abstract |
Control of foaming in cosmetic or pharmaceutical emulsions comprises incorporating a block copolymer contg. glycol ether units and obtainable by reacting a polypropylene glycol (PPG) of mol. wt. 1000-8000 and/or a polyethylene glycol (PEG) of mol. wt. 200-20000, esp. up to 8000, with a diisocyanate and/or dicarboxylic acid contg. 2-44C. |