C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 220/26 (2006.01) C08F 2/44 (2006.01) C09K 9/02 (2006.01)
Patent
CA 2746217
The present invention discloses a process for preparing a photochromic polymeric composition, characterized in that the photochromic polymeric composition is prepared by comprising (meth) acrylamide compound in the reaction mixture useful for the preparation of the photochromic polymeric composition. The present invention also relates to the thus obtained polymeric composition, photochromic articles made from said polymeric composition, and use of said polymeric composition for preparing photochromic articles. The photochromic polymeric composition according to the present invention makes the absorption peak of the photochromic dye therein become longer, thus exhibiting a desired grey with a bit bluish green or grey with a bit blue.
L'invention concerne un procédé permettant de préparer une composition polymère photochromique; on prépare ladite composition polymère photochromique en introduisant un composé (méth)acrylamide dans le mélange réactionnel utilisé pour la préparation de la composition polymère photochromique. L'invention concerne également la composition polymère ainsi obtenue, les articles photochromique fabriqués à partir de ladite composition polymère, ainsi que l'utilisation de cette composition polymère pour préparer des articles photochromiques. La composition polymère photochromique selon l'invention rend le pic d'absorption du colorant photochromique plus long, présentant ainsi un gris recherché avec un peu de vert bleuté ou un gris avec un peu de bleu.
Lan Wentian
Zhang Zhengfeng
Evonik Roehm Gmbh
Marks & Clerk
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