Methods for the dispersion of water-soluble of hydrophilic substances in a supercritically pressurized fluid

摘要

A method for the dispersion of water-soluble or hydrophilic substances in a supercritically pressurized fluid by adding a surfactant said surfactant being a block copolymer comprising at least one CO₂-philic block and at least one nonionic hydrophilic block.