Compositions – Magnetic – With wax – bitumen – resin – or gum
Patent
1995-05-26
1996-06-25
Willis, Jr., Price
Compositions
Magnetic
With wax, bitumen, resin, or gum
252 6256, 252 6255, 252 6251R, 428363, 428403, 428406, 428407, 428364, 428402, 427217, 427222, 427128, 427132, H01F 100, B32B 516, B05D 500
Patent
active
055297080
ABSTRACT:
A composition comprising: (1) a susceptor of magnetically coupled radio frequency energy comprising a non-magnetic particulate substrate, e.g., an electrically insulative material in particulate form, bearing a thin magnetic coating, e.g., a magnetic inorganic film, and (2) a matrix that is substantially non-reflective of radio frequency energy, e.g., silicone rubber, which matrix can be heated upon the composition's being subjected to magnetically coupled radio frequency energy. It has been discovered that thin magnetic coatings on non-magnetic particles provide energy transfer with induction heaters equal to or better than many commonly used solid susceptor particles. It has also been discovered that the temperature of the composition of this invention can be regulated so as not to exceed a predetermined temperature.
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Chamberlain Craig S.
Fish Brian J.
Palmgren Charlotte M.
Diamond Alan D.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Co.
Truesdale Carole
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