THERMOPLASTIC POLYIMIDE RESIN FOR FLEXIBLE METAL LAMINATE, FLEXIBLE METAL LAMINATE, AND PREPARATION METHOD OF FLEXIBLE METAL LAMINATE

摘要

The present invention relates to a thermoplastic polyimide resin for a ductile metal laminate, a ductile metal laminate comprising a thermoplastic polyimide resin layer including the thermoplastic polyimide resin; and a preparation method of a ductile metal laminate. More particularly, the thermoplastic polyimide resin for a ductile metal laminate has 30C or less temperature difference between a second transition temperature (T_2) and glass transition temperature (Tg) while comprising particular repeat units with a certain molar ratio. The second transition temperature (T_2) is when a rate of change in the ratio of an increment in temperature to an increment in length is maximized in the region above the glass transition temperature (Tg). The polyimide resin comprises a repeat unit represented by chemical formula 1 and a repeat unit represented by chemical formula 2 by a molar ratio of 2:10 to 7:10.