| 摘要 |
<p>PURPOSE:To obtain a hollow molding with excellent transparency, molding property, and gas barrier property by highly drawing copolyester through esterification of specific dicarboxylic acid and specific dihydroxy compound. CONSTITUTION:A hollow molding 1 is formed by highly drawing copolyester of being 0.5 - 1.5dl/g in its limiting viscosity [eta] formed through esterification of dicarboxylic acid and dihydroxy compound as shown in formula (I) in which the drawing index is 130cm or more. Besides, 85 - 99mol% of the dicarboxylic acid is terephthalic acid, 1 - 15mol% is isophthalic acid, 80 - 99mol% of the dihydroxy compound is ethyleneglycol, 1 - 20mol% is dihydroxyethoxyresorcinol, and the dihydroxy compound contains a multi-functional hydroxy compound having at least three hydroxy groups of 0.05 - 0.3mol pts. with respect to dicarboxylic acid 100mol pts.</p> |
