C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 323/52 (2006.01) C07C 319/12 (2006.01) C08F 222/10 (2006.01) C08F 290/06 (2006.01) C08K 5/372 (2006.01) G02B 1/00 (2006.01)
Patent
CA 2213539
Polymeric compositions for the preparation of optical grade materials, and the optical materials prepared thereby, are provided. The compositions include a class of reactive and non-reactive additives, referred to as additive, in combination with a polymer and optionally a diluent. The additives are preferably the reaction product of a thiol containing compound and an unsaturated compound. The additives optimally have a refractive index between about 1.40 and 1.70, and preferably between 1.50 and 1.70; a relatively high Abbe number (between 25 and 60) and minimal color.
Compositions polymères pour la préparation de matériaux de qualité optique, et matériaux optiques ainsi obtenus. Ces compositions comprennent une classe d'additifs réactifs et non réactifs dits "additif", en association avec un polymère et éventuellement un diluant. De préférence, les additifs sont le produit de la réaction entre un composé renfermant un thiol, et un composé insaturé. De façon optimale, les additifs présentent un indice de réfraction compris entre 1,40 et 1,70, de préférence entre 1,50 et 1,70, ainsi qu'un nombre de Abbe relativement élevé (compris entre 25 et 60), et une coloration minimale.
Robic
Surface Specialties S.a.
Ucb S.a.
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