Lattice layer compounds and their use

Details Lattice layer compounds and their use Lattice layer compounds and their use

C - Chemistry, Metallurgy

08

K

C08K 7/00 (2006.01) C01F 7/00 (2006.01) C01G 49/00 (2006.01) C08K 3/00 (2006.01) C08L 27/06 (2006.01)

Patent

CA 2195244

Lattice layer compounds have the general formula (I): LiaMeIIb+cMeIIIb- c(OH)dAn-e*mH2O, in which MeII stands for Mg, Ca, Zn and/or Sn2+; MeIII stands for Al and/or Fe3+; An- stands for an anion of n valence or for a mixture of anions, and the indices lie in the following ranges: 0 < a 1, 2 b 6, -0,5 c 0,5 and m = 0 to 5, d and e are different from 0 and are selected so that a neutral molecule is obtained. Also disclosed is the use of these lattice layer compounds as stabilisers or stabilising components for halogenated polymers.

Des composés stratifiés réticulaires ont la formule générale (I): Li¿a?Me?II¿¿b+c?Me?III¿¿b-c?(OH)¿d?A?n-¿¿e?*mH¿2?O, dans laquelle Me?II¿ désigne Mg, Ca, Zn et/ou Sn?2+¿, Me?III¿ désigne Al et/ou Fe?3+¿; A?n-¿ désigne un anion de valence n ou un mélange d'anions, les indices étant compris dans les plages suivantes: 0 < a ? 1, 2 ? b ? 6, -0,5 ? c ? 0,5 et m = 0 à 5, d et e sont différents de 0 et sont sélectionnés de sorte qu'une molécule neutre soit obtenue. L'invention concerne en outre l'utilisation de ces composés stratifiés réticulaires comme stabilisants ou composants stabilisants de polymères halogénés.

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