ORGANOPOLYSILICONE POLYETHER DRAINAGE AID

The present invention relates to a drainage aid composition and its use in pulp washing process. More particulary， this invention relates to drainage aid composition of silicone polyethers prepared via zinc cataiized dehydrogenative coupling of alcohol terminated polyethers with silicone oligomers and polymers comprising of at least one silicon bonded hydrogen. The compostion of this invention exhibit excellent drainage properties. The present invention relates to a drainage aid composition and its use in pulp washing process. More particulary， this invention relates to drainage aid composition of silicone polyethers prepared via zinc cataiized dehydrogenative coupling of alcohol terminated polyethers with silicone oligomers and polymers comprising of at least one silicon bonded hydrogen. The compostion of this invention exhibit excellent drainage properties.