Super-heat resistant, transparent and low dielectric polyimides based on spirocyclic bisbenzoxazole diamines with <i>T</i><sub>g</sub> > 450 °C
Peng Xiao, Xiaojie He, Feng Zheng, Qinghua Lu
Abstract
A series of isomers with a spiro-ring structure connecting two benzoxazole rings were synthesized, and their corresponding polyimides showed high heat resistance ( T g = 491 °C) and transparency ( T 550 nm = 90%).
Topics & Concepts
BenzoxazoleDielectricRing (chemistry)Materials scienceTransparency (behavior)Polymer chemistryChemistryOrganic chemistryOptoelectronicsLawPolitical scienceSynthesis and properties of polymersEpoxy Resin Curing ProcessesSilicone and Siloxane Chemistry