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    • 4. 发明授权
    • Recycle process for polycondensation resins
    • 缩聚树脂的回收工艺
    • US06797803B2
    • 2004-09-28
    • US10372892
    • 2003-02-24
    • Kazushige InoueAkio IkedaTakato KimuraTomoaki ShimodaMasahiko Tatsumi
    • Kazushige InoueAkio IkedaTakato KimuraTomoaki ShimodaMasahiko Tatsumi
    • C08G6400
    • C08J11/06C08G64/307Y02W30/701
    • A method of recycling fusible polycondensation resin waste in a fusion polymerization apparatus is disclosed. The method of recycling polycondensation resins comprises adding polycondensation resin waste directly to a fusion polymerization apparatus to carry out the polycondensation reaction. The polycondensation resin waste may be supplied from any point of the polycondensation apparatus to carry out the exchange reaction and/or the polycondensation reaction between the resin being prepared in the apparatus and the resin waste supplied. The method may be carried out in a continuous fusion polycondensation system with more than one polymerization reactor connected in series. The polycondensation resin waste may be supplied from the outlet of a polymerization reactor during the initial stage of the polycondensation process (oligomerisation process) to carry out the exchange reaction and/or the polycondensation reaction between the resin waste and the resin being prepared in the later stage of the polycondensation process in a continuous fusion polycondensation apparatus with more than one polymerization reactor connected in series.
    • 公开了一种在熔融聚合设备中回收易熔缩树脂废料的方法。 缩聚缩聚树脂的方法包括将缩聚树脂废物直接加入熔融聚合装置进行缩聚反应。 缩聚树脂废物可以从缩聚装置的任何点供应,以进行交换反应和/或在装置中制备的树脂与供应的树脂废料之间的缩聚反应。 该方法可以在具有多于一个串联连接的聚合反应器的连续熔融缩聚体系中进行。 缩聚树脂废物可以在缩聚过程的初始阶段(低聚过程)从聚合反应器的出口供应,以进行树脂废料和后面制备的树脂之间的交换反应和/或缩聚反应 在具有多个串联的聚合反应器的连续熔融缩聚装置中缩聚过程的阶段。