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17 条记录 (耗时 0.012 秒)

    Catalytic method for producing aromatic polyamides
    2.
    发明授权
    Catalytic method for producing aromatic polyamides 失效
    用于生产芳族聚酰胺的催化方法

    公开(公告)号：US3870685A

    公开(公告)日：1975-03-11

    申请号：US37027373

    申请日：1973-06-15

    申请人： CELANESE CORP

    发明人： JONES RUFUS S ,  CONCIATORI ANTHONY B

    IPC分类号： C08G69/32 ,  C08G20/20

    CPC分类号： C08G69/32

    摘要： High molecular weight wholly aromatic linear polyamides of film and fiber-forming grade are prepared by direct condensation of monomeric aromatic dicarboxylic acids and aromatic diamines in about a mole to mole ratio in the presence of an aromatic sulfone and a catalytic amount of a boric acid and/or a sulfonic acid or derivatives thereof. The condensation product using the noted catalyst is polymerized to higher inherent viscosities than that obtained without a catalyst under similar conditions. The described process is particularly advantageous because substantially shorter polymerization times are required to obtain film and fiber-forming polymers.

    摘要翻译： 通过在芳族砜和催化量的硼酸的存在下以摩尔比摩尔比直接缩合单体芳族二羧酸和芳族二胺制备膜和纤维形成级的高分子量全芳族线性聚酰胺，以及 /或磺酸或其衍生物。 使用所述催化剂的缩合产物在类似条件下聚合成比不用催化剂获得的更高的特性粘度。 所述方法是特别有利的，因为需要缩短聚合时间以获得膜和纤维形成聚合物。

    Glycidyl esters of sterically hindered organic acids
    3.
    发明授权
    Glycidyl esters of sterically hindered organic acids 失效
    有机有机酸的甘氨酸酯

    公开(公告)号：US3629295A

    公开(公告)日：1971-12-21

    申请号：US3629295D

    申请日：1969-05-08

    申请人： CELANESE CORP

    发明人： STACKMAN ROBERT W ,  CONCIATORI ANTHONY B

    IPC分类号： C07D303/16 ,  C07D1/18

    CPC分类号： C07D303/16

    摘要： WHEREIN R2 IS ALKYLENE, ARYLENE OR DIARYLENE AND X IS A SINGLE BOND OXYGEN, SULFONYL, CARBONYL OR AMINO, OR SUBSTITUTED DERIVATIVES OF THE ALKYLENE, ARYLENE AND DIARYLENE GROUPS, THE COMPOUNDS BEING USEFUL IN THE PREPARATION OF EPOXY RESINS.

    -R2-X-R2-

    WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, HALOGEN AND ARYL AND R1 IS A SINGLE BOND, ALKYLENE, ARYLENE OR A RADICAL OF THE FORMULA:

    (OXIRANYL-CH2-OOC-C(-R)2-R1-C(-R)2-COO-CH2-)OXIRANE

    GLYCIDYL ESTERS OF THE FORMULA:

    Resins from phenylene bisacrylic acid
    8.
    发明授权
    Resins from phenylene bisacrylic acid 失效
    苯乙烯双丙烯酸树脂

    公开(公告)号：US3637602A

    公开(公告)日：1972-01-25

    申请号：US3637602D

    申请日：1967-11-13

    申请人： CELANESE CORP

    发明人： CONCIATORI ANTHONY B

    IPC分类号： C08G69/26 ,  C08G20/00

    CPC分类号： C08G69/26

    摘要： AN APPROXIMATELY EQUIMOLAR QUANITY OF AN AROMATIC DICARBOXYLIC ACID POSSESSING AT LEAST ONE NON-AROMATIC SIDE CHAIN HAVING A CARBON TO CARBON DOUBLE BOND IN CONJUGATION WITH THE AROMATIC NUCLEUS, OR AN ACID HALIDE DERIVATIVE THEREOF, IS CONDENSED WITH A PRIMARY OR A SECONDARY DIAMINE TO FORM A HIGH MELTING POLYAMIDE RESIN. THE POLYAMIDE RESIN POSSESSES IMPROVED PERFORMANCE PROPERTIES, AND IS PARTICULARLY SUITED FOR USE IN THE PRODUCTION OF FIBERS, AND AS A VEHICLE OR BINDER IN THE FORMATION OF HIGH TEMPERATURE RESIDTANT COMPOSITE ARTICLES.