| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an endothermic particle for covering the surface of a material for heat-dissipation or antioxidation. <P>SOLUTION: The endothermic particle has a diameter of 1-1,000μm and is composed of a shell part (1) and a core part (2). The shell part 1 is made of a polymer selected from melamine formaldehyde resin, urea resin, polyurethane and acrylic resin, the core part 2 has a melting point of 35-70°C and is made of an endothermic material selected from a group containing straight-chain alkyl, alcohol and organic acid, and the weight of the shell part 1 is 1/20 to 1/2 of the weight of the core part 2. <P>COPYRIGHT: (C)2004,JPO |
