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    POLYMER COMPOSITIONS CONTAINING GRAFTED POLYMERIC NETWORKS AND PROCESSES FOR THEIR PREPARATION AND USE
    1.
    发明申请
    POLYMER COMPOSITIONS CONTAINING GRAFTED POLYMERIC NETWORKS AND PROCESSES FOR THEIR PREPARATION AND USE 有权

    公开(公告)号：US20210261712A1

    公开(公告)日：2021-08-26

    申请号：US17242948

    申请日：2021-04-28

    申请人： Johnson & Johnson Vision Care, Inc.

    发明人： Brian Aitken ,  Charles Scales ,  Scott Joslin ,  Yong Zhang ,  Dola Sinha ,  Shivkumar Mahadevan ,  Patricia Martin ,  Fang Lu ,  Donnie Duis ,  Stephen C. Arnold

    IPC分类号： C08F290/06 ,  C08J7/16 ,  C08F283/12 ,  C08L51/08 ,  C09B69/10 ,  G02B1/04

    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
    6.
    发明授权
    Polymer compositions containing grafted polymeric networks and processes for their preparation and use 有权

    公开(公告)号：US11021558B2

    公开(公告)日：2021-06-01

    申请号：US15656033

    申请日：2017-07-21

    申请人： Johnson & Johnson Vision Care, Inc.

    发明人： Brian Aitken ,  Charles Scales ,  Scott Joslin ,  Yong Zhang ,  Dola Sinha ,  Shivkumar Mahadevan ,  Patricia Martin ,  Fang Lu ,  Donnie Duis ,  Stephen C. Arnold

    IPC分类号： C08F290/06 ,  C08J7/16 ,  C08F283/12 ,  C08L51/08 ,  C09B69/10 ,  G02B1/04

    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.

    TRI-BLOCK PREPOLYMERS AND THEIR USE IN SILICONE HYDROGELS
    9.
    发明申请
    TRI-BLOCK PREPOLYMERS AND THEIR USE IN SILICONE HYDROGELS 审中-公开

    公开(公告)号：US20180100039A1

    公开(公告)日：2018-04-12

    申请号：US15691829

    申请日：2017-08-31

    申请人： Johnson & Johnson Vision Care, Inc.

    发明人： Yong Zhang ,  Scott L. Joslin ,  Shivkumar Mahadevan ,  James D. Ford

    IPC分类号： C08J3/075 ,  C08G81/02 ,  G02B1/04

    摘要： Described is a tri-block prepolymer having a chemical structure of [A]-[B]-[C], comprising at least one monovalent reactive group, wherein segment [A] and [C] independently comprise polymeric segments based on a first hydrophilic monomer comprising functionality selected from the group consisting of hydroxyalkyl, alkylamine, and mixtures thereof and optionally a second hydrophilic monomer, and [B] comprises a polymeric segment of at least one silicone-containing macromer and optionally a third hydrophilic monomer comprising functionality selected from the group consisting of hydroxyalkyl, alkylamine, and mixtures thereof and optionally a silicone-containing monomer. These prepolymers may be used alone or in combination with other components in reactive monomer mixtures for making silicone hydrogels and ophthalmic devices made therefrom, including contact lenses.