Patent ID: 6812272
Filing Date: 2004-11-02
Classification: C08K,C08L

Abstract:
A process for preparing a nanocomposite material, comprising exfoliating a clay having a layered structure and a cation exchange capacity of from 30 to 250 milliequivalents per 100 gram, with a block copolymer or a graft copolymer, which block copolymer or graft copolymer comprises one or more first structural units (A), which are compatible with the clay, and one or more second structural units (B), which are compatible with a polymeric matrix, and mixing the resultant exfoliated clay with a polymeric matrix with the provisos that each first structural unit (A) is derived of the same type of monomer and that each second structural unit (B) is derived of the same type of monomer.