Patent ID: 6296930
Filing Date: 2001-10-02
Classification: C08G,Y10T

Abstract:
An aromatic liquid crystalline polyester resin film obtained by inflation-molding an aromatic liquid crystalline polyester resin comprising 30 to 80 mol % of the following repeating unit (A), 10 to 35 mol % of the following repeating unit (B) and 10 to 35 mol % of the following repeating unit (C): ##STR27##in the formula, Ar represents a divalent aromatic group, ##STR28##in the formula, Ar' represents two or more selected from ##STR29##and the content of ##STR30##based on the total of Ar' is 40-95 mole %, and having a logarithmic viscosity of 1.5 dl/g or more, a flow temperature of 300.degree. C. or less, and a melt tension measured at a temperature higher than the flow temperature by 25.degree. C. or more of 1.0 g or more, and the flow temperature means a temperature (.degree. C.) at which the melt viscosity measured by a capillary type rheometer is 48,000 poise when a resin which has been melted by heating at a temperature raising rate of 4.degree. C./min is extruded through a nozzle having an internal diameter of 1 mm and a length of 10 mm under a load of 100 kgf/cm.sup.2, at a blow ratio (TD drawing magnification) of 1.5 to 15 and draw ratio (MD drawing magnification) of 1.5 to 40.