| 摘要 |
PROBLEM TO BE SOLVED: To provide a tube excellent in a raw material cost, without damaging the excellent strong points of a copolyester such as flexibility, transparency, chemical resistance, etc. SOLUTION: This tube uses the copolyester. Polyesters constituting the copolyester comprises monomer compositions containing≥90 mol% aromatic dicarboxylic acid and long chain aliphatic dicarboxylic acid as its dicarboxylic acid component, and also containing as its glycol component,≥90 mol% ethylene glycol, 1,3-propane diol or 1,4-butane diol. The copolyester has <20°C Tg glass transition temperature and 40-100°C rangeΔTc, crystallization rate. COPYRIGHT: (C)2007,JPO&INPIT
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