Polyamide compositions incorporating non-melt-processable...

Details Polyamide compositions incorporating non-melt-processable... Polyamide compositions incorporating non-melt-processable...

C - Chemistry, Metallurgy

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C08L 77/00 (2006.01) C08F 259/08 (2006.01) C08K 3/00 (2006.01) C08K 3/16 (2006.01) C08L 51/00 (2006.01) C08L 77/02 (2006.01) C08L 77/06 (2006.01) C08K 5/00 (2006.01) C08L 27/18 (2006.01)

Patent

CA 2496877

Polyamide compositions containing non-melt-processible fluoropolymers as additives, and processes for making such additives. The fluoropolymer particles have a standard specific gravity (SSG) of less than 2.225 and comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene.

L'invention concerne des compositions de polyamide qui renferment des additifs sous la forme de fluoropolymères ne se prêtant pas au traitement par fusion, et des procédés d'élaboration correspondants. Les particules de fluoropolymère ont une gravité spécifique ordinaire inférieure à 2,225 et comportent un noyau en polytétrafluoroéthylène de poids moléculaire élevé et une coque en polytétrafluoroéthylène de poids moléculaire moins élevé ou en polytétrafluoroéthylène modifié.

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