A microwave susceptor material which comprises a substrate such as paper or paperboard treated with a polar organic compound having microwave interactive characteristics. A salt, which is soluble in the polar organic compound, can be added to alter the microwave heating performance of the material. The...http://www.google.com/patents/US5220141?utm_source=gb-gplus-sharePatent US5220141 - Treatment of paperboard with polar organic compounds to provide microwave interactive stock
