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    Fluoropolymer low reflecting layers for plastic lenses and devices
    3.
    发明公开
    Fluoropolymer low reflecting layers for plastic lenses and devices 有权
    含氟聚合物低反射层用于塑料镜片和设备

    公开(公告)号：EP1449861A2

    公开(公告)日：2004-08-25

    申请号：EP04076018.3

    申请日：2000-03-15

    申请人： E.I. du Pont de Nemours and Company

    发明人： Feiring, Andrew Edward ,  Tatsuhiro, Takahasi ,  Uschold, Ronald Earl ,  Wheland, Robert Clayton

    IPC分类号： C08F218/08 ,  C08F214/18 ,  C08F214/26 ,  C08J7/04 ,  C08L27/12 ,  B32B27/28 ,  C09D127/12 ,  C09D127/16 ,  C09D127/18 ,  C09D131/04 ,  C09D151/00

    CPC分类号： C09D127/12 ,  C08F214/18 ,  C08F214/26 ,  C08F214/28 ,  C08J7/04 ,  C08J7/047 ,  C08J2427/00 ,  C08L2205/02 ,  C09D127/16 ,  C09D127/18 ,  C09D127/20 ,  C09D131/04 ,  Y10T428/265 ,  Y10T428/31504 ,  Y10T428/31507 ,  Y10T428/3154 ,  Y10T428/31786 ,  Y10T428/31935 ,  C08L2666/04

    摘要： The present invention provides a two-layer coating system for coating substrates selected from the group consisting of PMMA, PC, PET, and PS comprising an upper layer selected from the group consisting of:

    a) poly(TFE/HFP) and poly(VF 2 /TFE/HFP), wherein the molar ratio of HFP to TFE is between about 0.9 and 1.9 and, in the case of the VF 2 /TFE/HFP terpolymer, the concentration of VF 2 is about 19 mole %; and
    b) poly(TFE/perfluoro-2,2-dimethyldioxole) wherein the concentration of the perfluorodimethyldioxole is between 60 and 90 mole %;
    and a lower coating layer selected from the group consisting of:

    a) poly(VF 2 /TFE/HFP) wherein the ratio of TFE to HFP is between about 0.9 and 1.9 and the concentration of VF 2 is between about 18 and 60% on PMMA substrates and between about 12 and 40 mole % on PC, PET, and PS substrates;
    b) poly(VF/TFE/HFP) wherein the ratio of TFE to HFP is between about 2.1 and 0.9 and the concentration of VF is between about 42 and 58 mole %;
    c) poly(VAc/TFE/HFIB) wherein the concentration of VAc is between 36 and 69 mole % and the concentration of HFIB is between 14 and 52 mole %; and
    d) TFE graft to PVOH wherein about 46 mole % TFE has been grafted to the PVOH;
    a composition prepared by the polymerization of vinyl acetate (VAc, CH 3 -C(O)-OCH=CH 2 ), tetrafluoroethylene (CF 2 =CF 2 ), and hexafluoroisobutylene ((CF 3 ) 2 C=CH 2 ); and
    a coating system for coating a substrate comprising a fluorinated copolymer having the formula

            VAc/TFE/HFIB

    wherein the VAc content is 36 to 69 mole %, the TFE content is 12 to 17 mole % and the HFIB mole % is 14 to 52 %.

    摘要翻译： 本发明提供了用于涂覆选自PMMA，PC，PET和PS的基材的双层涂布体系，该体系包含选自以下的上层：a）聚（TFE / HFP）和聚（VF2 / TFE / HFP），其中HFP与TFE的摩尔比在约0.9和1.9之间，并且在VF2 / TFE / HFP三元共聚物的情况下，VF2的浓度为约19摩尔％; 和b）聚（TFE /全氟-2,2-二甲基二氧杂环戊烯），其中全氟二甲基二氧杂环戊烯的浓度在60和90摩尔％之间; 和选自以下的下涂层：a）在PMMA基材上TFE与HFP之比在约0.9至1.9之间且VF2之浓度在约18至60％之间的聚（VF2 / TFE / HFP） 和在PC，PET和PS基材上的约12和40摩尔％之间; b）聚（VF / TFE / HFP），其中TFE与HFP的比率在约2.1和0.9之间，VF的浓度在约42和58％摩尔之间; c）聚（VAc / TFE / HFIB），其中VAc的浓度在36和69摩尔％之间，HFIB的浓度在14和52摩尔％之间; 和d）TFE接枝到PVOH，其中约46摩尔％的TFE已经接枝到PVOH上; 通过乙酸乙烯酯（VAc，CH3-C（O）-OCH = CH2），四氟乙烯（CF2 = CF2）和六氟异丁烯（（CF3）2C = CH2）的聚合制备的组合物; 以及用于涂覆包含具有式VAc / TFE / HFIB的含氟共聚物的基材的涂布体系，其中VAc含量为36至69摩尔％，TFE含量为12至17摩尔％且HFIB摩尔％为14至52％ 。