发明授权
US4874832A Microcapsules having polyurethane walls 失效
具有聚氨酯壁的微胶囊

Microcapsules having polyurethane walls
摘要:
Improved microcapsules have a capsule wall which contains a polyurethane which can be obtained by reacting an isocyanate with a polyether polyol which contains amino groups.
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