| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an infrared reflecting film manufactured at a low cost, allowing expansion of a film area, and having a superior infrared reflectivity, high visible light transmittance, and superior uniform optical characteristics, and to provide a manufacturing method thereof, an aqueous colloidal solution for use in the manufacturing method, and a preparation method of the aqueous colloidal solution. <P>SOLUTION: The aqueous colloidal solution distributedly including metal oxide particles, the metal oxide particles are collagen peptides or gelatines of mean molecular weight of 70,000 or less, and the metal oxide particles are formed under the presence of low-molecular-weight gelatines containing no gelatines of molecular weight of 100,000 or more, or containing 1.0 mass% or less of gelatines of molecular weight of 100,000 or more. <P>COPYRIGHT: (C)2012,JPO&INPIT |
