To provide a copolyester resin composition that provides a film which has both excellent dimensional stability against change in temperature or humidity and excellent surface roughness and is extremely preferable as a high-density magnetic storage medium when formed into a biaxially oriented film.
The copolyester resin composition comprises: an aromatic dicarboxylic acid residue represented by following formulae (I) -(O)C-R2-OR1O-R2-C(O)- and (II) -(O)C-R4-C(O)- (in formula (I), R1 is a 2-10C alkylene; and R2 is a 2,6-naphthalenediyl; and in formula (II), R4 is a phenylene or a naphthalenediyl); and a 2-4C alkylene glycol residue, wherein a reactant of a phosphorus compound represented by formula (A) with a metallic compound is contained in a copolyester in which a rate of the aromatic dicarboxylic acid residue represented by formula (I) is 5 mol% or mroe but less than 50 mol% (in formula (A), R6 represents alkyl which is a 1-12C hydrocarbon group, aryl or benzyl; and R7 and R8 are each independently hydrogen, alkyl which is a 1-12C hydrocarbon group, aryl or benzyl).
| JPH11100451 | SHEET FOR DISCRIMINATIVE CARD |
| JP4426414 | Stretch film |
| JPH02229833 | FLAME RESISTANT POLYESTER MOLDING MATERIAL |
KISHINO TOMOYUKI
TOGASAKI JUNICHI
Next Patent: TWO-PACK CURABLE COMPOSITION FOR AUTOMOBILE BODY SEALER