Abstract: Disclosed herein is an optical recording medium permitting recording and reading-out of signals without any reflective layer. The optical recording medium comprises a transparent substrate and an optical recording layer provided directly on the substrate. The recording layer contains at least 80 wt. % of a phthalo/naphthalocyanine dye represented by the following general formula (I): ##STR1## wherein L.sub.1, L.sub.2, L.sub.3 and L.sub.4 mean individually ##STR2## Q.sub.1, Q.sub.2, Q.sub.3, Q.sub.4, Q.sub.5, Q.sub.6, Q.sub.7, Q.sub.8, Q.sub.9 and Q.sub.10 denote individually a hydrogen atom or ##STR3## group; R.sub.1, R.sub.2 and R.sub.3 is individually a straight-chain or branched alkyl group having 1-12 carbon atoms, alkenyl group, phenyl group or substituted phenyl group, and two or more ##STR4## groups are contained on average in the molecule represented by the general formula (1); and M stands for a metal or a metal oxide or metal halide.

Abstract: An optical recording medium comprising practically a naphthalocyanine dye represented by the following general formula (I): ##STR1## wherein M means a metal, metal oxide or metal halide, and --OR.sub.1, --OR.sub.2, --OR.sub.3 and --OR.sub.4 are the same or different and denote ether groups respectively having R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each of which is a saturated or unsaturated hydrocarbon group having 4-12 carbon atoms.

Abstract: Disclosed herein is an optical recording medium which includes a recording layer composed of (a) an organometallic complex having an absorption maximum in the wavelength range of 600-1200 nm, (b) a resinous binder and (c) a sensitizer capable of generating radicals upon exposure to ultraviolet rays. The recording of information on the recording layer is effected with ease by exposure to ultraviolet rays. The reproduction of recorded information is effected by a laser beam having an oscillatory wavelength in the visible or near infrared wavelength range.

Abstract: Disclosed herein is a coating composition which contains a urethane-modified (meth)acrylate compound and a mono(meth)acrylate and is curable upon its exposure to radiation. Also disclosed herein is a coating, especially, a primary coating for an optical fiber, which coating or cladding is composes of a cured material obtained by curing the composition through its exposure to radiation.

Abstract: Conductive cured products which have superior initial conductivity which is substantially retained even under high temperature and humidity conditions are obtained by curing a resinous composition comprising (a) a metallic copper powder, (b) a copper compound, (c) a compound having a 1,4-dihydroxy benzene ring or 1,2-dihydroxy benzene ring structure, and (d) a resinous curable component. Additionally, inclusion of a chelate forming compound in the uncured composition prevents a curing phenomenon on the surface of the composition during storage. The compound having the dihydroxy benzene ring (compound c) reduces the copper compound (b) to deposit metallic copper, and the resinous curable component integrates the constituents into a conductive product upon curing. The compositions are used as paints, adhesives, printing inks, and moulded articles, and they are useful in the electric, electronic, automobile, and housing fields.