Carrier for Polyester Dyeing
Textile dyeing carriers are aromatic or aliphatic organic compounds that swell and temporarily plasticize the compact amorphous regions of polyester fiber structure at atmospheric pressure (100°C), temporarily lowering the glass transition temperature (Tg) and allowing disperse dye molecules to diffuse into the fiber interior at lower temperatures than would otherwise be possible. Carriers enable atmospheric pressure dyeing of polyester in open baths where high-temperature (HT) pressure equipment is unavailable, or dyeing of polyester-cotton and polyester-wool blends where HT temperatures would damage the natural fiber component. After dyeing, thorough washing is required to remove carrier residues.
Key Applications
- Atmospheric pressure disperse dyeing of polyester without HT equipment
- Polyester-cotton and polyester-wool blend dyeing at 100°C
- Dyeing pressure-sensitive or heat-sensitive polyester constructions
- Mills requiring polyester dyeing capability with existing open dyeing machinery
Frequently Bought Together
Wetting Agent
Textile wetting agents are anionic or non-ionic surfactant compounds that dramatically reduce the surface tension of aqueous dyebaths and process liquors, enabling rapid and uniform penetration of process chemicals into the dense fiber structure of yarn packages, fabric rolls, and garment loads.
Textile Dyes & AuxiliariesSequestering Agent
Textile sequestering agents are chelating compounds — primarily phosphonate, EDTA, or polycarboxylate chemistry — that bind and inactivate calcium, magnesium, iron, and other heavy metal ions present in hard process water and in the textile substrate itself, preventing their interference with dye chemistry, bleaching performance, and auxiliaries stability.
Textile Dyes & AuxiliariesLeveling Agent
Textile leveling agents are amphiphilic surfactants or polymer compounds that control the rate of dye uptake from the dyebath onto fiber, retarding initial dye strike and promoting migration of pre-absorbed dye from heavily dyed areas to lighter areas, ultimately producing uniform, level dyeings across the entire substrate.