TECHNOLOGY FOCUS - POLYMERS - Preparation (claimed): The compound (I) is prepared by subjecting 1,4-bis(3,4-dicarboxylic acid phenoxy)cyclohexane dianhydride, preferably trans- and/or cis-1,4-bis(3,4-dicarboxylic acid phenoxy)cyclohexane dianhydride, and binary primary amine to condensation reaction to obtain the product. The method comprises taking 1,4-bis(3,4-dicarboxylic acid phenoxy)cyclohexane dianhydride and binary primary amine monomer, adding to nitrogen or inert gas protected phenol solvent, stirring to completely dissolve, increasing the reaction system temperature to 180-210 degrees C, reacting for 6-12 hours, cooling the reaction system, adding into precipitator, collecting the precipitates, washing, and drying to obtain (I); or adding binary primary amine monomer to nitrogen or inert gas protected polar aprotic solvent, stirring to dissolve completely, adding 1,4-bis(3,4-dicarboxylic acid phenoxy)cyclohexane dianhydride, stirring and reacting for 12-48 hours to obtain the transparent viscous liquid polyamic acid solution, subjecting to thermal imidization or chemical imidization method to prepare polyimide solution, and drying to obtain transparent polyimide resin. The thermal imidization method comprises coating the polyamic acid solution into film and drying to obtain the transparent polyimide resin. The chemical imidization method comprises adding acetic anhydride and pyridine as mixed solvent in the polyamic acid solution, continuously stirring and reacting for 12-48 hours to obtain polyimide solution, adding the polyimide solution into precipitator, collecting the precipitates, and washing and drying the precipitates to obtain the transparent polyimide resin. The binary primary amine monomer is 3,3'-diaminodiphenyl sulfone, 4,4'-diaminodiphenyl sulfone, 2,2'-bis(trifluoromethyl)-4,4'-diaminodiphenyl sulfone, 2,2'-bis(difluoromethyl)-4,4'-diaminodiphenyl ether, 2,2-bis(4-(2-difluoromethyl-4-aminophenoxy)phenyl)hexafluorophosphate, and/or 2,2-bis(4-(3-difluoromethyl-5-aminophenoxy)phenyl)hexafluoropropane. Preferred Definitions:    Ar'=one or more of groups of formulae (1)-(15).