Decantation of lignin
Derivatives of colchicines and thiocolchicines
Derivatives of humic acid
Desulfonated lignin thermosetting resin based compositions
Dialysis of waste pulp liquor
Diphenylhydantoin immunogens
Diphenylhydantoin immunogens
Dispersants from spent sulfite liquor
Dissolution of chlorides of ketone
Distillable oil recovery from plant materials
Drilling fluid composition and process
Drilling fluids and additives therefor
Dry state desulphonation of lignin substances
Dye
Dye
Dye for lubricating oil
Dye pigment
Dyestuff production
Dyestuffs