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    • 4. 发明授权
    • Fluorinated copolymer and barrier films
    • 氟化共聚物和阻隔膜
    • US5173556A
    • 1992-12-22
    • US696414
    • 1991-05-06
    • Frank MaresBryce C. OxenriderDavid J. LongJohn P. Sibilia
    • Frank MaresBryce C. OxenriderDavid J. LongJohn P. Sibilia
    • C08F8/12C08F214/18C08F218/04
    • C08F214/186C08F218/04C08F8/12C08J5/18C08F2810/50
    • The present invention is directed to a copolymer of a fluoromonomer having the formula R.sub.1 R.sub.2 C.dbd.CR.sub.3 F wherein R.sub.1, R.sub.2 and R.sub.3 are selected from H and F, and R.sub.3 may be Cl when R.sub.1 and R.sub.2 are F; and a vinyl monomer having the formula H.sub.2 C.dbd.CHR.sub.x, wherein R.sub.x is a radical having the formula --O.sub.2 CR.sub.y, wherein R.sub.y is a radical selected from CH.sub.3 and C.sub.2 H.sub.5.The resulting copolymer comprises fluorinated units having the formula (R.sub.1 R.sub.2 C--CR.sub.3 F) wherein R.sub.1, R.sub.2 and R.sub.3 are selected from H and F, and R.sub.3 may be Cl when R.sub.1 and R.sub.2 are F, and corresponding amounts of vinyl units having the formula (H.sub.2 C--CHR.sub.x), wherein R.sub.x is selected from --CH.sub.3 and C.sub.2 H.sub.5. In an alternate and preferred embodiment the copolymer is hydrolyzed so that R.sub.x becomes --OH.
    • 本发明涉及式R1R2C = CR3F的含氟单体的共聚物,其中R 1,R 2和R 3选自H和F,当R 1和R 2为F时,R 3可以为Cl; 和具有式H2C = CHRx的乙烯基单体,其中Rx是具有式-O2CRy的基团,其中Ry是选自CH3和C2H5的基团。 所得共聚物包括具有式(R 1 R 2 C-CR 3 F)的氟化单元,其中R 1,R 2和R 3选自H和F,当R 1和R 2为F时,R 3可为Cl,并且相应量的具有式 -CHRx),其中Rx选自-CH 3和C 2 H 5。 在替代和优选的实施方案中,共聚物被水解,使得Rx变成-OH。