Laminate of liquid crystalline polyester with copper foil

Details Laminate of liquid crystalline polyester with copper foil Laminate of liquid crystalline polyester with copper foil

2011-02-08

2011-02-08

Jackson, Monique R (Department: 1787)

Stock material or miscellaneous articles

Composite

Of metal

C428S457000, C428S480000, C427S372200, C427S384000, C427S385500, C427S388100

Reexamination Certificate

active

07883780

ABSTRACT:
The present invention provides a laminate comprising a resin layer and a copper foil. The resin layer is made from a liquid crystalline polyester having at least one structural unit selected from a structural unit derived from aromatic diamine and a structural unit derived from aromatic amine with a phenolic hydroxyl group in an amount of 10 to 35% by mole on the basis of the total structural units in the polyester. The copper foil has a tensile modulus of 60 GPa or smaller and a tensile strength at break of 150 MPa or smaller measured after heat treatment at a temperature of 300° C. The copper-foil laminate has good flexibility and high durability with little anisotropy is provided.

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Ito, Toyonari et al., (2006). “Newly Developed Solvent-Casting Type LCP Film Suitable for PCB Applications”. International Conference on Electronics Packing (ICEP), IT-Related Chemicals Research Laboratory, Sumitomo Chemical Co., Ltd., pp. 112-117.

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