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US4094842A Dispersing solid polyurethane prepolymers into water 失效
将固体聚氨酯预聚物分散在水中

Dispersing solid polyurethane prepolymers into water
摘要:
This invention relates to a novel process for the production of polyurethane via an intermediate stage of aqueous dispersions of oligomeric polyurethane prepolymers having ionic and/or non-ionic hydrophilic groups which ensure their dispersibility in water, followed by conversion of these water-dispersible oligomers into cross-linked high molecular weight sheets.
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