摘要:
AND THEIR USE FOR THE DYEING AND PRINTING OF CELLULOSECOTAINING MATERIALS, SUCH AS NATIVE AND REGENERATED CELLULOSE. THE NEW DYESTUFFS ARE ALSO SUITABLE FOR DYEING MATERIALS CONTAINING AMIDE GROUPS, SUCH AS WOOL, SILK AND SYNTHETIC POLYAMIDES. DYEINGS OBTAINED ON CELLULOSE-CONTAINING TEXTILE MATERIALS ARE DISTINGUISHED BY VERY GOOD FASTNESS PROPERTIES, ESPECIALLY FASTNESS TO LIGHT AND TO WET PROCESSING. ANTHRAQUINONE DYESTUFFS WHICH IN THE FORM OF THE FREE ACID CORRESPOND THE THE FORMULA
R1 DENOTES A HYDROGEN ATOM, A HYDROXYL GROUP, A HALOGEN ATOM OR A SULPHO GROUP, R2 DENOTES A HYDROGEN ATOM OR A SUBSTITUENT, R3 DENOTES A HYDROGEN ATOM OR A SULPHO GROUP, AND R4 DENOTES AN OPTIONALLY SUBSTITUTED ALKYL, ARALKYL OR ARYL GROUP,
摘要:
Compared to the parent compound, phthalimidomethyl derivatives of 2-(2-hydroxyphenyl)benzothiazole have much lower vapor pressure and greatly improved ultraviolet stability. Both of these factors make these derivatives much better organic phosphors than the parent compound since they have greatly improved the useful lifetime of compositions where they have been incorporated to impart fluorescent properties. These new derivatives fluoresce with a yellow color.
摘要:
A method of preparing heterocyclic derivatives selected from the formulae:
WHEREIN X is selected from hydrogen, lower alkyl, lower alkoxy, and halogen; Y is selected from hydroxy and X; Z is selected from nitrogen, oxygen, and sulfur by reacting an o- aminobenzenethiol, o-aminophenol, or o- aminoaniline and substituted derivatives thereof with an ortho-substituted benzoic acid or 2-substituted naphtholic acid in the presence of a catalyst comprising phosphorus trichloride. The compounds produced by the process of the present invention are useful as stabilizers in various organic media, e.g., organic plastics, oils, etc. and as intermediates in the production of dyestuffs and fluorescent compounds.
摘要:
IN THE PROCESS FOR PREPARING 2-BENZOTHIAZOLONES BY REACTING CARBONYL SULFIDE WITH AN AROMATIC NITRO COMPOUND IN WHICH AT LEAST ONE OF THE TWO ORTHO POISITIONS IS UNSUBSTITUTED, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF SODIUM HYDROSULFIDE, AND RECOVERING THE 2-BENZOTHIAZOLONES PRODUCED THEREBY.
摘要:
PREPARATION OF 3 - (2 - BENZOTHIAZOLYL)-2-BENZOTHIAZOLINEONE BY REACTING 2-CHLOROBENZOTHIAZOLE WITH AN ALKALI METAL SALT OF 2-HYDROXYBENZOTHIAZOLE.