Progress in bleaching to top brightness with low reversion

摘要

High temperature and long retention time in a D stage produces improved brightness stability.Temperature increase is most effective in the D2 stage.These effects in the D stages are improved further by a final peroxide stage,which produces the best value for brightness stability.High temperature,charge and residual of hydrogen peroxide are beneficial.With DIP,high temperature in the Dl stage produces higher final brightness and lower post color numbers.