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    • 10. 发明申请
    • PROCESS FOR PREPARING A STABILIZED POLYESTER
    • 制备稳定聚酯的方法
    • WO2002079310A2
    • 2002-10-10
    • PCT/EP2002/003006
    • 2002-03-19
    • CIBA SPECIALTY CHEMICALS HOLDING INC.SIMON, DirkLAZZARI, DarioANDREWS, Stephen, MArkHERBST, Heinz
    • SIMON, DirkLAZZARI, DarioANDREWS, Stephen, MArkHERBST, Heinz
    • C08K5/00
    • C08K5/0008C08G63/20C08L67/02Y10T428/1334Y10T428/1352Y10T428/139C08L33/00
    • The present invention discloses a process for the preparation of a stabilized polyester that is low in the generation of aldehydes which comprises reacting one or more diacids with one or more diols in an esterification process, and/or one or more diesters with one or more diols in a transesterification process in the presence of an effective amount of a stabilizer selected from the group consisting of (a) a polyhydric alcohol which is for example poly(ethylene-co-vinyl alcohol), poly(styrene-co-allyl alcohol), maltitol, isomalt, sorbitol, xylitol, sucrose, mucic acid dibutylester, mucic acid di(phenyl-1-ethyl)ester, pentaerythritol or dipentaerythritol; (b) a compound of the formula II, which is for example di-iso-octyl-phosphinic acid; (c) a sterically hindered amine which is for example Tinuvin 123 or Tinuvin 622; (d) a polyacrylamide or a cationic acrylamide copolymer; or (e) a hydroxyamine and/or a nitrone. Such polyesters, for example PET, when extrusion compounded exhibit a lower residual acetaldehyde content than does PET alone when similarly treated. The invention pertains to any polyester used in the manufacture of bottles or containers which in turn are used to store consumer materials, especially food, pharmaceuticals, beverages and most especially water.
    • 本发明公开了一种制备稳定的聚酯的方法,所述聚酯的生成量低,其包括在酯化过程中使一种或多种二酸与一种或多种二醇反应,和/或一种或多种二酯与一种或多种二醇 在有效量的选自以下的稳定剂的酯交换过程中:(a)多元醇,例如聚(乙烯 - 共 - 乙烯醇),聚(苯乙烯 - 共 - 烯丙醇), 麦芽糖醇,异麦芽酮糖醇,山梨糖醇,木糖醇,蔗糖,粘酸二丁酯,粘酸二(苯基-1-乙基)酯,季戊四醇或二季戊四醇; (b)式II化合物,其为例如二异辛基次膦酸; (c)空间位阻胺,例如Tinuvin 123或Tinuvin 622; (d)聚丙烯酰胺或阳离子丙烯酰胺共聚物; 或(e)羟胺和/或硝酮。 当类似处理时,当挤出复合时,这种聚酯,例如PET显示出比单独的PET更低的残留乙醛含量。 本发明涉及用于制造瓶子或容器的任何聚酯,其又用于储存消费材料,特别是食品,药物,饮料,特别是水。