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    • 6. 发明申请
    • A PROCESS FOR MAKING POLYUREA PARTICLES
    • 制备聚氨酯颗粒的方法
    • WO2012095236A1
    • 2012-07-19
    • PCT/EP2011/072899
    • 2011-12-15
    • HUNTSMAN INTERNATIONAL LLCWOUTTERS, Steve AndreLINDSAY, Chris Ian
    • WOUTTERS, Steve AndreLINDSAY, Chris Ian
    • C08G18/08C08G18/28C08G18/32C07C273/18
    • C08G71/02C08G18/0852C08G18/2865C08G18/3228
    • According to the invention, a method for providing urea particles in a solvent medium is provided. The method comprises the steps of • providing at least one polyisocyanate component dissolved in a first solvent; • providing at least one isocyanate-reactive polyamine component dissolved in a second solvent; • providing at least one isocyanate-reactive monoamine, optionally dissolved in a third solvent; • reacting the polyisocyanate component, the polyamine component and the monoamine, by combining the polyisocyanate component dissolved in the first solvent, the polyamine component dissolved in the second solvent and the monoamine optionally dissolved in the third solvent, thereby providing urea particles dispersed in a solvent medium, the solvent medium comprising said first solvent, the second solvent and optionally the third solvent, whereby the monoamine is a monoamine soluble in the solvent medium.
    • 根据本发明,提供了一种在溶剂介质中提供尿素颗粒的方法。 该方法包括以下步骤:提供溶解在第一溶剂中的至少一种多异氰酸酯组分; °提供溶解在第二溶剂中的至少一种异氰酸酯反应性多胺组分; °提供至少一种异氰酸酯反应性单胺,任选地溶解在第三溶剂中; 通过将溶解在第一溶剂中的多异氰酸酯组分,溶解在第二溶剂中的多胺组分和任选溶解在第三溶剂中的单胺组合使多异氰酸酯组分,多胺组分和单胺反应,从而提供分散在溶剂中的尿素颗粒 介质,包含所述第一溶剂,第二溶剂和任选的第三溶剂的溶剂介质,由此单胺是可溶于溶剂介质中的单胺。