Process for producing aromatic polyesters having increased degrees of
polymerization
    1.
    发明授权
    Process for producing aromatic polyesters having increased degrees of polymerization 失效
    具有增加聚合度的芳族聚酯的制备方法

    公开(公告)号:US4291152A

    公开(公告)日:1981-09-22

    申请号:US133797

    申请日:1980-03-25

    CPC分类号: C08G63/6856 C08G63/916

    摘要: A process for producing an aromatic polyester having an increased degree of polymerization. The process comprises reacting a hydroxyl-terminated, substantially linear, fiber-forming aromatic polyester having an aromatic dicarboxylic acid as a main acid component at an elevated temperature with a bi-cyclic imino ester compound of formula [I] or formula [II]. According to the process, the molecular chains of the aromatic polyester are bonded to each other by the terminal hydroxyl groups thereof to form rapidly the aromatic polyester having an increased degree of polymerization.

    摘要翻译: 具有增加聚合度的芳族聚酯的制造方法。 该方法包括在升高的温度下使具有芳族二羧酸作为主要酸成分的羟基封端的,基本上直链的成纤的芳族聚酯与式[I]或式[II]的双环亚氨基酯化合物反应。 根据该方法,芳族聚酯的分子链通过其末端羟基彼此键合,以快速形成具有增加的聚合度的芳族聚酯。

    Process for producing aromatic polyesters having an increased degree of
polymerization
    3.
    发明授权
    Process for producing aromatic polyesters having an increased degree of polymerization 失效
    具有增加聚合度的芳族聚酯的制备方法

    公开(公告)号:US4331800A

    公开(公告)日:1982-05-25

    申请号:US144036

    申请日:1980-04-28

    IPC分类号: C08G69/44 C08G63/68

    CPC分类号: C08G69/44

    摘要: A process for producing an aromatic polyester having an increased degree of polymerization, which comprises reacting a substantially linear, fiber forming aromatic polyester containing terminal hydroxyl groups and having an aromatic dicarboxylic acid as a main acid component at an elevated temperature with a bis-cyclic imino ether compound of the formula [I] such as 2,2'-bis(2-oxazoline), 2,2'-bis(5,6-dihydro-4H-1,3-oxadine) thereby bonding the molecular chains of the aromatic polyester to each other by the terminal carboxyl groups thereof to rapidly form said aromatic polyester having an increased degree of polymerization.Said reaction can be carried out under atmospheric or elevated pressure.According to the process, an aromatic polyester having a low terminal caboxyl concentration and an increased degree of polymerization can be obtained.

    摘要翻译: 一种具有增加聚合度的芳族聚酯的制备方法,该方法包括使具有末端羟基并且具有芳族二羧酸作为主要酸成分的基本上直链的形成纤维的芳族聚酯在升高的温度下与双环亚氨基 醚化合物,如2,2'-双(2-恶唑啉),2,2'-双(5,6-二氢-4H-1,3-恶嗪等),由此将分子链 芳族聚酯通过其末端羧基彼此之间,以快速形成具有增加的聚合度的所述芳族聚酯。 所述反应可以在大气压或高压下进行。 根据该方法,可以得到具有低端甲氧基浓度和增加聚合度的芳族聚酯。

    Process for producing shaped polyamide articles
    8.
    发明授权
    Process for producing shaped polyamide articles 失效
    生产成型聚酰胺制品的方法

    公开(公告)号:US4842797A

    公开(公告)日:1989-06-27

    申请号:US86585

    申请日:1987-08-18

    IPC分类号: C08J5/18 C08K5/13 D01F6/90

    摘要: A process for producing a shaped article of polyamide which comprises (1) melt-shaping an intimate mixture of 100 parts by weight of a polyamide having hexamethylene terephthalamide as main recurring units and 20 to 500 parts by weight of an aromatic hydroxy compound, and then (2) removing the aromatic hydroxy compound from the resulting shaped article by extraction.

    摘要翻译: 一种聚酰胺成型体的制造方法,其特征在于,(1)将100重量份的作为主要重复单元的六亚甲基对苯二甲酰胺的聚酰胺和20〜500重量份的芳香族羟基化合物的密实混合物熔融成形, (2)通过萃取从所得成型制品中除去芳族羟基化合物。

    Production of a film-like or fibrous structure of an aromatic polyester
    9.
    发明授权
    Production of a film-like or fibrous structure of an aromatic polyester 失效
    生产芳族聚酯的薄膜状或纤维结构体

    公开(公告)号:US4517315A

    公开(公告)日:1985-05-14

    申请号:US340036

    申请日:1982-01-18

    摘要: A process for producing a film-like or fibrous structure of an aromatic polyester, which comprises(1) forming an unstretched film-like or fibrous structure by melt-shaping a blend comprising 100 parts by weight of (A) an aromatic polyester having a high degree of polymerization derived from an aromatic dicarboxylic acid as a main acid component and an aliphatic diol and/or an alicyclic diol as a main glycol component and (B) 3 to 300 parts by weight of a low-molecular-weight compound being substantially non-reactive with the aromatic polyester (A) and having a boiling point of at least about 200.degree. C. under atmospheric pressure and a molecular weight of not more than 1,000,(2) stretching the resulting film-like or fibrous structure,(3) extracting at least a major portion of the low-molecular-weight compound from the stretched film-like or fibrous structure by using an organic solvent which does not substantially dissolve the aromatic polyester under the extracting conditions, and(4) if desired, heat-setting the film-like or fibrous structure after the stretching step (2) and/or the extracting step (3).The film-like or fibrous structure of an aromatic polyester prepared by the process substantially contains no low-molecular-weight compound or contains the low-molecular-weight compound in an amount of up to about 1 part by weight at most per 100 parts by weight of the aromatic polyester.

    摘要翻译: 一种制备芳族聚酯的薄膜状或纤维结构体的方法,其包括:(1)通过熔融成型共混物形成未拉伸的薄膜状或纤维结构体,所述共混物包含100重量份的(A)具有 衍生自作为主要酸成分的芳族二羧酸和作为主要二醇成分的脂族二醇和/或脂环族二醇的高聚合度和(B)基于3〜300重量份的低分子量化合物 与芳族聚酯(A)不反应,并且在大气压下沸点至少为约200℃,分子量不大于1000,(2)拉伸所得膜状或纤维结构物( 3)通过使用在萃取条件下基本上不溶解芳香族聚酯的有机溶剂,从拉伸膜状或纤维结构体中提取至少一部分低分子量化合物,和( 4)如果需要,在拉伸步骤(2)和/或提取步骤(3)之后对膜状或纤维结构进行热定型。 通过该方法制备的芳族聚酯的薄膜状或纤维结构基本上不含低分子量化合物,或者含有最多约1重量份至100重量份的低分子量化合物 芳香族聚酯的重量。

    Semicrystalline aromatic polyester, process for its production and resin
composition containing it
    10.
    发明授权
    Semicrystalline aromatic polyester, process for its production and resin composition containing it 失效
    半结晶芳香聚酯,其生产工艺和含有它的树脂组合物

    公开(公告)号:US5300621A

    公开(公告)日:1994-04-05

    申请号:US12631

    申请日:1993-02-03

    摘要: An aromatic polyester:(1) consisting essentially of a polymer unit A of the formula (1), ##STR1## a polymer unit B of the formula (2), ##STR2## and a polymer unit C of the formula (3), ##STR3## the above polymer units being bonded together forming ester linkages in a polymer chain,(2) the polymer unit C being contained in an amount of 10 to 35 mol % based of the total amount of the polymer units B and C,(3) the polyester being semicrystalline,(4) the polyester having an inherent viscosity, measured in a phenol/1,1,2,2-tetrachloroethane mixed solvent (weight ratio=60/40) at 35.degree. C., of at least 0.3; a process for its production; and a resin composition containing it.

    摘要翻译: 一种芳族聚酯:(1)基本上由式(1)的聚合物单元A,(*化学结构*)(1)式(2)的聚合物单元B,(*化学结构*)(2) 和式(3)的聚合物单元C,(*化学结构*)(3)上述聚合物单元在聚合物链中键合在一起形成酯键,(2)聚合物单元C的含量为10 至35摩尔%,(3)聚酯为半结晶,(4)具有特性粘度的聚酯在苯酚/ 1,1,2,2-四氯乙烷混合物中测定 溶剂(重量比= 60/40)在35摄氏度,至少0.3; 一个生产过程; 和含有它的树脂组合物。