07348374 is referenced by 15 patents and cites 15 patents.

According to the present invention, powder coating compositions comprise one or more than one thermoplastic or thermosetting polymer or resin and one or more than one finely divided magnetic material, such as a ferromagnetic material. Preferred magnetic materials include Ni1−xZnxFe2O4 compounds, wherein 0.4≦X≦0.75, piezoelectric compounds, ferrimagnetic δFeOOH, Fe—Ni—B, Cu2MnIn, transparent polymer-Cobalt oxide nanocomposites and soft ferrites. In addition, the present invention provides methods of making powder coatings on a substrate comprising applying to a substrate a resinous powder coating composition comprising one or more than one magnetic material to form a powder coating layer, followed by induction heating to melt the applied powder coating to form a coating film and, optionally, to cure the powder coating. The powder coatings remain at a pre-selected temperature equal to or less than the Curie temperature (TC) of the one or more than one finely divided magnetic material during induction heating of the powder coating without directly heating the substrate. Powder coatings on metal parts may also be induction heat cured.

Title
Induction cured powder coatings for temperature sensitive substrates
Application Number
10/983115
Publication Number
7348374 (B2)
Application Date
November 5, 2004
Publication Date
March 25, 2008
Inventor
Franco Martinazzo
Montebelluna
IT
Agent
Andrew E C Merriam
Assignee
Rohm and Haas Company
PA, US
IPC
C09D 5/00
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