Ecofoot has developed a technology based on H2COLOR-AUX, an additive that complexes with reactive dyes, decreasing hydrolysis of the dye, with the objective of facilitating and improving the washing-off project, where most of the water and energy of processing cotton fibres is spent.
H2COLOR-AUX is applied in the dyeing of cellulosic fibres by exhaustion process.
Dyeing is not affected by H2COLOR-AUX. The conditions of application, such as temperature of dyeing, are the same. The rest of the conditions, salt and alkali concentrations, are not altered.
H2COLOR-AUX will work with any reactive dye, whether it is a high temperature dyes, 80ºC, or a low temperature dye, 50ºC.
After previous mixing with H2COLOR-AUX in the addition tank, reactive dye is complexed with H2COLOR-AUX, with less hydrolysed dye to be washed-off, saving 80% in energy and 70% in water of the total dyeing process.
It also saves on time, saving up to 45% in the total dyeing time, increasing productivity.
Ecofoot has also developed Hybrid Pigments, based on a dye chemically linked to a reactive particle, appropriate for Garment Dyeing of cotton garments at low temperatures (25ºC) and no salt.
Garment Dyeing of Denim is traditionally done with Indigo, a very polluting process. Ecofoot-Indigo is a specific H2COLOR-Pigment, that is applied in Denim and tops (fabric or knitwear) in an ecological process, that avoids reducing agents.Oher colours of H2COLOR-Pigments are applied in the same way as indigo.
H2COLOR-Pigments can also be applied to wool, in a more ecological process than than the standar wool dyeing. No heavy metals aare present and no ammonia is used.