Rotomolding processes for poly(aryl ketones) and other high temperature polymers

    公开(公告)号:US10899047B2

    公开(公告)日:2021-01-26

    申请号:US14387569

    申请日:2013-03-05

    Applicant: Arkema Inc.

    Abstract: A method of manufacturing an article comprises rotomolding at least one polymer comprising a poly(aryl ketone), such as PEKK, under conditions effective to produce a rotomolded article having an impact value of at least 35 in-lbs. A rotomolding method comprises heating the mold for a period of time after the internal air temperature of the mold reaches the highest melting point of the at least one polymer. Methods also include using a PEKK powder with a bulk density of at least about 400 g/L. Rotomolded articles of the present invention have impact values of between about 40 in-lbs to about 95 in-lbs, and in particular embodiments greater than about 95 in-lbs.

    ROTOMOLDING PROCESSES FOR POLY (ARYL KETONES) AND OTHER HIGH TEMPERATURE POLYMERS
    4.
    发明申请
    ROTOMOLDING PROCESSES FOR POLY (ARYL KETONES) AND OTHER HIGH TEMPERATURE POLYMERS 审中-公开
    聚丙烯(ARYL KETONES)和其他高温聚合物的旋转工艺

    公开(公告)号:US20150079378A1

    公开(公告)日:2015-03-19

    申请号:US14387569

    申请日:2013-03-05

    Applicant: Arkema Inc.

    Abstract: A method of manufacturing an article comprises rotomolding at least one polymer comprising a poly(aryl ketone), such as PEKK, under conditions effective to produce a rotomolded article having an impact value of at least 35 in-lbs. A rotomolding method comprises heating the mold for a period of time after the internal air temperature of the mold reaches the highest melting point of the at least one polymer. Methods also include using a PEKK powder with a bulk density of at least about 400 g/L. Rotomolded articles of the present invention have impact values of between about 40 in-lbs to about 95 in-lbs, and in particular embodiments greater than about 95 in-lbs.

    Abstract translation: 制造制品的方法包括在有效地产生具有至少35磅/英寸的冲击值的滚塑制品的条件下,将包含聚(芳基酮)的至少一种聚合物如PEKK滚塑。 滚塑法包括在模具的内部空气温度达到至少一种聚合物的最高熔点之后将模具加热一段时间。 方法还包括使用堆积密度为至少约400g / L的PEKK粉末。 本发明的滚塑制品具有在约40磅/吋至约95英吋之间的冲击值,在具体实施方案中具有大于约95英寸/磅的冲击值。

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