Method for producing impact-modified polyalkylene...

C - Chemistry – Metallurgy – 08 – L

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C08L 67/02 (2006.01) C08L 69/00 (2006.01)

Patent

CA 2656249

The invention relates to a method for producing impact-modified polyalkylene terephthalate/polycarbonate compositions. Said method comprises the following steps: (i) combining a melt of a glycidyl ester impact modifier with a first portion of polyalkylene terephthalate (component A) in the form of a powder and/or with a first portion of polycarbonate (component B) in the form of a powder, (ii) combining the mixture from (i) with a second portion of polyalkylene terephthalate (component A) and/or with a second portion of polycarbonate (component B) and optionally additional components in the melt, the melt in step (i) having a temperature from 90-175°C.

L'invention concerne un procédé de production de compositions à résilience modifiée de polyalkylène téréphtalate et de polycarbonate, ce procédé consistant à (i) combiner un modificateur de résilience à l'état fondu d'ester de glycidyle avec une première partie de polyalkylène téréphtalate (composant A) sous forme de poudre et/ou avec une première partie de polycarbonate (composant B) sous forme de poudre, (ii) combiner le mélange de (i) avec une deuxième partie de polyalkylène téréphtalate (composant A) et/ou avec une deuxième partie de polycarbonate (composant B), d'autres composants étant éventuellement mélangés à la matière fondue qui, à l'étape (i) a une température de 90 - 175 0C.

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