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    Liquid nitroso rubber prepolymers
    3.
    发明授权
    Liquid nitroso rubber prepolymers 失效
    液氮硝基橡胶预处理剂

    公开(公告)号：US3637814A

    公开(公告)日：1972-01-25

    申请号：US3637814D

    申请日：1968-03-27

    申请人： THIOKOL CHEMICAL CORP

    发明人： MAYES NATHAN ,  MICHAELS RONALD

    IPC分类号： C08G73/24 ,  C07C3/24

    CPC分类号： C08G73/24

    摘要： LIQUID NITROSO RUBBER PREPOLYMERS ARE DISCLOSED HAVING A MOLECULAR WEIGHT BELOW ABOUT 20,000 AND THE GENERAL FORMUAL:

    Z-(-CF2-CF2-N(=O)(-CF3))M- -(CF2-CF2-N(=O)(-(CF2)P-COO-R)-

    )N-CF2-CF2-Z

    WHEREIN R IS SELECTED FROM HYDROGEN AND ALKYL GROUPS OF 1 TO 6 CARBON ATOMS, Z IS SELECTED FROM CHLORINE, BROMINE, IODINE AND -NO2, P IS 2 TO 6 AND THE RATIO M:N IS FROM 1:1 TO 50:1. THE LIQUID PREPOLYMERS MAY BE PREPARED BY COPOLYMERIZING PERFLUORONITROSOMETHANE, TETRAFLUOROETHYLENE AND A NITROSOPERFLUORO ACID OR ESTER IN THE PRESENCE OF A TERMINATOR WHICH MAY BE CHLORINE, BROMINE, IODINE OR NITORGEN DIOXIDE. THE POLYMERS CAN BE CURED WITH SUCH CURING AGENTS AS EPOXIDES, METAL OXIDES AND CHROMIUM PERFLUOROACETATE TO PRODUCE RUBBERS HAVING GOOD PHYSICAL PROPERTIES AND CHEMICAL RESISTANCE.

    High performance fluorinated polymers and methods
    8.
    发明授权
    High performance fluorinated polymers and methods 失效
    高性能氟化聚合物和方法

    公开(公告)号：US06515101B1

    公开(公告)日：2003-02-04

    申请号：US09404260

    申请日：1999-09-22

    申请人： Valerie V. Sheares

    发明人： Valerie V. Sheares

    IPC分类号： C08G7324

    CPC分类号： C08G73/24

    摘要： Fluorinated oligomers, polymers, and copolymers including poly[[1,1 ′-biphenyl]-4,4′-diyl[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]] and other compounds useful for high performance polymer, electronic, aerospace, coatings, and high temperature gas separation applications. Also provided are methods for synthesizing fluorinated polymer derivatives.

    摘要翻译： 氟化低聚物，聚合物和共聚物，包括聚[[1,1'-联苯] -4,4'-二基[2,2,2-三氟-1-（三氟甲基）亚乙基]]和其它可用于高性能聚合物 ，电子，航空航天，涂料和高温气体分离应用。 还提供了合成氟化聚合物衍生物的方法。