| 摘要 |
The present invention relates to compounds based on polyorganosiloxanes, obtained by reacting a) 62.5 to 99.245 wt. % of at least one polyorganosiloxane, b) 0.5 to 15 wt. % of at least one pyrogenic silicic acid, c) 0.005 to 7.5 wt. % of at least one (C4 to C30) carboxylic acid and d) 0.25 to 15 wt. % of at least one waterproofing agent, respectively in relation to the total quantity of the constituents a) to d), in the presence of at least one catalyst. Said invention also relates to methods for the production thereof, aqueous emulsions containing said compounds, solid compositions containing the same as well as the use thereof as an antifoaming preparation. |
