Title:
NEAR-INFRARED-ABSORBING PARTICLES, PROCESS FOR PRODUCING SAME, DISPERSION, AND ARTICLE THEREOF
Document Type and Number:
WIPO Patent Application WO/2011/040578
Kind Code:
A1
Abstract:
Provided are near-infrared-absorbing particles which have a high transmittance in the visible light region and a low transmittance in the near infrared region and which, when incorporated, can give a near-infrared-absorbing coating film that abruptly changes in transmittance in the wavelength range of 630-700 nm. Also provided are a process for producing the particles and a dispersion of the particles.
The near-infrared-absorbing particles comprise crystallites of A1/nCuPO4 and have a number-average aggregate diameter of 20-200 nm. In the formula, A is one or more atoms or groups selected from a group consisting of alkali metals (Li, Na, K, Rb, and Cs), alkaline earth metals (Mg, Ca, Sr, and Ba), and NH4, and n is 1 when A is an alkali metal or NH4 or is 2 when A is an alkaline earth metal.
Inventors:
ITO WAKAKO (JP)
ABE KEISUKE (JP)
HASEGAWA MAKOTO (JP)
OSAWA MITSUO (JP)
ABE KEISUKE (JP)
HASEGAWA MAKOTO (JP)
OSAWA MITSUO (JP)
Application Number:
PCT/JP2010/067166
Publication Date:
April 07, 2011
Filing Date:
September 30, 2010
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
ITO WAKAKO (JP)
ABE KEISUKE (JP)
HASEGAWA MAKOTO (JP)
OSAWA MITSUO (JP)
ITO WAKAKO (JP)
ABE KEISUKE (JP)
HASEGAWA MAKOTO (JP)
OSAWA MITSUO (JP)
International Classes:
C09K3/00; C01B25/45; C09D7/61; C09D201/00; G02B5/22
Domestic Patent References:
| WO2009020207A1 | 2009-02-12 |
Foreign References:
| JPH0753945A | 1995-02-28 | |||
| JPH06207161A | 1994-07-26 | |||
| JPH06306349A | 1994-11-01 |
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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