Extruder grafting process for pvc impact modifier

Details Extruder grafting process for pvc impact modifier Extruder grafting process for pvc impact modifier

C - Chemistry, Metallurgy

08

F

18/1214, 400/205

C08F 255/02 (2006.01) C08F 255/00 (2006.01) C08L 27/06 (2006.01) C08L 51/06 (2006.01)

Patent

CA 1144681

ABSTRACT OF THE DISCLOSURE PVC impact modifiers prepared by grafting, in a melt reaction, a monomer system comprising at least 50% by weight methyl methacrylate to a polymer of ethylene, exclusive of high density polyethylene, or a mixture of two or more such polymers. An extruder process for pre- paring the modifiers, and blends of the modifiers with polyvinyl chloride, are disclosed.

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