Method to make an article comprising a polymer concentrate

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 3/18 (2006.01) C08J 3/22 (2006.01) C08K 5/00 (2006.01)

Patent

CA 2605973

This invention relates to a method to make an article comprising the steps of combining a semi-amorphous polymer having a heat of fusion of less than 70 J/g with a plasticizer and optionally one or more additives, to produce a polymer concentrate, combining the polymer concentrate with one or more final materials to produce an article precursor; and forming the article at least partially from the article precursor, wherein the polymer concentrate preferably shows no visible phase separation as demonstrated by the polymer concentrate having no visually detectable loss of the plasticizer after a portion of the polymer concentrate is aged on an absorbent surface for 24 hours at 25~C. An article produced by the method is also disclosed.

Cette invention concerne un procédé de fabrication d'un article consistant à: combiner un polymère semi-amorphe ayant une chaleur de fusion de moins de 70 J/g avec un plastifiant et éventuellement un ou plusieurs additif(s), de manière à obtenir un concentré de polymère; combiner le concentré de polymère avec un ou plusieurs matériaux finaux pour obtenir un précurseur de l'article; et former l'article au moins de manière partielle à partir du précurseur de l'article; ledit concentré de polymère ne présentant de préférence aucune phase de séparation visible, tel qu'un concentré de polymère ne présentant aucune perte de plastifiant visuellement détectable après qu'une partie de ce concentré de polymère ait été vieillie sur une surface absorbante pendant 24 heures à 25 °C. L'invention concerne également un article fabriqué par ce procédé.

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