Mixtures of polyamide block polymers and of copolymers...

Details Mixtures of polyamide block polymers and of copolymers... Mixtures of polyamide block polymers and of copolymers...

C - Chemistry, Metallurgy

08

L

400/3018

C08L 77/00 (2006.01) C08J 3/00 (2006.01) C08L 25/02 (2006.01) C08L 71/02 (2006.01) C08L 77/06 (2006.01) C08L 77/12 (2006.01)

Patent

CA 2224504

This invention involves a mixture of polyamide block polymers (A) and of copolymers (B) consisting of vinyl aromatic units and non-saturated carboxylic acid anhydride units. The quantity of (B) is sufficient to make the Melt Flow Index (Mfi) of the mixture of (A) and (B) less than the Melt Flow Index of (A) alone. It also involves masterbatches of (A) and (B).

La présente invention concerne un mélange de polymères (A) à blocs polyamides et de copolymères (B) comprenant des motifs vinylaromatiques et des motifs anhydride d'acide carboxylique insaturé, la quantité de (B) étant suffisante pour que l'indice de fluidité (ou Melt Flow Index MFi) du mélange de (A) et (B) soit inférieur à l'indice de fluidité de (A) seul. Elle concerne aussi des mélanges maîtres de (A) et (B).

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