Composition based on calcium of magnesium acetylacetonate...

C - Chemistry – Metallurgy – 08 – K

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C08K 5/07 (2006.01) C07C 45/77 (2006.01) C07C 49/92 (2006.01) C08J 3/00 (2006.01) C08K 5/00 (2006.01) C08L 27/06 (2006.01)

Patent

CA 2292740

The invention concerns a composition comprising calcium or magnesium acetylacetonate and at least a free .beta.-diketone and/or in the form of a metal chelate, and having a melting point at most equal to 200 ·C. The invention also concerns the use of said composition for forming a formulation comprising at least a halogenated polymer, to prevent heterogeneity resulting from the presence of calcium or magnesium acetylacetonate, in said polymer.

La présente invention a pour objet une composition comprenant de l'acétylacétonate de calcium ou de magnésium et au moins une .beta.-dicétone sous forme libre et/ou sous la forme d'un chélate métallique, et présentant un point de fusion au plus égal à 200 ~C. Elle a de même pour objet l'utilisation de la composition précitée, lors de la mise en forme d'une formulation comprenant au moins polymère halogèné, afin d'éviter l'apparition d'hétérogénéités dues à la présence d'acétylacétonate de calcium ou de magnésium, dans ledit polymère.

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