| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide fine pigment particles as a near-infrared ray-absorbing material that satisfies both invisibility that performs important roles as an optoelectronics-related product such as a near-infrared ray-absorbing filter and other properties, a liquid dispersion and its manufacturing method. <P>SOLUTION: The fine pigment particles comprises fine particles of vanadyl-2,3-naphthalocyanine having an average particle size of at most 0.5μm. The fine particles are manufactured via a liquid dispersion which is obtained by dispersing a mixture of a solvent and vanadyl-2,3-naphthalocyanine using at least one surfactant selected from among cationic surfactants, anionic surfactants and nonionic surfactants thereby converting vanadyl-2,3-naphthalocyanine into fine particles having an average particle size of at most 0.5μm. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
