C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 226/02 (2006.01) C08F 226/06 (2006.01) C08F 236/22 (2006.01)
Patent
CA 2287319
The object of the present invention is a radically polymerisable composition comprising a mixture of at least: one or more (meth)acrylate difunctional monomer(s) of type (a): of formula (A) and/or of formula (A'); and one or more alkenic difunctional monomers of type (b): of formula (B) and/or of formula (B') and/or of formula (B''). The invention also relates to the resins obtained by polymerization of the compositions and the ophthalmic articles constituted, wholly or in part, of the resins, and the articles may optionally have photochromic properties.
L'invention concerne une composition sujette à la polymérisation radicalaire, qui comprend un mélange d'au moins un ou plusieurs monomères de (méth)acrylate bifonctionnels de type (a), selon la formule (A) et/ou la formule (A') et un ou plusieurs monomères alcènes bifonctionnels de type (b), selon la formule (B) et/ou la formule (B') et/ou la formule (B''). L'invention concerne aussi les résines obtenues par polymérisation des compositions considérées et les produits ophtalmiques constitués, en totalité ou en partie, de ces résines. A titre facultatif, les produits en question peuvent avoir des propriétés photochromes.
Corning S.a.
Corning Incorporated
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