Thermoplastic graft copolymers and their use as compatibilizers

Details Thermoplastic graft copolymers and their use as compatibilizers Thermoplastic graft copolymers and their use as compatibilizers

C - Chemistry, Metallurgy

08

G

400/2022, 400/30

C08G 81/00 (2006.01) C08F 8/00 (2006.01) C08F 210/10 (2006.01) C08F 255/00 (2006.01) C08G 81/02 (2006.01) C08L 51/08 (2006.01)

Patent

CA 2003739

Graft copolymers are disclosed having the formula: (see fig. I) wherein R and R' are hydrogen, alkyl, and the primary and secondary alkyl halides, a ranges from about 14 to 70,000, b ranges from 0 to about 70,000, c ranges from 0 to about 70,000, d ranges from about 1 to 70,000, X comprises a halogen, and Nu is a nucleophilic residue provided by a thermoplastic polymeric nucleophile having a molecular weight of at least about 1,000 and being sufficiently nucleophilic electrons to benzyl halides. Methods for compatibilizing polymer blends utilizing such graft copolymers are also disclosed.

Divulgation de copolymères greffés de formule (voir figure I), dans laquelle : R et R' représentent un atome d'hydrogène, un alkyle ou un halogénoalkyle primaire ou secondaire; a est un nombre allant de 14 à 70 000; b est un nombre allant de 0 à environ 70 000; c est un nombre allant de 0 à environ 70 000; d est un nombre allant de 1 à environ 70 000; X contient un halogène; et Nu est un résidu nucléophile provenant d'un nucléophile polymère thermoplastique ayant un poids moléculaire d'au moins environ 1 000 et étant suffisamment nucléophile pour donner des électrons aux halogénures de benzyle. On divulgue aussi des méthodes pour rendre compatibles des mélanges de polymères à l'aide de tels copolymères greffés.

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