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AssigneeMinnesota Mining and Manufacturing Company
InventorsCraig S. Chamberlain, Glen Connell, Pierre H. LePere, Chris A. Minick, Charlotte M. Palmgren, William C. Tait, George F. Vesley, Patrick G. Zimmerman
Estimating the term…
Composition comprising (a) susceptors having the capability of absorbing microwave energy, said susceptors comprising a particulate substrate substantially non-reflective of microwave energy and a coating capable of absorbing microwave energy, and (b) a matrix substantially non-reflective of microwave energy. Susceptors are typically particles having a thin-film coating thereon. The matrix typically comprises polymeric or ceramic materials that are stable at temperatures conventionally used in microwave cooking. The composition allows reuse of the susceptors, eliminates decline in heating rate, eliminates arcing, allows the heating rate to be controlled, allows overheating to be controlled, and allows formation of microwave heatable composite materials having very low metal content.
An article comprising a flowable meltable particle being spheroidal, rod-like or acicular in shape and having a surface, said surface bearing a coating having an electrical resistivity from 1.times.10.sup.-6 Ohm-cm to 1.times.10.sup.7 Ohm-cm which absorbs sufficient microwave energy to cause said particle to melt and flow.
Method of preparing a hot melt adhesive capable of being heated by microwave energy comprising the steps of:
Method of preparing a susceptor having a capability of absorbing microwave energy, said susceptor comprising a particle substantially non-reflective of microwave energy and a coating capable of absorbing microwave energy comprising the steps of:
Dependencies are inferred from the claim text.