Ultrafiltration process for purification of dyes useful in foods
Unsymmetrical 1:2 chromium complex dyestuffs
Unsymmetrical 1:2 chromium complex of a monoazo dyestuff and a d
Use of amino azoic dyes as markers of oil distillation products
Use of disazo compounds
Use of lithium salts of anionic dyes to enhance their...
Use of thiazolyl-pyridinium based dyes in optical layers for...