Dimensionally stable polyester melt blown web
    1.
    发明授权
    Dimensionally stable polyester melt blown web 失效
    尺寸稳定的聚酯熔喷网

    公开(公告)号:US5010165A

    公开(公告)日:1991-04-23

    申请号:US360806

    申请日:1989-06-02

    IPC分类号: C08G63/16 C08L67/02

    摘要: A dimensionally stable polyester melt blown web composition is disclosed. The polyester melt blown web is obtained by contacting the web with a solvent, and drying the web. The solvents which are used have total solubility parameters (S.sub.o) of 8.5 to 12.0 (cal/cm.sup.3).sup.1/2, solubility parameter component due to hydrogen bonding (S.sub.h) of 0.5 to 5.5 (cal/cm.sup.3).sup.1/2 and solubility parameter component due to polar forces (S.sub.p) of 0.5 to 7.0 (cal/cm.sup.3).sup.1/2). The polyesters used for such melt blown webs include poly(ethylene-terephthalate), poly(cyclohexylene dimethylene terephthalate) and blends and copolymers of these polymers.

    摘要翻译: 公开了尺寸稳定的聚酯熔喷纤维网组合物。 聚酯熔喷纤维网通过将纤维网与溶剂接触并干燥纤维网获得。 使用的溶剂的总溶解度参数(So)为8.5〜12.0(cal / cm 3)1/2,由于氢键(Sh)为0.5〜5.5(cal / cm 3)1/2的溶解度参数成分和溶解度参数 由于极性力(Sp)为0.5〜7.0(cal / cm 3)1/2)。 用于这种熔喷纤维网的聚酯包括聚(对苯二甲酸乙二醇酯),聚(亚环己基二亚甲基对苯二甲酸酯)和这些聚合物的共混物和共聚物。

    High heat deflection temperature blends of certain polyesters with
polyetherimides
    2.
    发明授权
    High heat deflection temperature blends of certain polyesters with polyetherimides 失效
    某些聚酯与聚醚酰亚胺的高热变形温度混合

    公开(公告)号:US5439987A

    公开(公告)日:1995-08-08

    申请号:US251761

    申请日:1994-05-31

    IPC分类号: C08L67/02 C08L79/08 C08L77/00

    CPC分类号: C08L67/02 C08L79/08

    摘要: A thermoplastic molding composition having a high neat deflection temperature but a relatively low melt extrusion temperature is formed by blending a polyetherimide with about 35 to about 80 weight percent of a copolyester of terephthalic and/or isophthalic acid and a glycol component comprising ethylene glycol and up to about 60 mol percent of 1,4-cyclohexanedimethanol. The blend also has a high flexural modulus and can be used to form plastic articles that can be molded at moderate temperatures but retain flexural strength at elevated temperatures. Certain compositions of the invention are clear, single phase solid solutions.

    摘要翻译: 通过将聚醚酰亚胺与约35至约80重量%的对苯二甲酸和/或间苯二甲酸的共聚酯和包含乙二醇和二醇的二元醇组分共混而形成具有高纯度变形温度但相对低的熔融挤出温度的热塑性模塑组合物 至约60mol%的1,4-环己烷二甲醇。 该共混物还具有高的弯曲模量,并且可用于形成可在中等温度下成型但在升高的温度下保持弯曲强度的塑料制品。 本发明的某些组合物是澄清的单相固溶体。