摘要:
This invention relates to an optical recording medium, comprising a substrate, a reflecting layer and a recording layer based on compounds of formula (I), (II), (III) or (IV). Attention is drawn to the description for the precise meanings of the substituents. Recording and playback are carried out especially at a wavelength of from 350 to 500 nm, for example using a blue laser. The recording and playback quality is excellent and allows high storage density. Likewise claimed are some novel compounds of formula (I), (II), (III) or (IV), as well as an optical recording medium comprising, in the following arrangement, a) a supporting material consisting of a reflecting metal or, preferably, of a polymer having a reflection metallic layer; b) an optical recording layer; c) a separating layer consisting of a metallic, crosslinked organometallic or dielectric inorganic substance; and c) a covering layer.
摘要:
A dye for ink-jet printing on both hydrophilic and hydrophobic papers. The dye includes a chromophore ionically coupled to a counterion. One of the chromophore and the counterion includes a hydrophilic moiety. The other includes a hydrophobic moiety.
摘要:
A silver halide photographic light-sensitive material is disclosed, comprising at least one silver halide emulsion layer, wherein the silver halide grain contained in said emulsion layer is silver chloroiodide or silver chloroiodobromide having a silver chloride content of 90 mol % or more and a silver iodide content of 0.01 to 1.0 mol %, at least one hexacyano complex is doped in an amount of at least 1null10null7 mol % based on the total silver amount, and said emulsion layer contains a methine dye represented by the following formula (I): 1 wherein Y represents an atomic group necessary for forming a heterocyclic ring or an atomic group necessary for forming a benzene ring condensed with a heterocyclic ring, which may further be condensed with another carbon ring or heterocyclic ring or may have a substituent, Z1 and Z2 each represents a single bond or an atomic group necessary for forming a nitrogen-containing heterocyclic ring which may further be condensed with another carbon ring or heterocyclic ring or may have a substituent, R represents an alkyl group, an aryl group or a heterocyclic group, D represents a group necessary for forming a methine dye, L1 and L2 each represents a methine group, p represents 0 or 1, M represents a counter ion, and m represents a number of 0 or more necessary for neutralizing the electric charge within the molecule.
摘要:
Basic dyes of the formula ##STR1## where n is from 1 to 3,CuPc is a copper phthalocyanine radical,R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.2 is C.sub.1 -C.sub.4 -alkyl,R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.4 is C.sub.1 -C.sub.4 -alkyl andAn.sup..crclbar. is the equivalent of an anion,with the proviso that R.sup.1 and R.sup.3 are not both hydrogen, are useful for dyeing or printing polymeric material.
摘要:
Salts of ionic dyes with compounds which contain at least one ammonium, cycloammonium or immonium group and at least one aliphatic, cycloaliphatic or carbonyl radical-substituted aromatic group or containing a piperazine or piperidine group or a heteroaromatic group selected from those of the triazine, pyrimidine, quinazoline, quinoxaline, phthalazine or phthalimidine series or which contain at least two carboxylic acid groups, at least one amino group and at least one carboxylic acid group or at least one sulfonic acid group and one aliphatic, cycloaliphatic, monocyclic aromatic or heteroaromatic group are useful for dyeing synthetic materials, particularly synthetic polyamides in the mass. The obtained dyeings have exceptionally good wet fastness.
摘要:
Light-stable film-forming salts of a sulfonated polymer, especially a sulfonated polyester, and a cationic dye. When these dye-polysalts are coated onto shaped polymeric structures, especially transparent self-supporting films, the resultant products have important optical uses. A polyester film coated with certain red or amber blends of dye-polysalts and provided with a pressure-sensitive adhesive coating is useful as a lithographers' tape.
摘要:
A (+)-charged dye transition metal complex, particularly a complex of platinum and a (+)-charged dye such as rhodamine 123. These products demonstrate antitumor and radio-sensitizing activity.
摘要:
A (+)-charged dye transition metal complex, particularly a complex of platinum and a (+)-charged dye such as rhodamine 123. These products demonstrate antitumor and radio-sensitizing activity.
摘要:
A process for laminating two or more transparent or translucent substrates or one transparent and one opaque substrate together which comprises the steps of:coating a photohardenable composition on one surface of a first translucent substrate, said photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound and a dye-counter ion complex, said complex being capable of absorbing actinic radiation and producing free radicals which initiate free radical polymerization or crosslinking of said compound, and preferably being photobleachable,applying a second translucent substrate to said photohardenable composition such that said photohardenable composition is interposed between said first translucent substrate and said second translucent substrate, andexposing said substrates to actinic radiation.
摘要:
Pigments of the general formulaF.multidot.Het (I)where F is the cation of a cationic dye which has an absorption maximum at >700 nm and may or may not contain anionic groups and Het is an anion of a heteropolyacid based on tungsten, molybdenum, vanadium or a mixture of these with phosphorus, silicon, cobalt, aluminum, manganese, chromium, nickel or a mixture of these or a copper(I)-hexacyanoferrate(II) anion, are superior to the known IR dyes in terms of thermal stability and photostability, and give optical recording media having superior properties, such as a high signal/noise ratio.