| US 7,576,199 B2 | ||
| Near infrared dyes | ||
| Vladek Kasperchik, Corvallis, Oreg. (US); Vyacheslav Olkhovik, Minsk (Belarus); Andreii Pap, Minsk (Belarus); Dmiitriy Vasilevskii, Minsk (Belarus); Cari L. Dorsh, Corvallis, Oreg. (US); and Sterling Chaffins, Corvallis, Oreg. (US) | ||
| Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US) | ||
| Filed on Apr. 23, 2007, as Appl. No. 11/789,018. | ||
| Prior Publication US 2008/0262222 A1, Oct. 23, 2008 | ||
| Int. Cl. C07B 47/00 (2006.01); C07D 487/22 (2006.01) | ||
| U.S. Cl. 540—145 | 15 Claims |
| 1. A near infrared (NIR) dye comprising:
a silicon 2,3-naphthalocyanine derivative having the formula I:
 wherein R is (CH2CH (CH3)O)mR2; wherein m is 3 to 6; wherein R2 is selected from a hydrocarbon having from 6 to 10 carbon atoms.
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