Alkylene-linked aromatic polyimides
    31.
    发明授权
    Alkylene-linked aromatic polyimides 失效
    亚烷基连接的芳族聚酰亚胺

    公开(公告)号:US4024108A

    公开(公告)日:1977-05-17

    申请号:US615588

    申请日:1975-09-22

    IPC分类号: C08G73/10

    CPC分类号: C08G73/10 C08G73/105

    摘要: In accordance with a preferred embodiment of this invention, a family of alkylene-linked aromatic polyimides is synthesized. These polymers are thermally stable at a temperature of at least 400.degree. C. and processible in conventional thermoplastic processing equipment. Such new and useful polymers are produced by employing an alkylene-linked dixylene which is oxidized and dehydrated to form the corresponding dianhydride. This alkylene-linked dianhydride is then reacted, through a condensation polymerization reaction, with any of many known diamine terminated compounds to form the subject polyimide resins.

    摘要翻译: 根据本发明的优选实施方案,合成一系列亚烷基连接的芳族聚酰亚胺。 这些聚合物在至少400℃的温度下是热稳定的,并且在常规热塑性加工设备中是可加工的。 这种新的和有用的聚合物通过使用被氧化和脱水以形成相应的二酐的亚烷基连接的二异辛烯来制备。 然后通过缩聚反应将该亚烷基连接的二酐与许多已知的二胺封端的化合物中的任何一种反应,形成目标聚酰亚胺树脂。

    Process and products of purification of anhydrosugar alcohols
    32.
    发明授权
    Process and products of purification of anhydrosugar alcohols 有权
    脱氢葡萄糖醇的纯化方法和产物

    公开(公告)号:US06670033B1

    公开(公告)日:2003-12-30

    申请号:US09857574

    申请日:2001-11-27

    IPC分类号: D02G300

    摘要: A process for the formation of a purified anhydrosugar alcohol is disclosed, whereby the resultant purified anhydrosugar alcohol has a purity of at least 99.8% and is substantially colorless. The anhydrosugar alcohol is purified by distillation, recrystallization from methanol, ethanol or ethylene glycol, melt recrystallization, or a combination thereof. Preferably, the purification is by distillation followed by recrystallization from methanol, ethanol or ethylene glycol. A test for determining the purity of the anhydrosugar alcohol is disclosed, wherein the color of the anhydrosugar alcohol after annealing at a temperature of at least 260° C. for at least four hours is examined. Alternatively, purity can be determined by examination of ultraviolet (UV) transmittance of the purified anhydrosugar alcohol at various wavelengths. The purified anhydrosugar alcohol may be incorporated into a polymer such as a polyester, which may in turn be used to form such articles of manufacturing as containers, optical disks, fibers, sheets and films.

    摘要翻译: 公开了形成纯化的脱水葡萄糖醇的方法,由此得到的纯化的脱水葡萄糖醇的纯度至少为99.8%,基本上是无色的。 通过蒸馏纯化脱水葡萄糖醇,从甲醇,乙醇或乙二醇中重结晶,熔融重结晶或其组合。 优选地,通过蒸馏进行纯化,然后从甲醇,乙醇或乙二醇中重结晶。 公开了用于测定脱水葡萄糖醇纯度的试验,其中在至少260℃的温度下退火至少4小时后的脱水葡萄糖醇的颜色被检查。 或者,可以通过检查各种波长的纯化的脱水葡萄糖醇的紫外线(UV)透射率来确定纯度。 纯化的脱水葡萄糖醇可以掺入聚合物如聚酯中,聚酯可以依次用于形成容器,光盘,纤维,片和薄膜等制造品。

    Polyesters including isosorbide as a comonomer and methods for making
same
    34.
    发明授权
    Polyesters including isosorbide as a comonomer and methods for making same 失效
    聚酯包括异山梨醇作为共聚单体及其制备方法

    公开(公告)号:US5959066A

    公开(公告)日:1999-09-28

    申请号:US64844

    申请日:1998-04-23

    CPC分类号: C08G63/672 C08G63/80

    摘要: An isotropic polyester polymer and method for making the polyester is prepared by (1) combining in a reactor a monomer containing a terephthaloyl moiety; optionally, one or more other monomers containing an aromatic diacid moiety; a monomer comprising an ethylene glycol moiety; a monomer containing an isosorbide moiety; optionally, one or more other monomers containing a diol moiety; and optionally, a monomer containing a diethylene glycol moiety; with a condensation catalyst suitable for condensing aromatic diacids and glycols; and (2) heating the monomers and catalyst to polymerize the monomers to yield a polyester having an inherent viscosity of at least about 0.35 dL/g.

    摘要翻译: 各向同性聚酯聚合物和制造聚酯的方法通过以下步骤制备:(1)在反应器中将含有对苯二酰基部分的单体合并; 任选地,一种或多种含有芳族二酸部分的其它单体; 包含乙二醇部分的单体; 含有异山梨醇部分的单体; 任选地,一种或多种含有二醇部分的其它单体; 和任选地,含有二甘醇部分的单体; 具有适用于缩合芳族二酸和二醇的缩合催化剂; 和(2)加热单体和催化剂以聚合单体以产生具有至少约0.35dL / g的特性粘度的聚酯。

    Melt processable poly(ester-amide) capable of forming an anisotropic
melt containing an aromatic moiety capable of forming an amide linkage
    35.
    发明授权
    Melt processable poly(ester-amide) capable of forming an anisotropic melt containing an aromatic moiety capable of forming an amide linkage 失效
    可形成含有可形成氨基酸连接的芳香族环境的各向异性熔体的可熔融处理聚酯(酯 - 酰胺)

    公开(公告)号:US5204443A

    公开(公告)日:1993-04-20

    申请号:US687801

    申请日:1991-04-19

    IPC分类号: C08G69/44 D01F6/82

    CPC分类号: C08G69/44

    摘要: A melt processable poly(ester-amide) which is capable of forming an anisotropic melt phase is provided. A poly(ester-amide) of the present invention may have recurring units of: (a) 4-hydroxybenzoyl moiety, (b) 6-oxy-2-naphthoyl moiety, (c) 4,4'-biphenol moiety, (d) terephthaloyl moiety, and (e) an aromatic moiety capable of forming an amide linkage in the proportions indicated. Preferably, the moiety capable of forming an amide linkage is derived from p-aminophenol, p-phenylenediamine, N-acetyl-p-aminophenol, etc. The resulting poly(ester-amide) is capable of undergoing melt-processing in the temperature range of from about 300.degree. to about 400.degree. C.

    Melt processable thermotropic wholly aromatic polyester containing
6-hydroxy-2-naphthoic acid moieties
    36.
    发明授权
    Melt processable thermotropic wholly aromatic polyester containing 6-hydroxy-2-naphthoic acid moieties 失效
    含有6-羟基-2-萘甲酸部分的可熔融加工的热致全芳族聚酯

    公开(公告)号:US5171823A

    公开(公告)日:1992-12-15

    申请号:US814340

    申请日:1991-12-27

    IPC分类号: C08G63/60

    CPC分类号: C08G63/605

    摘要: The present invention discloses a wholly aromatic, melt processable polyester which is comprised of recurring moieties derived from the following compounds: 2,6-naphthalenedicarboxylic acid, 4-hydroxybenzoic acid, an aromatic dihydroxy compound, and 6-hydroxy-2-naphthoic acid. The resulting wholly aromatic polyester is capable of forming a thermotropic melt phase at temperatures below approximately 350.degree. C. and most preferably at temperatures below approximately 290.degree. C.

    摘要翻译: 本发明公开了一种全芳族的可熔融加工的聚酯,其由衍生自以下化合物的重复部分组成:2,6-萘二甲酸,4-羟基苯甲酸,芳族二羟基化合物和6-羟基-2-萘甲酸。 所得的全芳族聚酯能够在低于约350℃的温度下形成热致熔融相,最优选在低于约290℃的温度下形成热致熔体相。

    Process for producing polyarylate having low color
    37.
    发明授权
    Process for producing polyarylate having low color 失效
    具有低颜色的多芳基化合物的制备方法

    公开(公告)号:US5164478A

    公开(公告)日:1992-11-17

    申请号:US744604

    申请日:1991-08-13

    IPC分类号: C08G63/195 C08G63/80

    CPC分类号: C08G63/80 C08G63/195

    摘要: A process for preparing polyarylates having low color wherein isophthalic acid, terephthalic acid, and bisphenol A are melt polymerized to form a prepolymer, the prepolymer is crystallized, and then further polymerized in the solid state by heating under an inert gas flow, e.g. nitrogen. Crystallization is accomplished by adding the amorphous prepolymer in powder or pellet form to a organic crystallizing medium such as 2-ethoxyethyl acetate or hexyl acetate. This process produces a polymer having low color content. The crystallized polymer may be made amorphous by melting. This amorphous polymer is useful in applications requiring a transparent, colorless plastic.

    摘要翻译: 制备具有低色度的多芳基化合物的方法,其中间苯二甲酸,对苯二甲酸和双酚A熔融聚合以形成预聚物,预聚物结晶,然后通过在惰性气体流下,例如, 氮。 通过将粉末或颗粒形式的无定形预聚物加入到有机结晶介质如乙酸2-乙氧基乙酯或乙酸己酯中来实现结晶。 该方法产生具有低颜色含量的聚合物。 结晶的聚合物可以通过熔化而制成无定形的。 该无定形聚合物可用于需要透明无色塑料的应用中。

    Process for the expeditious formation of a high strength shaped article
of poly(6-oxy-2-naphthoate-4-oxybenzoate)
    38.
    发明授权
    Process for the expeditious formation of a high strength shaped article of poly(6-oxy-2-naphthoate-4-oxybenzoate) 失效
    用于快速形成聚(6-氧-2-萘甲酸-4-羟基苯甲酸酯)的高强度成型制品的方法

    公开(公告)号:US4574066A

    公开(公告)日:1986-03-04

    申请号:US583643

    申请日:1984-02-27

    CPC分类号: C08J5/18 D01F6/84 C08J2367/00

    摘要: Melt extruded poly(6-oxy-2-naphthoate-4-oxybenzoate) shaped articles of relatively high strength and modulus are produced in a lesser period of time than commonly heretofore required in the prior art. The required polymer is capable of exhibiting an anisotropic melt phase and is formed through the reaction of 6-acetoxy-2-naphthoic acid and 4-acetoxybenzoic acid under a combination of melt polymerization conditions which surprisingly has been found to yield a shaped article following melt extrusion which may be heat strengthened in an unusually brief period of time (i.e. two hours or less). The polymerization is catalyzed by a potassium salt (e.g. potassium acetate), and the polymerization conditions require a relatively highly elevated final polymerization temperature. Substantially all of the acetic acid by-product is removed from the polymerization zone prior to concluding the polymerization under reduced pressure conditions. The process of the present invention through the reduction of the required heat strengthening time accordingly makes possible a substantial productivity increase for a given production facility.

    摘要翻译: 熔融挤出的聚(6-氧基-2-萘甲酸-4-羟基苯甲酸酯)成形制品具有相对高的强度和模量,在比现有技术中通常要求的更短的时间内生产。 所需的聚合物能够显示出各向异性的熔融相,并且通过在熔融聚合条件的组合下通过6-乙酰氧基-2-萘甲酸和4-乙酰氧基苯甲酸的反应而形成,其令人惊奇地发现在熔融后产生成型制品 挤出可能在非常短暂的时间段内(即两小时或更短)热加强。 聚合由钾盐(例如乙酸钾)催化,并且聚合条件需要相当高的最终聚合温度。 在减压条件下聚合结束之前,基本上将所有的乙酸副产物从聚合区中除去。 因此,通过减少所需的热强化时间,本发明的方法使得对于给定的生产设备可以显着提高生产率。

    Melt processable polyester capable of forming an anisotropic melt
comprising a relatively low concentration of 6-oxy-2-naphthoyl moiety,
4-oxybenzoyl moiety, 4,4'-dioxybiphenyl moiety, and terephthaloyl moiety
    39.
    发明授权
    Melt processable polyester capable of forming an anisotropic melt comprising a relatively low concentration of 6-oxy-2-naphthoyl moiety, 4-oxybenzoyl moiety, 4,4'-dioxybiphenyl moiety, and terephthaloyl moiety 失效
    能够形成各向异性熔体的可熔融加工的聚酯包括相对低浓度的6-氧-2-萘甲酰部分,4-氧基苯甲酰部分,4,4'-二氧联苯部分和对苯二甲酰部分

    公开(公告)号:US4473682A

    公开(公告)日:1984-09-25

    申请号:US485820

    申请日:1983-04-18

    IPC分类号: C08G63/60

    CPC分类号: C08G63/605

    摘要: The novel polyester of the present invention is capable of forming an anisotropic melt phase and may be prepared on a relatively economical basis. Such polyester includes a relatively low concentration of 6-oxy-2-naphthoyl moiety in combination with a more substantial concentration of 4-oxybenzoyl moiety. Other key moieties present are 4,4'-dioxybiphenyl moiety and terephthaloyl moiety. The polyester has been found to be capable of undergoing melt extrusion at a sufficiently low temperature to form quality high performance fibers, films, and three-dimensional shaped articles. Such product surprisingly has been found to be capable of exhibiting unusually high modulus characteristics in combination with other desirable properties.

    摘要翻译: 本发明的新型聚酯能够形成各向异性熔融相,并且可以在相对经济的基础上制备。 这种聚酯包括相对低浓度的6-氧-2-萘甲酰基部分与较高浓度的4-氧基苯甲酰基部分的组合。 存在的其它关键部分是4,4'-二氧联苯部分和对苯二酰部分。 已经发现聚酯能够在足够低的温度下进行熔体挤出以形成高质量的高性能纤维,薄膜和三维成形制品。 已经发现这种产品能够与其它所需性能相结合,能够显示异常高的模量特性。

    Process for preparing a polyester of hydroxy naphthoic acid and hydroxy
benzoic acid
    40.
    发明授权
    Process for preparing a polyester of hydroxy naphthoic acid and hydroxy benzoic acid 失效
    制备羟基萘甲酸和羟基苯甲酸的聚酯的方法

    公开(公告)号:US4429105A

    公开(公告)日:1984-01-31

    申请号:US468240

    申请日:1983-02-22

    CPC分类号: C08G63/065

    摘要: Provided is a method for preparing aromatic copolyesters of hydroxy naphthoic acid and hydroxy benzoic acid via an in situ esterification technique whereby there is no isolation of the esterified monomers. The process comprises reacting the aromatic hydroxy acid monomers with an agent such as acetic anhydride in order to esterify the hydroxy moieties and subsequently polymerizing the esterified hydroxy monomers without isolation thereof, all in the presence of from about 5 to 50 ppm iron. Advantageously, the process allows one to obtain a wholly aromatic polyester of high inherent viscosity and good melt stability while avoiding the time consuming step of having to isolate the esterified hydroxy monomers prior to polymerization.

    摘要翻译: 提供了通过原位酯化技术制备羟基萘甲酸和羟基苯甲酸的芳族共聚酯的方法,由此不分离酯化单体。 该方法包括使芳族羟基酸单体与例如乙酸酐的试剂反应,以酯化羟基部分,随后聚合酯化的羟基单体而不分离,所有这些都在约5至50ppm的铁存在下进行。 有利地,该方法允许获得高特性粘度和良好熔体稳定性的全芳族聚酯,同时避免在聚合之前必须分离酯化羟基单体的耗时步骤。