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    Method for producing aqueous ethylene-vinyl alcohol copolymer composition
    2.
    发明公开
    Method for producing aqueous ethylene-vinyl alcohol copolymer composition 有权
    一种用于乙烯 - 乙烯醇共聚物的含水组合物的制备方法

    公开(公告)号：EP1179546A1

    公开(公告)日：2002-02-13

    申请号：EP01306753.3

    申请日：2000-08-07

    申请人： KURARAY CO., LTD.

    发明人： Kawahara, Takaharu ,  Tuboi, Toshio ,  Ohara, Yukihiro

    IPC分类号： C08F8/12

    CPC分类号： C08F6/10 ,  C08F8/12 ,  C08F2800/10 ,  C08F2810/50 ,  C08J3/14 ,  C08J2323/08 ,  C08L29/00 ,  C08F218/08 ,  C08F210/02

    摘要： 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.

    摘要翻译： 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。

    Process for producing ethylene-vinyl alcohol copolymer resin, process for producing pellets and resin pellets
    5.
    发明公开
    Process for producing ethylene-vinyl alcohol copolymer resin, process for producing pellets and resin pellets 有权
    一种用于生产乙烯 - 乙烯醇共聚物树脂，过程粒料和树脂颗粒的制备方法

    公开(公告)号：EP1072616A2

    公开(公告)日：2001-01-31

    申请号：EP00115855.9

    申请日：2000-07-24

    申请人： Kuraray Co., Ltd.

    发明人： Kawahara, Takaharu ,  Kawai, Hiroshi ,  Tuboi, Toshio ,  Ohara, Yukihiro ,  Hikasa, Masao

    IPC分类号： C08F6/02 ,  C08F6/00 ,  C08F6/28 ,  C08L29/04 ,  B29B9/06

    CPC分类号： C08J3/12 ,  B29B9/06 ,  B29C47/0004 ,  B29C47/0014 ,  B29C47/0021 ,  B29C47/0023 ,  B29C47/003 ,  B29C47/761 ,  B29C47/762 ,  B29C2793/009 ,  B29K2029/04 ,  C08F6/005 ,  C08F6/02 ,  C08F6/28 ,  C08F210/02 ,  C08J2329/04 ,  C08K3/105 ,  C08K3/32 ,  C08K3/38 ,  C08K5/09 ,  C08L25/06 ,  C08L29/04 ,  C08L2666/04 ,  C08F216/06

    摘要： A process for producing an ethylene-vinyl alcohol copolymer resin, including feeding EVOH into an extruder, keeping the temperature of the melting resin in the extruder at 70 to 170°C, adjusting the amount of water in the extruder so that the water content right after being discharged from the extruder is 5 to 40 weight %, and extruding out the EVOH resin. The extruded EVOH resin is cut into EVOH pellets. Thereby, it is possible to obtain resin pellets in which no spherocrystals are observed in the center of the cross section of the resin when the cross section is observed by the use of a polarization microscope, or no lubricant is contained in the resin pellets, and the angle of repose is 23 ° or less when the resin pellets are laminated. Thus, it is possible to provide an ethylene-vinyl alcohol copolymer (EVOH) resin pellet having a reduced discharging load to the environment and capable of being fed into an extruder smoothly without being blocked, extruding stability, and thermal stability (long-run property).

    摘要翻译： 一种在乙烯 - 乙烯醇共聚物树脂的制造，包括在挤出机进料EVOH入，在70保持的熔融树脂的温度在挤出机中，以170℃，调节挤出机的水的量处理，以便做了含水量右 从挤出机中排出之后是5〜40重量％，和挤出了EVOH树脂。 将挤出的EVOH树脂被切割成EVOH颗粒。 从而，有可能获得其中没有球晶中观察到在树脂当截面观察-通过使用偏光显微镜或无润滑剂的的横截面的中心被包含在树脂颗粒的树脂颗粒，并 休止角为23°或更小。当树脂颗粒层叠。 因此，能够提供（与乙烯 - 乙烯醇共聚物（EVOH）树脂粒料具有减小的放电环境负荷，并且能够在挤出机中供入顺利而不会被阻挡，挤出稳定性和热稳定性的长期属性 ）。