METHOD FOR PRODUCING A POLYCARBONATE LAYERED COMPOSITE
European Patent Office Patent
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Abstract
The invention relates to a method for making a structure with at least a first polymer layer and a second polymer layer, each made from a polycarbonate polymer based on bisphenol A, and in between the first polymer layer and the second polymer layer an intermediate layer being arranged, comprising the following steps: a) the intermediate layer is applied at least on a partial region of the first polymer layer, b) optionally the intermediate layer is dried, c) the first polymer layer is coated on the side, on which the intermediate layer is arranged, with a liquid preparation comprising a solvent or a mixture of solvents and a polycarbonate derivative based on a geminally disubstituted dihydroxydiphenyl cycloalkane, the preparation covering the intermediate layer, d) optionally a drying step is made after step c), e) after step c) or step d), the second polymer layer is placed on the first polymer layer, covering the intermediate layer, f) the first polymer layer and the second polymer layer are laminated with each other under pressure, at a temperature from 120° C. to 230° C. and for a defined time.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
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Patent Owner(s)
| Patent Owner | Address |
|---|---|
| BUNDESDRUCKEREI GMBH | DE10969 BERLIN |
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Inventor(s)
| Inventor Name | Address |
|---|---|
| KNEBEL MICHAEL | 13086 BERLIN |
| MUTH OLIVER | 12277 BERLIN |
| PUDLEINER HEINZ | KREFELD |
| MEYER KLAUS | DORMAGEN |
| EHREKE JENS | BERLIN |
| LEOPOLD ANDRÉ | BERLIN |
| SEIDEL RAINER | 13467 BERLIN |
| PAESCHKE MANFRED | WANDLITZ |
| YESILDAG CENGIZ | 51377 LEVERKUSEN |
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