US 6,660,867 B2 · Metal complex type squarylium compounds and optical recording media made by using the same

Abstract

An object of the present invention is to provide a material having spectroscopic properties, light resistance, solubility and thermal decomposition properties suitable for recording for DVD-R. More specifically, the present invention provides squarylium compounds in a state of a metal complex represented by the general formula (I): wherein, R1 and R2 are the same or different, and represent an alkyl group optionally having a substituent, an aralkyl group optionally;,having a substituent, an aryl group optionally having a substituent, or a heterocyclic group optionally having a substituent; Q represents a metal atom with a coordination ability; q represents 2 or 3; and A represents an aryl group optionally having a substituent, a heterocyclic group optionally having a substituent, or Y═CH— wherein Y represents an aryl group optionally having a substituent or a heterocyclic group optionally having a substituent.

Claims12

Dependent claims

A squarylium compound in a state of a metal complex represented by the general formula (I):

wherein, R1 and R2 are the same or different, and represent an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, an aryl group optionally having a substituent, or a heterocyclic group optionally having a substituent;
Q represents a metal atom with a coordination ability;
q represents 2 or 3;
and A represents an aryl group optionally having a substituent, a heterocyclic group optionally having a substituent, or Y═CH— wherein Y represents an aryl group optionally having a substituent or a heterocyclic group optionally having a substituent.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

10/203,409Filed 27 Nov 2002

Priority

JP 2000-38719220 Dec 2000

Published

US 2003/0187272 A12 Oct 2003

Granted

9 Dec 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

G11B 7/247
Containing dyes: methine or polymethine dyes
C09B 57/007
Other synthetic dyes of known constitution: squaraine dyes
C09B 57/10
Other synthetic dyes of known constitution: metal complexes of organic compounds not being dyes in uncomplexed form
G11B 7/249
Comprising organic materials only: containing organometallic compounds

Metal complex type squarylium compounds and optical recording media made by using the same

Life of this patent

Metal complex type squarylium compounds and optical recording media made by using the same

Life of this patent

Abstract

Claims12