Polyethermide resins useful for high temperature applications, and related processes
    2.
    发明申请
    Polyethermide resins useful for high temperature applications, and related processes 审中-公开
    用于高温应用的聚醚醚树脂及相关工艺

    公开(公告)号:US20120082833A1

    公开(公告)日:2012-04-05

    申请号:US12924666

    申请日:2010-09-30

    IPC分类号: B32B5/00 C08G73/10

    摘要: A polyetherimide resin is described herein. The resin includes a structure of repeating units of the formula (I) wherein each aromatic ring in the structure can be substituted with at least one halogen atom, nitro group, cyano group, alkyl group, cycloalkyl group, or aryl group. Another embodiment relates to a method for preparing a polyetherimide polymer. The method includes the step of reacting metaphenylenediamine bis(4-nitrophthalimide) with a bisphenolic mixture of a salt of bisphenol A and a salt of an arylcyano-modified bisphenol.

    摘要翻译: 本文描述了聚醚酰亚胺树脂。 树脂包括式(I)的重复单元的结构,其中结构中的每个芳环可被至少一个卤素原子,硝基,氰基,烷基,环烷基或芳基取代。 另一个实施方案涉及一种制备聚醚酰亚胺聚合物的方法。 该方法包括使间苯二胺双(4-硝基邻苯二甲酰亚胺)与双酚A的盐和芳基氰基改性双酚的盐的双酚混合物反应的步骤。

    Method for preparing diaryl carbonates employing .beta.-diketone salts
    5.
    发明授权
    Method for preparing diaryl carbonates employing .beta.-diketone salts 失效
    使用β-二酮盐制备碳酸二芳基酯的方法

    公开(公告)号:US5908952A

    公开(公告)日:1999-06-01

    申请号:US823784

    申请日:1997-03-24

    CPC分类号: C07C68/005

    摘要: Hydroxyaromatic compounds such as phenol are converted to diaryl carbonates by reaction with oxygen and carbon monoxide in the presence of a catalyst package which comprises a Group VIIIB metal, preferably palladium, salt of at least one aliphatic .beta.-diketone such as 2,4-pentanedione. The catalyst package also preferably comprises an inorganic cocatalyst, an organic cocatalyst and a bromide or chloride, preferably bromide, source such as a hexaalkylguanidinium bromide. The use of the .beta.-diketone salt confers such advantages as long shelf life under normal storage conditions, high activity upon recycle and capability of carbonylation at relatively low temperatures.

    摘要翻译: 羟基芳族化合物如苯酚通过与氧和一氧化碳反应在催化剂包的存在下转化为碳酸二芳基酯,催化剂包含ⅦB族金属,优选至少一种脂族β-二酮的钯盐,例如2,4-戊二酮 。 催化剂包装还优选包含无机助催化剂,有机助催化剂和溴化物或氯化物,优选溴化物源,例如六烷基溴化胍。 使用β-二酮盐具有在正常储存条件下长保存期限,循环时高活性和在较低温度下羰基化能力的优点。

    Method for preparing diaryl carbonates employing hexaalkylguanidinium
halides
    6.
    发明授权
    Method for preparing diaryl carbonates employing hexaalkylguanidinium halides 失效
    使用六烷基囟鎓卤化物制备碳酸二芳基酯的方法

    公开(公告)号:US5898079A

    公开(公告)日:1999-04-27

    申请号:US929000

    申请日:1997-09-12

    IPC分类号: C07C68/00

    CPC分类号: C07C68/005

    摘要: Hydroxyaromatic compounds such as phenol are converted to diaryl carbonates by reaction with oxygen and carbon monoxide in the presence of a catalyst package which typically comprises a group VIIIB metal or compound thereof, an inorganic cocatalyst, an organic cocatalyst and a hexaalkylguanidinium bromide or chloride, preferably bromide. The use of the hexaalkylguanidinium salt causes an increase in the yield of diaryl carbonate without a decrease in selectivity.

    摘要翻译: 在通常包含第VIIIB族金属或其化合物,无机助催化剂,有机助催化剂和六烷基溴化胍或氯化物的催化剂包的存在下,通过与氧和一氧化碳反应,将羟基芳族化合物如苯酚转化为碳酸二芳基酯 溴化物。 六烷基胍盐的使用导致碳酸二芳基酯的收率增加,而不会降低选择性。

    Method for preparing diaryl carbonates with improved selectivity
    7.
    发明授权
    Method for preparing diaryl carbonates with improved selectivity 失效
    制备改性选择性碳酸二芳基酯的方法

    公开(公告)号:US5760272A

    公开(公告)日:1998-06-02

    申请号:US823785

    申请日:1997-03-24

    CPC分类号: C07C68/005

    摘要: Hydroxyaromatic compounds such as phenol are converted to diaryl carbonates by reaction with oxygen and carbon monoxide in the presence of a catalyst package and an added diluent free from active hydrogen. The preferred catalyst packages comprise a Group VIIIB metal or salt thereof, an inorganic cocatalyst, and organic cocatalysts and a bromide or chloride source. The amount of added diluent is an effective amount to improve selectivity to diaryl carbonate. Preferred diluents are diphenyl carbonate and N-methylpyrrolidone.

    摘要翻译: 在催化剂封装和不含活性氢的添加稀释剂的存在下,通过与氧气和一氧化碳反应,将羟基芳族化合物如苯酚转化为碳酸二芳基酯。 优选的催化剂组合物包含VIIIB族金属或其盐,无机助催化剂和有机助催化剂以及溴化物或氯化物源。 添加的稀释剂的量是改善对碳酸二芳基酯的选择性的有效量。 优选的稀释剂是碳酸二苯酯和N-甲基吡咯烷酮。

    Method of purifying diphenyl carbonate-phenol adduct
    8.
    发明授权
    Method of purifying diphenyl carbonate-phenol adduct 失效
    碳酸二苯酯加成物的净化方法

    公开(公告)号:US5756801A

    公开(公告)日:1998-05-26

    申请号:US797068

    申请日:1997-02-10

    IPC分类号: C07C68/08 C07C69/96

    CPC分类号: C07C68/08

    摘要: Adducts of hydroxyaromatic compounds such as phenol and diaryl carbonates such as diphenyl carbonate are washed with a washing composition comprising a major proportion, typically about 90%, of the hydroxyaromatic compound and a minor proportion, typically about 10%, of the diaryl carbonate.

    摘要翻译: 羟基芳族化合物如苯酚和碳酸二芳基酯如碳酸二苯酯的加合物用包含主要比例(通常约90%)的羟基芳族化合物和较小比例,通常约10%的碳酸二芳基酯的洗涤组合物洗涤。 !