Secret Cleaning Strategies From A Retired Detailer; Lipstick Ink And Shoe Polish Stain Removal

Pat. No. 3,989,452), adding alkaline lithium salts when metallizing non-metallized dyes (U.S. Though all these methods have their merits they however still endure from shortcomings reminiscent of undesirable solvent vapors throughout preparation and use of stated dye preparations, when organic solvents are used; stability and degradation issues when utilizing e.g. lithium salts; time and power consuming desalting strategies; or production of too large amounts of undesired effluents, which want in depth equipment to wash them.


In the process of the present invention the 1:2 metal complex dyes containing at most one sulfonic acid group may be current within the free acid from (--SO.sub.3 H) or preferably within the type of their akalimetal/alkaline earth steel, amine or ammonium salts, such as for instance the sodium, potassium or magnesium salts, further ammonium or alkanolamine (e.g. di- or triethanolamine) salts.


Numerous strategies for getting ready stable steel-complex dye options or dispersions have been proposed in the pa tent literature, comparable to for example utilizing natural solvents (U.S. These dye preparations may be additional subjected to a wet-grinding so as to raised homogenize them and to enhance their stabilities and utility properties.


Wet-grinding is carried out in frequent units (mills) well-known in the art. The pH might be adjusted by the (slow) addition of common natural or ideally inorganic acids, resembling sulfuric or ideally hydrochloric acid. The dye content of those stable liquid preparation may be within the range of about 10 to 35, preferably 15 to 25% by weight, calculated on the burden of the entire liquid preparation. Additional objects of the current invention relate to the liquid and solid dye preparations produced as well as their uses in dyeing processes for varied substrates.


These and other objects of the current invention will change into obvious from the next detailed description. Different substituents that may be present are unsubstituted or substituted carbamoyl or sulfamoyl, nitro, or halogen. The current invention pertains to a process for the preparation of stable, water-miscible, concentrated options of micro-dispersions of 1:2 metal complex azo or azomethine dyes and the obtained concentrated dye solutions/micro-dispersions that are helpful in the field of dyeing and printing fibrous supplies.