A polymer composition of low gas permeability. The composition includes an exfoliated organically-modified clay, butyl rubber, and a polymeric exfoliant. A method for producing the butyl composition by dry mixing the butyl rubber with the exfoliated clay is also provided....http://www.google.fr/patents/US7576155?utm_source=gb-gplus-shareBrevet US7576155 - Method for clay exfoliation, compositions therefore, and modified rubber containing same
Method for clay exfoliation, compositions therefore, and modified rubber ...
