| 摘要 |
Stable aqueous emulsions of polyisocyanates are prepared by gradually adding the latter to an aqueous solution at 1-5% by weight of a polyoxyethylene glycol having an average molecular weight ranging from 350,000 to 600,000, under such conditions, with regard both to stirring and to polyisocyanate feeding rate, as to allow a practically immediate mixing of the polyisocyanate in the water. |
