| 摘要 |
A surfactant system for use in manufacturing water-in-oil emulsions of water-soluble polymers made from ethylenically unsaturated monomers comprises, by weight, 25 to 85% of an oil-soluble alkanolamide, 5 to 35% of a polyoxyethylene derivative of a sorbitan ester, and 0 to 50% of sorbitan monooleate. |
