Process for the preparation of carboxylated propylene polymers

C - Chemistry – Metallurgy – 08 – F

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400/5815, 402/59

C08F 8/34 (2006.01) C08L 23/32 (2006.01) C08L 77/00 (2006.01)

Patent

CA 1307617

A B S T R A C T PROCESS FOR THE PREPARATION OF CARBOXYLATED PROPYLENE POLYMERS A process for the preparation of carboxylated propylene homo- and copolymers, which comprises the reaction of a thermoplastic propylene homo- or copolymer with an azidosulfonyl- benzoic acid by mechanically mixing said polymer and said acid at a temperature of at least 180 C in the substantial absence of a free-radical initiator. The carboxylated polymers thus prepared have improved viscosity characteristics and can be used in polymer blends, e.g. with polyamides as well for the preparation of ionomers.

582930

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