Linear and branched polyimide composition

    公开(公告)号:US11377521B2

    公开(公告)日:2022-07-05

    申请号:US16472143

    申请日:2017-12-29

    Abstract: A polyimide composition includes 1 to 99 weight percent, preferably 70 to 99 weight percent, more preferably 75 to 95 weight percent of a first polyimide; and 1 to 99 weight percent, preferably 1 to 30 weight percent, more preferably 2 to 25 weight percent of a second polyimide, wherein the first polyimide and the second polyimide are different, and wherein the polyimide composition has a melt flow rate that is greater than a melt flow rate of the first polyimide and less than a melt flow rate of the second polyimide; an apparent viscosity that is less than an apparent viscosity of the first polyimide and less than an apparent viscosity of the second polyimide; and a notched Izod impact strength that is greater than a notched Izod impact strength of the first polyimide and greater than a notched Izod impact strength of the second polyimide.

    METHODS FOR MEASURING PROPERTIES IN CROSSLINKED POLYCARBONATE
    16.
    发明申请
    METHODS FOR MEASURING PROPERTIES IN CROSSLINKED POLYCARBONATE 有权
    测量交联聚碳酸酯性能的方法

    公开(公告)号:US20160289378A1

    公开(公告)日:2016-10-06

    申请号:US15036552

    申请日:2014-11-14

    CPC classification number: C08G64/14 C08G64/42 C08K5/0066 G01N33/442 C08L69/00

    Abstract: Methods for measuring certain properties of a crosslinked polycarbonate are disclosed. The storage modulus of a crosslinked polycarbonate is measured over a specified temperature range, and the average magnitude of the storage modulus over that temperature range is obtained. The average magnitude can be correlated to both crosslinking within the polycarbonate, and to the flame performance of the crosslinked polycarbonate.

    Abstract translation: 公开了用于测量交联聚碳酸酯的某些性质的方法。 在特定的温度范围内测量交联聚碳酸酯的储能模量,并获得在该温度范围内的储能模量的平均值。 平均幅度可以与聚碳酸酯内的交联和交联聚碳酸酯的火焰性能相关。

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