C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 77/06 (2006.01) C08K 3/22 (2006.01) C08K 3/32 (2006.01) C08K 7/14 (2006.01) C08K 13/02 (2006.01) H05K 1/03 (2006.01)
Patent
CA 2203346
The thermal stability of flame retardant, high temperature polyamides containing an organohalogen flame-retardant such as brominated polystyrene in combination with an antimony compound such as sodium antimonate during molding and similar melt fabrication operations is markedly improved when further combined with a minor amount of calcium oxide. The thermal stability of these compositions are much improved over analogous flame retardant polyamides formulated with magnesium oxide and/or zinc oxide.
Lors des opérations de moulage et d'autres procédés de fusion de même type, la stabilité thermique de polyamides ininflammables pour hautes températures, renfermant un ignifugeant organohalogéné, comme le polystyrène bromé, en combinaison avec un composé de l'antimoine, comme l'antimoniate de sodium, se trouve sensiblement améliorée après addition d'une petite quantité d'oxyde de calcium. La stabilité thermique de ces compositions est nettement meilleure que celle de polyamides ignifugeants de même type, formulés avec de l'oxyde de magnésium et (ou) de l'oxyde de zinc.
Amoco Corporation
Gowling Lafleur Henderson Llp
Solvay Advanced Polymers L.l.c.
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