| 摘要 |
PROBLEM TO BE SOLVED: To obtain a flame-retardant liquid crystal polyester composition which is excellent in flowability and discoloration resistance and can give a highly flame-retardant molding excellent in heat resistance, mechanical properties and moisture resistance even when the molding is thin-walled by mixing a liquid polyester with red phosphorus. SOLUTION: The liquid crystal polyester (A) comprises structural units represented by formulas I to IV [wherein R1 is at least one group selected among formulas V to XI; and R2 is at least one group selected from among formulas XII to XX (wherein X is H or Cl)]. The structural unit of formula I is derived from p-hydroxybenzoic acid, the structural unit of formula II is derived from an aromatic diol selected among 4,4'-dihydroxybiphenyl, hydroquinone, 2,6-dihydroxynaphthalene, etc., the structural unit of formula III is derived from ethylene glycol, and the structural units of formula IV is derived from terephthalic acid, 4,4'-diphenylcarboxylic acid or the like. 0.01-10 pts.wt. stabilized red phosphorus (B) is added to 100 pts.wt. component A. |
