NOVEL SOLUBLE POLYIMIDES COMPRISING POLYALICYCLIC STRUCTURE

摘要

PURPOSE: A soluble polyimide resin having polyalicyclic structure is provided for enhancing heat-resistance, solubility and transparency by comprising specifically structured aromatic diamine monomer and aromatic tetracarboxylic dianhydride. CONSTITUTION: The soluble polyimide resin having polyalicyclic structure and the repeating units of formula 1 (wherein the radical of formula 1a represents at least one of quaternary value radicals selected from the groups in description; the radical of formula 1b represents at least one of the group including polyalicyclic structure expressed as follows in description) is produced by dissolving and polymerizing aromatic tetracarboxylic dianhydride and aromatic diamine compounds including at least one of cyclohexylidene dianiline derivative of formula 2 (wherein the radical of formula 2a represents the groups as follows in description). The polyimide resin has a specific viscosity of 0.2-1.1 dL/g, molecular weight of 50,000-200,000 g/mol and glass transition temperature of 260-410 deg.C.