Ecofriendly processing of sulphur and vat dyes—An overview

101-107Various developments that have taken place in the ecofriendly dyeing of sulphur and vat dyes have been briefly discussed. A good degree of progress in this direction has been made by the successful use of products like hydrol in sulphur dyeing and zinc sulphoxylate formaldehyde in vat dyeing. However, the efforts to improve the dyeing technology of sulphur and vat dyes on cotton are still required