Radiopaque cationically polymerizable compositions...

C - Chemistry – Metallurgy – 08 – K

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C08K 3/00 (2006.01) C01G 99/00 (2010.01) A61K 6/08 (2006.01) A61K 6/087 (2006.01) C08K 3/22 (2006.01)

Patent

CA 2345115

Polymerizable compositions that include: (a) a cationically active functional group; (b) an initiation system capable of initiating cationic polymerization of the cationically active functional group; and (c) a filler composition that includes various radiopacifying fillers in an amount sufficient to render the polymerizable composition radiopaque. Components (a), (b), and (c) are selected such that the polymerizable composition polymerizes to form a polymerized composition having a Barcol hardness, measured using a GYZJ-935 meter, of at least 10 within 30 minutes following initiation of the cationically active functional group at a reaction temperature of 25 ~C.

Cette invention se rapporte à des compositions polymérisables qui contiennent: (a) un groupe fonctionnel actif par voie cationique; (b) un système d'initialisation, capable d'initialiser la polymérisation cationique du groupe fonctionnel actif par voie cationique; et (c) une composition de charge qui renferme diverses charges radio-opacifiantes en quantité suffisante pour rendre la composition polymérisable radio-opaque. Les composants (a), (b) et (c) sont choisis pour que la composition polymérisable subisse une polymérisation jusqu'à former une composition polymérisée ayant une dureté de Barcol, mesurée à l'aide d'un duromètre GYZJ-935, d'au moins 10 en 30 minutes après l'initialisation du groupe fonctionnel actif par voie cationique à une température de réaction de 25 ·C.

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