Halogen-free flame-retardant composition

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 33/06 (2006.01) C08K 5/3492 (2006.01) C08K 5/49 (2006.01) C08L 61/28 (2006.01) C08L 67/02 (2006.01) C08L 77/00 (2006.01) C09K 21/12 (2006.01) C09K 21/14 (2006.01)

Patent

CA 2374068

The invention relates to a halogenfree. flame-retardant composition that comprises at least (A) an organic phosphorus compound and (B) melamine or a compound derived from melamine, or a melamine- phosphorus compound (AB) and a polymer compound comprising an olefine having 2-12 carbon atoms and 0.1-30 weight %(relative to the weight of the polymer compound) of a compound containing acid, acid anhydride or epoxy groups. The invention also relates to a polycondensate composition that contains the flame-retardant composition according to the invention. The flame- retardant composition according to the invention presents the advantage that the burning time of the polycondensate composition in which the composition according to the invention is used is substantially shortened. Preferably the flame-retardant composition is used in polyesters or polyamides.

La présente invention concerne une composition ignifuge exempte d'halogène. Cette composition comprend au moins (A) un composé de phosphore organique et (B) de la mélamine ou un composé dérivé de la mélamine, ou un composé mélamine-phosphore (AB) et un composé polymère comprenant un oléfine contenant de 2 à 12 atomes de carbone et 0,1 à 30 % en poids (par rapport au poids du composé polymère) d'un composé contenant des groupes acide, anhydride d'acide ou epoxy. L'invention concerne également une composition de polycondensat contenant la composition ignifuge décrite dans l'invention. Cette composition ignifuge présente l'avantage de raccourcir le temps de combustion de la composition du polycondensat dans laquelle elle est utilisée. De préférence, la composition ignifuge est utilisée dans les polyesters et les polyamides.

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