POLYMER BLEND COMPOSITIONS
    2.
    发明申请
    POLYMER BLEND COMPOSITIONS 失效
    聚合物混合组合物

    公开(公告)号:US20120142866A1

    公开(公告)日:2012-06-07

    申请号:US12961551

    申请日:2010-12-07

    IPC分类号: C08L33/20

    摘要: Provided are filled polyimides that can be used in films and articles comprising the films. The films are useful in coverlay applications and have advantageous optical properties. Also provided are blends of polyimide precursor, polyacrylonitrile, and cellulosic polymer which can be used to obtain the filled polyimides.

    摘要翻译: 提供了可用于包括膜的膜和制品的填充聚酰亚胺。 这些膜在覆盖物应用中是有用的并且具有有利的光学性质。 还提供了可用于获得填充的聚酰亚胺的聚酰亚胺前体,聚丙烯腈和纤维素聚合物的共混物。

    DIMENSIONALLY STABLE POLYIMIDES, AND METHODS RELATING THERETO
    8.
    发明申请
    DIMENSIONALLY STABLE POLYIMIDES, AND METHODS RELATING THERETO 审中-公开
    尺寸稳定的POLYIMIDES,以及与此相关的方法

    公开(公告)号:US20110124806A1

    公开(公告)日:2011-05-26

    申请号:US12622977

    申请日:2009-11-20

    IPC分类号: C08L79/08 C08G73/10

    摘要: A film is disclosed, containing 40-100 weight percent polyimide. The polyimide is derived from a dianhydride component and a diamine component. The dianhydride component is at least 3,3′,4,4′-biphenyl tetracarboxylic dianhydride (BPDA), and optionally is also pyromellitic dianhydride (PMDA) in a mole ratio of 50-100:50-0 (BPDA:PMDA). The diamine component comprises 1,5-naphthalenediamine (1,5-ND) and 1,4-diaminobenzene (PPD) and/or meta phenylene diamine (MPD) in a mole ratio of 15-95:85-5 (1,5-ND:PPD+MPD). The films have exceptional high temperature storage modulus (elastic modulus) and exceptionally low high temperature creep (eplast).

    摘要翻译: 公开了一种含有40-100重量%聚酰亚胺的膜。 聚酰亚胺衍生自二酐组分和二胺组分。 二酐组分为至少3,3',4,4'-联苯四羧酸二酐(BPDA),并且任选还含有摩尔比为50-100:50-0(BPDA:PMDA)的均苯四酸二酐(PMDA)。 二胺组分包含摩尔比为15-95:85-5(1,5)的1,5-萘二胺(1,5-ND)和1,4-二氨基苯(PPD)和/或间苯二胺(MPD) -ND:PPD + MPD)。 这些薄膜具有优异的高温储存模量(弹性模量)和特别低的高温蠕变(eplast)。