Infrared absorbent comprising a metal complex compound containin

Details Infrared absorbent comprising a metal complex compound containin Infrared absorbent comprising a metal complex compound containin

1988-07-06

1990-05-01

Lee, Mary C.

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

1062867, 106 22, 430944, 252587, 544 4, 546 6, 548107, 549 3, F21V 904, G02B 520

Patent

active

049213172

ABSTRACT:
The present invention relates to a metal complex compound useful in an infrared absorbent prepared by coordinating two bidentate ligands of the following formula (iii): ##STR1## wherein R.sup.1 and R.sup.2 each independently represents a hydrogen atom, a cyano group, or a substituted or unsubstituted alkyl, aryl or heterocyclic group, which may be the same or different.
The present invention is further directed to an infrared absorbing composition comprising a metal complex compound prepared by coordinating two bidentate ligands of formula (iii) above to a center metal and neutralizing a complex ion with a cation.
The present invention is also directed to an infrared absorbing article which comprises a metal complex compound prepared by coordinating two bidentate ligands of formula (iii) above to a center metal and neutralizing such a complex with a phosphonium cation.

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