C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 33/04 (2006.01) B29D 11/00 (2006.01) C08F 222/10 (2006.01) C08K 5/15 (2006.01) C08K 5/35 (2006.01) C09D 4/00 (2006.01)
Patent
CA 2223336
. A resin is provided comprising a mixture of at least two polymerizable components, at least one photochromic additive, at least one additive and at least one polymerization initiator. The mixture of at least two polymerizable components is preferably selected from monofunctional, difunctional and multifunctional acrylates and methacrylates. The photochromic additive is preferably selected from spirooxazine additives and spiropyran additives. And the additive is preferably selected from antioxidants, radical scavengers and ultraviolet absorbers.
L'invention porte sur une résine renfermant un mélange d'au moins deux constituants polymérisables, au moins un additif photochrome et au moins un initiateur de polymérisation. Pour le mélange d'au moins deux constituants polymérisables, on privilégie les méthacrylates et acrylates monofonctionnels, difonctionnels et multifonctionnels. Pour l'additif photochrome, on privilégie les spirooxazines et les spiropyranes. Enfin l'additif est de préférence choisi parmi un antioxydant, un épurateur de radical et un agent absorbant les UV.
Blum Ronald D.
Gupta Amitava
Iyer Venkatramani S.
Kokonaski William
Essilor International (compagnie Generale D'optique)
Innotech Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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