Dyeprep 888 is a non-formaldehyde based pretreating agent for direct-pigment, and fiber reactive dyes. It significantly improves dye washfastness of dyed cellulosic fabrics and their blends.
Improves dye yield for direct and pigment dyed fabrics compared to acid applied pretreatments
Improves washfastness to home laundering
High tolerance for salts
Contains no formaldehyde
Can be applied by alkaline exhaust procedure with satisfactory results
The recommended usage level of Dyeprep 888 is approximately 0.5 - 6% OWG depending on depth of shade and dyestuffs.
Dyeprep 888 can be effective at room temperature but optimal results occur when bath temperature is slowly elevated to 140°F for 15 minutes (light to medium shades) or 20 minutes (dark shades).
A significant increase in dye yield will be seen when pretreatment baths are adjusted to pH 10.8-11.2 with 50% caustic.
