,973 B1Granted
Solvent-free applicable heat-curing coating material
AssigneeDana Corporation
InventorsMarkus Lemm, Kai Lemke, Dieter Grafl
Life of this patent
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Abstract
Solvent-free applicable curable coating material containing as binder inorganic polymers and/or organic polymers, cross-linkers and sliding aids.
Claims13
A multi-layer gasket for sealing an internal combustion engine, the gasket comprising:
- a metal layer having first and second surfaces and at least one opening extending from the first surface to the second surface of the metal layer;
- and
- a polymeric layer at least partially covering the first surface of the metal layer, the polymeric layer comprising a pulverulent mixture applied on the metal layer in the absence of a solvent, the pulverulent mixture comprising a polymer binder, a cross-linker for curing the polymer binder, and a sliding aid.
A method of making a multi-layer gasket comprising:
- providing a metal layer having first and second surfaces and at least one opening extending from the first surface to the second surface of the metal layer;
- depositing a pulverulent mixture on the first surface of the metal layer, the pulverulent mixture comprising a polymer binder, a cross-linker for curing the polymer binder, and a sliding aid;
- heating the pulverulent mixture so as to form a polymeric layer that at least partially covers the first surface of the metal layer;
- and
- curing the polymer binder.
2 more elements
A method of making a multi-layer gasket comprising:
- providing a metal layer having first and second surfaces and at least one opening extending from the first surface to the second surface of the metal layer;
- depositing a mixture on the first surface of the metal layer in the absence of a solvent so as to form a polymeric layer at least partially covering the first surface of the metal layer, the mixture comprising a liquid polymer binder, a cross-linker for curing the liquid polymer binder, and a sliding aid;
- and
- curing the liquid polymer binder by heating.
1 more element
Dependencies are inferred from the claim text.