Blend of polyphosphate flame retardant and liquid...

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 5/523 (2006.01) C08J 3/20 (2006.01) C09K 21/12 (2006.01) C09K 21/14 (2006.01)

Patent

CA 2259189

The disclosure teaches a blend of a predominant amount of a polyphosphate flame retardant and an effective amount of a liquid crystalline additive for viscosity reduction and compatibilization when blended with a thermoplastic polymer, as compared to use of just the polyphosphate flame retardant alone. The polyphosphate can comprise resorcinol bis(diphenyl phosphate) and/or its higher oligomers. The liquid can be a liquid crystalline segmented block copolymer or a liquid crystalline oligomer.

Cette invention concerne un mélange constitué d'une quantité prédominante d'un produit ignifuge à polyphosphate et d'une quantité efficace d'un adjuvant à cristaux liquides, ce qui donne une viscosité réduite et une compatibilité améliorée lorsque le mélange est associé à un polymère thermoplastique, comparé au résultat qu'on obtient lorsque le produit ignifuge à polyphosphate est utilisé seul. Le polyphosphate peut comprendre un résorcinol bis(phosphate de diphényle) et/ou ses oligomères supérieurs. Le liquide peut être un copolymère bloc segmenté à cristaux liquides ou un oligomère à cristaux liquides.

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