Abstract: For decreasing dyeing temperature, realizing energy-saving and environmental-friendly low temperature dyeing of polyester fibric, the dyeing performance and process of environmental friendly carrier OE were investigated. The results showed that carrier OE had plasticizing effect for polyester fiber and could effectively lower dyeing temperature of polyester fiber, when polyester fibrics were dyed at 98℃, the addition of carrier OE into dye bath can improve dyeing rate and dye uptake percentage obviously, carrier OE had good migrating property. When dye amount is 2% (o.m.f), the optimum carrier amount is 6% (o.m.f), dyeing temperture is 98℃, and holding time is 80min, carrier dyeing can obtaine consistent color fastness, similar colour feature with high temperature and pressure dyeing.

Key words: carrier, polyester fiber, dyeing process, low temperature dyeing