Solid state modification of multimodal polyethylene

Details Solid state modification of multimodal polyethylene Solid state modification of multimodal polyethylene

C - Chemistry, Metallurgy

08

F

C08F 10/02 (2006.01) C08F 8/06 (2006.01) C08L 23/06 (2006.01)

Patent

CA 2577888

A method for modifying multimodal polyethylene is disclosed. The method comprises reacting a multimodal polyethylene in its solid state with a free radical initiator. The modified polyethylene has significantly increased melt strength, and it is suitable for many applications including blow molding, sheet, pipe, profile, extrusion coating, and foaming applications.

L~invention décrit un procédé pour modifier un polyéthylène multimodal. Le procédé comprend la mise en réaction de polyéthylène multimodal à l~état solide avec un initiateur à radicaux libres. Le polyéthylène modifié présente une résistance à l~état fondu significativement améliorée et convient pour un grand nombre d~applications, y compris les applications de moulage par soufflage, de revêtement par extrusion de feuilles, tuyaux et profilés, et de moussage.

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