97/01704 A comparative study on the synthesis of carbon fibers and activated carbon fibers from various coal liquids

Studies on the synthesis and properties

Studies on the synthesis and properties of thermotropic liquid crystalline polycarbonates. VII. Liquid crystalline polycarbonates and poly(ester-carbonate)s derived from various mesogenic groups

✍ Shih-Jieh Sun; Ya-Chi Liao; Teh-Chou Chang 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 311 KB 👁 2 views

Three series of thermotropic liquid crystalline polycarbonates and poly(ester-carbonate)s were prepared by solution polycondensation of 4,4Ј-biphenyldiol (BP), 4Ј-hydroxybiphenyl-4-hydroxybenzoate (HHB), or 4-hydroxyphenyl-4Љ-hydroxybiphenyl-4Ј-carboxylate (HHBP), as mesogenic unit, with 1,10-bis(p-