Method of preparing polyesters modified with trihydroxybenzophenone
    2.
    发明授权
    Method of preparing polyesters modified with trihydroxybenzophenone 失效
    制备用三羟基二苯甲酮改性的聚酯的方法

    公开(公告)号:US4354016A

    公开(公告)日:1982-10-12

    申请号:US210756

    申请日:1980-11-28

    CPC分类号: C08G63/672

    摘要: UV stable linear polyesters, e.g. polyethylene terephthalate, contain in their chain copolymerized 2-hydroxy-di(hydroxyalkoxy)benzophenone. The polyesters are useful for making biaxially oriented films. The polyesters can be made by polycondensation in the presence of 2,4,4'-trihydroxybenzophenone.

    摘要翻译: UV稳定的线性聚酯,例如 聚对苯二甲酸乙二醇酯在其链状共聚的2-羟基 - 二(羟基烷氧基)二苯甲酮中含有。 聚酯可用于制备双轴取向薄膜。 聚酯可以在2,4,4'-三羟基二苯甲酮的存在下通过缩聚制备。

    Polyester compositions containing residues of dihydroxyalkoxy coumarins
    3.
    发明授权
    Polyester compositions containing residues of dihydroxyalkoxy coumarins 失效
    含有二羟基烷氧基香豆素残基的聚酯组合物

    公开(公告)号:US4347350A

    公开(公告)日:1982-08-31

    申请号:US210755

    申请日:1980-11-28

    CPC分类号: C08G63/672

    摘要: UV stable linear polyesters, e.g. polyethylene terephthalate, contain in their chain copolymerized esterification residues of di(hydroxyalkoxy)coumarins. The polyesters are useful for making biaxially oriented films. The polyesters can be made by polycondensation in the presence of 4-methyl-6,7-dihydroxy-coumarin.

    摘要翻译: UV稳定的线性聚酯,例如 聚对苯二甲酸乙二醇酯在其二链(羟基烷氧基)香豆素的链共聚酯化残基中含有。 聚酯可用于制备双轴取向薄膜。 聚酯可以在4-甲基-6,7-二羟基香豆素的存在下通过缩聚制备。

    Polyester production
    5.
    发明授权
    Polyester production 失效
    涤纶生产

    公开(公告)号:US4133800A

    公开(公告)日:1979-01-09

    申请号:US742000

    申请日:1976-11-15

    IPC分类号: C08G63/83 C08G63/86 C08G63/36

    CPC分类号: C08G63/83 C08G63/86

    摘要: Polyesters, e.g. polyethylene terephthalate, are produced by a direct esterification process. The esterification is performed in the presence of a germanium dioxide polycondensation catalyst dissolved in an alkaline ethylene glycol solution. The alkali in the catalyst solution acts as the softening point stabilizer. An antimony polycondensation catalyst is also employed.

    摘要翻译: 聚酯,例如 聚对苯二甲酸乙二醇酯通过直接酯化方法制备。 酯化反应在溶解在碱性乙二醇溶液中的二氧化锗缩聚催化剂存在下进行。 催化剂溶液中的碱作为软化点稳定剂。 还使用锑缩聚催化剂。

    Poly(2-methyl-1,5-pentylene)terephthalamide: a method of using: a method
of spinning: and a method of making
    6.
    发明授权
    Poly(2-methyl-1,5-pentylene)terephthalamide: a method of using: a method of spinning: and a method of making 失效
    聚(2-甲基-1,5-亚戊基)对苯二甲酰胺:使用方法:纺丝方法及其制造方法

    公开(公告)号:US5162152A

    公开(公告)日:1992-11-10

    申请号:US822663

    申请日:1992-01-23

    IPC分类号: D01F6/60 D21F1/00 D21F7/08

    摘要: Poly(2-methyl-1,5-pentylene) terephthalamide is discussed herein. It is manufactured in a process starting with a nylon salt made from terephthalic acid and 2-methyl-1,5-pentylene diamine and an excess amount of the diamine. The polymer is spun to form monofilaments. The monofilaments may be used, among other things, to form dryer screens for use in a paper forming process.

    摘要翻译: 本文讨论了聚(2-甲基-1,5-亚戊基)对苯二甲酰胺。 以由对苯二甲酸和2-甲基-1,5-戊二胺制得的尼龙盐和过量的二胺开始的方法制造。 将聚合物纺丝以形成单丝。 除了其它之外,单丝可以用于形成用于造纸过程的干燥器筛网。

    Dryer screen made from poly(2-methyl-1,5-pentylene) terephthalamide
    7.
    发明授权
    Dryer screen made from poly(2-methyl-1,5-pentylene) terephthalamide 失效
    由聚(2-甲基-1,5-亚戊基)对苯二甲酰胺制成的干燥筛

    公开(公告)号:US5112685A

    公开(公告)日:1992-05-12

    申请号:US653825

    申请日:1991-02-11

    IPC分类号: D01F6/60 D21F1/00

    摘要: Poly(2-methyl-1,5-pentylene) terephthalamide is discussed herein. It is manufactured in a process starting with a nylon salt made from terephthalic acid and 2-methyl-1,5-pentylene diamine and an excess amount of the diamine. The polymer is spun to form monofilaments. The monofilaments may be used, among other things, to form dryer screens for use in a paper forming process.

    摘要翻译: 本文讨论了聚(2-甲基-1,5-亚戊基)对苯二甲酰胺。 以由对苯二甲酸和2-甲基-1,5-戊二胺制得的尼龙盐和过量的二胺开始的方法制造。 将聚合物纺丝以形成单丝。 除了其它之外,单丝可以用于形成用于造纸过程的干燥器筛网。