Method for increasing the molecular weight of a polyester granulate by using its residual heat
    9.
    发明授权
    Method for increasing the molecular weight of a polyester granulate by using its residual heat 有权
    通过使用其余热来提高聚酯颗粒的分子量的方法

    公开(公告)号:US08877107B2

    公开(公告)日:2014-11-04

    申请号:US13246051

    申请日:2011-09-27

    IPC分类号: C08G63/88 C08G63/80 B01J19/18

    摘要: The present invention relates to increasing the molecular weight during a thermal treatment of polyester in combination with a latent heat granulation. With the newly-developed method, an SSP (Solid State Postcondensation) can be directly combined with an underwater granulation. The method differs from a conventional solid state postcondensation by an increase in the molecular weight being possible without additional heat input and hence only by using the residual heat and the crystallization heat present. A characterizing element is improved water separation and dehumidification during the granulation. Only in this way is an increase in viscosity possible even with a small granulate of an average particle weight less than 20 mg.

    摘要翻译: 本发明涉及在热处理聚酯时与潜热造粒相结合的增加分子量。 采用新开发的方法,SSP(固态缩聚)可直接与水下造粒结合。 该方法不同于常规的固态缩合,通过在没有额外的热输入的情况下分子量的增加是可能的,因此仅通过使用存在的残余热和结晶热。 特征元素在造粒期间改善了水分离和除湿。 只有这样,即使使用平均颗粒重量小于20mg的小颗粒也可以增加粘度。

    METHOD FOR INCREASING THE MOLECULAR WEIGHT OF A POLYESTER GRANULATE BY USING ITS RESIDUAL HEAT
    10.
    发明申请
    METHOD FOR INCREASING THE MOLECULAR WEIGHT OF A POLYESTER GRANULATE BY USING ITS RESIDUAL HEAT 有权
    通过使用残留热量增加聚酯纤维素分子量的方法

    公开(公告)号:US20120077951A1

    公开(公告)日:2012-03-29

    申请号:US13246051

    申请日:2011-09-27

    IPC分类号: C08G63/88 C08G63/183

    摘要: The present invention relates to increasing the molecular weight during a thermal treatment of polyester in combination with a latent heat granulation. With the newly-developed method, an SSP (Solid State Postcondensation) can be directly combined with an underwater granulation. The method differs from a conventional solid state postcondensation by an increase in the molecular weight being possible without additional heat input and hence only by using the residual heat and the crystallisation heat present. A characterising element is improved water separation and dehumidification during the granulation. Only in this way is an increase in viscosity possible even with a small granulate of an average particle weight less than 20 mg.

    摘要翻译: 本发明涉及在热处理聚酯时与潜热造粒相结合的增加分子量。 采用新开发的方法,SSP(固态缩聚)可直接与水下造粒结合。 该方法不同于常规的固态缩合,通过增加分子量可以在没有额外的热量输入的情况下,因此仅通过使用剩余热量和存在的结晶热量。 特征元素在造粒期间改善了水分离和除湿。 只有这样,即使使用平均颗粒重量小于20mg的小颗粒也可以增加粘度。