Melt processing of an elastomeric olefin polymer

Details Melt processing of an elastomeric olefin polymer Melt processing of an elastomeric olefin polymer

Category

B - Operations, Transporting

Subcategory

29

Subsubcategory

C

IPC codes

B29C 47/00 (2006.01)

Type

Patent

Patent number

CA 2356213

Description

A method to melt process a thermoplastic, partially-crystalline, olefin polymer in a multi-temperature stage extruder wherein the polymer has a broad melting temperature range comprises setting the temperature profile of the extruder such that a portion of the polymer crystallizes in the extruder and passing the resulting partially-crystallized polymer through an extruder die.

L'invention concerne un traitement à l'état fondu d'un polymère oléfinique thermoplastique, partiellement cristallin dans une extrudeuse à étages à températures multiples. Le polymère présente une large plage de températures de fusion. Le procédé consiste à définir le profil de l'extrudeuse de manière qu'une partie du polymère se cristallise dans l'extrudeuse et à passer le polymère partiellement cristallisé obtenu à travers une filière d'extrusion.

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