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Microcapsules with a stable pressure internal Mass structured by Polyurethane polyurea or polyurea and Method for its manufacture
Microcapsules with a stable pressure internal Mass structured by Polyurethane polyurea or polyurea and Method for its manufacture
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机译:由聚氨酯聚脲或聚脲构成的内部压力稳定的微胶囊及其制造方法
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摘要
What are disclosed are pressure-resistant microcapsules comprising a polyamide shell having therein a structural mass of a polyurethane-polyurea polymer and an encapsulated water-immiscible liquid phase, and methods for making the same by dispersing a water-immiscible liquid phase in an aqueous phase and subsequently or simultaneously admixing therewith an aqueous solution of a diamine or polyamine, said dispersed phase comprising a polyamide forming acid compound, diisocyanate or polyisocyanate or a prepolymer thereof, and an inert organic aprotic hydrophilizing agent.
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