Flame retardant-stabiliser combination for thermoplastic...

C - Chemistry – Metallurgy – 08 – K

Patent

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C08K 13/02 (2006.01) C08K 3/22 (2006.01) C08K 5/3492 (2006.01) C08K 5/5313 (2006.01)

Patent

CA 2497443

The invention relates to a novel flameproof agent-stabiliser-combination for thermoplastic polymers, containing, as component A 25 99.9 wt %. of a phosphinic acid salt of formula (I) and/or a diphosphinic acid salt of formula (II) and/or polymers thereof, wherein R1, R2 are the same or different and represent C1-C6-alkyl, are linear or branched and/or represent aryl; R3 represents C1-C10-alkylene, are linear or branched, C6-C10-arylene, alkylarylene or arylalkylene; M represents Mg, Ca, AI, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protoned nitrogenous base; m represents 1- 4; n represents 1 - 4; x represents 1 4, as component B 0 75 wt % of a synergist containing nitrogen or a phosphorous/nitrogen flameproof agent and as component C 0.1 50 wt % of a basic or amphoteric oxide, hydroxide, carbonate, silicate, borate, stannate, mixed oxide-hydroxide, oxide-hydroxide carbonate, hydroxide-silicate or hydroxide-borate or mixtures of said agents, whereby the total of the components always amounts to 100 %

La présente invention concerne une nouvelle combinaison agent ignifugeant-stabilisant pour des polymères thermoplastiques, comprenant, en tant que composant A, de 25 à 99,9 % en poids d'un sel d'acide phosphinique de formule (I) et/ou d'un sel d'acide diphosphinique de formule (II) et/ou de polymères de ceux-ci, où R<1> et R<2> sont identiques ou différents et représentent alkyle C1-C6 linéaire ou ramifié et/ou aryle; R<3> représente alkylène C1-C10 linéaire ou ramifié, arylène C6-C10, alkylarylène C6-C10 ou arylalkylène C6-C10; M représente Mg, Ca, AI, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K et/ou une base azotée protonée; m représente de 1 à 4; n représente de 1 à 4; x représente de 1 à 4; en tant que composant B, de 0 à 75 % en poids d'un synergiste contenant de l'azote ou d'un agent ignifugeant à base de phosphore/azote et en tant que composant C, de 0,1 à 50 % en poids d'un oxyde, hydroxyde, carbonate, silicate, borate, stannate, mélange oxyde-hydroxyde, mélange oxyde-hydroxyde-carbonate, mélange hydroxyde-silicate ou hydroxyde-borate ou de mélanges de ceux-ci, basiques ou amphotères, la somme des composants étant toujours égale à 100 % en poids.

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