2.
    发明专利
    未知

    公开(公告)号:FR2699541A1

    公开(公告)日:1994-06-24

    申请号:FR9215533

    申请日:1992-12-22

    Applicant: ESSILOR INT

    Abstract: Polymer composition resulting from the polymerisation of a polymerisable composition comprising: - at least 50 % by weight of a monomer or of a mixture of monomers corresponding to the formula I in which R1 and R2, which are identical or different, denote hydrogen or C1-C6 alkyl; X denotes m + n is between 0 and 10 - 0 to 50 % by weight of one or a number of mono- or polyfunctional methacrylic, acrylic or vinyl comonomers (II) - from 0.5 to 15 % with respect to the weight of the components I + II of a compound of formula (III) in which R3 and R4 denote hydrogen or else one of the radicals R3 or R4 is a hydrogen atom whereas the other forms a ring with R7 and R5, R6 and R7 are hydrogen or alkyl which can be substituted by OH and/or interrupted.

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