Title:
DIIMONIUM COMPOUNDS AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2006/120888
Kind Code:
A1
Abstract:
[PROBLEMS] To provide near infrared ray absorbing compounds which are free from antimony and arsenic and which are excellent in stability, particularly in heat resistance, light fastness, and moist heat resistance; and infrared ray absorption filters and optical recording media, which are made by using the compounds and which are excellent in heat resistance and so on. [MEANS FOR SOLVING PROBLEMS] Diimonium compounds represented by the general formula (1) and near infrared ray absorption filters made by using the compounds: (1) wherein R1 to R8 are each independently hydrogen or an optionally substituted aliphatic hydrocarbon group; R9 to R10 are each independently an optionally halogenated aliphatic hydrocarbon group; R11 is substituted or unsubstituted aryl; and A and B may be substituted.
Inventors:
KURATA TAKAAKI (JP)
Application Number:
PCT/JP2006/308608
Publication Date:
November 16, 2006
Filing Date:
April 25, 2006
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
KURATA TAKAAKI (JP)
KURATA TAKAAKI (JP)
International Classes:
C07C251/30; B41M5/26; C09K3/00; G02B5/22; G11B7/244
Domestic Patent References:
| WO2006028006A1 | 2006-03-16 |
Foreign References:
| JP2005049848A | 2005-02-24 |
Attorney, Agent or Firm:
Kawaguchi, Yoshio (Yuhsen Shinjuku Gyoen Bldg. 1-11, Shinjuku
1-chome, Shinjuku-k, Tokyo 22, JP)
Download PDF: