Teijin Limited

Hideyuki Tsunemori

Katsuhiro Yamanaka

Hiroshi Okamoto

Kenta Imazato

Tomoya Nakanishi

Provided is a conductive film for antennas, in which a conducting film and a substrate made of a polycarbonate resin material containing a polycarbonate resin are laminated, and the polycarbonate resin contains, as main constituent units, a unit (A) represented by the following formula (1) and/or a unit (B) represented by the following formula (2). The conductive film for antennas has low dielectric characteristics and bendability, can form an antenna with a low transmission loss, and has excellent adhesion to the conducting film. (In the formula (1), Rand Reach independently represent an alkyl group having 1 to 6 carbon atoms or a halogen atom, and Rand Reach independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom.) (In the formula (2), Rand Reach independently represent an alkyl group having 1 to 6 carbon atoms or a halogen atom, Rand Reach independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom, Rrepresents a halogen atom, an alkyl group having 1 to 20 carbon atoms, or a cycloalkyl group having 3 to 20 carbon atoms, and n represents an integer of 0 to 10.)

Conductive film for antennas, and antenna

The present invention provides a polycarbonate copolymer having low specific gravity and high surface hardness. The polycarbonate copolymer of the present invention contains a unit (A) represented by the following formula (1-1) or (1-2) and a unit (B) represented by the following formula (3); wherein in formula (1-1), Rand Rrespectively and independently represent a hydrogen atom, hydrocarbon group having 1 to 10 carbon atoms that may contain an aromatic group, or halogen atom, and Y represents a divalent organic residue comprised of the following formula (2); in formula (2), Crepresents a cycloalkylene group, m represents an integer of 3 to 20, Rrepresents a hydrogen atom, halogen atom, alkyl group having 1 to 20 carbon atoms or cycloalkyl group having 3 to 20 carbon atoms, and n represents an integer of 1 to 10; in formula (1-2), R' and R&#x2032; respectively and independently represent a hydrogen atom, hydrocarbon group having 1 to 10 carbon atoms that may contain an aromatic group or a halogen atom, and W represents a single bond, carbon atom, oxygen atom or sulfur atom; and in formula (3), R, R, Rand Rrespectively and independently represent a hydrogen atom, halogen atom, alkyl group having 1 to 20 carbon atoms or cycloalkyl group having 3 to 20 carbon atoms: 

Polycarbonate copolymer

A polycarbonate copolymer or copolymerized polycarbonate blend having excellent amine resistance, which has, as main constituent units, (A) constituent units each represented by the following formula (1): wherein, in the formula (1), each of Rand Ris independently a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms and optionally containing an aromatic group, or a halogen atom, wherein, in the formula (2), each of Rand Ris independently an alkyl group having 1 to 6 carbon atoms or a halogen atom, and X is a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom, and wherein, in the formula (3), W represents a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom,

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Osaka, Japan

Hideyuki Tsunemori