Claims
- 1. A heat-absorbing particle having a diameter of 1˜1000 μm and comprising a shell portion and a core portion, the shell portion being made of a high molecular polymer selected from a group consisting of melamine-formaldehyde, urea-formaldehyde resins, polyurethanes, and acrylics, the core portion being made of a heat-absorbing material that has a melting point at about 35° C.-70° C. and that is selected from a group consisting of straight chain alkanes, alcohols, and organic acids, a weight of the shell portion being about {fraction (1/20)}-½ of that of the core portion.
- 2. The heat-absorbing particle as claimed in claim 1, wherein the heat-absorbing material is selected from a group consisting of paraffin, docosane, tetracosane, tetradecanol, hexadecanol, octodecanol, dodecanic acid, tetradecanoic acid, hexadecanoic acid, and hexadecanoic acid.
- 3. The heat-absorbing particle as claimed in claim 1, wherein the heat-absorbing material further includes a dye.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This is a continuation-in-part application of U.S. patent application Ser. No. 10/051,110 filed on Jan. 22, 2002.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
10051110 |
Jan 2002 |
US |
Child |
10195616 |
Jul 2002 |
US |