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    • 6. 发明公开
    • Method for producing aqueous ethylene-vinyl alcohol copolymer composition
    • 一种用于乙烯 - 乙烯醇共聚物的含水组合物的制备方法
    • EP1179546A1
    • 2002-02-13
    • EP01306753.3
    • 2000-08-07
    • KURARAY CO., LTD.
    • Kawahara, TakaharuTuboi, ToshioOhara, Yukihiro
    • C08F8/12
    • C08F6/10C08F8/12C08F2800/10C08F2810/50C08J3/14C08J2323/08C08L29/00C08F218/08C08F210/02
    • Provided is a method for producing an aqueous ethylene-vinyl alcohol copolymer (EVOH) composition that ensures efficient removal of alcohol not worsening the environment in and around working areas. Also provided are EVOH pellets of the aqueous composition, which can be produced stably and can be washed rapidly. The production method comprises introducing an EVOH solution that contains at least 50 parts by weight, relative to 100 parts by weight of EVOH therein, of an alcohol having a boiling point of not higher than 100°C, into a vessel, and contacting it with water vapor in the vessel, thereby letting the alcohol out along with water vapor and taking the resulting aqueous EVOH composition that contains from 0 to 10 parts by weight of the alcohol and from 10 to 500 parts by weight of water, relative to 100 parts by weight of EVOH therein, out of the vessel. The EVOH pellets are obtained by cutting the aqueous EVOH composition obtained in the production method.
    • 提供了一种用于在wässrige乙烯 - 乙烯醇共聚物的制造方法(EVOH)的组合物做确保了有效除去醇的中和周围的工作区域不恶化的环境中。 因此要提供wässrige组合物,它可以稳定地制造,并且可以迅速洗涤的EVOH颗粒。 制造方法包括将的EVOH溶液并以重量计的EVOH含有至少50重量份,相对于100份其中,醇具有不高于100℃,沸点为容器中,并与接触它 水蒸汽在该容器中,由此让醇出沿与水蒸汽和重量的水(重量)的醇的和为10〜500份服用所得wässrigeEVOH组合物的确包含从0至10重量份,相对于100份 重量的EVOH其中,从容器中。 的EVOH颗粒通过切割在制造方法得到的EVOH组合物wässrige得到。