60results about How to "Good dyeing reproducibility" patented technology

An object of the present invention is to provide a disperse dye composition that has the light fastness required of synthetic fiber materials for automotive interiors that are exposed to sunlight at high temperature and high humidity, and that has good blue, red, and yellow dyeability. This object is achieved by a mixed disperse dye composition containing a blue disperse dye composition having a specific composition ratio of five specific types of disperse dyes, and other specific yellow and / or red disperse dyes. The invention makes it possible to provide a disperse dye composition having not only high fastness of each color but light fastness with a favorable balance of the three primary colors, with the dye properties of each color equal during dyeing, and good dye color reproducibility, as well as by a dyeing method using this dye.

The invention discloses a compounding dispersing dye that is suitable for dye printing polyester material. The invention could make the bright yellow product that has high concentration, and reduce polluted water. It has good dyeing repeatability and good color fastness.

The invention relates to a low-salt and low-alkali dyeing process with a mesothermal type active dye of a cellulosic fiber fabric. The low-salt and low-alkali dyeing process comprises the following steps: modifying a cellulosic fiber fabric to be dyed by a fiber modifying agent to prepare a partially-aminated modified cellulosic fiber fabric to be dyed; modifying the mesothermal type active dye by a dye modifying agent to prepare an activated and modified mesothermal type active dye; and carrying out low-salt and low-alkali dyeing on the cellulosic fiber fabric, namely carrying out the low-salt and low-alkali dyeing on the partially-aminated modified cellulosic fiber fabric to be dyed by the activated and modified mesothermal type active dye in the presence of neutral electrolyte, inorganic alkalis and water. According to the dyeing technology, the use amount of the neutral electrolyte and the inorganic alkalis can be reduced and the dyeing temperature can be reduced by about 10 DEG C; the dyed cellulosic fiber fabric has high coloring depth, good dyeing fastness and excellent dyeing reproducibility; the low-salt and low-alkali dyeing process can be used for dyeing various cellulosic fiber fabrics by the mesothermal type active dye.

The invention provides a high-temperature dyeing process for chemical fiber filaments, including pretreatment, presetting, dyeing, reductive soaping, color fixing, softening treatment, drying, setting, calendering, and winding. The present invention adds anti-staining salt S in the dyeing process, and adding anti-staining salt S can greatly improve the degree of damage to the dye by the potential aldehyde groups in the cellulose molecules in the chemical fiber filaments, so that the dyed product has a pure color and light, avoiding The color difference of dyeing is eliminated, the reproducibility and stability of dyeing are better, and high-temperature leveling agent is added to avoid the decrease of fuel heat resistance stability caused by the increase of temperature, which will lead to dye aggregation and affect the effect of level dyeing and penetration. Problems of color spots and stains may even occur, so that the dyeing effect is good; the chemical fiber filaments finally produced by the present invention are evenly dyed, stable, reproducible, elastic, soft, and have a firm dyeing degree.