Halogenated fire-retardant compositions and foams and...

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 5/00 (2006.01) C08J 9/00 (2006.01) C08K 3/02 (2006.01) C08K 5/02 (2006.01) C08K 5/06 (2006.01) C08K 9/10 (2006.01)

Patent

CA 2398123

The compositions of the present invention comprise at least one substantially random interpolymer (or blends with other thermoplastics), one or more flame retardant compounds and, optionally one or more flame-retardant synergists. For levels of flame retardants which yield a halogen content of 0.05 to 50 parts-per-hundred resin (phr), depending on whether the structure is foamed or not, which in turn result in LOI levels greater than or equal to 23 percent oxygen, the compositions of the present invention unexpectedly still retain desirable mechanical properties such as compressive strength, toughness, and elasticity.

La présente invention concerne des compositions comprenant au moins un interpolymère sensiblement aléatoire (ou des mélanges avec d'autres thermoplastiques), au moins un composé ignifuge et, éventuellement, au moins un synergiste ignifuge. Les compositions selon la présente invention présentent, de façon inattendue, des propriétés mécaniques recherchées, telles que la résistance, la ténacité et l'élasticité en compression même en présence de taux d'ignifuges libérant un contenu halogène de 0,05 à 50 parties pour cent parties de résine (phr) selon que la structure est une structure mousse ou une structure non mousse, ce qui résulte en un niveau d'indice limite d'oxygène supérieur ou égal à 23 pourcent d'oxygène.

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