Yamamoto Chemicals, Inc.

Other

Mitsui Chemicals, Inc.

Kenichi Kato

Kenichi Sugimoto

Keisuke Takuma

Tsutami Misawa

Akira Ogiso

Taizo Nishimoto

Yojiro Kumagae

Hisashi Tsukahara

Toshihiro Masaoka

Kenji Mizoue

Hiroyuki Sasaki

Akihiro Kohsaka

Provided are a novel naphthalocyanine compound, which has strong absorption in a near-infrared range, extremely weak absorption in a visible range, and high resistance such as light resistance and heat resistance, and exhibits excellent solubility in an organic solvent or a resin, a heat ray shielding material, and uses of the naphthalocyanine compound such as a heat ray shielding material and the like. The naphthalocyanine compound is represented by General Formula (1).   

Naphthalocyanine compound, method for producing same, and use thereof

Optical recording medium and dipyrromethene metal chelate compound for use therein

A novel optical recording medium having at least a recording layer and a reflective layer on a substrate is herein disclosed, wherein at least one dipyrromethene metal chelate compound represented by formula (1) is contained in the recording layer: ##STR1## wherein R.sub.1 and R.sub.9 are each independently an alkenyl group, an aryl group or a heteroaryl group; R.sub.2 to R.sub.8 are each independently a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl, alkoxy, alkenyl, acyl, alkoxycarbonyl, aralkyl, aryl or heteroaryl group having 20 or less carbon atoms; and M is a transition metal.

Optical recording medium and dipyrromethene metal chelate compound for

Growing community of inventors

Hyogo, Japan

Kenichi Kato