High flow polyvinyl halide compound and methods of making...

Details High flow polyvinyl halide compound and methods of making... High flow polyvinyl halide compound and methods of making...

C - Chemistry, Metallurgy

08

L

C08L 27/06 (2006.01) B29C 45/00 (2006.01) C08K 3/10 (2006.01) C08K 3/12 (2006.01) C08K 5/10 (2006.01) C08K 5/50 (2006.01) C08L 27/00 (2006.01) C08L 91/06 (2006.01)

Patent

CA 2731175

A high flow polyvinyl halide compound is disclosed. The compound employs conventional ingredients plus a combination of phosphite stabilizer and hydrotalcite stabilizer which improve the melt flow index of the compound by at least 20%, as compared with a compound without the two types of stabilizers. The dramatically improved melt flow allows a molding cycle time reduction by as much as 22% because of a five-fold reduction in the fill step.

L'invention concerne un composé halogénure de polyvinyle de fluidité élevée. Le composé emploie des ingrédients classiques plus une combinaison de stabilisant de type phosphite et de stabilisant de type hydrotalcite qui améliore l'indice de fluidité à l'état fondu du composé d'au moins 20 %, par rapport à un composé qui ne contient les deux types de stabilisant. L'amélioration spectaculaire de l'indice de fluidité à l'état fondu permet de réduire la durée du cycle de moulage de 22 % grâce à une division par 5 de l'étape de remplissage.

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