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    MANUFACTURING ALLYLIC LENSES WITH IMPROVED COLOR USING BENZOYL PEROXIDE AS THE INITIATOR
    1.
    发明公开
    MANUFACTURING ALLYLIC LENSES WITH IMPROVED COLOR USING BENZOYL PEROXIDE AS THE INITIATOR 审中-实审

    公开(公告)号：EP4361182A1

    公开(公告)日：2024-05-01

    申请号：EP22306618.4

    申请日：2022-10-25

    申请人： Essilor International

    发明人： MASURE, Laurie ,  FROMENTIN, Pierre

    IPC分类号： C08F4/34 ,  C08F18/24 ,  C08F118/16 ,  C08F218/00 ,  G02C7/02

    CPC分类号： C08F218/24 ,  C08F118/16 ,  C08F4/34 ,  C08F18/24

    摘要： The present disclosure relates to a method for manufacturing a lens comprising the following steps:
    a. Providing a mass mallyl of at least one allyl monomer or allyl oligomer,
    b. Providing a radical initiator composition comprising benzoyl peroxide (BPO) in mixture with water,
    c. Mixing said at least one allyl monomer or allyl oligomer with the radical initiator composition to obtain a polymerizable composition,
    d. Stripping the water from the polymerizable composition to obtain a dried polymerizable composition,
    e. Providing a mold assembly and filling the mold assembly with the dried polymerizable composition,
    f. Curing the dried polymerizable composition in the mold assembly to obtain the lens.
    The invention also provides a polymerizable composition for the manufacture of a lens that is characterised by reduce yellowing.