PURPOSE: To obtain a polymer alloy which can give a food packaging container excellent in heat resistance, hot water resistance, etc., under specified sterilization conditions by blending a copolyester resin with a polycarbonate resin. ;CONSTITUTION: This polymer alloy comprises a copolyester resin and a polycarbonate resin. The copolyester resin has a solubility parameter [defined by the formula (wherein Δei is the evaporation energy of each atom or each group of atms; and Δvi is its molar vol.)] of 10.8-11.9 and is produced from an acid component comprising 2,6-naphthalenedicarboxylic acid and terephtalic acid or their lower-alkyl esters and a glycol component comprising 1,4- cyclohexanedimethanol and ethylene glycol. The polymer alloy, when molded by a suitable method, gives a food packaging container exhibiting excellent resistances to heat, hot water, and cold impact under thermal sterilization conditions of 85°C×30min and having sufficient gas barrier properties.;COPYRIGHT: (C)1996,JPO
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机译：用途：通过将共聚酯树脂与聚碳酸酯树脂混合，获得一种聚合物合金，该聚合物合金可在指定的灭菌条件下提供耐热性，耐热水性等优异的食品包装容器。 ;组成：该聚合物合金包含共聚酯树脂和聚碳酸酯树脂。共聚酯树脂具有溶解度参数[由式定义（其中，Δe i 是每个原子或每组原子的蒸发能;而Δv i 其摩尔体积）]为10.8-11.9，由包含2，6-萘二甲酸和对苯二甲酸或它们的低级烷基酯的酸组分和包含1，4-环己烷二甲醇和乙二醇的二醇组分制备。当通过合适的方法模制时，该聚合物合金使食品包装容器在85°C×30min的热灭菌条件下表现出优异的耐热，耐热水和抗冷冲击性，并具有足够的阻气性。 1996年，日本特许厅
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