Liquid crystal polyester as well as preparation method and application thereof

• Main Authors: JIANG SUJUN, CHEN PINGXU, XIAO ZHONGPENG, YE NANBIAO, HUANG XIANBO, XIAO ZEFAN
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses liquid crystal polyester and a preparation method and application thereof, and the liquid crystal polyester comprises the following components based on the total amount of repetitive units: 25-70mol% of repetitive units derived from 4-hydroxybenzoic acid; a repeating unit derived from para-aryl dicarboxylic acid, wherein the content of the repeating unit is 7-40 mol%; a repeating unit derived from para-aryl diphenol, wherein the content of the repeating unit is 6-39 mol%; the compound has a bending effect structural repetitive unit, and the content is 1-30 mol%; the repeating unit with the bending effect structure is derived from at least one residue structure of 1, 3-phthalic acid, 3-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid and 2, 6-naphthalic acid. The liquid crystal polyester provided by the invention can balance the contradiction between high melt flowability and crystallinity. 本发明公开了一种液晶聚酯及其制备方法和应用，所述液晶聚酯以重复单元总量计，含有：衍生自4-羟基苯甲酸的重复单元，含量为25-70mol％；衍生自对位芳基二羧酸的重复单元，含量为7-40mol％；衍