2.
    发明专利
    未知

    公开(公告)号:AT547556T

    公开(公告)日:2012-03-15

    申请号:AT09306083

    申请日:2009-11-10

    Applicant: ESSILOR INT

    Abstract: Method for dyeing a substrate prepared by curing a polymerizable composition comprising one monomer containing one episulfide group, said method comprising: - providing a dye solution comprising a dye and a carrier in a solvent, the carrier being chosen from the compounds represented by the following formulae (1) and (2): * formula (1) : wherein R 1 , R 2 , R 3 and R 4 are each selected from the group consisting of alkyl having from 1 to 10 carbon atom, H, -CH 2 SH, -CH 2 SCH 2 CH 2 SH, * €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒformula (2) :€ƒ€ƒ€ƒ€ƒ€ƒ(HSCH 2 ) 4-m C(CH 2 SCH 2 CH 2 SH) m (2) wherein m denotes an integer from 1 to 3; And - at least partially immersing the substrate in the dye solution for a time sufficient to allow the effective tinting of the substrate.

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