US Patent 8137592 - Melt blending CNTs into polymer

http://www.freepatentsonline.com/8137592.html

This patent from Sabic Innovative Plastics IP B.V. includes some broad claims for melt blending carbon nanotubes into plastics. Claim 1 reads:

1. A method of incorporating an additive into a polymer composition, comprising:

melt blending a polymer with a dispersion comprising a liquid carrier, an unmodified clay, and an additive;

wherein the additive comprises conductive carbon black, carbon nanotubes, or a combination thereof.