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US 6,187,698 B1Granted
Thermosetting resin bonded shaped elements
AssigneeBakelite AG
InventorFranz-Josef Muller
Life of this patent
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Abstract
Fibrous shaped elements bonded with thermosetting resins comprising a plurality of fiber layers with at least two different thermosetting resins, preferably with inner fiber layers comprising phenolic resins as the bonding agent and the upper and lower outer layers comprising epoxide resins as the bonding agent.
Claims9
A fiber shaped element comprising at least two thermosetting binder bound fiber layers, and at least two fiber layers containing a different thermosetting binder.
A fiber shaped element comprising at least one inner fiber layer with a phenolic binder and at least one upper and one lower outer layer with an epoxide binder.
Dependencies are inferred from the claim text.