Method for producing conductive masterbatch

Details Method for producing conductive masterbatch Method for producing conductive masterbatch

2006-09-04

2011-12-13

Kopec, Mark (Department: 1766)

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

C252S511000, C264S105000, C524S495000

Reexamination Certificate

active

08075805

ABSTRACT:
The present invention relates to a method for producing a conductive masterbatch containing a polyamide resin and a carbonaceous filler. The present invention provides a method for producing a conductive masterbatch which can suppress an increase in resin temperature during extrusion, formation of die drips, and strand breakage and can also significantly increase the output of extruding. The method is achieved by the steps of feeding the carbonaceous filler to a molten first polyamide to melt-knead them together and then feeding a second polyamide to the resulting melt-kneaded product to further melt-knead the second polyamide, the carbonaceous filler, and the first polyamide.

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