Method for producing a polycarbonate layered composite

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United States of America Patent

PATENT NO 10723109
APP PUB NO 20170266936A1
SERIAL NO

15610768

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
BUNDESDRUCKEREI GMBHKOMMANDANTENSTRASSE 18 BERLIN 10969

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ehreke, Jens Berlin, DE 12 87
Knebel, Michael Berlin, DE 12 70
Leopold, Andre Berlin, DE 9 25
Meyer, Klaus Dormagen, DE 112 899
Muth, Oliver Berlin, DE 29 233
Paeschke, Manfred Basdorf, DE 73 1086
Pudleiner, Heinz Krefeld, DE 106 717
Seidel, Rainer Berlin, DE 13 67
Yesildag, Cengiz Leverkusen, DE 7 13

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