abstract |
The invention relates to 85 to 95% of EO / PO block copolymers containing at least 70% of EO, 5 to 15% of at least one polycarboxylate and 0.1 to 5% of at least one straight chain alkylbenzene sulfonate. A surfactant / polymer mixture is provided having a dissolution rate of 6.5 minutes or less. |