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    POLYMER COMPOSITIONS CONTAINING GRAFTED POLYMERIC NETWORKS AND PROCESSES FOR THEIR PREPARATION AND USE
    2.
    发明授权
    POLYMER COMPOSITIONS CONTAINING GRAFTED POLYMERIC NETWORKS AND PROCESSES FOR THEIR PREPARATION AND USE 有权

    公开(公告)号：EP3494168B1

    公开(公告)日：2020-04-29

    申请号：EP17757937.2

    申请日：2017-08-01

    申请人： Johnson & Johnson Vision Care, Inc.

    发明人： AITKEN, Brian ,  SCALES, Charles ,  JOSLIN, Scott ,  ZHANG, Yong ,  SINHA, Dola ,  MAHADEVAN, Shivkumar ,  MARTIN, Patricia ,  LU, Fang ,  DUIS, Donnie ,  ARNOLD, Stephen C.

    IPC分类号： C08J7/16 ,  C08F283/12

    摘要： Provided are polymer compositions made by a process comprising: (a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker; (b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator, (c) combining the crosslinked substrate network with a second reactive composition containing one or more ethylenically unsaturated compounds; and (d) activating the covalently bound activatable free radical initiator of the crosslinked substrate network such that the second reactive composition polymerizes therein with the crosslinked substrate network to form a grafted polymeric network and a byproduct polymer. Also provided are precursors to the polymer compositions, processes for preparation of the polymer compositions, and methods of using the polymer compositions, for instance in medical devices.

    POLYMER COMPOSITIONS CONTAINING GRAFTED POLYMERIC NETWORKS AND PROCESSES FOR THEIR PREPARATION AND USE
    3.
    发明公开
    POLYMER COMPOSITIONS CONTAINING GRAFTED POLYMERIC NETWORKS AND PROCESSES FOR THEIR PREPARATION AND USE 有权

    公开(公告)号：EP3494168A1

    公开(公告)日：2019-06-12

    申请号：EP17757937.2

    申请日：2017-08-01

    申请人： Johnson & Johnson Vision Care, Inc.

    发明人： AITKEN, Brian ,  SCALES, Charles ,  JOSLIN, Scott ,  ZHANG, Yong ,  SINHA, Dola ,  MAHADEVAN, Shivkumar ,  MARTIN, Patricia ,  LU, Fang ,  DUIS, Donnie ,  ARNOLD, Stephen C.

    IPC分类号： C08J7/16 ,  C08F283/12

    摘要： Provided are polymer compositions made by a process comprising: (a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker; (b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator, (c) combining the crosslinked substrate network with a second reactive composition containing one or more ethylenically unsaturated compounds; and (d) activating the covalently bound activatable free radical initiator of the crosslinked substrate network such that the second reactive composition polymerizes therein with the crosslinked substrate network to form a grafted polymeric network and a byproduct polymer. Also provided are precursors to the polymer compositions, processes for preparation of the polymer compositions, and methods of using the polymer compositions, for instance in medical devices.