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Title:
MONOSUBSTITUTED SQUARIC ACID METAL COMPLEX DYES AND THEIR USE IN OPTICAL LAYERS FOR OPTICAL DATA RECORDING
Document Type and Number:
WIPO Patent Application WO2006053834
Kind Code:
A3
Abstract:
The present invention relates to new monosubstituted squaric acid metal complex dyes and their use in optical layers for optical data recording, preferably for optical data recording using a laser with a wavelength up to 450 nm. The invention further relates to a write once read many (WORM) type optical recording medium capable of recording and reproducing information with radiation of blue laser, which employs a monosubstituted squaric acid metal complex dye in the optical layer.

Inventors:
WEISS ANDRE (DE)
Application Number:
EP2005055742W
Publication Date:
July 27, 2006
Filing Date:
November 04, 2005
Export Citation:
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Assignee:
CLARIANT INTERNATIONAL LTD
WEISS, ANDRE
International Classes:
G11B7/24; C07F15/04; C07F19/00; G11B7/246; G11B7/249; G11B7/2492; G11B7/2498; G11B7/2467; G11B7/2495; G11B7/253; G11B7/2531; G11B7/2533; G11B7/2534; G11B7/2535; G11B7/254; G11B7/2542; G11B7/257; G11B7/2575
Domestic Patent References:
WO2003085005A12003-10-16
Foreign References:
EP1449890A12004-08-25
EP1335357A12003-08-13
EP1335215A12003-08-13
EP1334998A12003-08-13
EP1267338A22002-12-18
EP0493700A11992-07-08
EP0492200A11992-07-01
EP0427007A11991-05-15
EP0424777A11991-05-02
Other References:
MATSUI M ET AL: "3-Aryl-4-hydroxycyclobut-3-ene-1,2-diones as sensitizers for TiO2 solar cell", DYES AND PIGMENTS, vol. 58, no. 3, September 2003 (2003-09-01), pages 219 - 226, XP004434350, ISSN: 0143-7208
SPRENGER, H. E. ET AL: "Cyclobutenediylium dyes", ANGEWANDTE CHEMIE, INTERNATIONAL EDITION, vol. 7, no. 7, 1968, pages 530 - 535, XP008023314, ISSN: 0570-0833
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